Federal LMD9678R Industries 97.8'' Black Vertical Air User Manual

LMD E3670

E3670

REV J 7/1/24

FEDERAL INDUSTRIES

LMD4878, LMD7278, LMD9678

INSTALLATION & OPERATIONS MANUAL

KEEP THIS MANUAL FOR FUTURE REFERENCE

Engineering and technical data are subject to change without notice.

FEDERAL INDUSTRIES P.O. Box 290 Belleville, WI 53508

Toll Free 1(800) 356-4206 WI Phone (608) 424-3331 Fax: (608) 424-3234

LMD E3670

CONTENTS

INTRODUCTION ....................................................................................................................................................... 3

REGISTRATION AND SERIAL NUMBER ............................................................................................................ 3

WARNING LABELS & SAFETY INSTRUCTIONS .............................................................................................. 4

BASE COMPONENT LAYOUT .............................................................................................................................. 5

ELECTRICAL & REFRIGERATION DATA ........................................................................................................ 6

INSTALLATION....................................................................................................................................................7-19

INSPECTION FOR SHIPPING DAMAGE .............................................................................................. 7

LOCATING THE DISPLAY CASE ......................................................................................................... 7

REMOVING CASE FROM SHIPPING SKID ......................................................................................... 7

REMOVING PACKAGING MATERIAL ................................................................................................ 8

LIFTING AND MOVING CASE .............................................................................................................. 8

SINGLE CASE INSTALLATION ............................................................................................................ 9

LEVELING THE CASE ......................................................................................................................... 9

SEALING CASE TO FLOOR ................................................................................................................ 9

MULTIPLE CASE LINEUP INSTALLATION................................................................................. 10-12

TWO CASES SINGLE REMOTE CONDENSER ............................................................................... 11

FLOOR PREPERATION ..................................................................................................................... 12

JOINING AND LEVELING LINE UP ........................................................................................... 12-13

SEALING ALL UNITS TO FLOOR ................................................................................................... 13

ELECTRICAL CONNECTION ......................................................................................................... 14-15

PERMANENTT CONNECTED ........................................................................................................... 14

CORD CONNECTED (OPTIONAL) ................................................................................................... 15

PANELS REMOVAL FOR ELECTRICAL ACCESS ............................................................................ 16

CONDENSATE DRAIN HOSE (STANDARD) ..................................................................................... 17

CONDENSATE PUMP (OPTIONAL) ................................................................................................... 17

SHELVING INSTALLATION ................................................................................................................ 18

SHELF LIGHTS ...................................................................................................................................... 19

OPERATING INSTRUCTIONS ......................................................................................................................... 20-26

CONTROL DESCRIPTION ......................................................................................................................... 20

ELECTRONIC CONTROL OPERATION .............................................................................................. 21-24

Button and Display Overview .................................................................................................................. 22

Powering on Control ................................................................................................................................ 22

Adjusting the Set Point ............................................................................................................................ 23

Entering Manual Defrost Mode ............................................................................................................... 23

Error Codes ......................................................................................................................................... 23-24

Control Parameters .................................................................................................................................. 24

NIGHT CURTAIN OPERATION ................................................................................................................. 25

SECURITY COVER INSTALLATION (OPTIONAL) ................................................................................ 26

INITIAL START UP ................................................................................................................................................ 27

PLACING PRODUCT IN CASE .................................................................................................................. 27

MAINTENANCE....................................................................................................................................................... 28

TOP LIGHT BULB REPLACEMENT ................................................................................................... 28

CLEANING CONDENSER COIL .......................................................................................................... 28

DAILY CLEANING .................................................................................................................................................. 29

WEEKLY CLEANING ........................................................................................................................................ 30-31

MISTER OPTION ..................................................................................................................................................... 32

SERVICE INFORMATION ................................................................................................................................ 33-34

SPECIAL SERVICE SITUATIONS ....................................................................................................... 33

PRE-SERVICE CHECKLIST ................................................................................................................. 34

SALE & DISPOSAL ................................................................................................................................................. 35

REFRIGERATION OPERATION ..................................................................................................................... 36-37

ELECTRONIC EXPANSION VALVE OPERATION ........................................................................... 37

REPLACEMENT PARTS - ...................................................................................................................................... 38

WIRING DRAWING ........................................................................................................................................... 39-41

OPTIONAL TOP CONDENSING UNIT INSTRUCTION .............................................................................. 42-49

LMD E3670

INTRODUCTION

Thank you for purchasing a Federal Industries display case. This manual contains important

instructions for installing and servicing the LMD Models. A repair parts list and wiring diagrams

are also included in the manual. Read all of these documents carefully before installing or

servicing your case.

NOTICE

Read this manual before installing your case. Keep this manual and refer to it before doing any

service on the equipment. Failure to do so could result in personal injury or damage to the case.

NOTICE

Installation and service of the electrical components in the case must be performed by a licensed

electrician.

The portions of this manual covering components contain technical instructions are intended only

for persons qualified to perform electrical work.

DANGER

Improper or faulty hookup of electrical components in the case can result in severe injury or death.

All electrical wiring hookups must be done in accordance with all applicable local, regional, or

national standards.

REGISTRATION & SERIAL NUMBER

It’s important to keep a record of the model and serial number of your merchandiser for warranty

and part identification. Please write them here for your quick reference.

your product today.

Case Model__________________________ Serial Number______________________

We’re here to provide you with the best possible experience with your new product, however, we

cannot cover everything about your merchandiser in this manual, so if you have any additional

questions or issues, please see the SERVICE INFORMATION PAGE to find who you should

contact.

LMD E3670

WARNING LABELS & SAFETY

INSTRUCTIONS

This is the safety-alert symbol. When you see this symbol on your case or

in the manual, be alert to the potential for personal injury or damage to

your equipment.

Be sure you understand all safety messages and always follow recommended precautions and safe operating

procedures.

NOTICE TO EMPLOYERS

You must make sure that everyone who installs, uses, or services your case is thoroughly familiar with all

safety information and procedures.

Important safety information is presented in this section and throughout the manual. The

following signal words are used in the warning and safety messages:

DANGER: Severe injury or death will occur if you ignore the message.

WARNING: Severe injury or death can occur if you ignore the message.

CAUTION: Minor injury or damage to your case can occur if you ignore the message.

NOTICE: This is important installation, operation, or service information. If you ignore the message, you

may damage your case.

The warning and safety labels shown throughout this manual are placed on your Federal

Industries case at the factory. Follow all warning label instructions. If any warning or safety

labels become lost or damaged, call our customer service department at 1(800) 356-4206 for

replacements.

This label is located on removable electrical panels. This label is located below near moving parts

CAUTION

POWER BEFORE

RISK OF ELECTRIC

SHOCK DISCONNECT

91-12340

SERVICING UNIT.

C A U T IO N

H A Z A R D O U S M O V IN G PAR T S

D O N O T O P ER A T E U N IT W IT H

D ISP LA Y P A N S R E M OV E D .

LMD E3670

BASE COMPONRNT LAYOUT

72.0

48.0

4.5

18.8

REFRIGERATION

LINE EXIT HOLE

1.5"

CONDENSATE

DRAIN

CONDENSATE

DRAIN TRAP

CONDENSATE DRAIN HOSE

37.6

ELECTRONIC

EXPANSION VALVE

(EEV) (AFTER 1/20)

TXV (BEFORE (1/20)

REFRIGERATION

SOLENOID

SIGHT GLASS

REFRIGERATION

ACCESS VAVES

.83 END PANEL

WHEN USED

.83 END PANEL

WHEN USED

OPTIONAL CONDENSATE

PUMP LOCATION

5/8" COPPER LOW PRESS

3/8" COPPER HIGH PRESS

REMOTE CONNECTION

BASE FRAME SUPPORT

LMD72 ONLY

REFRIGERATION

LINE EXIT HOLE

1.5"

CONDENSATE

DRAIN

CONDENSATE DRAIN TRAP

CONDENSATE DRAIN HOSE

REFRIGERATION

SOLENOID

SIGHT GLASS

REFRIGERATION

ACCESS VAVES

OPTIONAL CONDENSATE

PUMP LOCATION

5/8" COPPER LOW PRESS

3/8" COPPER HIGH PRESS

REMOTE CONNECTION

BASE FRAME

SUPPORT

BASE FRAME

SUPPORT

BASE FRAME SUPPORT

96 .83.83

18.8

31.5

24.00

37.6

CONDENSATE

DRAIN

ELECTRONIC EXPANSION

VALVE CONTROL (EEV)

(AFTER 1/20)

31.5

ELECTRONIC EXPANSION

VALVE CONTROL (EEV)

(AFTER 1/20)

ELECTRONIC

EXPANSION VALVE

(EEV) (AFTER 1/20)

TXV (BEFORE (1/20)

LMD E3670

ELECTRICAL & REFRIGERATION DATA

MODELS LMD4878R LMD7278R LMD9678R

REFRIGERANT R449A

VOLTS 120 VOLTS

FREQUENCY 60 HERTZ

PHASE 1 PHASE

# OF WIRES 3 WIRES

EVAPORATOR FAN

MOTORS

(2) .25 AMPS EA

120 VOLTS

(3) @ .25 AMPS EA

120 VOLTS

(4) @ .25 AMPS EA

120 VOLTS

LIGHT POWER

SUPPLY

(2) .5 AMPS EA

120 VOLT

(2) .5 AMPS EA

120 VOLT

(4) .5 AMPS EA

120 VOLT

LIGHT BALLAST

(1) 1.0 AMPS

120 VOLT

(1) 1.0 AMPS

120 VOLT

(1) 1.0 AMP EA

120 VOLT

SOLENOID VALVE

(1).35 AMPS

120 VOLTS

OPTIONAL

CONENSATE PUMP

(1)1.5 AMPS

120 VOLTS

Refer to the rating plate data attached to side of base for Maximum Fuse Size and

Minimum Circuit Ampacity.

LMD E3670

INSTALLATION

Inspection For Shipping Damage

You are responsible for filing all freight claims with the delivering truck line. Inspect all

cartons and crates for damage as soon as they arrive. If damage is noted to shipping

crates, cartons, or if a shortage is found, note this on the bill of lading (all copies) prior to

signing.

If damage is discovered when the case is uncrated, immediately call the delivering truck

line and follow-up the call with a written report indicating concealed damage to your

shipment. Ask for an immediate inspection of your concealed damaged item. Crating

material must be retained to show the inspector from the truck line.

Locating The Display Case

The case(s) should be located where it is not subjected to the direct rays of the sun, heating ducts,

grills, radiator, or ceiling fans, nor should it be located near open doors or main door entrances.

Also, avoid locations where there is excessive air movement or air disturbances and avoid high

humidity locations such as near cases with water misting or fogging devices. Failure to locate

this case as stated will reduce the performance of your display and will affect temperature of

interior of case and product.

If this case or cases are to be located against a wall there should be at least 6” between the case

and the wall to allow air circulation. Failure to give adequate space may cause exterior surfaces

to sweat.

Removing Case From Shipping Skid

Remove the (8) 1/4” screws that secure the case to the skid. These screws are located in

the front and rear Base Rails. The (4) screws in the rear base rail are easily accessible

from the back of the case. To access the (4) screws in the front base rail the Front Kick

panel will need to be removed.

FRONT BASE RAIL

KICK PANEL

10-18 KICK

PANEL SCREWS

SKID MOUNTING SCREWS

(4) 1/4" SCREWS THROUGH FRONT BASE RAIL

(4) 1/4" SCREWS THROUGH REAR BASE RAIL

REAR

BASE RAIL

Note that the

case has casters installed at factory to allow case to be moved to final location. There are

leg levelers on bottom of case, once case is off skid turn the leg levelers up to allow case

to roll on casters.

LMD E3670

Removing Packaging Material

Remove bubble wrap and packing material for all shelves and panel, brackets, etc. If it is

necessary to remove tape residue from plastic materials, use cleaning compounds

recommended in the cleaning section of this manual.

Lifting and Moving Case.

IF MANUAL LIFTING,PUSHING

OR PULLIN REQUIRED.

GRAB UNDER FRONT AND REAR

LIP ON FRONT AND BACK OF CASE.

IF MANUAL LIFTING,PUSHING

OR PULLIN REQUIRED.

GRAB UNDER FRONT AND REAR

LIP ON FRONT AND BACK OF CASE.

ON FRONT OF CASE IT MAY BE EASIER

TO REMOVE FRONT KICK PLATE.

REAR FORK

LIFT AREA

REAR FORK

LIFT AREA

14.4

2.6

OPTIONAL

CONDO

PUMP.

CONDENSATE

DRAIN

OPTIONAL CONDO

PUMP.

ADDITIONAL CONDENSATE

DRAIN ON 96" UNIT ONLY

4.5 4' & 6'

16.5 9'

CONDENSATE

DRAIN, ALL

IF MANUAL LIFTING,PUSHING

OR PULLIN REQUIRED.

GRAB UNDER FRONT AND REAR

LIP ON FRONT AND BACK OF CASE.

23.5

18.8

IMPORTANT: NEVER PUSH OR PULL ON END GLASS.

DOING SO WILL BREAK GLASS OR STRIP END PANEL

SCREWS AND TEAR END PANEL FROM CASE.

IMPORTANT: NEVER PULL ON END PANEL.

DOING SO WILL STRIP END PANEL SCREWS AND

TEAR END PANEL FROM CASE.

12.4

-Care must be taken when lifting and moving cases from skid as well as moving case into position.

-The case should be lifted off skid using a fork lift. The case must be lifted from rear in location noted in

picture above. Be sure case is balanced equally on forks. When sliding forks under case someone must

be watching that forks do not hit and damage refrigeration lines, drain or optional. condensate pump.

-To prevent injury, it is not recommended to attempt lifting case manually. When lifting, pulling or

pushing is required grab under front and back lip of case.

-Case is supplied with casters and once case is off of skid and on floor it should move easily into

position. Light pushing on lower part of end near the base is fine. NEVER PUSH OR PULL ON

GLASS. DOING SO CAN BREAK GLASS. NEVER PULL ON END PANEL OR GLASS. Doing so

will strip end panel screws and tear end from case.

CAUTION: Do not push or pull against the clear acrylic deflector on front of

case. Doing so can cause the acrylic to break. Do not push or pull on side

glass or pull on base panel. Doing so will break glass or pull out panel

mounting screws. Care must be taken not to damage or tip the case when

removing it from the skid or moving the case.

LMD E3670

Single Case Installation

Leveling the Case

It is important that the cases are level. This will allow for proper drainage of condensate water

from evaporator coil. Once the case is rolled to final location the case must be level for proper

drainage of defrost water to the condensate pump. A wrench is included to aid in adjusting leg

levelers

Check the level of the case along front of acrylic air deflector.

Adjust the (4) outside leg levelers as needed to level the case in each direction.

The LMD72 &LMD96 have (2) center leg levelers adjust these so that the center of base floor is

flat.

NOTE: If necessary use a wood or plastic shim under each leg leveler to avoid scratching the

tile floor.

Sealing Unit to The Floor

After the unit is positioned and the leg levelers are turned out, the unit needs to be sealed to the

floor for NSF approved installation.

LMD E3670

Multiple Case Lineup Installation

RIGHT CASE

CENTER CASE

LEFT CASE

KICK PLATE

AIR DIFFUSER

CHALK

LINES

BOLT,1/4-20

WASHER,1/4

JOINING RAIL TOP

WASHER,1/4-20

NUT,1/4-20

NUT,1/4-20WASHER,1/4

WASHER,1/4

BOLT,1/4-20

LEG

LEVELERS

SCREW,10-32

ACORN

NUT,10-32

END GASKETS

BASE RAIL

TOP SUPPORT

TOP JOINING RAIL

AIR DEFLECTOR

NUT,1/4-20

WASHER,1/4

SCREW,14/20

JOIN RAIL REAR

ALTERNATE REAR

ATTACHMENT POINT

LMD E3670

Two Cases Connected to Single Remote Condenser

If (2) cases are ordered from factory to run on a single condensing unit, there is only one

control that will operate both units.

The cases are prewired to connect both refrigeration solenoids together. These Wires are

hanging out from joining side of each case near the top front behind canopy.

Once all prep work is complete and both cases are ready to be joined, connect the wires from

each case together. Connect the yellow wire from case 1 to yellow wire to from case 2 and

connect the white wire from case 1 to white wire from case 2.

Once connected join cases as described below. Be careful not to pinch the wires between

cases.

DANGER

HIGH VOLTAGE.

Turn power off

before servicing.

May have more than

one disconnect

switch.

"IMPORTANT"

BEFORE INSTALLING CASES TOGETHER

CONNECT YELLOW WIRE FROM CASE 1

TO YELLOW WIRE FROM CASE 2.

CONNECT WHITE WIRE FROM CASE 1

TO WHITE WIRE FROM CASE 2.

WHEN PLACING CASES TOGETHER DO

NOT PINCH WIRES BETWEEN CASES.

CAUTION: The refrigeration solenoid on the case that does not have a control is

owered from the case that does have the control. When servicing

cases disconnect power from both cases to prevent electrical shock.

LMD E3670

Floor Preparation

Be sure the floor where the case line up will be located is strong enough to support cases

without sagging.

It is important that the cases are level. This will allow for proper drainage of condensate

water from evaporator coil and allow for proper alignment of cases.

Most floors are not level and the high and low spots in location of cases must be determined.

Place a chalk line in the desired position of where the back of the cases will be located. If the

back of the cases are to be along a wall there should be at least 6” clearance between wall

and the back of the cases.

Measure 33.25” from this chalk line to where the front of cases will be. This line is where the

front base rail meets the floor not the actual front of the case.

Mark the location along these lines that the outside edges of case will be. The cases without

end panels will be 48”,72”, or 96” depending on cases ordered. Add additional 1” to case end

that has an end panel.

Use a transit or line level to determine the highest point along chalk line.

Joining and Leveling Line Up

If case line up is along a wall it will make it difficult to gain access to back of case once line

up is complete. If it all possible make all connections accessible from front under side of

cases, but if necessary make any required connections at back of case as you install the cases.

-There are factory installed gaskets located on each end of all adjoining cases. Inspect all

gaskets to be sure they are properly located and not damaged.

-Remove the front kick plates from all cases as described Panel Removal section of this

manual.

-Remove all Top Air Diffuser from all cases from upper air duct track. Loosen thumb screws

on Retainers located behind air diffuser. Retainer will drop down allowing diffuser to be

pulled out of case.

RETAINER

THUMB SCREW

AIR DIFFUSER

RETAINER

THUMB SCREW

AIR DIFFUSER

-The required fasteners to join cases are installed at the factory in the location they will be

used. These fasteners are on the left side of each case. As each case is installed remove these

fasteners from the case and reuse them.

-Determining highest point as described in Floor Preparation above. Install the case that will

be located over the highest point first. Once the first case is rolled to final location the case

must be level for proper drainage of defrost water to the condensate pump. A wrench is

LMD E3670

included to aid in adjusting leg levelers Check the level of the case along the ledge in front of

acrylic air deflector. Adjust the (4) outside leg levelers as needed to level the case in each

direction. The LMD72 &LMD96 have (2) center leg levelers adjust these so that the center of

base floor is flat. If necessary use a wood or plastic shim under each leg leveler to avoid

scratching the tile floor

-Place the next adjoining case into line up. Level case until case end profiles are aligned and

touching. Install fasteners in the order below as designated with corresponding letter in

detailed diagram. As cases are joined additional leg leveler adjustments may be necessary.

A) Align the front of the base rail and fasten through hole in base rail using ¼-20 bolt and ¼-20

nut, use a ¼ washer against each base support as shown in diagram.

B) Align the top front of case and fasten through hole in top support using ¼-20 bolt and ¼-20

nut, use a ¼ washer against each top support as shown in diagram. If necessary the top

valance can be adjusted to provide better alignment. Loosen the fasteners along the top of the

valance located on top of case and adjust as needed. If a perfect alignment cannot be

achieved Valance Joining strap can be used only if needed. Place strap over seam and attach

with self-drilling screws provided.

VALANCE JOINING

STRAP

SELF-DRILLING

SCREWS

SELF-DRILLING

SCREWS

C) Align the holes in the air deflector supports and join with 10-32 screw and 10/32 acorn nut.

D) Align slots in top joining rail and join using ¼-20 bolt and ¼-20 nut, use a ¼ washer against

each top joining rail as shown in diagram.

E) Align slots in rear joining rail and join using ¼-20 bolt and ¼-20 nut, use a ¼ washer against

each rear joining rail as shown in diagram. Alternate rear attachment point shown in diagram

is used if it is not possible to get to back of case. Using this attachment point requires

removing all shelving and slotted back panel from both cases to gain access. See appropriate

section of this manual for shelf and slotted back panel removal.

Repeat for all additional cases in line up. Once all cases are attached continue with electrical,

refrigeration and drain connections as described in appropriate section of this manual.

Reinstall Kick Panels and air diffusers as described in appropriate section of this manual.

Sealing all Unit to The Floor

After the unit is positioned and the leg levelers are turned out, the unit needs to be sealed to the

floor for NSF approved installation.

LMD E3670

Electrical Connection

DANGER: Improper or faulty hookup of electrical components in the

display case can result in severe injury or death.

Permanent Connected (Standard)

-Only a licensed electrician must perform all case electrical connections.

-All electrical wiring hookups must be done in accordance with all applicable local, regional, or

national electrical standards.

-A separate circuit for each display case is required to prevent other appliances on the same

circuit from overloading the circuit and causing malfunction.

-The electrical service must be grounded upon installation.

-See the electrical data plate located on the inside back wall of display case, for proper circuit

size and wire ampacity.

Standard Bottom Base Electrical Connection: Use this electrical connection when

power source is from floor or wall outlet. The electrical connection box is on the bottom left side

of case behind the bottom Front Kick Panel. The box is accessible by removing the Front Kick

Panel. (See “Panel Removal Section” of this manual for panel removal instructions). Remove

electrical box cover to access electrical connection.

FRONT KICK PANEL

FRONT KICK PANEL SCREW

PERMANENT

CONNECTION

ELECTRICAL

BOX COVER

PERMANENT

CONNECTION

ELECTRICAL BOX

WIRE CONNECTION

Top Electrical Connection (OPTION): Use this optional factory installed electrical

connection when power source is from the ceiling. If equipped with this option the connection

box is located on the top back left corner of case. Remove electrical box cover to access

electrical connection.

PERMANENT

CONNECTION

OPTIONAL

TOP ELECTRICAL

BOX COVER

PERMANENT

CONNECTION

OPTIONAL TOP

ELECTRICAL BOX

WIRE CONNECTION

LMD E3670

Cord Connected (OPTION)

-A factory installed optional power cord is properly sized to the amperage requirements of the

case. See the electrical data plate located on the rear exterior of the case for the proper circuit

size for each case.

- The cord is can be factory installed from either the bottom base electrical box or the optional

top electrical box. A separate circuit for each display case is required to prevent other appliances

on the same circuit from overloading the circuit and causing malfunction.

CAUTION Risk of Electric Shock. If the cord or plug becomes damaged,

replace only with a cord and plug of the same type".

KICK PANEL

KICK PANEL SCREW

OPTIONAL POWER CORD

ELECTRICAL

CONNECTION

COX

LMD E3670

Panel Removal for Electrical Access

POWER SUPPLY

& BALLAST LOCATION

TOP VALANCE

10-32 TOP VALNCE SCREWS

8-32 TOP VALNCE &

NIGHT CURTAIN

HOUSING SCREWS

NIGHT CURTAIN

HOUSING

OPTIONAL TOP

ELECTRICAL

CONNECTION

KICK PANEL

10-18 KICK

PANEL SCREWS

8-32 NIGHT CURTAIN

HOUSING SCREWS

Kick Panels

The kick panel located at the front base of unit can be removed to access electrical connection,

condensate drain trap and hose, leg levelers and casters.

1. Loosen the 3 to 5 10-18 Kick Panel screws located under the front lip of Kick Panel.

2. Tilt the top of the Kick Panel away from the base. The bottom of Kick panel is

setting on top of a frame rail and once screws are removed the Kick Panel will drop

down and out of case

3. Set the Kick Panel and screws in safe place to prevent damage.

4. Reinstall Kick Panel in the reverse order.

Front Valance & Night Curtain Housing Removal

The Front Valance can be removed to access all lighting ballasts, power supplies and controls. If

additional access is required, the Night Curtain Housing can also be removed. The Night Curtain

Housing is located directly behind the top front valance. The night curtains are housed inside

1. Remove the front (3) to (5) 8-32 screws holding the Night Curtain to the Front

Valance.

2. From top of case remove the (3) to (5) 8-32 screws holding the Front Valance to top

of case.

3. Carefully remove Front Valance from unit and set Front Valance and screws in safe

place to prevent damage.

4. If additional access is required remove the Night Curtain Housing.

Hold up on Night Curtain Housing and Remove the back (3) to (5) 8-32 Night

Curtain Housing screws.

5. Set the Night Curtain Housing and screws in safe place to prevent damage.

6. Reinstall Front Valance and Night Curtain Housing in the reverse order.

DANGER: Electric shock hazard. Do not operate unit with panels removed.

LMD E3670

Condensate Drain Hose (Standard)

The case is furnished with a drain trap & 25’ of drain hose. The drain hose must be run to a near

buy floor drain. If draining up a slope or into a drain that is not on floor an optional pump must

be used.

The drain hose is rolled up under the case for shipment. It can be accessed from the back of case

and run to nearby floor drain. The drain trap and drain hose can also be accessed from front of

case by removing the front Kick Panel. (See panel removal section of this manual)

Be sure not to kink or pinch hose when running drain line to floor drain.

Condensate Pump (Optional)

Note: There is a piece of cardboard that has to be removed from the side of the pump to

free up the float. If this is not done, the pump will not turn on and the pan will overflow.

The case is available with an optional condensate pump. The pump is located under the case and

wired to the display case electrical. It is also furnished with a drain trap & 25’ of drain hose. The

drain hose must be run to a drain. The pump can be accessed by removing the Kick Panel as

described in the Panel Removal section of this manual.

The drain hose is rolled up under the case for shipment. It can be accessed from the back of case

and run to nearby floor drain. The drain trap and drain hose can also be accessed from front of

case by removing the front Kick Panel. (See panel removal section of this manual)

Be sure not to kink or pinch hose when running drain line to floor drain.

NOTICE: This unit could be shipped with an optional condensate pump. The pump has a

float that turns the pump on automatically when needed.

The pump is mounted in the base compartment. The pump should be cleaned and

inspected every 3-4 months.

LMD E3670

Shelving Installation

The LMD has 5 tiers of solid metal shelves. LMD48 Models have a total of 5 shelves and the

LMD72 and LMD96 shelves are split in the middle with a total of 10 shelves. Standard

Shelves for each case are the same so any shelf will fit in any tier location. Some cases may

be provided with optional staggered shelves meaning each shelf is a different depth. If case

has optional staggered shelves the deepest shelf goes on the bottom and shallowest goes on

the top.

Cases are shipped with shelves installed in the flat straight position and with the top of the

bottom shelf 10.5” from top of the deck. The remaining shelves would be spaced 9.7” apart.

This is a good starting shelf location and then shelve can be adjusted to suit product needs.

Follow the instruction in the illustration below. Start with the bottom shelf and determine

desired shelf location. The shelves are adjustable in 1 5/8” increments and can be set in either

a flat straight position or in a 10deg tilt position.

TILT SHELF AND SLIDE TOP SHELF TABS INTO

SLOTS IN SHELF STANDARDS. WITH TOP SHELF

TABS BEHIND SHELF STANDARD SLOT LOWER

SHELF TO ALLOW BOTTOM SHELF TAB SLIDES

INTO SLOTS IN SHELF STANDARDS. ADJUST

SHELF TO DESIRED POSITION EITHER FLAT

STRAIGHT OR 10

TILT POSITION. AS SHOWN.

TOP SHELF TABS

SLOTS IN SHELF

STANDARDS

SHELF

SHELF SHOWN IN FLAT STRAIGHT POSITION

SHELF SHOWN IN 10

TILT POSITION

LMD E3670

Shelf Lights

1. The shelf lights are attached with magnets to the front underside of each shelf. Place LED

Light Strip under shelf as shown and center it on shelf. The LED Light Strip plug end

must be to the left side of the case.

2. Attach the Shelf Light Cord to the end of the LED light Strip as shown.

LED LIGHT STRIP

WITH MAGNETS

SHELF

SHELF LIGHT CORD

SURFACE ON

SHELF THAT LED LIGHT

STRIP ATTACHES TO

LED LIGHT STRIP

PLUG LOCATION

3. Remove the cap from the appropriate female light sockets.

If the socket is not being used for a shelf light, the cap must be plugged into socket to prevent

contamination and moisture out of the socket.

4. Plug in each shelf light by aligning the male pins on the appropriate shelf light cord plugs

with the female light sockets and push together. IMPORTANT: Do not roll plug during

insertion.

5. Hook extra cord in notch on end of shelf support and notch on back flange of shelf to keep it

out of the way as shown.

LMD E3670

OPERATING INSTRUCTIONS

Control Description

Light Switch

The unit has a light switch that turns on and off the interior lights of unit.

Electronic Temperature Control

Located in the rear grille of the display case, the temperature control allows the user to adjust the

temperature of the display merchandiser to their needs.

LMD E3670

Electronic Temperature Control Operation

This unit is equipped with an electronic temperature control. The control parameters are set at the

factory and cannot be manually changed in the field. The preset control parameters are listed on

the chart in the Settings Chart below.

Operation

The control uses two sensors, one located in the air stream and one located on the

evaporator coil. The sensor located in the air stream is referred to as the temperature

control sensor. The sensor located on the evaporator coil is referred to as the defrost

probe. The temperature control sensor is located on the plastic tub behind the evaporator

coil to the left in the cold air stream. The sensor location is critical for proper operation

on the unit. Do not move or relocate this sensor.

The coil sensor is strapped to the evaporator coil. This sensor location is critical for

proper operation of the unit. Do not move or relocate this sensor. The temperature control

is set to cut in at 39°F (3.9°C). The Temp control cuts out at 26°F (-3.3°C) at the coldest

setting “9” and 36°F (2.2°C) at the warmest setting “1”.

Defrost Cycle

The control is programmed to initiate defrost via two different methods. There are 3

programmed defrost cycles in the case which will initiate a defrost cycle every 8 hours.

The unit does not have a time clock so the defrost cycles cannot be set for any specific

time of day.

The unit also has an ‘On demand’ defrost feature that will initiate a defrost when the

temperature differential between the evaporator temperature and the air temperature is

more than 20°F (11.1°C) for 5 minutes after 30 minutes into the refrigeration cycle (e.g.

if the air stream probe measures 42°F/5.6°C or greater and the defrost probe measures

20°F/-6.7°C or lower for five minutes). Once initiated the defrost cycle will terminate

when evaporator coil sensor reaches 43°F (6.1°C).

If a manual defrost is required, one can be initiated by pressing and holding the down

arrow for three (3) seconds. This is typically unnecessary and should only be performed

if special circumstances require it.

LMD E3670

DIGITAL DISPLAY

SET POINT ADJUST MODE

POWER TO CONTROL ON/OFF

AND SET POINT UP ADJUST

MANUAL DEFROST AND

SET POINT DOWN ADJUST

COMPRESSOR RUN

INDICATOR

DEFROST MODE INDICATOR

ALARM INDICATOR

Button Overview

Press and hold this button for 3 seconds to turn system on (if off) or off (if

on).

Also used to adjust set point when in set point adjust mode

Press to enter set point adjust mode, confirm set point changes, and mute

alarms.

Press and hold this button for 3 seconds to initiate a manual defrost (and

cancel defrost if initiated), also adjusts set point down when in set point

adjust mode

Powering on control

To turn refrigeration control power on, press and hold for approx. five seconds. The

display will read “On” while the button is depressed. When the control powers on, the display

will read the control set point of 1 thru 9. The compressor run indicator will illuminate on

the display, meaning that the compressor is running. (Note: the control may already be in the

on mode when shipped from factory).

To turn refrigeration control power to off, press and hold for approx. five seconds. The

display will read “Off” while the button is depressed. When the control powers off the display

will flash back and forth between the control set point and “Off”. The compressor run

indicator will be off on the display. When refrigeration control is in the off- mode cabinet

lights and evaporator fans will still operate, but the compressor will not turn on causing the

case to gradually reach room temperature.

LMD E3670

Adjusting the set point

The setpoint is what determines how cold the display case will hold food and beverage. To

adjust the setpoint press and hold the button approx. 5 seconds until the display begins to

flash the set point number. Then press the use the button to scroll number up (colder) or

press the button to scroll number lower (warmer). There are nine (9) available setpoints

numbers, the higher the number of the setpoint, the colder the display case will run, with

setting “9” being the coldest and setting “1” being the warmest. Once you have chosen your

desired setting press the button again to confirm your choice.

Entering manual defrost mode

To initiate a manual, defrost press and hold the button approx. 5 seconds. The control will

read “dEF” while the button is being held. The defrost is initiated when the defrost mode

indicator illuminates on the display. The control display will then return to reading the set

point. When the defrost mode indicator turns off the defrost is complete and the compressor

will turn back on illuminating the compressor run indicator .

Error codes

It is possible for error codes to be displayed on the control screen. In the event of a malfunction

an alarm will sound and the alarm indicator will be displayed on the display. An error code

or codes will flash intermittently on the display. If there are multiple codes, the display will

continuously cycle through them. The following photo shows error code “E0” as an example.

Mute: You may mute the alarm by pressing and releasing the wrench button. The red ringing

bell and all error codes will still be displayed. When the fault is remedied the control will

return to normal operation and will automatically clear the codes from the display.

Error codes may be encountered if either the controller or the display case is malfunctioning.

The following is a list of error codes that may be encountered.

LMD E3670

Error Codes and Resolutions

Code Description Cause Resolution

E0 Temperature probe

error

Probe signal is interrupted

or short

circuited

1. Check to ensure probe wires and quick

disconnect are secure in control.

2. Check probe resistance to table below. If 0

resistance is present check wiring insulation. If

infinite resistance is present check for breaks in

wiring (meter will likely read overload or very

high in the mega-ohm range).

3. Ensure that probes are wired per the wiring

diagram provided.

4. Replace probe if other remedies fail, or if probe

resistance deviates from “Error! Reference

source not found.” Error! Reference source

not found.

E1 Defrost probe error See E0

EE Unit parameter reading

error

Operating conditions 1. Remedy abnormal operating conditions. The

control is rated to operate in a range of 14 to

122°F (-10 to 50°C) and less than 90%RH non-

condensing.

Replace control if problem persists.

Operating parameter

reading error

See EE

Temperature Probe Common Resistance Chart

Probe Temp

Maximum Resistance

[Ω]

Normal Resistance

[Ω]

Minimum Resistance

[Ω]

32°F (0°C)

27.83

27.28

26.74

77°F (25°C)

10.1

9.9

212°F (100°C) 1 0.97 0.94

CONTROL PARAMETERS LMD

Parameter Description

Control Setpoint 

1 2 3 4 5 6 7 8 9

Compressor Cut out [°F]

34.0

32.7

31.5

30.2

29.0

27.7

26.5

25.2

24.0

Compressor Cut in [°F]

39.0°

Compressor Min On Time

5 min

Compressor Min Off Time

2 min

Compressor Max Run Time

60 min

Defrost Termination Temp [°F]

45.0

Time to first defrost

6 hr.

Time to subsequent defrost

6 hr.

Maximum Defrost duration

30 min

Defrost on demand differential [°F]

25.0

Delay for defrost on demand

5 min

Time delay to the next defrost on demand

30 min

LMD E3670

Night Curtain Operation

Night curtains are standard on all LMD models. They are provided to conserve energy when

case is not being used.

NOTE: When using optional Security Cover the Night Curtain(s) must be closed.

NIGHT CURTAIN STRAP

NIGHT CURTAIN

NIGHT CURTAIN SNAP

OPENING:

1. Grab night curtain strap located behind the top valance. Pull the night curtain

down the front of case opening.

2. Attach the snap located under the night curtain strap on to the snap located on the

front trim.

CLOSING:

1. Grab the night curtain strap and detach the snap from the snap located on the

front trim.

2. While holding the night curtain strap allow the night curtain to roll up.

Note: The LMD72 AND LMD96 models have (2) night curtains.

LMD E3670

Security Cover Operation (Optional)

Security Covers are optional on all LMD models. They are provided to cover product and

allow case to run while unattended.

NOTE: When using optional Security Cover the Night Curtain(s) must be closed.

SECURITY COVER

LATCH

SECURITY

COVER

SECURITY COVER

HANDLES

NIGHTCURTAIN

LOCATION

NIGHT CURTAIN

SNAP

SECURITY COVER

HOOKS

SECURITY COVER

CATCH SLOT

SECURITY COVER

LATCH CATCH

REMOVING

1. Use key provided to unlock Latch.

2. Turn Security Cover Latch vertical to unhook it from Security Cover Latch

Catch.

3. Grab Security Cover Handles and lift Security Cover up so the Security Cover

Hooks lift out of the Security Cover Catch Slots.

INSTALLING:

1. Close Night Curtain(s) as described in previous section. IMPORTANT: Night

Curtain must be closed or condensation will form on front of Security Cover.

2. Grab Security Cover Handles and lift it up so the Security Cover Hooks slide

down into the Security Cover Catch Slots located on top of case canopy.

3. Push in on bottom of Security Cover and turn Security Cover Latch Horizontal to

hook behind Security Cover Latch Catch.

4. Use key provided to lock Latch in horizontal position.

Note: The LMD72 AND LMD96 models have (2) security covers.

LMD E3670

Initial Start-Up

After all the checks outlined in the installation section of this manual have been made, the

case is ready to be put into service. Turn on the Power at the breaker box and flip the

Power Switch and Light Switch on unit to the on position.

At start up from a warm unit, it is recommended that the temperature control is set at a

warm setting, such as 1 on the dial. After the unit has gone through several cycles, turn

the control to a mid-range setting, then to a colder setting if necessary to maintain desired

product temperature

NOTICE: This refrigerated display case is designed to operate

in a maximum environment of 75 DEG. F and 55% relative

humidity. Exceeding these limits will cause poor case

performance and excessive sweating.

Placing Product into Case

- Do not exceed 100 pounds of weight per shelf. Heavy product should be distributed

evenly across the entire shelving area.

- Determine desired shelving location before placing product in case. Product must be

removed to readjust shelf location.

- Allow a minimum of 2” between top of product and bottom of shelf.

- Do not overhang the front or rear of shelves with product. Improper clearance in front

and rear of shelf will block the refrigerated airflow and will cause product loss.

-Do not block the slots along the front and rear air discharge slots. Covering these slots

will block the refrigerated airflow and could cause product loss.

-The display deck is removable for cleaning and can become dislodged in shipment. To

ensure proper airflow and performance of the case, make sure that the display deck is

pushed completely down.

-Allow refrigerated models to run for at least two hours before placing pre-chilled

product into unit.

NOTICE: CASE MUST BE STOCKED WITH PRE-CHILLED PRODUCT

38° OR COLDER.

NOTICE: This refrigerated display case is designed to operate

in a maximum environment of 75 DEG. F and 55% relative

humidity. Exceeding these limits will cause poor case

performance and sweating of glass panels.

LMD E3670

MAINTENANCE

Top Light Bulb Replacement

LIGHT DIFFUSER PANEL

LIGHTS

There are (2) top lights on the LMD4878 & LMD7278 and there are (4) on the LMD9678.

To access these lights, the top light diffuser must be removed.

1. Remove the top shelf or shelves from the case.

2. Push up on the back of the Light Diffuser Panel and slide it back over

The lip on the rear retainer until the front drops down of the front retainer.

3. Once light diffuser is removed the lights can be removed.

-Florescent T8 bulbs: T8 bulbs can be removed by pushing the bulb towards

the spring-loaded receptacle until it can be removed from the stationary receptacle

and replace in reverse order.

-LED Strip Light: Led can be removed by unplugging cord from end of led and

then unsnapping lights from the light clip. Replace LED light in reverse order

4. Reinstall light diffuser.

Cleaning Condenser Coil

NOTICE: Condenser coil must be cleaned a minimum of twice per month

to insure proper refrigeration performance and prevent

compressor failure. In some environments, it may be necessary

to clean more frequently. FAILURE TO CLEAN

CONDENSER COIL WILL VOID COMPRESSOR

WARRANTY.

The condenser coil is remotely mounted in another location, but it is very important that

the Condenser coil is cleaned twice per month to insure proper refrigeration performance

and to prevent compressor failure. Failure to clean condenser coil will void condenser

warranty.

1. Find the remote mounted Condensing unit

2. Disconnect power to the unit.

3. Carefully vacuum the front surface of condenser coil. Take care not to bend coil fins with

vacuum cleaner nozzle.

LMD E3670

CLEANING INSTRUCTIONS

Daily Cleaning

The case should be cleaned thoroughly, as described in the weekly cleaning section,

before it is used for the first time.

NOTICE: Avoid splashing or soaking any electrical components with

water to prevent electrical damage to the case.

NOTICE: Shut off lights, disconnect power and remove all products from

case. Allow sufficient time for the unit to reach room

temperature before proceeding with cleaning.

NOTICE: Remove all products from the case before proceeding with

cleaning procedure.

NOTICE: Acrylic air deflector requires special washing procedures to

prevent hazing and yellowing of material. Clean as described

in “Acrylic Air Deflector Cleaning” section of this manual.

Note: For major spills or foreign material buildup use complete weekly cleaning

instructions.

Note: Detergents are not recommended and do not use abrasive cleaners or pads to

prevent scratching of surfaces.

1. Dip rag in warm soapy water and ring out thoroughly. Wipe complete interior of

case and dry with soft dry towel.

2. The remaining exterior surface should be wiped down using any ammoniated

cleaners or soapy warm water and dried with soft dry towel.

3. IMPORTANT: Cleaning the clear acrylic plastic front air deflector requires

special care to prevent hazing and yellowing of material. Clean as described in

“Acrylic Air Deflector Cleaning” section of this manual.

NEVER USE paper towels (wet or dry) for cleaning or drying and never use a dry

towel.

NEVER USE glass cleaner of any kind.

Lightly dust (not wipe) surface with a damp Micro Fiber towel or chamois. The surface

can then be washed using a small amount of dishwashing detergent such as Dawn or

Joy and lukewarm water. Use a Micro Fiber towel or chamois, applying only light

pressure. The cloth or chamois must be kept free of grit by frequently rinsing. Rinse

surface with clear water and dry by blotting with a damp Micro Fiber towel or chamois.

LMD E3670

Weekly Cleaning

NOTICE: Shut off lights and disconnect power and remove all products

from case. Allow sufficient time for the unit to reach room

temperature before proceeding with cleaning.

NOTICE: Avoid splashing or soaking any electrical components with

water to prevent electrical damage to the case.

NOTICE: Remove all products from case before proceeding with

cleaning procedure.

NOTICE: Acrylic front air deflector requires special washing procedures

to prevent hazing and yellowing of material.

Note: Detergents are not recommended and do not use abrasive cleaners or pads to

prevent scratching of surfaces.

EVAPORATOR FAN

HOUSING (HINGED)

EVAPORATOR FAN

HOUSING LATCH

ONE ON EACH END

SHELVES

DISPLAY DECK PAN(S)

GRILLE AIR

RETURN

ACRYLIC AIR

DEFLECTOR

SLOTTED BACK PANEL(S)

SHELF

LIGHT

DISPLAY DECK

PAN LIFTING HOLES

GRILL AIR RETURN

BRACKETS

SLOTTED BACK PANEL

LIFTING HOLES

SOME MODELS MAY HAVE

MORE PANELS,SHELVES &

DISPLAY DECKS

LMD E3670

1. Remove the Acrylic Air Deflector by lifting it up and out of Air Deflector Retainer.

Clean as described:

IMPORTANT: Cleaning the clear acrylic plastic front air deflector requires

special care to prevent hazing and yellowing of material. Clean as described in

“Acrylic Air Deflector Cleaning” section of this manual.

NEVER USE paper towels (wet or dry) for cleaning or drying and never use a dry

towel.

NEVER USE glass cleaner of any kind.

Lightly dust (not wipe) surface with a damp Micro Fiber towel or chamois. The surface

can then be washed using a small amount of dishwashing detergent such as Dawn or

Joy and lukewarm water. Use a Micro Fiber towel or chamois, applying only light

pressure. The cloth or chamois must be kept free of grit by frequently rinsing. Rinse

surface with clear water and dry by blotting with a damp Micro Fiber towel or chamois.

2. Remove interior Shelves and Shelf Lights from unit as described in the “Shelving

Installation” section of this manual.

3. Remove the Display Deck Pan(s) from unit by grabbing the lifting holes located on front

lip of Display Deck Pan(s) and lifting them up and out of unit.

4. Remove the Grill Air Return by lifting it up and off the Grill Air Return Brackets.

5. Remove the Slotted Back Panel(s) from unit. Lift the Slotted Back Panel up until the

bottom of panel clears the evaporator cover and then swing the bottom of the Slotted

Back Panel out until the top of panel clears the top light housing flange.

6. Dip rag in warm soapy water and ring out thoroughly. Clean all shelves, Display

Deck(s), Grill Air Return and Slotted Back Panel(s) and dry with soft dry towel.

7. Clean the entire interior of the case using warm soapy water. Wipe off all soapy water

with a damp cloth and allow to dry. (DO NOT use solvents such as Acetone, Benzene,

Carbon Tetrachloride, and Lacquer Thinners)

Clean under the Evaporator Fan Housing and Drain area by lifting (2) Evaporator Fan

Housing latch levers up and swinging the hinged Evaporator Fan Housing up and out of

the way.

8. Remove the honeycomb air diffuser(s) from upper air duct track. Loosen thumb screws

on Retainer located behind diffuser. Retainer will drop down allowing diffuser to be

pulled out of case.

RETAINER

THUMB SCREW

AIR DIFFUSER

RETAINER

THUMB SCREW

AIR DIFFUSER

9. Clean honey comb air diffuser with warm soapy water and a brush. Rinse thoroughly

and allow to dry.

10. Reassemble all components in reverse order.

NOTE: Depending on the amount of usage and spillage of foreign material, some fasteners

may have to be removed and parts disassembled to allow proper cleaning of the unit.

LMD E3670

MISTER OPTION

This case may be supplied with a mister option kit. The mister rail and mister nozzles are

installed in the case at the factory along with the mister inlet hose.

Assemble the controller and pressure tank in desired location as outlined in the instructions

included with the mister kit and attach to the mister inlet hose.

Set the control interval cycle times between mist operation and the duration of misters on time to

achieve desired mister results. It is recommended to try to have as much time between mister

operation and the shortest mist on time as possible to achieve the desired results. If to much

water is added to the case it could cause refrigeration coil to build ice and cause poor case

performance.

The mist nozzles can be tilted in and out to desired location. It is recommended that the nozzles

point to the inside of the case to prevent water mist on floor.

The nozzle spray mist pattern can also be adjusted by turning the end of each nozzle.

MISTER NOZZELS

MISTER INLET

HOSE

MISTER RAIL

STAGGERED

SHELVES

LMD E3670

SERVICE INFORMATION

Before any service work

is performed on the

case, make sure all

power is disconnected

to the case.

To find a service company in your area, please visit our website at

www.federalindustries.com. There you can also find self-service tools to

help you get the answers you need faster!

For Warranty Service Requests & ALL Technical Support please contact:

- Phone: (800) 356-4206 and choose the Tech Support/Warranty Option

- Email: Service@federalind.com

For Warranty Compressors please contact the Parts Department:

- Phone: (800) 356-4206 and choose the Warranty Parts Option

- Email: Parts@Federalind.com

Federal Industries has partnered with Parts Town for ALL Non-Warranty Part

Identification, Pricing, Lead Times, Orders & Freight Quotes. Please contact

Parts Town directly if you need parts:

- Website: PartsTown.com

- Email: [email protected]om

- Phone: 833-809-8188

Special Service Situations

There are rare occasions when the refrigerant charge must be evacuated from a case in

order to perform service work. In those situations, Federal Industries recommends that

the refrigerant charge be evacuated into a recovery system to prevent the possibility of

hydrofluorocarbons (HFC’s) from being released into the atmosphere.

If moisture or liquid is observed around or under a Federal Industries case, an immediate

investigation should be made by qualified personnel to determine the source of the

moisture or liquid. The investigation made should determine if the case is

malfunctioning or if there is a simple housekeeping problem.

NOTICE: Moisture or liquid around or under a case is a potential slip/fall

hazard for persons walking by or working in the general area of

the case. Any case malfunction or housekeeping problem that

creates a slip/fall hazard around or under a case should be

corrected immediately.

CAUTION

RISK OF ELECTRIC SHOCK

DISCONNECT POWER BEFORE

SERVICING UNIT

LMD E3670

Pre-Service Checklist

You may avoid the cost and inconvenience of an unnecessary service call by first

reviewing this checklist of frequently encountered situations that can cause unsatisfactory

case performance.

CAUTION: Before servicing case, turn off power at the main breaker of fuse box.

Case Does Not Operate

Check for disconnected power supply.

Check for tripped breaker on blown fuse.

Check that the thermostat display is on and that the green indicator light

is lit.

Lights Do Not Operate

Check that light switch is on.

Check for tripped breaker or blown fuse.

Check that light housing cords are plugged in correctly to sockets in the

tower

Case Temperature Too Warm

Check that the cold air inlet and outlet slots are not blocked.

Check for a blocked or dirty condenser coil.

Check for cold airflow. Lack of adequate cold airflow could indicate a defective

evaporator fan or a blocked evaporator coil. Check that paper or foreign materials

are not blocking evaporator. If the evaporator coil is blocked due to excessive

frost, put into manual defrost. Excessive frost can buildup overtime if the case is

set too cold or if there is excessive humidity in the store.

Check all the fans in the evaporator compartment and tower are running.

Case Sweating Note: Some interior sweating is normal on this case.

Check room ambient – Case is designed to operate in an environment not to

exceed 75ºF and 55% relative humidity.

Check all the fans in the evaporator compartment are running.

Overflow of Condensate Pan

Check that drain in bottom of tub floor is not plugged.

Check that drain trap to the condensate pan is not plugged

Overflow of Optional Condensate Pump:

Check that drain in bottom of tub floor is not plugged.

Check that drain trap to the condensate pan is not plugged

Check that drain lines from pump is not plugged or pinched.

Check to see that pump float is operating correctly.

Verify that pump is plugged in and has power.

Replace pump if still not pumping condensate.

LMD E3670

SALE & DISPOSAL

If you the owner sells or gives away this Federal Industries case it is the owner’s

responsibility to make sure that all safety labels and the Installation-Service Manual are

included with it. If you need replacement labels or manuals, Federal Industries will

provide them free of charge. Contact the customer service department at Federal

Industries at (800) 356-4206.

The customer service department at Federal Industries should be contacted at the time of

sale or disposal of your case so records may be kept of its new location.

If you sell or give away your Federal Industries case, you should evacuate the refrigerant

charge before shipment. Federal Industries recommends that the charge be evacuated into

a recovery system to prevent the possibility of HCFC’s from being released into the

atmosphere.

LMD E3670

REFRIGERATION OPERATION

Refrigeration R449

Charge

CHARGED IN FIELD

Remote Low Press. Switch Cut In

psi

Remote Low Press. Switch Cut Out

15 psi

Adjustable Head Master

200 psi

Remote High Press. Switch Cut Out

400 psi

The remote models are designed to use 449A refrigerant and shipped from the factory with the

evaporator coil, expansion valve, sight glass and refrigerant solenoid valve. Drier filter most be

installed in field for proper operation. Electronic control opens and closes a refrigeration

solenoid valve located on the suction line and shuts off the refrigeration flow to the unit and

initiates a pump down cycle. This will allow the remote low-pressure switch to open and shut off

remote compressor.

The condensing unit and pressure controls are optionally supplied from the factory for remote

location installation. The condensing unit must be mounted and wired by the installer. The high

low-pressure switch must be wired in series with the compressor power supply as shown in

diagram below.

1. Mount condensing unit indoors as close to the remote display case as practical. The

refrigeration line should be as short as possible and must not exceed 30 feet.

2. All refrigeration and/or electrical materials between the condensing unit and display case are

to be supplied by installing contractor.

3. Route properly sized and designed refrigeration lines from the condensing unit to the cabinet.

Horizontal suction lines should be pitched downward towards the condensing unit at least ½”

per 10’ run to aid the oil drainage. A “P” trap must be installed in the suction line at the foot

of every riser to insure oil return. Dry nitrogen must be used to flow through tubing while

brazing refrigeration lines.

4. Suction line must be insulated the entire length with Armaflex (or equivalent). Do not run

liquid line inside insulation with suction line.

5. The remote high/low-pressure control must be installed and set pressures by the installer.

6. Leak check condensing unit, cabinet, and all connecting tubing. Cabinet and condensing unit

tubing should be checked to insure no leaks occurred during shipping or from rough

handling. Make certain all refrigeration valves are opened and evacuate system to 500

microns. Charge the system with refrigerant type specified on the data plates.

REMOTE

HIGH LOW

PRESSURE

CONTROL

LIQUID LINE

SUCTION LINE (INSULATED)

REMOTE

CONDENSING

UNIT

EVAPORATOR

COILS

DISPLAY CASE

EXPANSION

VALVE

HIGH

LOW

LIQUID LINE

SOLENOID VALVE

SIGHT GLASS

DRIER/FILTER

FIELD CONNECTION

HOT

FUSED

POWER

SUPPLY

DEFROST

TERMINATE

PROBE

ELECTRONIC

CONTROL

AIR TEMP. CONTROL PROBE

FUSED

CASE

POWER

LMD E3670

Electronic Expansion Valve (EEV) After 1/20

A traditional TXV uses springs and a temperature bulb to open and close a valve port that

controls the flow of refrigerant entering the evaporator coil. An electronic expansion valve

(EEV) controls the refrigerant flow much more precisely, increasing the performance and

efficiency of the refrigeration system. The EEV controls the flow of Refrigerant by opening and

closing the valve port based on the response to signals sent to the EEV by an electronic

controller. The electronic Control bases these signals by processing information provided from a

temperature sensor and pressure transducer located on the discharge side of the evaporator coil.

These sensors monitor the evaporator superheat and protects the compressor from any liquid

flood back under low superheat conditions.

EEV Controller Settings

The electronic expansion valve controller also allows the use of different types of refrigerants

without the need to change the expansion valve.

The controller is set from the factory to run on 449A refrigerant and will not need any changes to

the control unless another refrigerant is used.

Note: Check your State and Local regulations for approved refrigerants for your install

location. Federal Industries is not liable for any alternate refrigerants used.

The control is located in the front left corner of evaporator tub under the Display Deck Pan.

Note: Never change any of the other setting other than the refrigerant type. It may also be

necessary to change the superheat setting only when using a different refrigerant.

Changing Refrigerant

 Access the set point mode by pressing and holding the button until Ctl displays on the

screen.

 Use the up or down arrows to advance through the available set points until rFG

displays on the screen and press the botton.

 Use the up or down arrows until the desired refrigeration displays on the screen and

press and hold the button until rFG once again displays on the screen.

 Press the to return to escape the settings menue.

Changing Superheat

 Access the set point mode by pressing and holding the button until Ctl displays on the

screen.

 Use the up or down arrows to advance through the available set points until SSP

displays on the screen and press the botton.

 Use the up or down arrows to set the desired superheat displays on the screen and

press and hold the button until SSP once again displays on the screen.

 Press the to return to escape the settings menue.

LMD E3670

PARTS LIST

ELECTRICAL COMPONENTS

QTY

PART#

QTY

PART#

QTY

PART#

CAREL TEMP. CONT. 115V

32-19864-12

TEMPERATURE PROBE

32-19866

SWITCH,ROCKER 22A

41-11066

BALLAST, 120V

(BEFORE 10/18)

39-12902

39-12904

POWER SUPPLY 12V

(BEFORE 10/18)

39-19984

SOCKET,SPRING LOADED

(BEFORE 10/18)

42-10833

SOCKET,STATIONARY

(BEFORE 10/18)

42-10834

BULB,FLORECENT T8

(BEFORE 10/18)

42-11069

42-11071

42-11069

LED, 12V 35k

(BEFORE 10/18)

42-20043-8

42-20043-5

42-20043-8

CORD,SHELF LIGHT LED WH

(BEFORE10/18)

43-20046-2

RECEPTACLE,WHITE

43-19080-A

PLATE,RECEPT SHELF LIGHT WH

M-10167-2B

POWER SUPPLY 24V

(AFTER 10/18)

39-20555

LED CEILING, 24V 35k

(AFTER 10/18)

42-20871-42C35

42-20871-72C35

42-20871-42C35

CORD CEILING LED WH

(AFTER10/18)

43-20867-8W

LED, 24V 35k

(AFTER 10/18)

42-20871-42C35

42-20871-30C35

42-20871-42C35

CORD,SHELF LED WH

(AFTER10/18)

43-20862-6W

CORD,TOP LED WH

(AFTER10/18)

43-20868-3W

HARNESS,5 LIGHT

43-20147

REFRIGERATION COMPONENTS

MOTOR,FAN 115V. 60Hz,

41-17981

BLADE,8" 5 BLADE, 15D SUCT

72-32507

72-14569

72-32507

HARNESSWIRE,DOUBLE FAN

43-19749

TXV, 3/8X1/2ODF 30"CAP

(BEFORE 1/20)

32-19408

32-19750

32-20212

TXV, 3/8X1/2ODF 30"CAP

(AFTER 1/20)

32-20874

32-21063

EEV, RSV-130 3/8X1/2ODF

(AFTER 1/20)

32-21226

EEV CONTROL

(AFTER 1/20)

32-21223

TEMP. SENSOR EEV

(AFTER 1/20)

32-21224

PRESSURE TRANSDUCER

(AFTER 1/20)

32-21225

SIGHT GLASS 3/8 ODF

32-54011

COIL,EVAP MULTI DECK

33-20026-1

33-20026-2

33-20026-3

VALVE, ACCESS 1/4OD, STR.

72-17182

VALVE, ACCESS 5/8 COPPER

82-14323

SOLENOID VALVE

32-14325

COIL,SOLENOID120-240V

41-14324

SWELL LATCH

66-13640

HINGE,PLASTIC

66-14094

MISC COMPONENTS

PANEL,END GLASS

50-20029

PANEL,END GLASS REFLECTIVE LEFT

50-20029-1L

PANEL,END GLASS REFLECTIVE RIGHT

50-20029-1R

PANEL,LAMINATE FRONT (COLOR REQD)

W11732-1

W11732-2

W11732-3

PANEL,END LAM (COLOR REQD)

68-20042-L

PANEL,END LAM (COLOR REQD)

68-20042-R

LEG,1/2-13 X 2.5

65-11486

CASTER,2-1/2"

65-17352

ECONO COVER,56" DBL ACTION WHITE

65-19464

65-19462

65-19464

AIR DIFFUSER

W11724-1

W11724-2

W11724-3

THERMOPLASTIC DRAIN

84-70225

DRAIN ASSY,TUBE

SA5522

SA5523

TUBING,3/4 ID CLEAR PVC

25'

15-19609

25'

15-19609

25'

15-19609

SHELF,WELD WHITE

SA5458-1

SA5458-2

SA5458-1

THERMOMETER

32-13662

DEFLECTOR,AIR FRONT

15-20030-1

15-20030-2

NIGHT CURTAIN

65-19464

65-19462

65-19464

SECURITY COVER (OPTION) NAT ALUM

SA5658-1B

SA5658-2B

SA5658-1B

SECURITY COVER (OPTION) BLACK TEXT

SA5658-1

SA5658-2

SA5658-1

DECAL,CATION ELECTRICAL SHOCK

91-12340

LOGO,FEDERAL

91-72523

LMD4878R

LMD7278R

LMD9678R

LMD E3670

Case Wiring Diagrams

LMD48 & 72 (BEFORE (10/18)

COLOR CODE

B = BLUE

Y = YELLOW

W = WHITE

BLK = BLACK

CONTROL

120V/1PH/60HZ

DARK LINES REPRESENT

(3) CONDUCTOR CORD

LMD48 & LMD72

91-20150 12/31/13

FAN

4 5

RELAY

REMOTE

COMPRESSOR

HI/LO PRESS SW

OPTIONAL REMOTE

MOUNTED & WIRED

COMPONENTS

ALL FIELD WIRED

SEPARATE

POWER SUPPLY

PRESSURE

CONTROL

REMOTE

BLK

BLK/RIB

BLK

PLUG

BLK/RIB

BLK

BLK/RIB

BLK

PLUG

REFRIG

SOLENOID

BLK

BLK/RIB

BLK

PLUG

BLK/RIB

BLK

4 5

6 7

CAREL

CONTROL

TEMP PROBE

DEFROST PROBE

SHELF LIGHT

PLUG

SHELF LIGHT

PLUG

SHELF LIGHT

PLUG

BLK /B

BLK

12V POWER

SUPPLY

BALLAST

TOP LIGHT

EVAP.

FAN

EVAP.

FAN

EVAP.

FAN

FAN QTY 4' (2) 6' (3)

BLK /B

BLK

BLK /B

TYPICAL SHELF LIGHT CIRCUIT.

LIGHT QTY PER POWER SUPPLY

AND POWER SUPPLY QUANTITY

WILL VARY BY MODEL

TYPICAL TOP LIGHT CIRCUIT

LIGHT QUANTITY AND BALLAST

QUANTITY WILL VARY BY MODEL

BLK

BLK /B

BLK

BLK /B

BLK

TOP LIGHT

LMD96 (BEFORE (10/18)

COLOR CODE

B = BLUE

Y = YELLOWW = WHITE

BLK = BLACK

CONTROL

120V/1PH/60HZ

DARK LINES REPRESENT

(3) CONDUCTOR CORD

LMD96

91-20150-1 7/9/14

FAN

RELAY

REMOTE

COMPRESSOR

HI/LO PRESS SW

OPTIONAL REMOTE

MOUNTED & WIRED

COMPONENTS

ALL FIELD WIRED

SEPARATE

POWER SUPPLY

PRESSURE

CONTROL

REMOTE

BLK

BLK/RIB

BLK

PLUG

BLK/RIB

BLK

BLK/RIB

BLK

PLUG

REFRIG

SOLENOID

BLK

BLK/RIB

BLK

PLUG

BLK/RIB

BLK

4 5

6 7

CAREL

CONTROL

TEMP PROBE

DEFROST PROBE

SHELF LIGHT

PLUG

SHELF LIGHT

PLUG

SHELF LIGHT

PLUG

BLK /B

BLK

12V POWER

SUPPLY

BALLAST

BLK

EVAP.

FAN

BLK/RIB

BLK

PLUG

TOP LIGHT

EVAP.

FAN

EVAP.

FAN

EVAP.

FAN

BLK /B

BLK

BLK /B

TYPICAL SHELF LIGHT CIRCUIT.

LIGHT QTY PER POWER SUPPLY

AND POWER SUPPLY QUANTITY

WILL VARY BY MODEL

TYPICAL TOP LIGHT CIRCUIT

LIGHT QUANTITY AND BALLAST

QUANTITY WILL VARY BY MODEL

BLK

BLK /B

BLK

BLK /B

BLK

LMD E3670

LMD48 & 96 (AFTER 10/18 BEFORE 1/20)

COLOR CODE

B = BLUE

Y = YELLOW

W = WHITE

BLK = BLACK

CONTROL

120V/1PH/60HZ

DARK LINES REPRESENT

(3) CONDUCTOR CORD

LMD48 & LMD96

91-21016-1 7/9/18

FAN

4 5

RELAY

REMOTE

COMPRESSOR

HI/LO PRESS SW

OPTIONAL REMOTE

MOUNTED & WIRED

COMPONENTS

ALL FIELD WIRED

SEPARATE

POWER SUPPLY

PRESSURE

CONTROL

REMOTE

REFRIG

SOLENOID

BLK

4 5

6 7

CAREL

CONTROL

TEMP PROBE

DEFROST PROBE

TOP LIGHT

CEILING LIGHT

BLK /B

BLK

POWER

SUPPLY

LMD96 ONLY

BLK /B

BLK

BLK /B

BLK

BLK /B

BLK

SHELF LIGHT

BLK /B

BLK

BLK /B

BLK

SHELF LIGHT

BLK /B

BLK

BLK /B

BLK

SHELF LIGHT

PLUG

BLK /B

BLK

LMD48 LIGHT CIRCUIT SHOWN.

LMD96 USES (2) OF THESE LIGHT

CIRCUITS (1) FOR EACH SIDE OF CASE.

BLK

BLK/RIB

BLK

PLUG

BLK/RIB

BLK

BLK/RIB

BLK

PLUG

BLK

BLK/RIB

BLK

PLUG

BLK/RIB

BLK

EVAP.

FAN

BLK/RIB

BLK

EVAP.

FAN

EVAP.

FAN

EVAP.

FAN

LMD72 (AFTER 10/18 BEFORE 1/20)

COLOR CODE

B = BLUE

Y = YELLOW

W = WHITE

BLK = BLACK

CONTROL

120V/1PH/60HZ

DARK LINES REPRESENT

(3) CONDUCTOR CORD

LMD72

91-21016-2 7/9/18

FAN

4 5

RELAY

REMOTE

COMPRESSOR

HI/LO PRESS SW

OPTIONAL REMOTE

MOUNTED & WIRED

COMPONENTS

ALL FIELD WIRED

SEPARATE

POWER SUPPLY

PRESSURE

CONTROL

REMOTE

BLK

BLK/RIB

BLK

PLUG

BLK/RIB

BLK

BLK/RIB

BLK

PLUG

REFRIG

SOLENOID

BLK

BLK/RIB

BLK

PLUG

BLK/RIB

BLK

4 5

6 7

CAREL

CONTROL

TEMP PROBE

DEFROST PROBE

TOP LIGHT

CEILING LIGHT

BLK /B

BLK

POWER

SUPPLY

EVAP.

FAN

EVAP.

FAN

EVAP.

FAN

BLK /B

BLK

BLK /B

BLK

BLK /B

BLK

SHELF LIGHT

BLK /B

BLK

BLK /B

BLK

SHELF LIGHT

BLK /B

BLK

BLK /B

BLK

SHELF LIGHT

PLUG

BLK /B

BLK

TOP LIGHT

BLK /B

BLK

SHELF LIGHT

BLK /B

BLK

BLK /B

BLK

SHELF LIGHT

BLK /B

BLK

BLK /B

BLK

SHELF LIGHT

PLUG

BLK /B

BLK

LMD E3670

LMD48 & 96 EEV (AFTER 1/20)

COLOR CODE

B = BLUE

Y = YELLOWW = WHITE

BLK = BLACK

CONTROL

120V/1PH/60HZ

DARK LINES REPRESENT

(3) CONDUCTOR CORD

LMD48 & LMD96 EEV

91-21016-3 10/21/19

FAN

4 5

RELAY

REMOTE

COMPRESSOR

HI/LO PRESS SW

OPTIONAL REMOTE

MOUNTED & WIRED

COMPONENTS

ALL FIELD WIRED

SEPARATE

POWER SUPPLY

PRESSURE

CONTROL

REMOTE

BLK

BLK/RIB

BLK

PLUG

BLK/RIB

BLK

BLK/RIB

BLK

PLUG

REFRIG

SOLENOID

BLK

BLK/RIB

BLK

PLUG

BLK/RIB

BLK

4 5

6 7

CAREL

CONTROL

TEMP PROBE

DEFROST PROBE

TOP LIGHT

CEILING LIGHT

BLK /B

BLK

POWER SUPPLY

EVAP.

FAN

EVAP.

FAN

EVAP.

FAN

BLK /B

BLK

BLK /B

BLK

BLK /B

BLK

SHELF LIGHT

BLK /B

BLK

BLK /B

BLK

SHELF LIGHT

BLK /B

BLK

BLK /B

BLK

SHELF LIGHT

PLUG

BLK /B

BLK

LIGHT SWITCH

TEMP & VALVE

CONTROL

EEV

4 3

SUCTION SENSOR

PRESS. TRANS.

Blk

Red

Wht

Yel

Grn

Org

Red

RSV-Blue

Empty

GrnBlk

TEMP 3

Red TEMP 2TEMP 1

RIBBON

CABLE

BLK

LMD48 LIGHT CIRCUIT SHOWN.

LMD96 USES (2) OF THESE LIGHT

CIRCUITS (1) FOR EACH SIDE OF CASE.

BLK

BLK/RIB

BLK

PLUG

EVAP.

FAN

LMD48 & 96 EEV (AFTER 7/1/24)

COLOR CODE

B = BLUE

Y = YELLOW

W = WHITE

BLK = BLACK

CONTROL

DARK LINES REPRESENT

(3) CONDUCTOR CORD

LMD48 & LMD96 EEV

91-21016-13 6/7/24

FAN

4 5

RELAY

REMOTE

COMPRESSOR

HI/LO PRESS SW

OPTIONAL REMOTE

MOUNTED & WIRED

COMPONENTS

ALL FIELD WIRED

SEPARATE

POWER SUPPLY

PRESSURE

CONTROL

REMOTE

BLK

BLK/RIB

BLK

PLUG

BLK/RIB

BLK

BLK/RIB

BLK

PLUG

REFRIG

SOLENOID

BLK

BLK/RIB

BLK

PLUG

BLK/RIB

BLK

4 5

6 7

CAREL

CONTROL

TEMP PROBE

DEFROST PROBE

TOP LIGHT

CEILING LIGHT

BLK /B

BLK

POWER SUPPLY

EVAP.

FAN

EVAP.

FAN

EVAP.

FAN

BLK /B

BLK

BLK /B

BLK

BLK /B

BLK

SHELF LIGHT

BLK /B

BLK

BLK /B

BLK

SHELF LIGHT

BLK /B

BLK

BLK /B

BLK

SHELF LIGHT

PLUG

BLK /B

BLK

LIGHT SWITCH

TEMP & VALVE

CONTROL

EEV

5 4

2 1

SUCTION SENSOR

PRESS. TRANS.

Blk

Red

Wht

Yel

Grn

Org

Red

RSV-Blue

Empty

ABSh

GrnBlk

TEMP 3

Red TEMP 2TEMP 1

RIBBON

CABLE

BLK

LMD48 LIGHT CIRCUIT SHOWN.

LMD96 USES (2) OF THESE LIGHT

CIRCUITS (1) FOR EACH SIDE OF CASE.

BLK

BLK/RIB

BLK

PLUG

EVAP.

FAN

FIELD WIRE

CONNECTION

LMD E3670

LMD72 EEV (AFTER 1/20)

COLOR CODE

B = BLUE

Y = YELLOWW = WHITE

BLK = BLACK

CONTROL

120V/1PH/60HZ

DARK LINES REPRESENT

(3) CONDUCTOR CORD

LMD72 EEV

91-21016-4 10/21/19

FAN

4 5

RELAY

REMOTE

COMPRESSOR

HI/LO PRESS SW

OPTIONAL REMOTE

MOUNTED & WIRED

COMPONENTS

ALL FIELD WIRED

SEPARATE

POWER SUPPLY

PRESSURE

CONTROL

REMOTE

BLK

BLK/RIB

BLK

PLUG

BLK/RIB

BLK

BLK/RIB

BLK

PLUG

REFRIG

SOLENOID

BLK

BLK/RIB

BLK

PLUG

BLK/RIB

BLK

4 5

6 7

CAREL

CONTROL

TEMP PROBE

DEFROST PROBE

TOP LIGHT

CEILING LIGHT

BLK /B

BLK

POWER SUPPLY

EVAP.

FAN

EVAP.

FAN

EVAP.

FAN

BLK /B

BLK

BLK /B

BLK

BLK /B

BLK

SHELF LIGHT

BLK /B

BLK

BLK /B

BLK

SHELF LIGHT

BLK /B

BLK

BLK /B

BLK

SHELF LIGHT

PLUG

BLK /B

BLK

TOP LIGHT

BLK /B

BLK

SHELF LIGHT

BLK /B

BLK

BLK /B

BLK

SHELF LIGHT

BLK /B

BLK

BLK /B

BLK

SHELF LIGHT

PLUG

BLK /B

BLK

LIGHT SWITCH

TEMP & VALVE

CONTROL

EEV

4 3

SUCTION SENSOR

PRESS. TRANS.

Blk

Red

Wht

Yel

Grn

Org

Red

RSV-Blue

Empty

GrnBlk

TEMP 3

Red TEMP 2TEMP 1

RIBBON

CABLE

BLK

LMD72 EEV (AFTER 7/1/24)

COLOR CODE

B = BLUE

Y = YELLOWW = WHITE

BLK = BLACK

CONTROL

DARK LINES REPRESENT

(3) CONDUCTOR CORD

LMD72 EEV

91-21016-14 06/07/24

FAN

RELAY

REMOTE

COMPRESSOR

HI/LO PRESS SW

OPTIONAL REMOTE

MOUNTED & WIRED

COMPONENTS

ALL FIELD WIRED

SEPARATE

POWER SUPPLY

PRESSURE

CONTROL

REMOTE

BLK

BLK/RIB

BLK

PLUG

BLK/RIB

BLK

BLK/RIB

BLK

PLUG

REFRIG

SOLENOID

BLK

BLK/RIB

BLK

PLUG

BLK/RIB

BLK

4 5

6 7

CAREL

CONTROL

TEMP PROBE

DEFROST PROBE

TOP LIGHT

CEILING LIGHT

BLK /B

BLK

POWER SUPPLY

EVAP.

FAN

EVAP.

FAN

EVAP.

FAN

BLK /B

BLK

BLK /B

BLK

BLK /B

BLK

SHELF LIGHT

BLK /B

BLK

BLK /B

BLK

SHELF LIGHT

BLK /B

BLK

BLK /B

BLK

SHELF LIGHT

PLUG

BLK /B

BLK

TOP LIGHT

BLK /B

BLK

SHELF LIGHT

BLK /B

BLK

BLK /B

BLK

SHELF LIGHT

BLK /B

BLK

BLK /B

BLK

SHELF LIGHT

PLUG

BLK /B

BLK

LIGHT SWITCH

TEMP & VALVE

CONTROL

EEV

4 3

SUCTION SENSOR

PRESS. TRANS.

Blk

Red

Wht

Yel

Grn

Org

Red

RSV-Blue

Empty

GrnBlk

TEMP 3

Red TEMP 2TEMP 1

RIBBON

CABLE

BLK

FIELD WIRE

CONNECTION

BLK

LMD E3670

Condensing unit Installation Instructions

LMD MODELS with remote top mounted Condensing unit

Condenser unit must have a minimum of 12” of top clearance to provide

condenser air to discharge. Ceiling tiles can be removed if needed.

Mounting the Condensing Unit Assembly to Top of LMD unit.

This is when condensing unit assembly is mounted directly on top of LMD unit so they become

one unit attached together. Rigid or optional flexible refrigeration lines can be used for this

application.

Once LMD unit is located in its final position and leveled the condensing unit assembly can then

be installed on to the top of the LMD unit.

-Remove the condensing unit assembly from skid by removing the (4) screws holding it to skid.

-Raise the condensing unit assembly up to the height of the merchandiser top. It is

recommended using a lift to get the condensing unit to the top, the condensing unit assembly,

without the shipping skid weighs approx. 180 pounds. To prevent damage to front or side glass,

install the condensing unit assembly from the back of the merchandiser.

-Using the lift handles provided, slide the condensing unit assembly off the skid and onto the

top of the merchandiser. Be careful of the refrigeration lines that are protruding above the

merchandiser top.

-Locate the condensing unit flush with the back of the merchandiser so that the refrigeration

fittings are aligned. Fasten the condensing unit assembly to the top of merchandiser using

provided (4) #1/4 self-drilling screws as shown in diagram below (do not over tighten).

-Attach refrigeration lines as described in Refrigeration Line Connections section.

FRONT

CONDENSING

UNIT ASSEMBLY

(4) 1/4 SELF DRILLING

SCREWS

CONDENSING UNIT

BASE FLUSH WITH BACK

IF MERCHANDISER

CONDENSING UNIT

BASE FLUSH WITH BACK

IF MERCHANDISER

3" LMD48

10.2 LMD72

22.2 LMD96

LMD E3670

Mounting the Condensing Unit Assembly to Frame Structure above LMD unit.

This is when the condensing unit assembly is mounted directly above LMD unit onto an existing

frame work or structure and it is not attached to the LMD case. This allows the LMD unit to

move while the condensing unit remains stationary.

A frame work or support structure must be designed and installed by the field contractor as

needed per application. This application requires flexible refrigeration lines.

-Remove the condensing unit assembly from skid by removing the (4) screws holding it to skid.

-Raise the condensing unit assembly up to the height of the frame or support structure in desired

location above the top of the merchandiser top. It is recommended using a lift to get the

condensing unit on to structure, the condensing unit assembly, without the shipping skid weighs

approx. 180 pounds.

-Using the lift handles provided, to slide the condensing unit assembly off of the skid and onto

the top of support structure and locate as needed. Fasten the condensing unit assembly to the

frame or support structure using provided (4) #1/4 self-drilling screws as shown in diagram

below (do not over tighten).

-Once the condensing is secured in desired location the LMD unit can be located and leveled in

its final position under the condensing unit.

-Attach refrigeration lines as described in Refrigeration Line Connections section.

CONDENSING

UNIT ASSEMBLY

FRAME OR STRUCTURE

DESIGNED AND INSTALLED

BY OTHERS. MUST BE SUPPORTED

BY WALL OR CEILING AND DESIGNED

SPECIFIC TO EACH APPLICATION.

8.0APPROX

Drop Ceiling or False Ceiling Cut Out:

TOP CONDENSING UNIT MUST BE ALLOWED

ENOUGH SPACE TO ALLOW HOT CONDENSER

EXHAUST AIR TO ESCAPE AND ALLOW COOLER

AIR TO ENTER THE INTAKE SIDE OF CONDENSER.

DROP CEILING OR FALSE CEILING MUST HAVE

A RECTANGULAR HOLE CUT DIRECTLY ABOVE

CONDENSER ASSEMBLY.

HOLE MUST BE A MINIMUM OF 32" DEEP AND A

MINIMUM OF 6" LONGER THEN THE ENTIRE

CONDENSER ASSEMBLY. THE LARGEST HOLE

POSSIBLE IS ALWAYS THE BEST RULE.

Shroud Assembly Installation (Optional)

LMD E3670

Once the condensing unit is installed to the merchandiser unit the outer shroud needs to be

installed to hide the condensing unit assembly.

-Remove the shroud assembly from the skid by removing the screws along each end.

-Set the shroud on top of merchandiser. The sides must hang over top of unit until they are flush

with the spacer brackets that are attached to the back of merchandiser. The shroud needs to be

centered from side to side and even front to back of merchandiser.

-Attach each end of shroud assembly to top of merchandiser using provided (8) #8 self-drilling

screws. (There are no screws along front panel to allow removal of top valance on merchandiser)

-Attach the support brackets to the top back side of each shroud side panel using provided (2) #8

self-drilling screws per side.

-Use a square to hold the shroud side panels square and attach the support brackets to the back

side of the merchandiser using provided (3) #8 self-drilling screws per side.

SHROUD ASSEMBLY

SUPPORT

BRACKETS

SUPPORT

BRACKETS

#8 SELF DRILLING

SCREWS (3) PER SIDE

#8 SELF DRILLING

SCREWS (2) PER SIDE

#8 SELF DRILLING

SCREWS (4) PER SIDE

SPACER

BRACKET

Electrical Connection

DANGER: Improper or faulty hookup of electrical components in the display case can

result in severe injury or death

-Only a licensed electrician must perform all case electrical connections.

-All electrical wiring hookups must be done in accordance with all applicable local, regional, or

national electrical standards.

-A separate circuit for each display case is required to prevent other appliances on the same

circuit from overloading the circuit and causing malfunction.

-The electrical service must be grounded upon installation.

-See the electrical data plate for display case and Condensing unit assembly for proper circuit

size and wire ampacity.

There are two power sources required for this unit. The LMD merchandiser requires a 120/1/60

power supply and the condensing unit assembly requires 240/1/60 power supply. The

Merchandiser unit and the condensing unit assembly do not share any wiring. The refrigeration

system is operated by the use of a solenoid in the merchandiser and a pressure control located on

condensing unit.

LMD Merchandising Electrical Connection: The electrical connection box is on the

bottom left side of case behind the bottom Front Kick Panel. The box is accessible by removing

LMD E3670

the Front Kick Panel. (See “Panel Removal Section” of the owner’s manual for panel removal

instructions). Remove electrical box cover to access electrical connection. An optional power

cord may be provided.

FRONT KICK PANEL

FRONT KICK PANEL SCREW

PERMANENT

CONNECTION

ELECTRICAL

BOX COVER

PERMANENT

CONNECTION

ELECTRICAL BOX

WIRE CONNECTION

LMD Condenser Unit Electrical Connection: The electrical connection box is located

on the rear corner of the condensing unit assembly. Remove electrical box cover to access

electrical connection. An optional power cord may be provided.

PERMANENT

CONNECTION

ELECTRICAL BOX

WIRE CONNECTION

PERMANENT

CONNECTION

ELECTRICAL BOX

COVER

LMD E3670

Refrigeration Line Connections.

The remote merchandiser and the condensing unit are both pre-charged with refrigerant.

Reusable quick connect couplings are provided for field installation. If top condensing unit

assembly must be removed the quick connect couplings can be disconnected and reused.

After the condensing unit assembly is securely attached to the merchandiser, remove the plastic

caps from the fittings and make the refrigerant line connections as described below.

Once connection is made, it is recommended to leak test the quick connect fittings using a soap

solution to insure the joints are leak free. Both refrigeration service valves on the condensing unit

are ‘back seated’ when shipped and do not require adjustments in the field.

Rigid Refrigeration Line Connection

The Rigid refrigeration lines

are factory mounted to back

of LMD case. Once located

in proper position the

couplings between top

condensing assembly and

LMD unit can be made as

described in in Line-Set

Field Installation Instruction

section below.

Flexible Refrigeration Line Connection

CONDENSING

UNIT ASSEMBLY

REFRIGERATION CONNECTION

LOCATED ON FRONT OF

CONDENSING UNIT

REFRIGERATION LINE

SUPPORT PLATE

INSULATION WRAP

REFRIGERATION LINES

MOUNTING BRACKETS

CONDNENSER

BASE PLATE

INSULATION

WRAP

REFRIGERATION LINES

MOUNTING BRACKETS

-Cut the wire ties holding the wrapped flexible refrigeration lines to the back of LMD display case.

-Rout the lines as needed over the top of the LMD case to the front of the condensing unit where the refrigeration

connections are located. This routing will vary depending on application. Use caution to route lines so that they do

not pinch or over bend.

-Connect couplings between top condensing assembly and LMD unit can be made as described in Line-Set Field

Installation Instruction section below.

-IMPORTANT: The refrigeration lines must be attached to the support plate using the mounting brackets. Insulation

wrap must be in the location of mounting bracket to prevent damaging lines.

-There also mounting brackets located on back of condensing unit. These may or may not be used depending on the

particular routing of the lines. It is just important that the lines are secured in such a manner to prevent damage to

lines if the LMD unit is moved around. Any extra Refrigeration line should be left loose behind the LMD unit to

allow LMD to be moved around without pulling on line set.

CONDENSING

UNIT ASSEMBLY

REFRIGERATION LINES

ARE MOUNTED TO BACK

OF LMD UNIT.

REFRIGERATION CONNECTION

LOCATED ON BACK OF

CONDENSING UNIT

LMD E3670

Refrigeration Line Disconnections.

Reusable quick connect couplings are provided for field installation. If top condensing unit

assembly must be removed the quick connect couplings can be disconnected and reused.

Before disconnecting refrigeration couplings:

-Disconnect power to merchandiser unit. This will allow refrigeration solenoid to close.

-Allow condensing unit to run until the condensing unit shuts off. This allows most of the

refrigerant to be pumped into receiver tank.

-Disconnect power to top condensing unit.

LMD E3670

Drain Line

Connect the clear plastic drain line to the barbed fitting on the top of the condensate evaporator

screen. Use the hose clamp provided to secure to fitting.

-Make an inspection on the condensate drain system at this time

-Check that the white PVC drain trap assembly is securely connected to the drain at the bottom

of the case and has not come loose in shipment

-Check that the white PVC drain trap assembly is properly positioned in the inlet of the

condensate pump.

-Check that the clear PVC tubing is connected to the pump and to the electric condensate

evaporator barb fitting

Replacement Parts

LMD4878 LMD7278 LMD9678

DESCRIPTION PART NUMBER PART NUMBER PART NUMBER

CONDENSING UNIT 30-20183

CONDO PAN 40-19996 40-19996 40-19996

CONDO PAN HEATER 40-19996-1 40-19996-1 40-19996-1

LMD E3670

Top Condensing Unit Wiring

CONDENSING

UNIT

COLOR CODE

B = BLACK

BR= BROWN

R = RED

BL = BLUE

G = GREEN

CONDENSATE

PAN

HI/LO PRESS SW

91-20373-1 REV A LMD TOP COND 4'

LOW PRESS CONTROL

SET TO CUT OUT AT 15#

CUT IN AT 40#.

2X4

BOX

2X4

BOX

2X4

BOX

208-240V / 60Hz / 1PH

CONDENSING

UNIT

COLOR CODE

B = BLACK

BR= BROWN

R = RED

BL = BLUE

G = GREEN

CONDENSATE

PAN

LOW PRESS

CONTROL

LOW PRESS CONTROL

SET TO CUT OUT AT 15#

CUT IN AT 40#.

91-20373 REV A LMD TOP COND 6' & 8'

2X4

BOX

2X4

BOX

2X4

BOX

CONDENSING

UNIT

2X4

BOX

2X4

BOX

COLOR CODE

B = BLACK

BR= BROWN

R = RED

BL = BLUE

G = GREEN

208-240V

60Hz /1PH

CONDENSATE

PAN

LOW PRESS

CONTROL

LOW PRESS CONTROL

SET TO CUT OUT AT 15#

CUT IN AT 40#.

91-20373-2 LMD TOP COND 6' & 8' 2400W CONDO

2X4

BOX

208-240V

60Hz /1PH

LMD E3670

REV

CHANGE RECORD

APP’D

DATE

ECN#

ADDED LED PLUG, PART# INNER SS DOORS SES 5/9/19

ADDED EEV INFORMATION SES 10/25/19 3547

ADDED UPDATED REMOTE WIRING DIAGRAMS BJW 6/12/24 3917

Federal LMD9678R Industries 97.8'' Black Vertical Air Curtain Open Display Merchandiser with 5 Shelves

Product's Documents

Installationoperationsmanual

Specifications

Federal LMD9678R Questions and Answers

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