LMDM E3924-20
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E3924-20
REV - 2/21/25
FEDERAL INDUSTRIES
LMDM4878
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
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Contents
INTRODUCTION ......................................................................................................................................................... 3
WARNING LABELS & SAFETY INSTRUCTIONS .................................................................................................. 4
REFRIGERATION WARNING .................................................................................................................................. 5
INSTALLATION-REPAIR-DECOMMISSIONING ................................................................................................... 5
PRE-INSTALLATION PROCEDURES ..................................................................................................................... 11
INSPECTION FOR SHIPPING DAMAGE ............................................................................................................ 11
INSTALLATION INSTRUCTIONS .......................................................................................................................... 11
LOCATING THE DISPLAY CASE ....................................................................................................................... 11
Clearances ............................................................................................................................................................ 12
REMOVING PACKAGING MATERIAL .............................................................................................................. 12
REMOVING CASE FROM SHIPPING SKID ....................................................................................................... 13
LIFTING CASE ...................................................................................................................................................... 14
MOVING CASE ...................................................................................................................................................... 15
LEVELING THE CASE.......................................................................................................................................... 15
FLOOR LOCKS ...................................................................................................................................................... 15
GENERAL ELECTRICAL & GROUNDING ............................................................................................................ 16
POWER CORD ....................................................................................................................................................... 16
PANEL REMOVAL FOR ELECTRICAL ACCESS .............................................................................................. 17
Electrical Component Cover ................................................................................................................................ 17
Rear Base Panel ................................................................................................................................................... 17
REFRIGERATION ..................................................................................................................................................... 18
CHARGE AND SETTINGS ................................................................................................................................... 18
SELF-CONTAINED REFRIGERATION OPERATION ....................................................................................... 18
CONDENSATE EVAPORATOR PAN .................................................................................................................. 18
BASE COMPONENT LAYOUT ................................................................................................................................ 19
FEATURE OPERATION ............................................................................................................................................ 20
NIGHT CURTAIN OPERATION ........................................................................................................................... 20
REMOVABLE SECURITY COVER OPERATION (OPTIONAL)....................................................................... 21
ROLL COVER OPERATION (OPTIONAL ........................................................................................................... 22
REAR DOOR (OPTIONAL) ................................................................................................................................... 23
SHELVING ............................................................................................................................................................. 24
LED LIGHTS .......................................................................................................................................................... 25
OPERATING INSTRUCTIONS ................................................................................................................................. 26
CONTROL DESCRIPTION ................................................................................................................................... 26
Power Switch ....................................................................................................................................................... 26
Electronic Temperature Control .......................................................................................................................... 26
Light Switch ........................................................................................................................................................ 26
Clean Condenser Filter Light ............................................................................................................................... 26
SETTING ELECTRONIC TEMPERATURE CONTROL ..................................................................................... 27
Button Overview .................................................................................................................................................. 27
Electronic Control Operation ............................................................................................................................... 29
INITIAL START-UP .............................................................................................................................................. 30
PLACING PRODUCT INTO CASE ....................................................................................................................... 30
MAINTENANCE ........................................................................................................................................................ 31
CLEANING CONDENSER FILTER ..................................................................................................................... 31
CLEANING THE CONDENSER FILTER ............................................................................................................. 32
CLEANING INSTRUCTIONS ................................................................................................................................... 33
DAILY CLEANING ............................................................................................................................................... 33
WEEKLY CLEANING ........................................................................................................................................... 34
CATCH PAN CLEANING ..................................................................................................................................... 37
SERVICE INFORMATION ........................................................................................................................................ 38
PRE-SERVICE CHECKLIST ................................................................................................................................. 39
SALE & DISPOSAL ................................................................................................................................................... 41
PARTS LIST ............................................................................................................................................................... 42
WIRING DIAGRAMS ................................................................................................................................................ 43
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INTRODUCTION
Thank you for purchasing a Federal Industries display case. This manual contains important
instructions for installing and servicing the LMDM Model. A repair parts list and wiring
diagram is also included in the manual. Read 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.
Register your product online! Visit our website at www.federalindustries.com and register
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.
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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 next to Panels This label is located near Fan Blades
covering electrical components.
This label is located by condensing unit
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REFRIGERATION WARNING
INSTALLATION-REPAIR-DECOMMISSIONING
This is the Danger-Flammable symbol. When you see this symbol on your case or in the
manual, be alert to the potential for risk of fire or explosion.
Be sure you understand all safety messages and always follow recommended precautions and
safe operating procedures.
DANGER
Risk of fire or explosion. Flammable refrigerant used. To be repaired only by trained
service personnel. Do not puncture refrigerant tubing. Dispose of properly in accordance
with federal or local regulations
Consult repair manual/owner’s guide before attempting to service this product. All safety
precautions must be followed.
Follow handling instructions carefully in compliance with national regulations.
Auxiliary devices which may be ignition sources shall not be installed in the ductwork,
other than auxiliary devices listed for use with the specific appliance.
Do not store explosive substances (such as aerosol cans with a flammable propellant) in
this case.
Do not use an electrical appliance INSIDE the food storage compartments unless its type
is recommended by manufacturer.
Flammable refrigerant type specified on case nameplate is on the serial label.
APPLIES TO R290 REFRIGERANT MODELS ONLY! Contains a charge of R290 refrigerant
with a lower flammability limit (LFL) of .038kg/m³. See table for amount of charge.
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3. Qualification: All refrigeration and electrical maintenance, service, and repair must
be performed by a Certified Technician that is trained in the required flammable
refrigerants safety procedures. Technicians must read the entire section
“REFRIGERATION WARNINGS SECTION” of this manual.
Including but not limited to the following:
a) breaking into the refrigerating circuit.
b) opening of sealed components.
c) opening of ventilated enclosures.
4.Checks to Area: Prior to beginning work on systems containing FLAMMABLE
REFRIGERANTS, safety checks are necessary to ensure that the risk of ignition is
minimized prior to conducting work on the system.
-Capacitors are discharged: this shall be done in a safe manner to avoid possibility of
sparkling.
- No live electrical components and wiring are exposed while charging, recovering or
purging the system.
- Continuity of earth bonding.
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-Work shall be undertaken under a controlled procedure to minimize the risk of a
flammable gas or vapor being present while the work is being performed.
-All maintenance staff and others working in the local area shall be instructed on the
nature of the work being carried out. Work in confined spaces shall be avoided.
-The area shall be checked with an appropriate refrigerant detector prior to and during
work, to ensure the technician is aware of potentially toxic or flammable atmospheres.
Ensure that the leak detection equipment being used is suitable for use with all
applicable refrigerants, i.e., non-sparking, adequately sealed, or intrinsically safe.
-If any hot work is to be conducted on the refrigerating equipment or any associated
parts, appropriate fire extinguishing equipment shall be available on hand. A dry
chemical or CO2 fire extinguisher should be adjacent to the charging area.
-No person carrying out work in relation to a REFRIGERATING SYSTEM which
involves exposing any pipe work shall use any sources of ignition in such a manner that
it may lead to the risk of fire or explosion. All possible ignition sources, including
cigarette smoking, should be kept sufficiently far away from the site of installation,
repairing, removing and disposal, during which refrigerant can possibly be released to
the surrounding space. Prior to work taking place, the area around the equipment shall
be surveyed to make sure that there are no flammable hazards or ignition risks. “No
Smoking” signs shall be displayed.
-Ensure that the area is in the open or that it is adequately ventilated before breaking
into the system or conducting any hot work. A degree of ventilation shall continue during
the period that the work is carried out. The ventilation should safely disperse any
released refrigerant and preferably expel it externally into the atmosphere.
-Where electrical components are being changed, they shall be fit for the purpose and
to the correct specification so as to minimize the risk of possible ignition due to incorrect
parts. At all times, the manufacturer’s maintenance and service guidelines shall be
followed. If in doubt, consult the manufacturer’s technical department for assistance.
The following checks shall be applied to installations using flammable refrigerants:
a) the actual REFRIGERANT CHARGE is in accordance with the room size within
which the refrigerant containing parts are installed.
b) The ventilation machinery and outlets are operating adequately and are not
obstructed.
c) Markings of the equipment continue to be visible and legible. Markings and signs
that are illegible shall be corrected.
d) Refrigerating pipes or components are installed in a position where they are
unlikely to be exposed to any substance which may corrode refrigerant containing
-Repair and maintenance to electrical components shall include initial safety checks and
component inspection procedures. If a fault exists that could compromise safety, then
no electrical supply shall be connected to the circuit until it is satisfactorily dealt with. If
the fault cannot be corrected immediately but it is necessary to continue operation, an
An adequate temporary solution should be used. This shall be reported to the owner of
the Initial safety checks shall include:
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5. Repairs to sealed components
-During repairs to sealed components, all electrical supplies shall be
disconnected from the equipment being worked upon prior to any removal of sealed
covers, etc. If it is necessary to have an electrical supply to equipment during
servicing, then a permanently operating form of leak detection shall be located at the
most critical point to warn of a potentially hazardous situation.
-Particular attention shall be paid to the following to ensure that by working on
electrical components, the casing is not altered in such a way that the level of protection
is affected. This shall include damage to cables, excessive number of connections,
terminals not made to original specification, damage to seals, incorrect fitting of glands,
etc. Ensure that the apparatus is mounted securely.
Ensure that seals or sealing materials have not degraded to the point that they no
longer serve the purpose of preventing the egress of flammable atmospheres.
Replacement parts shall be in accordance with the manufacturer’s specifications.
-Do not apply any permanent inductive or capacitance loads to the circuit without
ensuring that this will not exceed the permissible voltage and current permitted for the
equipment in use.
NOTE The use of silicon sealants can inhibit the effectiveness of some types of leak
detection equipment. Intrinsically safe components do not have to be isolated prior to
working on them.
8. Detection of flammable refrigerants: Under no circumstances shall potential
ignition sources be used in the searching for or detection of refrigerant leaks. A halide
torch (or any other detector using a naked flame) shall not be used.
The following leak detection methods are deemed acceptable for all refrigerant
systems:
-Electronic leak detectors may be used to detect refrigerant leaks but, in the case of
FLAMMABLE REFRIGERANTS, the sensitivity might not be adequate or might need
recalibration. (Detection equipment shall be calibrated in a refrigerant-free area.)
Ensure that the detector is not a potential source of ignition and is suitable for the
refrigerant used. Leak detection equipment shall be set at a percentage of the LFL of
the refrigerant and shall be calibrated to the refrigerant employed, and the appropriate
percentage of gas (25 % maximum) is confirmed.
-Leak detection fluids are also suitable for use with most refrigerants but the use of
detergents containing chlorine shall be avoided as the chlorine can react with the
refrigerant and corrode the copper pipework.
NOTE Examples of leak detection fluids are
– bubble method,
– fluorescent method agents.
If a leak is suspected, all naked flames shall be removed/extinguished.
If a leakage of refrigerant is found which requires brazing, all the refrigerants shall be
recovered from the system, or isolated (by means of shut off valves) in a part of the
system
remote from the leak.
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9. Removal and Evacuation: When breaking into the refrigerant circuit to make
repairs-or for any other purpose-conventional procedures shall be used. However, for
flammable refrigerants it is important that the best practice be followed, since
flammability is a consideration. The following procedure shall be adhered to:
a. Safely remove refrigerant following local and national regulations.
b. Purge the circuit with inert gas.
c. Evacuate (optional for A2L).
d. Purge with inert gas (optional for A2L).
e. Open the circuit by cutting or brazing.
The refrigerant change shall be recovered into the correct recovery cylinders if venting
is not allowed by local and national codes. For appliances containing flammable
refrigerants, the system shall be purged with oxygen-free nitrogen to render the
appliance safe for flammable refrigerants. This process might need to be repeated
several times. Compressed air or oxygen shall not be used for purging refrigerant
systems. For appliances containing flammable refrigerants, refrigerant purging shall be
achieved by breaking the vacuum in the system with oxygen-free nitrogen and
continuing to fill until the working pressure is achieved, then venting to atmosphere, and
finally pulling down to a vacuum (optional for A2L). This process shall be repeated until
no refrigerant is within the system (optional for A2L). When the final oxygen-free
nitrogen change is used, the system shall be vented down to atmospheric pressure to
enable work to take place. Ensure that the outlet for the vacuum pump is not close to
any potential ignition sources and that ventilation is available.
10. Charging procedures: In addition to conventional charging procedures, the
following requirements shall be followed.
a. Ensure that contamination of different refrigerants does not occur when using
charging equipment. Hoses or lines shall be as short as possible to minimize the
amount of refrigerant contained in them.
b. Cylinders should be kept in an appropriate position according to the instructions.
c. Ensure that the REFRIGERATING SYSTEM is earthed prior to charging the system
with refrigerant.
d. Label the system when charging is complete (if not already).
e. Extreme care shall be taken not to overfill the REFRIGERATING SYSTEM.
11. Decommissioning: Before carrying out this procedure, it is essential that the
technician is completely familiar with the equipment and all its details. It is
recommended good practice that all refrigerants are recovered safely. Prior to the task
being carried out, an oil and refrigerant sample shall be taken in case analysis is
required prior to re-use of recovered refrigerant. It is essential that electrical power is
available before the task commences.
a. Become familiar with the equipment and its operation.
b. Isolate the system electrically.
c. Before attempting the procedure, ensure that:
i. Mechanical handling equipment is available, if required, for handling refrigerant
cylinders.
ii. All personal protective equipment is available and is being used correctly.
iii. The recovery process is supervised at all times by a competent person.
iv. Recovery equipment and cylinders conform to the appropriate standards.
d. Pump down the refrigerant system, if possible.
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e. If a vacuum is not possible, make a manifold so that refrigerant can be removed from
various parts of the system.
f. Make sure that the cylinder is situated on the scales before recovery takes place.
g. Start the recovery machine and operate in accordance with instructions.
h. Do not overfill cylinders (no more than 80% volume liquid charge).
i. Do not exceed the maximum working pressure of the cylinder, even temporarily.
j. When the cylinders have been filled correctly and the process completed, make sure
that the cylinders and the equipment are removed from the site properly and all isolation
valves on the equipment are closed off.
k. Recovered refrigerant shall not be charged into another refrigerating system unless it
has been cleaned and checked.
12. Labeling: Equipment shall be labeled stating that it has been de-commissioned and
emptied of refrigerant. The label shall be dated and signed. For appliances containing
flammable refrigerants, ensure that there are labels on the equipment stating the
equipment contains flammable refrigerant.
13.Recovery: When removing the refrigerant from a system, either for servicing or
decommissioning, it is recommended good practice that all refrigerants are removed
safely.
When transferring refrigerant into cylinders, ensure that only appropriate refrigerant
recovery cylinders are employed. Ensure that the correct number of cylinders for
holding the total system charge is available. All cylinders to be used are designated for
the recovered refrigerant and labeled for that refrigerant (i.e., special cylinders for the
recovery of refrigerant). Cylinders shall be complete with pressure-relief valve and
associated shut-off valve in good working order. Empty recovery cylinders are
evacuated and, if possible, cooled before recovery occurs.
The recovery equipment shall be in good working order with a set of instructions
concerning the equipment that is at hand and shall be suitable for the recovery of all
appropriate refrigerants including, when applicable, FLAMMABLE REFRIGERANTS. In
addition, a set of calibrated weighing scales shall be available and in good working
order. Hoses shall be complete with leak-free disconnect coupling and in good
condition. Before using the recovery machine, check that it is in satisfactory working
order, has been properly maintained and that any associated electrical components are
sealed to prevent ignition in the event of refrigerant release. Consult manufacturer if in
doubt.
The recovered refrigerant shall be returned to the refrigerant supplier in the correct
recovery cylinder, and the relevant waste transfer note arranged. Do not mix
refrigerants in recovery units and especially not in cylinders.
If compressors or compressor oils are to be removed, ensure that they have been
evacuated to an acceptable level to make certain that FLAMMABLE REFRIGERANT
does not remain within the lubricant. The evacuation process shall be carried out prior
to returning the compressor to the suppliers. Only electric heating to the compressor
body shall be employed to accelerate this process. When oil is drained from a system, it
shall be carried out safely.
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PRE-INSTALLATION PROCEDURES
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.
INSTALLATION INSTRUCTIONS
IMPORTANT: Read this Section of this manual located on page 5.
“REFRIGERATION WARNING &INSTALLATION-REPAIR-DECOMMISSIONING”
All refrigeration and electrical work must be performed by certified technicians.
The installation of the appliance and the refrigerant must only be performed by Federals
approved Service or suitably qualified person.
Appliance to be installed in accordance with safety standards ANSI/ASHREA 15.
The appliance shall not be installed in public corridors or lobbies.
This case is designed for a class 2 environment.
Test room
climate
class
Dry bulb
temperature
[°F]
Relative
Humidity
[%] Dew point [°F]
Water vapour
mass in dry air
[lbm
water/lbm air]
Required
Test Lab
Temperature
[°F]
2.0 71.6 65 59.36 0.0108 89.6
NSF TYPE 1 Temperature cannot exceed 75 deg F and 55% humidity.
LOCATING THE DISPLAY CASE
The case 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.
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Clearances
This case has a top mounted condensing unit and requires air movement above the case. The case
must be operated in a room with a minimum of 8’ ceilings. This allows a minimum of 18” from
top of case to ceiling, which allows the warm air to dissipate.
If this case is to be located against a wall there should be at least 6” between the case and the
wall to allow air circulation from condensate pan. Failure to give adequate space may cause base
area to form condensation.
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.
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REMOVING CASE FROM SHIPPING SKID
There are (2) 1/4” screws located in the front base rail and (2) ¼ screws in the rear base rail that
secure the case to the skid during shipping. The rear base panel and front kick plate will need to
be removed to gain access to these screws.
Remove the rear base panel by removing the (4) screws holding it to the back of the case. Use a
1/2 socket to remove the (2) skid mounting screws located in back base rail.
Remove the front kick plate by removing the (3) screws along the top of the kick panel. Tilt the
top of the kick panel away from the base. The bottom of kick panel is setting on top of the base
rail and will drop down and out of case
Use a 1/2 socket to remove the (2) skid mounting screws located in front base rail.
REAR BASE PANEL FRONT KICK PLATE
FRONT KICK PANEL
(3) FRONT KICK
PANEL SCREWS
(4) REAR BASE
PANEL SCREWS
REAR BASE PANEL
(2) SKID MOUNTING
SCREWS LOCATION
(2) SKID MOUNTING
SCREWS LOCATION
Remove the case from the skid and place on floor as described in “Lifting Case” section of this
manual. Reinstall both the rear panel and the front kick plate. Note: This case has casters
installed at factory to allow case to be moved to final location.
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LIFTING CASE
REAR FORK
LIFT AREA
REAR FORK
LIFT AREA
CONDENSATE
DRAIN
11
8
18
20.4
7
REAR FORK
LIFT AREA
CONDENSATE DRAIN
CONDENSATE PAN
CONDENSATE FAN
ELECTRICAL BOX
3
5 5
7
7
11.5
.80
CASTER
CLEARANCE
FLOOR LOCK
6.6
The case should be lifted off skid using a fork lift. The case must be lifted from the rear in the
locations 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 drain tube, condensate
fan or condensate heater wires.
To prevent injury, it is not recommended to attempt lifting case manually. If lifting or jacking is
required, remove rear base panel and front kick panel and grab under front and back lip of case
tub.
CAUTION: Care must be taken not to damage or tip the case when removing it from
the skid.
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MOVING CASE
Before moving the case, it is important to hook the power cord up off floor to prevent running
over the cord with the case. There is a cord hook strap provided on upper back of case. Loop
cord over hook to prevent it from dragging.
CORD HOOK
Casters are supplied from the Factory to allow the case to be moved to different locations. The
case should roll easily over level surfaces by lightly pushing on back, sides of end panels. There
is a condensate pan in the bottom section of the case that may have water in it. Push case slowly
to prevent water from sloshing out of pan on to floor. If there is water on the floor after moving
case, wipe it up immediately to prevent slipping. NOTE: There is only 5/8” ground clearance
under case, so be aware of any high spots and door sills that could cause case to bottom out.
When pushing over uneven surfaces it is very important to push slowly over bump and push
below the end glass near the base of the unit.
LEVELING THE CASE
The case must be level to allow for proper drainage of condensate water from evaporator coil.
It is important that the area the case is to be located is flat and level because there are no
leveling feet to compensate for uneven surfaces.
FLOOR LOCKS
This case is supplied with factory installed floor locks on back of
case to help prevent case to remain stationary.
-To lock floor lock: Step down on the top of the rubber foot to
push
foot on to floor surface.
-To unlock floor lock: Step down on lever next to rubber foot and
the foot will spring back to up position.
STEP DOWN
TO LOCK
STEP DOWN
TO UNLOCK
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GENERAL ELECTRICAL & GROUNDING
IMPORTANT: Read this Section of this manual located on page 5.
“REFRIGERATION WARNING &INSTALLATION-REPAIR-DECOMMISSIONING”
All refrigeration and electrical work must be performed by certified technicians.
DANGER: Improper or faulty hookup of electrical components in the
display case can result in severe injury or death.
POWER CORD
MODEL VOLTAGE TOTAL AMPS CORD STYLE
LMD4878SC 208-240/60/1 15
20AMP
NEMA 6-20
CORD CONNECTED
SELF CONTAINED
A factory installed 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 factory installed and is protruding from the rear corner of the case as noted in below
drawings.
-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".
POWER CORD
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PANEL REMOVAL FOR ELECTRICAL ACCESS
Electrical Component Cover Rear Base Panel
POWER SUPPLY
ELECTRICAL BOX
REAR BASE PANEL
CONDENSATE
DRAIN
POWER SUPPLY
ELECTRONIC
CONTROL
CLEAN
CONDENSER TIMER
LIGHT
SWITCH
CONDENSATE FAN
CONDENSATE PAN
ELECTRICAL
COMPONENT
COVER
LED CLEAN
CONDENSER
8-32 SCREW
8-32 SCREW
Electrical Component Cover
The electrical component cover can be removed to access lighting components and controls.
Remove the front 8-32 screws holding the electrical component cover to front of case.
Slide the cover down and out through the front of case opening.
Rear Base Panel
The rear base panel can be removed to access the main electrical box and condo pan
components. Remove the rear base panel by removing the (4) 8-32 screws holding it to the back
of case.
DANGER: Electric shock hazard. Disconnect power before removing panels. Do not
operate unit with panels removed. Panels must be in place when operating
unit
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REFRIGERATION
CHARGE AND SETTINGS
WITH ELECTRONIC CONTROL
LMDM4878SC
Refrigerant
R290
Low Pressure Switch Cut In
15
psi
Low Pressure Switch Cut Out
4
psi
High Pressure Switch Cut Out
350
psi
SELF-CONTAINED REFRIGERATION OPERATION
The unit temperature is controlled by an electronic control that senses air temperature and turns
refrigeration on and off as required to maintain proper temperature.
The electronic control will also sense a frosted coil that requires a defrost cycle and shuts off
refrigeration until defrost is complete. There are also a defined number of scheduled defrosts that
also shut the refrigeration off to insure a full defrost.
CONDENSATE EVAPORATOR PAN
IMPORTANT: Read this Section of this manual located on page 5.
“REFRIGERATION WARNING &INSTALLATION-REPAIR-DECOMMISSIONING”
All refrigeration and electrical work must be performed by certified technicians.
NOTICE: During normal defrost cycles, steam from the condensate
evaporator may be visible around the case.
Do not use other means to defrost coil other than recommended by manufacturing
The standard Self-Contained case is furnished with an electric condensate evaporator. Plumbing
connections are not required.
Make sure that the drain line has not been dislodged during shipment and that the drain trap
terminates properly over the water reservoir.
Water may slosh out when case is being moved. Wipe up water on floor immediately to prevent
slipping.
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BASE COMPONENT LAYOUT
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FEATURE OPERATION
NIGHT CURTAIN OPERATION
The Night Curtain is standard on all LMDM models. It is provided to conserve energy when case
is not being used.
NOTE: To prevent sweating the Night Curtain must be closed before rolling down the optional
Roll Down Cover or Installing the optional Security Cover.
NIGHT CURTAIN
HANDLE
NIGHT CURTAIN
NIGHT CURTAIN
HOOK
TOP VALANCE
CLEAR AIR
DEFLECTOR
NIGHT CURTAIN
HANDLE
NIGHT CURTAIN
MAGNET
CLEAR AIR
DEFLECTOR
NIGHT CURTAIN
HANDLE
CLOSING:
There are magnets along the back side of night curtain handle that are used to hold the
curtain open and hold the curtain closed. Some model configurations must use a hook at the
bottom to hold the curtain in the closed position.
1. Grab Night Curtain Handle located behind the top valance. Pull the night curtain
out away from the case to disengage magnets. Pull the night curtain down the
front of case opening.
2. MAGNET MODELS: Roll the handle forward so the magnets catch on metal lip
behind the clear air deflector.
HOOK MODELS: Using the tips of your fingers attach the handle to the Night
Curtain Hook located behind clear air deflector.
OPENING:
1. Detach the Night Curtain from the bottom of case by either unhooking the handle
or pulling the magnet free from metal lip.
2. While holding the Night Curtain Handle allow the night curtain to roll up slowly.
Important: Do not let go of Night Curtain Handle until Night Curtain is
completely open.
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REMOVABLE SECURITY COVER OPERATION (OPTIONAL)
Security Cover allows product to remain in case while case is unattended. It must be removed
and stored in different location while case is in use.
NOTE: When using optional Security Cover the Night Curtain must be pulled down to the
closed position. See Night Curtain Section.
SECURITY
COVER RETAINER
SECURITY COVER
SECURITY COVER
LATCH
SECURITY
HANDLES
SECURITY COVER
CATCH
Removing
1. Use key provided to unlock Security Cover Latch.
2. Turn Security Cover Latch vertical to unhook it from Security Cover Catch.
3. Grab Security Cover Handles, tilt top of Security Cover away from case, and lift
Security Cover up so the Security Cover bottom corners lift out of the Security
Cover Retainers located in the bottom corners of case opening.
Installing
1. Close Night Curtain as described in Night Curtain section.
IMPORTANT: Night Curtain must be closed or condensation will form on
front of Security Cover.
2. Grab Security Cover Handles and place bottom of Security Cover corner behind
the Security Cover Retainers, located in the bottom corners of case opening.
3. Tilt top of Security Cover into case opening until it hits the Security Cover
Catch.
4. Use key provided to lock Latch in horizontal position.
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ROLL COVER OPERATION (OPTIONAL)
The Roll Down Cover rolls down over product to allow product to remain in case while case is
unattended and it rolls up out of the way while case is in use.
NOTE: When using optional Roll Cover the Night Curtain must be pulled down to the
closed position. See Night Curtain Section.
ROLL COVER
CASE OPENING SILL
ROLL COVER HANDLE
ROLL COVER KEY
ROLL COVER BUMPER
CLEAR AIR
DEFLECTOR
TOP VALANCE
Rolling Down
1. Close Night Curtain as described in Night Curtain section.
IMPORTANT: Night Curtain must be closed or condensation will form on
front of Roll Down Cover.
2. Grab Roll Cover Handle and pull cover down until it stops on the Case Opening
Sill of case opening. The Roll Cover will be in front of the Clear Air Deflector.
3. Use the provided Roll Cover Key to lock the Roll Cover Latch in the
down position.
Rolling Up
1. Use the Roll Cover Key provided to unlock the Roll Cover Latch.
2. Grab and pull up on the Roll Cover Handle. The Roll Cover has a spring assist to
make it easy to open. Hold onto Roll Cover Handle until the Roll Cover
Bumpers hit the Top Valance of case.
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REAR DOOR (OPTIONAL)
IMPORTANT: Do not leave either the inner or outer doors open. Both inner
and outer doors must always be closed during operation. Only open the doors
for a short time to load case and then close both the inner and outer doors
immediately.
1. LIFT UP
2 SWING BOTTOM
INSIDE LOWER
TRACK
OUTSIDE INNER
DOOR
OUTSIDE LOWER
TRACK
OUTSIDE UPPER
TRACK
INSIDE UPPER
TRACK
CLEAR INSIDE
OUTER DOOR
CLEAR INSIDE
INNER DOOR
OUTSIDE OUTER
DOOR
1. Start with the Outside Outer Door and lift the door upward until the bottom edge
of door clears the Outside Lower Track. Swing the bottom of the door outward
and down out of Outside Upper Track.
2. Remove the Outside Inner Door using the same procedure.
3. Remove the Clear Inside Outer Door by lifting the door upward until the bottom
edge of door clears the Inside Lower Track. Swing the bottom of the door
outward and down out of Inside Upper Track.
4. Remove the Clear Inside Inner Door using the same procedure.
5. Reverse this procedure for door reinstallation starting with the Clear Inner Inside
Door followed by the Clear Inner Outside Door. Note: The row of vertical slots
must be at the bottom of the door as shown in the above picture. Check that the
doors slide freely.
6. Reinstallation the outside doors starting with the Outside Inner Door followed by
the Outside Outer Door.
Note: None of the doors are interchangeable and they must be replaced in the same
location that they were removed from.
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SHELVING
The LMDM has 1 tiers of solid metal shelves as standard.
Some cases may be provided with additional optional shelves. These shelves may be
different depth than the standard shelf. If the shelves have different depths the deepest shelf
goes on the bottom and shallowest goes on the top.
The shelf or shelves can be adjusted up or down to suit product needs. They can also be
placed in a flat position or tilted at 10deg angle. To adjust shelf 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.
The shelf light is attached to the front underside of the shelf. The shelf light will need to be
unplugged from the back upright of case before moving shelf. Once shelf is moved the light
can be plugged into any of the (3) receptacles located on back upright. See LED Shelf and
Top Lights section of this manual for more information.
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
v
TILT POSITION. AS SHOWN.
TOP SHELF TABS
SLOTS IN SHELF
STANDARDS
SHELF
SHELF SHOWN IN FLAT STRAIGHT POSITION
SHELF SHOWN IN 10
v
TILT POSITION
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LED LIGHTS
1. The shelf light(s) are attached to the front underside of the shelf and the top light is in front
of the air discharge diffuser. They are held in place with double sided adhesive. If light must
be replaced the old adhesive must be removed with adhesive remover and new adhesive must
be used with new Led light.
2. The round barrel connector on shelf light cords are plugged in to the end of the LED light
strips. Align the straight male barrel connector on cord with the round receptacle hole in the
end of the LED light strip and push firmly into place.
LED LIGHT STRIP
SHELF
SHELF LIGHT CORD
SHELF LIGHT
CORD BARREL
CONNECTOR
3. Remove the cap from the appropriate female light receptacle located on back wall of case
and plug the 90-degree end of light cord into the receptacle. There is a flat on the plug and
the receptacle so it can only be plugged in at correct position.
NOTE: 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. Hook any extra cord into notch on end of shelf support and notch on back flange of shelf to
keep it out of the way as shown.
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OPERATING INSTRUCTIONS
CONTROL
POWER
SWITCH
LIGHT SWITCH
CLEAN CONDENSER
FILTER LIGHT
CONTROL DESCRIPTION
Controls are located in the upper left side of case above the display case opening.
Power Switch
The unit has a power switch that turns off power to the entire unit, including the condenser unit
and the lights.
Electronic Temperature Control
The electronic temperature control allows the user to adjust the temperature of the display merchandiser
to their needs.
Light Switch
The unit has a light switch that turns on and off the interior lights of unit.
Clean Condenser Filter Light
LED Light flashes when Condenser coil needs cleaning. See “Cleaning Condenser Filter” section of this
manual
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SETTING ELECTRONIC TEMPERATURE CONTROL
Button Overview
Power on/off: Press and hold to turn system on or off.
Set: Press and hold to enter the set point adjustment
menu.
Defrost: Press and hold to initiate a manual defrost.
Up: Change set points when in set point adjustment
menu. When not in set point menu, shows maximum
temperature of the display probe.
Down: Change set points when in set point adjustment
menu. When not in set point menu, it shows minimum
temperature of the display probe.
Display indication symbols
On Compressor on
Flashing
Minimum compressor off time in progress
On Unit in defrost mode
Flashing
Defrost delay
On Condenser fan running
Flashing
Minimum condenser fan off time in progress
On Alarm occurring. See the error code section below.
On Indicates temperature unit of measure.
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Powering on control
To turn refrigeration control power on, press and hold “ ” for approx. three seconds.
When the control power turns on, the display will read the cabinet probe temperature.
The compressor and condenser fan run indicators ( & ) will illuminate on the display,
meaning that the compressor and condenser fan are 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. three
seconds. When the control powers off the display will read “OFF”. 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.
Adjusting the set point
The set point is what determines how cold the display case will hold food and beverage.
To adjust the set point press the “ ” button. Then press “ ” button to increase the set
point number (colder) or press the “ ” button to decrease the set point number
(warmer). There are nine (9) available set points numbers, the higher the number of the
set point, 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. The control cutout temperature for the
selected setpoint will briefly be displayed if the setpoint is changed.
Entering manual defrost mode
The control is programmed to automatically initiate a defrost by two different methods,
involving time and temperature, as outlined in the “Defrost Cycle” section (Pg.) of
“ELECTRONIC CONTROL PARAMETERS AND EXPLANATION OF OPERATION.”
While it is uncommon that the automatic defrost cycles would insufficiently defrost the
case, a Manual Defrost mode is available if this situation arises.
Note: The control will not allow the initiation of a manual defrost within 30 minutes of
completion of another defrost cycle, manual or automatic.
To initiate the manual defrost press and hold the “ ” button approx. three seconds. The
defrost is initiated when the defrost mode indicator illuminates on the display. The
control display will then return to reading the probe temperature. When the defrost
mode indicator turns off the defrost is complete and the compressor will turn on
automatically and the compressor and condenser fan indicator will be shown ( & ).
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. An error
code or codes will flash intermittently on the display. If there are multiple codes, the
display will continuously cycle through them.
Mute: You may mute the alarm by pressing any button. The red alarm symbol 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.
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Display
Description Cause Resolution
“P1”
Air discharge
temperature
probe failure
Probe signal
is interrupted
or short-
circuited
Check to ensure probe wires and quick disconnect are
secure in control.
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).
Ensure that probes are wired per the wiring diagram
provided. Replace probe if other remedies fail, or if
probe resistance deviates from “Table 3” below.
“P2”
Defrost
temperature
probe failure
TEMPERATURE PROBE COMMON RESISTANCE CHART
Probe Temp
Maximum
Resistance [kΩ]
Normal
Resistance [kΩ]
Minimum
Resistance [kΩ]
32°F(0°C) 27.83 27.28 26.74
77°F(25°C) 10.1 10 9.9
212°F(100°C) 1 0.97 0.94
Electronic Control Operation
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 inner ceiling behind the
honeycomb air discharge. 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.
Defrost Cycle
The control is programmed to initiate defrost via two different methods. There are 4
programmed defrost cycles in the case which will initiate a defrost cycle every 8.6 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 defrost probe and the control probe is high. Once
initiated the defrost cycle will terminate automatically based on the defrost probe temp.
If a manual defrost is required, one can be initiated by pressing and holding down the
defrost mode button for three (3) seconds. This is typically unnecessary and should only
be performed if special circumstances require it.
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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 control. 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 150 pounds of weight per shelf and 275 pounds on deck.
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°F 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.
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MAINTENANCE
IMPORTANT: Read this Section of this manual located on page 5.
“REFRIGERATION WARNING &INSTALLATION-REPAIR-DECOMMISSIONING”
All refrigeration and electrical work must be performed by certified technicians.
CLEANING CONDENSER FILTER
FLIP LATCH
FILTER DOOR
FILTER
TOP TRACK
BOTTOM TRACK
FILTER TAB
FILTER DOOR HINGE
This refrigerated case is equipped with a reusable condenser coil filter. It is important that
this filter be cleaned monthly to maintain proper refrigeration performance and prevent
compressor failure. There is a flashing LED indicator on control panel that will flash if
the filter is not cleaned at 45day intervals. FAILURE TO CLEAN THE CONDENSER
FILTER WILL VOID THE COMPRESSOR WARRANTY.
1. Locate condenser air Filter Door on the back upper Condenser Cover Panel. Open the
filter door by flipping the Flip Latch lever up and hinging the Filter Door down.
2. Grab the Filter Tab on the side of the Filter and slide Filter out of opening in panel.
3. Wash the Filter using warm soapy water. Rinse the filter and let it dry.
NOTE: Do not clean the filter in a dishwasher.
4. Apply a generous coat of filter adhesive to both sides of the Filter. Recommended
filter adhesive is Federal Ind. PN 22-21164 available from Partstown. The filter is
pre-coated from the factory with this product.
NOTE: Failure to coat the filter with a fresh coat of filter adhesive after cleaning
will cause ineffective filter operation. This will lead to plugging of the condenser
coil, affecting refrigeration performance and can cause compressor failure
5. Reinstall the Filter by sliding it back into the opening in panel. Be sure filter is in the
Top and Bottom Track guides.
6. Close the hinged Filter Door up so the Flip Latch is in the top hole on the Condenser
Cover. Flip the Flip Latch lever down to secure Filter Door in the closed position.
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IMPORTANT: It is also necessary to check and clean the front of the condenser coil
every 6 months or as necessary. Refer to the instructions outlined in Condenser
Cleaning section of this manual.
CLEANING THE CONDENSER FILTER
CONDENSER COIL FACE
FILTER
CONDENSER
COVER
(3) CONDENSER COVER
#10 SCREWS
PANEL HOOK
TRIM EDGE
FOR PANEL HOOK
NOTICE: Despite the presence of the filter, it is also necessary to clean
the face of condenser coil every 6 months to insure proper
refrigeration performance and prevent compressor failure.
FAILURE TO CLEAN CONDENSER COIL WILL VOID
COMPRESSOR WARRANTY.
1. Remove the Condenser Cover located on the upper back section of the case by
removing the (3) #10 screws. Lift the Condenser Cover up until the Panel Hook clears
the Trim Edge on each side of case.
2. Remove the Filter by sliding it out of tracks and clean it as outlined in Cleaning
Condenser Filter section.
3. Vacuum the Condenser Coil Face, moving the vacuum nozzle vertically. NOTE: Be
careful not to bend or otherwise damage the condenser coil fins. Moving the
vacuum nozzle horizontally will cause the fins to bend. Bent coil fins will affect
condensing unit performance.
4. Reinstall the Filter.
5. Reinstall the Condenser Cover by hooking Panel Hook over Trim Edge and installing
the (3) #10 screws. (Do not over tighten screws)
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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 a rag in warm soapy water and ring it out thoroughly. Wipe the 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.
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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.
SHELF
DISPLAY DECK PAN
GRILLE AIR
RETURN
ACRYLIC AIR
DEFLECTOR
SLOTTED BACK PANEL
DISPLAY DECK
PAN LIFTING HOLES
GRILL AIR RETURN
BRACKETS
SLOTTED BACK PANEL
LIFTING HOLES
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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. On cases supplied with optional rear door remove the outer and inner rear doors as
described in “Rear Door” section of this manual. Clean both outer and inner door tracks
with soapy warm water.
3. Remove interior Shelf and Shelf Lights from unit as described in the “LED Lights”
section of this manual.
4. Remove the Front Air Return Grille (and the Rear Air Discharge Grille on cases with
rear door option). Remove grilles by lifting on the flanges located at each end of grille.
5. Remove the Display Deck Pan from the unit by grabbing the lifting holes located on
front lip of Display Deck Pan and lifting it up and out of unit.
6. Remove the Slotted Back Panel from unit by lifting it up until the bottom of panel clears
the evaporator cover and remove from case. Be careful not to hit the side panels or top
light housing.
7. Dip a rag in warm soapy water and ring out thoroughly. Clean all shelves, Display
Deck(s), Grill Air Return and Slotted Back Panel. Dry all items with soft dry towel.
8. 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)
EVAPORATOR FAN
HOUSING (HINGED)
EVAPORATOR FAN
HOUSING LATCH
ONE ON EACH END
FRONT
CATCH PAN
EVAPORATOR FAN
HOUSING
FRONT AIR
RETURN GRILL
AIR DEFLECTOR
DISPLAY PAN
REAR CATCH PAN
(REAR DOOR OPTION)
REAR AIR
DISCHARGE GRILL
(REAR DOOR OPT ONLY)
REAR DOOR
OPTION
9. Clean under the Evaporator Fan Housing and Drain area by lifting the (2) Evaporator
Fan Housing latch levers up and swinging the hinged Evaporator Fan Housing up and
out of the way.
10. Clean the Front Catch Pan and rear catch pan on rear door models.
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RETAINER
THUMB SCREW
AIR DIFFUSER
RETAINER
THUMB SCREW
AIR DIFFUSER
11. 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.
12. Clean honey comb air diffuser with warm soapy water and a brush. Rinse thoroughly
and allow to dry.
13. 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.
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CATCH PAN CLEANING
This case is provided with a Front Catch Pan on all cases and an additional Rear
Catch Pan for cases with rear door option. The Catch Pans are provided to
catch milk when a carton breaks open while inside of case.
If a spill is observed these Catch Pans must be cleaned immediately. The
volume of milk they hold is minimal and if any milk overflows catch tray it will
run over into heated condensate pan. This will cause milk to sour and smell.
FRONT
CATCH PAN
FRONT AIR
RETURN GRILL
DISPLAY PAN
REAR CATCH PAN
(REAR DOOR OPTION)
REAR AIR
DISCHARGE GRILL
(REAR DOOR OPT ONLY)
REAR DOOR
OPTION
1. Remove the Front Air Return Grille and the Rear Air Discharge Grille on cases with rear
door option. Remove grilles by lifting up on the flanges located at each end of grille.
2. Remove the Display Deck Pan from unit by grabbing the lifting holes located on front
lip of Display Deck Pan and lifting it up and out of unit.
3. Soak up spilled milk from catch pan with a sponge and do a final clean with warm soapy
water and a fresh rag.
4 Wash the Grilles and Display Deck Pan with warm soapy water and
reassemble components in reverse order.
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SERVICE INFORMATION
Before any service work
is performed on the
case, make sure all
power is disconnected
to the case.
IMPORTANT: Read this Section of this manual located on page 5.
“REFRIGERATION WARNING &INSTALLATION-REPAIR-DECOMMISSIONING”
All refrigeration and electrical work must be performed by certified technicians.
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
- Phone: 833-809-8188
CAUTION
RISK OF ELECTRIC SHOCK
DISCONNECT POWER BEFORE
SERVICING UNIT
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Special Service Situations
IMPORTANT: Read this Section of this manual located on page 5.
“REFRIGERATION WARNING &INSTALLATION-REPAIR-DECOMMISSIONING”
All refrigeration and electrical work must be performed by certified technicians.
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
hydrofluoro olefin (HFOC’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.
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 back wall
of case.
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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.
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SALE & DISPOSAL
IMPORTANT: Read this Section of this manual located on page 5.
“REFRIGERATION WARNING &INSTALLATION-REPAIR-DECOMMISSIONING”
All refrigeration and electrical work must be performed by certified technicians.
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 HFO’s from being released into the
atmosphere.
Refrigerant Recovery/Recycling/Disposal
When recycling or discarding case, refrigerants MUST BE handled according to local,
state and federal codes, requirements and regulations.
If disposing of a refrigerated case that uses ozone depleting chemicals in its refrigeration
system, make sure the refrigerant is removed by a qualified service technician and
properly disposed of.
If you intentionally release refrigerant into the atmosphere, you may be subject to fines or
other penalties (under regulation mandated by environmental regulators and/or legislative
edict.)
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PARTS LIST
ELECTRICAL COMPONENTS
QTY
PART#
CONTROL, TEMP, DIXEL 230V
1
32-21342-32
TEMPERATURE PROBE
2
32-19866
SWITCH,ROCKER LIGHT22A
1
41-11066
SWITCH,ROCKER POWER 22A
1
41-18186
RECEPTACLE,WHITE
3
43-19080-A
PLATE,RECEPT SHELF LIGHT WH
3
M-10167-2A
POWER SUPPLY 24V 60W
1
39-20986
LED,24V 35k
2
42-20871-42C35
CORD,SHELF LED WH
1
43-20862-6W
CORD,TOP LED WH
1
43-20868-3W
HARNESS,5 LIGHT
1
43-20147
TIMER,DIRTY COND
1
41-20988
SWITCH,MAGNET DIRTY COND
1
41-20991
LED,DIRTY COND YELLOW
1
40-20992
REFRIGERATION
MOTOR, EVAP FAN 1600
2
41-21237-16
HARNESSWIRE,DOUBLE FAN
1
43-21501
TXV,BBIOE-1/2-C
1
32-21750
COIL,EVAP MULTI DECK
1
33-21288-22
CONDENSING UNIT
1
30-21766
COMPRESSOR
1
30-21766-COMP
CONDONSATE PAN ASSY
1
SA5965
CONDENSATE HEATER 600W 230V
2
40-19392
CONDENSATE FAN 24V
1
41-20955
SWELL LATCH FAN HOUSING
2
66-13640
HINGE,PLASTIC FAN HOUSING
3
66-14094
MISC COMPONENTS
PANEL,END (X =COLOR REQD)
2
SA5958-XL
PANEL,END (X =COLOR REQD)
2
SA5958-XR
PANEL,END GLASS
2
50-21177
PANEL,END GLASS REFLECTIVE
1
50-21177-1
PANEL,LAMINATE FRONT (COLOR REQD)
1
W11723-1
PANEL,END LAM (X =COLOR REQD)
1
68-21165-XL
PANEL,END LAM (X =COLOR REQD)
1
68-21165-XR
LEG LEVELER,1/2-13 X 2.5
4
65-11486
CASTER RECESSED,2-1/2"
4
65-17352
AIR DIFFUSER
2
W11724-1
THERMOPLASTIC DRAIN
1
84-70225
DRAIN ASSY,TUBE
1
SA5966
SHELF,ASSY 17" (X =COLOR REQD)
5
SA5979-5X
DEFLECTOR,AIR FRONT
1
15-20030-1
NIGHT CURTAIN
1
65-19464
SECURITY COVER (OPTIONAL) (COVER ONLY)
1
SA5980-1
DECAL,CATION ELECTRICAL SHOCK
2
91-12340
LOGO,FEDERAL
1
91-72523
REAR DOORS (OPTIONAL)
DOOR OUTER, OUTSIDE (CLEAR/GRAY)
1
53-21169-1
DOOR OUTER, INSIDE (CLEAR/GRAY)
1
53-21170-1
DOOR OUTER, OUTSIDE (REFL/GRAY)
1
53-21169-1A
DOOR OUTER, INSIDE (REFL/GRAY)
1
53-21170-1A
DOOR TRACK OUTER ASSY (GRAY)
2
57-21168-1
DOOR INNER (CLEAR PLASTIC)
2
53-21170-1
DOOR INNER HANDLE
2
M21180
DOOR TRACK INNER BOTTOM (ALUM)
2
M16477-5
DOOR TRACK INNER TOP (ALUM)
2
M16476-5
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WIRING DIAGRAMS
LMDM48
LMDM E3924-20
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REV
CHANGE RECORD
APP’D
DATE
ECN#
-
RELEASED
ADC 2/21/25 3938
California Residents Only.
WARNING
This product can expose you to chemicals including chromium which is known to the State of
California to cause cancer and birth defects or other reproductive harm. For more information
go to www.P65Warnings.ca.gov
