FUSION REFRIGERATED SELF-SERVICE MEDIUM VOLUME MERCHANDISERS*
REV N: 05/18/2023
USER MANUALS\20-18548_FUSION_USER MANUAL_GMSS_GMSSEH_GMSSV_REF_SELF-SVC_MED-VOL_CASE
Please Note:
1. Your specific model number is located on the serial label. Serial labels are affixed at a wide range of
places (on the header, near thermostat, at case rear, behind panels/toe-kicks, on electrical boxes, etc.).
2. See SERIAL LABEL INFORMATION & LOCATION in this User Manual for sample serial label.
3. Cases shown in this User Manual may differ from models chosen with different features or options.
Model GMSS1252R
Model GMSSEH852R
Model GMSS352R.8110**
Model GMSS852R With Optional
Metal Security Grid
*For a list of models represented by this User
Manual, see page 2. **Details of Model
GMSS352R.8110’s unique shelving, product
dispensers & product stops are on page 10.
SCC P/N
20-18548
USER
MANUAL
FUSION
CAREFULLY FOLLOW THESE INSTRUCTIONS
Structural Concepts Corp. ∙ 888 E. Porter Rd ∙ Muskegon, MI 49441 Phone: 231.798.8888 Fax: 231.798.4960 ∙ www.structuralconcepts.com
2
TABLE OF CONTENTS
OVERVIEW / CONDITION TYPE / COMPLIANCE / WARNINGS / PRECAUTIONS / WIRING .......….
INSTALLATION: SKID REMOVAL, POSITIONING AND LEVELING CASE ………………….....……..
INSTALLATION, CONTINUED: BOLTING and CAULKING UNITS TOGETHER …………………..….
INSTALLATION, CONTINUED: FRAME SUPPORT RAIL SHIMMING ……………………………...…..
ELECTRICAL CONNECTIONS / FIELD WIRING BOX / LIGHT BALLASTS / TERMINAL STRIP ......
REFRIGERATION LINES / STUB-UPS / DRAINS …...……………………………………………………..
MODEL GMSS352R.8110 SHELVING SPECIFICS, PRODUCT DISPENSERS AND PRODUCT
STOPS …………………………………………………………………………………………………...
CONDENSER PACKAGE (SELF-CONTAINED UNITS ONLY): MODEL GMSS852R ...………………
CONDENSER PACKAGE (SELF-CONTAINED UNITS ONLY): MODEL GMSS352R.8110 ……….....
FIELD ACCESS BOX / ELECTRICAL COMPONENTS / PROGRAM. CONTROLLER, ETC. -
MODEL GMSSEH852R .………………………………………………………….….………...….……
FIELD ACCESS BOX / ELECTRICAL COMPONENTS / PROGRAM. CONTROLLER, ETC. -
MODEL GMSSEH1252R …………………………………………………………………….……….
FIELD ACCESS BOX / ELECTRICAL COMPONENTS / PROGRAM. CONTROLLER, ETC. -
MODEL GMSS852R …………………………………………………………………………………….
FIELD ACCESS BOX / ELECTRICAL COMPONENTS / PROGRAM. CONTROLLER, ETC. -
MODEL GMSS352R.8110 ……………………………………………………………………………...
START-UP AND OPERATION / THERMOMETER LOCATION AND FUNCTION ……………………..
MAINTENANCE FUNDAMENTALS, CONT’D: LED LIGHT FIXTURES ………………………………...
MAINTENANCE FUNDAMENTALS, CONT’D: EVAPORATOR FANS, REFRIGERATION LINES,
TXV & DRAIN ACCESS ……………………………………………………………………………….
MAINTENANCE FUNDAMENTALS, CONT’D: SHELF ASSEMBLY & UNDER CASE CLEANING ...
MAINTENANCE FUNDAMENTALS: HONEYCOMB AIR DIFFUSERS ………………………………….
CLEANING SCHEDULE TO BE PERFORMED BY STORE PERSONNEL (UNLESS SPECIFIED
OTHERWISE) ..…..…...…............................................................................................................
TROUBLESHOOTING - GENERAL ……………………………………..………………...…..………….….
TROUBLESHOOTING - CONDENSING SYSTEM ………………………………………………………….
TROUBLESHOOTING - EVAPORATOR SYSTEM …………………………………………………………
SERIAL LABEL INFORMATION & LOCATION …….……………………..………………….……...…….
PROGRAMMABLE CONTROLLER INFORMATION ..…………………………………………………….
TECHNICAL SERVICE CONTACT INFORMATION / WARRANTY INFORMATION ………………......
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5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22-23
24-25
26
27
28
29
30
The Following Models Are Represented By This Manual:
GMSS352R.8110, GMSS452R, GMSS552R, GMSS652R, GMSS852R, GMSS1052R, GMSSEH852R,
GMSS1052R, GMSS1252R, GMSSEH1252R, GMSSV452R GMSSV552R, GMSSV652R, and GMSSV852R.
Note: This manual may also be used for models not listed above.
3
OVERVIEW
• These Structural Concepts cases are designed to
merchandise packaged products at 41 °F (5 °C) or less
product temperatures (unless custom cases with wire
rack shelving).
• Product must be pre-chilled to 41 °F (5 °C) or less before
being placed in merchandiser.
• Cases should be installed and operated according to this
operating manual’s instructions to ensure proper
performance. Improper use will void warranty.
TYPE 1 vs. TYPE 2 CONDITIONS
This unit is designed for the display of products in ambient
store conditions where temperatures and humidity are
maintained within a specific range.
• Type 1 conditions: ambient conditions are to be 55%
max. humidity and 75 °F (24 °C) max. temperature.
• Type 2 conditions: ambient conditions are to be 55%
max. humidity and 80 °F (27 °C) max. temperature.
• If unsure if unit is Type 1 or 2, see tag next to serial label.
See SERIAL LABEL LOCATION & INFORMATION
LISTED / TECH INFO & SERVICE section in this manual
for sample serial labels).
COMPLIANCE
• Performance issues when in violation of applicable
NEC, federal, state and local electrical and plumbing
codes are not covered by warranty.
• See below compliance guideline.
WARNINGS
• This page contains important warnings to prevent injury or
death. Please read carefully!
PRECAUTIONS and WIRING DIAGRAMS
• See next page for PRECAUTIONS and WIRING
DIAGRAM information.
WARNING
Hazardous moving parts. Do not operate unit with covers removed.
Fan blades may be exposed when deck panel is removed.
Disconnect power before removing deck panel.
WARNING
Risk of electric shock. Disconnect power before servicing unit.
CAUTION! More than one source of electrical supply is
employed with units that have separate circuits.
Disconnect ALL ELECTRICAL SOURCES before servicing.
WARNING
ELECTRICAL
HAZARD
WARNING
KEEP
HANDS
CLEAR
COMPLIANCE
This equipment MUST be installed in compliance with
all applicable NEC, federal, state and local
electrical and plumbing codes.
OVERVIEW / TYPE / COMPLIANCE / WARNINGS / PRECAUTIONS / CORDS / WIRING - PAGE 1 of 2
WARNING
This product can expose you to chemicals, including
Urethane (Ethyl Carbamate), which are known to the state of
California to cause cancer and birth defects or other reproductive
harm. For more information go to P65Warnings.ca.gov.
WARNING
Condensate pan and overflow condensate pans are HOT!
Disconnect and allow to cool before cleaning or removing from case.
WARNING
HOT
SURFACE
PRECAUTIONS
• Following are important precautions to prevent damage
to unit or merchandise. Read carefully!
• See previous page for specifics on OVERVIEW,
CONDITION TYPE, COMPLIANCE and WARNINGS.
WIRING DIAGRAM
• Each case has its own wiring diagram folded and in its
own packet. It may be placed near ballast box, field
wiring box, raceway cover, or other related location.
REFRIGERANT DISCLOSURE STATEMENT
• This equipment is prohibited from use in California with
any refrigerants on the “List of Prohibited Substances” for
that specific end-use, in accordance with California Code
of Regulations, title 17, section 95374.
• This disclosure statement has been reviewed and
approved by Structural Concepts and Structural Concepts
attests, under penalty of perjury, that these statements
are true and accurate.
OVERVIEW / TYPE / COMPLIANCE / WARNINGS / PRECAUTIONS / CORDS / WIRING - PAGE 2 of 2
4
CAUTION! POWER CORD AND PLUG MAINTENANCE
Risk of electric shock. If cord or plug becomes damaged,
replace only with cord and plug of same type.
CAUTION! GFCI BREAKER REQUIREMENT
If N.E.C. (National Electric Code) or your local code
requires GFCI (Ground Fault Circuit Interrupter) protection,
you MUST use a GFCI breaker in lieu of a GFCI receptacle.
CAUTION! ADVERSE CONDITIONS / SPACING ISSUES
• Performance issues caused by adverse conditions are NOT warranted.
• To prevent damage to end panels due to condensation, apply industrial grade
silicone sealant and tightly join to opposite end panels. When not adjoining
cases, keep end panels at least 6” away from walls/structures. Rear panels
must also be kept at least 6” from walls and structures.
• Case must not be exposed to direct sunlight or any heat source.
• To maintain proper case temperature, keep case at least 15-feet from exterior
doors, overhead HVAC vents or any air curtain disruption.
• Self-contained case clearance: 6” min. air intake / 6” min. air discharge.
CAUTION
CAUTION! DO NOT RELY ON THERMOMETERS OR
THERMOSTATS FOR PRODUCT (FOOD) TEMPERATURES.
• Thermometers & thermostats reflect air temperatures ONLY.
• For ACTUAL product (food) temperatures, use a calibrated food
probe thermometers ONLY.
• For accurate readings, DO NOT use infrared food thermometers.
CAUTION! CHECK CONDENSATE PAN, ITS POSITION & PLUG!
Water on flooring can cause extensive damage!
• Before powering up case, check that condensate pan is positioned
directly under case’s condensate drain.
• Before powering up case, check that condensate pan’s electrical plug is
SECURELY connected to condensate system’s receptacle.
• If wicking material is used in condensate pan, check that it is secure.
5
INSTALLATION: SKID REMOVAL, POSITIONING AND LEVELING CASE
Note: Units shown may not depict an exact representation of your particular unit being installed.
A
B
3. Position and Level Units
• Move case into position. Or, if case has
casters, roll into position.
• Align multiple units carefully in areas A & B.
• See next page for bolting and caulking
instructions (for case adjoinment
purposes).
1. Remove From Skid (Rails or Levelers)
• Remove shipping brace that may be securing
case to skid.
• Support case to prevent tipping.
• Caution! Frame Support Rails (or levelers) can
be damaged if case hits floor with heavy force!
Note: Case can be repositioned with pallet truck
when front lower panel is removed. Blocking
may be necessary to obtain adequate height.
Slide Skid Out
• Carefully slide unit to
rear of skid and tip
backward off skid.
• Illustration may not
reflect every feature
or option of your
particular case.
2. Remove Case From Skid (Casters)
Remove shipping brackets that may be securing
casters to skid
• Place ramp up against skid (to allow case to
smoothly slide off from skid).
• Maintain support of case at all times or center
of gravity may cause case to fall.
• Unlock Casters. Roll unit to rear of skid.
Ramp
Roll down ramp
and off from skid.
Support
while
rolling
case
down
ramp.
Note: Illustrations
shown reflect a
general outline of
sample cases and do
not reflect features or
options of your
particular model.
6
INSTALLATION, CONTINUED: SEALING AND BOLTING UNITS TOGETHER
4. Sealing and Bolting Units Together
Follow these steps to assure a secure, level lineup.
A. Begin all lineup leveling from highest point of
floor.
B. After the ’first’ case is level, check that front and/
or rear doors smoothly open and close.
C. Apply a refrigeration bead of industrial grade
urethane adhesive on non-visible areas (at case
ends) as illustrated below.
D. Line up ‘second’ case bolt-hole to bolt-hole to
‘first’ case.
E. Using SCC-supplied bolts (found in installation
packet or inserted in holes); connection points are
shown with floating arrowheads below ( ). You
may need to remove decking, side covers, ‘perf’
panel, etc. to access certain holes. Insert bolts.
Deck
Approximate hole
locations pointed
at with arrows
( ) for bolting
units together.
Refrigeration Bead
Sanitation
Bead
Refrigeration
Bead
F. Caution! Front of cases MUST be flush with
each other! After leveling, all cases to be same
height.
G. Using SCC-supplied nuts & bolts, lightly tighten
each of the 5 to 8 bolts in a cross-wise pattern.
Work your way around the pattern, tightening
more firmly at each pass. Do not firmly tighten
one bolt and then start on the next!
H. After the cases are bolted together, level the
‘second’ case. Repeat this process for each
case to be adjoined.
I. After all lined-up cases are level, apply a
sanitation bead of industrial grade silicone
sealant (as shown below).
Sanitation Bead
Refrigeration
Bead
Urethane For
Refrigeration Bead
Silicone For
Sanitation Bead
Note: Illustration shown may not
exactly reflect every feature or
option of your particular case.
7
INSTALLATION, CONTINUED: FRAME SUPPORT RAIL SHIMMING
Note: Units shown may not depict an exact representation of your particular unit being installed.
1. Position & Align Case Alongside Other
Cases (See Previous Page For Instructions)
• Before adjusting levelers (or shimming frame
support rails), make certain that the case is in
proper position and, if required, aligned with
adjoining case(s).
• This may require the repositioning of the case
you are installing or the already positioned case.
Frame
Support Rails
2. Frame Support Rails Must Be Shimmed
• Illustration below shows case with frame
support rails.
• Shims will be provided with all cases that have
frame support rails.
• Use shims to level case.
• Note: After case is in position, it must be
sealed to floor to prevent entry or leakage of
liquid or moisture.
--- View of GMSS1252R Shown / Your Model May Vary ---
Note: Illustration shown may not
exactly reflect every feature or
option of your particular case.
8
ELECTRICAL CONNECTIONS / FIELD WIRING BOX / LIGHT BALLASTS / TERMINAL STRIP
1. Electrical Connections
• Field wiring hook-up / electrical access locations
are shown in illustrations below (though they may
not exactly reflect your particular unit).
• Single phase leads are provided.
• See Technical Information Sheet for more
information.
• Remote Units (Standard Cases): This case is
hard-wired. When power is supplied, case will
power-up.
(2) Hooks at
Each End of
Each Front
Panel
Terminal
Strip
Light
Ballasts
LED Driver Placement
(Optional, Dependent
Upon Lighting)
--- View of GMSS1252R With Front Panel and Electrical Cover Removed ---
2. Field Wiring Box / Light Ballasts / Optional
LED Driver Location / Terminal Strip
• Ballast (or optional LED driver) and terminal strip
is also located behind front electrical cover
(shown removed for illustrative purposes).
• Screws hold front electrical cover in place.
Unscrew and drop electrical cover down & out.
• Caution! Only certified electricians are to
access electrical components!
Note: Illustration shown may not
exactly reflect every feature or
option of your particular case.
Field Wiring
Hookup
(For Remote
Cases)
Field Wiring
Hookup
(For Remote
Cases)
9
REFRIGERATION LINES / STUB-UPS / DRAINS (REMOTE UNITS ONLY)
1. Refrigration Line Stub-Up Connections
• Refrigerant stub-up access is at underside of
case.
• Stub-up connections are accessed by removing
front or rear panel (no screws required).
• Run case-to-case connections through cutouts in
base.
• Sweat the high and low pressure connections.
• Fill access hole with suitable filler to insure
watertight integrity of tub.
• Note: Illustration below may not reflect every
feature or option of your particular case.
Refrigeration
Line Stub-Ups
Access
Field Connection
for Drain
Model GMSS1252R is Shown Above.
Your Case May Differ.
P-Trap
2. Drains
• Depending upon model, cases have drains at left
and right hand sides.
• Model shown below (GMSS1252R) has a single
drain (as shown below).
• Drain field connection is as shown below. See
MAINTENANCE FUNDAMENTALS - DRAIN /
SHUT-OFF VALVE / BALANCE VALVE
ACCESS section in this manual for illustration of
Balance Valve, Shut-Off Valve, Drain,
Refrigeration Line Stub-Ups Access, etc.
• Depending upon drain access needs, either front
or rear panel may be removed to gain access to
drain stub-up.
• 1.5” male PVC stub-up connection is under case.
• Connect tub drain to floor drain. Maintain
1/4”-fall per foot to provide proper drainage.
Drain
Note: Illustration shown may not
exactly reflect every feature or
option of your particular case.
10
MODEL GMSS352R.8110 SHELVING SPECIFICS, PRODUCT DISPENSERS AND PRODUCT STOPS
Model GMSS352R.8110 Shelving Specifics
• Illustration shown has end panel removed for
illustrative purposes only.
• Shelving is adjustable and removable from case
(for cleaning).
• Shelving has slots to secure product dispensers.
• Product dispensers are removable for cleaning.
Front Product
Dispenser
Sample
Product
Sample
Product
Product
Stop
Chimney Grille
View of Shelving
With Slots To Secure
Product Dispensers
(Rotated For Illustrative
Purposes Only)
Rear Product
Dispenser
11
CONDENSER PACKAGE (SELF-CONTAINED UNITS ONLY): MODEL GMSS852R
Condenser Package (Self-Contained Model GMSS852R)
• Illustration below shows rear grille removed; also condenser package is removed & rotated for viewing.
• Condenser package is accessible ONLY at case rear. At initial access, remove shipment screws.
• Caution! Only authorized refrigeration contractors should access condenser package!
Condenser
Fans
Condenser Coil
Compressor
& Controller
Sight Glass
Overflow Pan With
Electric Heater Rod
Filter Dryer
Receiver
Condensate Pan With
Hot Gas Serpentine Coil
Controller /
Electrical Box
Rear Grille
Note: Model GMSS852R (shown)
may not exactly reflect every feature
or option of your particular case.
Condenser Package (Self-Contained Model
GMSS352R.8110)
• Front grille, magnetic filter and close-off must be
removed to access condenser package; note that
screw removal is required to remove close-off.
• Condenser package is accessible ONLY at case front.
At initial access, remove shipment screws.
• Caution! Only authorized refrigeration contractors
should access condenser package!
12
CONDENSER PACKAGE (SELF-CONTAINED UNITS ONLY): MODEL GMSS352R.8110
Condenser Fans
Condenser Coil
Compressor
& Controller
Sight
Glass
Refrigeration
Lines
Overflow
Pan
Filter Dryer
Condensate
Controller /
Electrical Box
Magnetic
Filter
Front Grille
Note: Model
GMSS352R.8110
(shown) may not exactly
reflect every feature or
option of your
particular case.
Close-Off
13
FIELD ACCESS BOX / ELECTRICAL COMPONENTS / PROGRAM. CONTROLLER, ETC. - GMSSEH852R
1. Electrical Connections
Field Access Boxes, Electrical Outlets, LED
Drivers, Circuit Board, Transformer, Terminal
Strips, Programmable Controller, Etc.
> Note: Rear panel is shown transparent.
• Access to field access box is at case rear with
rear panel removed (no screw removal required).
• Note: Wiring process must be performed by
certified electrician only.
• When case is properly field-wired, it will energize
(no main power switch required).
2. Programmable Controller
• Programmable controller is in the pull-out
electrical box (accessible at case rear).
• Programmable controller’s display is also at
case rear (as shown below).
• See your particular programmable controller
operating instructions for more information.
3. Model Illustration Compatibility
• Model shown is GMSSEH852R.
• Your model may slightly differ.
4 x 4 Field
Access Box
2 x 4 Outlet
2 x 4 Outlet
Thermostat
Display
Transformer
LED Drivers
(Typical)
T-Blocks
Programmable
Controller
LED Drivers (Typical)
Note: Model GMSSEH852R (shown)
may not exactly reflect every feature
or option of your particular case.
14
FIELD ACCESS BOX / ELECTRICAL COMPONENTS / PROGRAM. CONTROLLER, ETC. - GMSSEH1252R
1. Electrical Components
Field Access Box, LED Drivers, Circuit Board,
Transformer, Fuse Block, Terminal Strips, Etc.
• Important: Wiring process must be
performed by certified electrician only!
• Note: Front panel is shown lifted up and off (no
screw removal required).
• Access to field access box is at case rear with
rear panel removed after screw removal (as
shown in lower-left breakaway illustration).
• Note: Wiring process must be performed by
certified electrician only.
Front Panel With Slots
For Hooks (Typical)
Raceway
(Left)
• When case is properly field-wired, it will energize
(no main power switch control required).
2. Programmable Controller
• Important: Wiring process must be
performed by certified electrician only!
• Programmable thermostat is in the pull-out
electrical box (accessible at case rear).
• Programmable thermostat display is also at case
rear (as shown below).
• See your particular programmable controller
operating instructions for more information.
Raceway
(Center)
Raceway (Right)
Field Connection
for Drain
Transformer
LED Drivers
(Typical)
T-Blocks
Temperature
Controller
Fuse
Block
Thermostat
Display
Case
Rear
Case Front Shown Below
Note: Model GMSSEH1252R (shown)
may not exactly reflect every feature or
option of your particular case.
15
FIELD ACCESS BOX / ELECTRICAL COMPONENTS / PROGRAM. CONTROLLER, ETC. - GMSS852R
1. Electrical Components
Field Access Box, VCD Drivers, Terminal Block,
Contactor, Wire Raceways, Etc.
• Important: Wiring process must be
performed by certified electrician only!
• Front panel is shown removed raceway cover is
shown transparent for illustrative purposes only.
• When properly field-wired (or plugged in), case
will be energized.
• Field access box is at front-left of case.
• Raceway cover must be removed to access
various electrical components (illustrated below).
2. Programmable. Controller / Main Power
Switch
• Important: Wiring process must be
performed by certified electrician only!
• Programmable controller and main power switch
is at case rear.
• When case has been properly connected to
power source, main power switch may be turned
on; programmable controller will energize.
• See your particular programmable controller
operating instructions for more information.
VDC
Drivers
Terminal
Block
Contactor
VDC
Drivers
Left Wire
Raceway
Right Wire
Raceway
Programmable
Controller
Main Power
Switch
--- Case Front View With Front Panel Removed ---
--- Case Rear View ---
Field
Access Box
Note: Model GMSS852R (shown)
may not exactly reflect every feature
or option of your particular case.
16
FIELD ACCESS BOX / ELECTRICAL COMPONENTS / PROGRAM. CONTROLLER, ETC. - GMSS352R.8110
1. Electrical Components
Field Access Box, VCD Driver, Terminal
Block, Contactor, Wire Raceways, Etc.
• Important: Wiring process must be
performed by certified electrician only!
• Front panel is shown removed raceway
cover is shown transparent for illustrative
purposes only.
• Electrical box/field access box is at
front-left of case.
• When properly field-wired (or plugged in),
case will be energized.
• Raceway cover must be removed to access
various electrical components.
2. Program. Controller / Main Power Switch
• Important: Wiring process must be
performed by certified electrician only!
• Programmable controller and main power
switch is at case front.
• When case has been properly connected to
power source, main power switch may be
turned on; programmable controller will
energize.
• See your particular programmable
controller operating instructions for more
information.
VDC
Drivers
Contactor
Right Wire Raceway
Terminal Block
Left Wire Raceway
Rear
Connectors
VCD Driver
Programmable Controller
& Main Power Switch
Note: Model
GMSS352R.8110
(shown) may not
exactly reflect
every feature or
option of your
particular case.
17
START-UP AND OPERATION / THERMOMETER LOCATION AND FUNCTION
1. Merchandiser Start-Up
• Unit will energize when properly field wired.
• Evaporator coil fans will automatically turn on.
From the front of the case, lift glass and remove
the decking; check to see that the coil fans are all
functioning properly.
• Lights switch is accessible at case front-left, near
upright. See illustration below.
• Turn light switch on. All lights should come on at
the same time. First time lighting may require a
short warm up-period for the bulbs.
• Slightly dim or a flickering of new bulbs is normal.
• If lights do not turn on, check all raceway
plugs. The lighting is wired in series so all
lights must be plugged in or receptacles
capped in order for the case to light.
• See next page for illustration of scale stand
receptacles.
Digital Thermometer
2. Thermometers - Location and Function
• Refrigeration section has been tested to
maintain temperature at or below 5° Celsius /
41° Fahrenheit.
• Spirit-filled and/or digital thermometers are
usually found at case rear near light switch.
• Thermometers are for monitoring warmest air
temperature.
• Thermometers reflect internal air temperature
only (not actual food temperature).
• Use probe thermometers to determine actual
product temperatures.
41°F
Light
Switch
or
Spirit-Filled
Thermometer
Note: Illustration shown may not
exactly reflect every feature or
option of your particular case.
18
MAINTENANCE FUNDAMENTALS: LED LIGHT FIXTURES
1. LED Style Light Fixtures
Removal of Faulty LED Lights:
• LED lights rarely require change-out.
• Contact Structural Concepts’ Technical Service
Department for replacement LED lights.
• Turn off LED light switch.
• To remove faulty LED light, follow these steps:
A. Disconnect plug from LED light.
B. Using both hands, grasp LED light assembly
(with its magnetic mounting clips). Pull
downward and off its shelf (or header).
C. Remove magnetic mounting clips from LED light by
pressing against flange part of clip with thumb.
>> Note: Mounting clips MAY be riveted to shelf or header.
In such instances, simply remove LED light from mounting
clips by pressing against flange part of clips with thumb.
Replacement of LED lights:
• Attach magnetic mounting clips onto LED light.
• Adjust magnetic mounting clips so they are equally
spaced on LED light.
• Reattach LED light assembly to its shelf/header.
• Position properly in shelf/header.
>> Note: If mounting clips are riveted to shelf (or header),
attach by placing LED in base of clip and then snapping
into clip at FLANGE SIDE.
• Press plug’s barrel-shaped insert all the way into LED
light.
• Important: If plug is not inserted ALL THE WAY IN the
LED light’s orifice, the light may not energize. See
“BAD” vs. “GOOD” insertion illustrations below.
• Turn LED light switch back on.
Magnetic
Mounting Clip View #2
LED
Lights
B
A
Plug
Barrel
Shaped
Insert
LED
Light
C
Magnetic
Mounting Clip View #2
No Gap
Gap
19
MAINTENANCE FUNDAMENTALS, CONT’D: EVAP. FANS, REFRIG. LINES, TXV & DRAIN ACCESS
Refrigeration
Lines Route
Drain
Evaporator Fans
(Typical)
Refrigeration Line
Valve
Balance
2. Evaporator Fan, Shroud, TXV, Drain, Access
• Caution! Turn main power switch off and/or disconnect from
outside power source.
• Remove decking and sub-deck
• Perform maintenance, service or cleaning as required.
• Return decking and sub-deck to unit in reverse order in which
they were removed.
• Note: Model GMSS1252R is illustrated below. Your case may
not exactly reflect every feature option as unit shown.
3. Front Air Discharge
• Do not set product or utensils on air discharge.
• Proper airflow and
temperature will be
compromised if airflow
is blocked.
• See illustration below.
TXV
(Typical)
Refrigeration
Lines
Filter
Dryer
Do Not Block Front
Air Discharge!
Note: Illustration shown may not
exactly reflect every feature or
option of your particular case.
20
MAINTENANCE FUNDAMENTALS, CONT’D: SHELF ASSEMBLY & UNDER CASE CLEANING
4. Shelf Assembly Removal
• Remove and set aside metal shelves.
• For lighted shelving, unplug the light cord and
detach from the rear shelf support.
• Slide light assembly back to unlock, then rotate
up to separate from brackets.
• Slide rear support back to unlock and rotate up to
separate from brackets.
• Remove brackets. Note: It may be necessary
to remove the bracket retainer. Pliers will be
required to accomplish this task; pull bracket
retainers out of upright toward front of case.
Shelf
Bracket Retainer
(one for each shelf)
Rear Rack
Support
Bulb
Front
Toe-Kick
Shelf (Typ.)
Light
Assembly
Front
Panel
(Typ.)
Under-Case
Cleaning
5. Under Case Cleaning
• Sufficient under case cleaning is accessible by
hand or 1-1/2 inch diameter cleaning tool such as
a vacuum hose.
• Extensive cleaning can be done by removing the
front panel and / or the rear toe-kick.
See MAINTENANCE FUNDAMENTALS section
in manual (under Light Ballast Access/Removal)
for in depth instructions on removing front panel.
Note: Illustration shown may not
exactly reflect every feature or
option of your particular case.
21
MAINTENANCE FUNDAMENTALS, CONT’D: HONEYCOMB AIR DIFFUSERS
7. Honeycomb Air Diffuser Removal
See PREVENTIVE MAINTENANCE (TO BE
PERFORMED BY TRAINED SERVICE PROVIDER)
section in this manual for cleaning frequency.
A. Wedge a non-metallic device of suitable strength
(such as a ballpoint pen) between the honeycomb
and the end panel.
Caution! Use care not to dislodge the heating wire
(that prevents condensation on the lamp assembly).
B. Apply pressure to collapse the honeycomb to
allow it to be pulled out of honeycomb retainer.
C. Carefully pry downward and away from the
honeycomb retainer.
A
B
C
D
E
F
Clean honeycomb with warm water and soap
solution. Submerse if necessary. Use brush to
dislodge stubborn or sticky residue. Dry by using
vacuum’s blow mode (vs. suction mode).
Honeycomb Air Diffuser Installation
D. Squeeze honeycomb to allow it to fit into the
honeycomb retainer.
E. Carefully slide honeycomb into place.
F. Adjust honeycomb so that it fits flat against
retainer. It must not be wavy or out of position.
Note: For honeycomb air diffusers in other
locations, these same general instructions apply.
Honeycomb
Note: Illustration shown may not
exactly reflect every feature or
option of your particular case.
22
CLEANING SCHEDULE TO BE PERFORMED BY STORE PERSONNEL* - PAGE 1 of 2
*This Service Is To Be Performed By Trained Service Providers Only
FREQ. INSTRUCTIONS
Weekly Decks: Wipe off decks with moist cloth dipped in mild soap and water solution.
• For stubborn or caked on stains, remove decks from case, submerse in warm, soapy
water and use soft-bristled brush to remove residue.
Daily
Acrylic Air Deflector: Clean with a warm water and mild soap solution and soft cloth.
Never use regular glass cleaner or ammonia-based cleaners on acrylic.
Daily All Glass / Mirrors: Clean side glass, front glass and mirrors with household or commercial
glass cleaner. Clean out door track with moist cloth.
Daily End Panels, Front Panel, Toe-Kicks, etc.: Wipe with warm water & mild soap solution and
non-abrasive cloth. Dry with soft, clean cloth or paper towel.
Weekly Stainless Steel Dividers (On Decks):
• Wipe down with warm water and mild soap solution and non-abrasive cloth.
• Should additional cleaning be necessary, remove from case and clean thusly:
A. As dividers are dishwasher safe, they may be cleaned in store dishwasher.
B. Submerse in warm/hot soapy water and wipe down with soft-bristled brush to
remove hardened residue.
Weekly Wood, Laminate and Painted Surfaces: Clean with mild soap, water solution and a soft
cloth.
Weekly
Magnetic Condenser Coil Filter (For Self-Contained Units):
• This filter helps prevent dust particles from entering condenser coil.
• It is accessible by opening rear hinged door (and is positioned over louvers).
• Clean magnetic condenser coil filter by following either of these steps:
1. As magnetic condenser coil filter is dishwasher safe, remove from case (no screw
removal required) and use a rag or soft-bristled brush to wipe off excess dust particles
from filter. Run in normal dishwasher cycle. Remove from dishwasher. Dry with soft
cloth or paper towel. Return to case.
2. If not using dishwasher, remove magnetic condenser coil filter from case. Use a rag
or soft-bristled brush to wipe off excess dust particles from filter. Submerse in warm,
soapy water. Use soft-bristled brush to remove dust, dirt, grease and grime that may
collect on filter. Rinse thoroughly. Dry with soft cloth or paper towel. Replace.
Monthly *Tub, Drain, Evap. Fans, Fan Brackets, Fan Shroud, Motors, TXV, Filter Dryer, Etc.:
Keep clean and free of debris which could clog tub and drain. To access drain area, remove
the deck and fan shroud.
• Vacuum tub under deck.
• Run hose into drain to flush out debris. Carefully hose out the tub.
• Wipe down components (listed above) with moist cloth dipped in mild soap and water
solution.
• Caution! Avoid splattering water over the case and surrounding areas!
• See MAINTENANCE FUNDAMENTALS: EVAPORATOR FANS, REFRIGERATION
LINES, TXV & DRAIN ACCESS section in operating manual for illustrations.
* UNLESS SPECIFIED OTHERWISE
23
CLEANING SCHEDULE TO BE PERFORMED BY STORE PERSONNEL* - PAGE 2 of 2
*This Service Is To Be Performed By Trained Service Providers Only
FREQ. INSTRUCTIONS
Quarterly
Under Case Cleaning (Remote Units): Caution! Do not clean flooring in a manner that
causes dust to be circulated into the air! Remove rear toe-kick and clean underside of case
with broom or vacuum with extended hose. Replace rear toe-kick to case.
Under Case Cleaning (Self-Contained Units): Caution! Do not clean flooring in a manner
that causes dust to be circulated into the air! Remove rear grille. Remove condenser package
shipment screws. Carefully slide condenser package out from under case. Remove toe-kick.
Clean underside of case with broom or vacuum with extended hose. Carefully slide condenser
package back under case. Return rear grille and front toe-kick to case.
Quarterly
Condenser Coil Cleaning: Remove rear condenser grille. Using an industrial strength
vacuum with bristled brush, clean the dust and dirt that collects on the condenser coil.
Caution! Be careful not to damage the fins on the coil.
Quarterly
*Clean Condensing Unit (including Evaporator Pan):
Warning! Hot gas loop coil may be hot. Allow to cool 15-minutes before cleaning.
Note: See CONDENSER PACKAGE (SELF-CONTAINED UNITS ONLY) section in this
manual for illustration.
1. Turn off refrigeration main power switch (or disconnect case from power source).
2. Remove rear grille (by lifting up and off). Remove shipping screws (if still attached).
3. Slide condenser package out from case rear.
4. Thoroughly clean evaporator pan area with de-scaling solution, such as CLR®. Rinse
thoroughly.
5. Use clean towel dipped in soap and water solution to wipe down fan motor, fan blades,
refrigeration lines, cords, knobs, sight glass, filter dryer, receiver, connectors, etc.
6. Wipe dry.
7. Slide condenser package back under case. There is no need to reattach shipping
screws (if any).
8. Replace rear grille.
9. Turn power back on (or reconnect power) to merchandiser.
Quarterly *Honeycomb: See MAINTENANCE FUNDAMENTALS - HONEYCOMB AIR DIFFUSERS
section in this manual for removal, replacement and cleaning instructions.
* UNLESS SPECIFIED OTHERWISE
24
TROUBLESHOOTING - GENERAL - PAGE 1 of 2
CONDITION TROUBLESHOOTING
Case Not Lining Up See Installation Section for instructions on properly aligning
case (alongside other cases) and adjusting levelers.
Product is Drying Out Check the relative humidity in the store.
Water Is On The Floor Check that the drain trap is free of debris.
Check that the drain hose is correctly positioned over the floor
drain.
Check store conditions. Conditions should be 55% humidity /
75° Fahrenheit to prevent condensation.
Fan Emits Excessive Noise Check that the case is aligned, level and plumb.
*Check evaporator fan for cleanliness.
*Unplug/power off fan motors. Check motor shaft for excessive
bearing wear.
*Check that fan motors are securely mounted in brackets.
*Verify that fan blades are securely mounted to fan motor.
*Check that nothing is preventing blade rotation.
*Check that the fan shroud is properly secured.
Fans Are Not Working *Check that fans are plugged in at the fan shroud.
*Check for foreign material obstructing fan performance.
*Check that fan blades freely rotate within fan shrouds.
*Check that power is going to fans.
*Check that fan wiring is connected on terminal blocks.
Check that MAIN power switch (if any) is turned on.
*Check if there is ice build up blocking the fan.
System Is Not Operating Check that the utility power is on.
Check the circuit breaker box for tripped circuits.
Check that the MAIN power switch (if any) is turned on.
Check that unit is properly plugged in (self contained units).
*This Service Is To Be Performed By Trained Service Providers Only
25
TROUBLESHOOTING - GENERAL - PAGE 2 of 2
CONDITION TROUBLESHOOTING
Case Is Not Holding
Temperature
If a large amount of warm product was added to the case, it will take time for
the temperature to adjust. Unit needs product to be pre-chilled.
Check that the discharge air grille is not disrupted or blocked by product.
Check that the case is not in the sun or near a heat or air-conditioning vent.
If case is located near front doors, temperature fluctuation can hinder unit’s
ability to maintain temperature. See OVERVIEW / CONDITION TYPE /
COMPLIANCE / WARNINGS / PRECAUTIONS / WIRING section in this
manual for specifics.
Case Lights Are Not
Working
Check that light switch is in the on position.
LED Lights: Check plugs and lights for proper connection (illustrated below).
Check for burned out bulbs. If so, turn lights off & replace.
Trained Service Providers Only: Check to insure voltage at ballasts. If voltage
is entering but not exiting ballast, ballast is faulty.
No Gap
Gap
LED Light
Plug
LED’s Barrel
Shaped Insert
26
TROUBLESHOOTING - CONDENSING SYSTEM*
CONDITION TROUBLESHOOTING
Head Pressure Too High Check that the condensing coil is not dirty or covered.
Check that condensing fans are working.
Check that refrigerant is not overcharged.
Perform sub-cooling check and verify that no contaminates are in system.
Check that close-offs are intact (around condensing coil) and that air is not
recirculate.
Check that store ambient temperature isn’t above maximum allowed.
See OVERVIEW / TYPE / WARNINGS / PRECAUTIONS / WIRING
DIAGRAM section in this manual.
Liquid line filter dryer may be plugged and need to be replaced.
Head Pressure Too Low Check if sight glass is flashing or showing low charge.
Check that suction pressure isn’t too low.
Compressor reed valves may be faulty. Check for high suction pressure /low
head pressure. If pressure is out of range, perform pump down.
*This Service Is To Be Performed By Trained Service Providers Only
27
TROUBLESHOOTING - EVAPORATOR SYSTEM*
CONDITION TROUBLESHOOTING
Low Suction Pressure Check if sight glass is flashing or showing low charge.
Check that expansion valve (TXV) isn’t restricted. Check element charge.
Check that refrigeration lines and/or hoses are not kinked on either high or
low sides.
Check that evaporator fan motors are working.
Check that superheat is between 6 °F to 8 °F.
Check that there is no air recirculation around evaporator coil.
Check that evaporator coil is not iced up.
High Suction Pressure Check for refrigerant overcharge.
Compressor reed valves may be faulty. Check for high suction pressure /
low head pressure. If pressure is out of range, perform pump down.
Check that the “cooling load” isn’t high. Product must be pre-chilled before
placing in refrigerated section of case.
Check that unit is not exposed to direct sunlight via windows or any other
heat source (ovens, fryers, etc.).
Check that superheat adjustment isn’t low.
Check TXV bulb installation
a. Poor thermal contact.
b. Warm location.
*This Service Is To Be Performed By Trained Service Providers Only
28
SERIAL LABEL LOCATION & INFO LISTED / TECH INFO & SERVICE / REFRIGERATED CASES ONLY
--- Sample Serial Label For Refrigerated Cases ---
MODEL NRS3648RXV-SAMPLE
SERIAL NO. 12345X30DZ098765
TYPE II DISPLAY REFRIGERATOR: THIS EQUIPMENT IS INTENDED FOR USE IN AN AREA
WHERE THE ENVIRONMENTAL CONDITIONS ARE CONTROLLED AND MAINTAINED SUCH
THAT THE AMBIENT TEMPERATURE DOES NOT EXCEED 80 °F (27 °C).
888 E. Porter Rd - Muskegon, MI 49441
3048256
Conforms to UL Std. 471
Conforms to NSF/ANSI Stds. 2 & 7
CERTIFIED TO CAN/CSA
STD C22.2 NO 120
ELECTRICAL RATING
REFRIGERANT
DESIGN PRESSURE
MINIMUM CIRCUIT AMPACITY
MAXIMUM OVERCURRENT
120/1/60 16 A
R513A AMOUNT 50 OZ
HIGH 186 LOW 88
20A
20A
Super Heat Temp 6-8 °F FOR PARTS AND SERVICE
Defrost 6 defrosts per day, 45 °F CALL 1-800-433-9490
Serial Label Location & Information Listed /
Technical Information & Service
• Serial labels are affixed at a wide range of places
(on the header, near thermostat, at case rear,
behind panels/toe-kicks, on electrical boxes, etc.).
• Serial labels contain electrical, temperature and
refrigeration information, as well as regulatory
standards to which the case conforms.
• Sample serial label shown below.
• For additional technical information and service, see
the TECHNICAL SERVICE page in this manual for
instructions on contacting Structural Concepts’
Technical Service Department.
Fusion
Sample QR Code
SCAN FOR PRODUCT LITERATURE
PROGRAMMABLE CONTROLLER (SELECT, CLICK ON OR SCAN QR CODE FOR INFORMATION)
29
Carel® iJF Platform
Carel® PJEZ Platform
Carel® ir33 Platform
Dixell® XM670K-XM679K Platform
To Access Information About The Programmable
Controller That Is Used On Your Case,
Follow These Instructions:
> If Viewing This Document on Smart Phone, Tablet
or Computer, Select/Click On The QR Code at Right.
> If Viewing This Document In Print (Hard Copy),
Scan The QR Code at Right With Your Smart Phone
or Tablet.
Determine Which Programmable Controller Is On Your Case (Controllers
That Are Commonly Used By Structural Concepts Are Shown Below).
Your Particular Programmable Controller May Differ.
STRUCTURAL CONCEPTS TECHNICAL SERVICE CONTACT INFORMATION & LIMITED WARRANTY
30
TECH SERVICE/WARRANTY CONTACT INFO:
1 (800) 433-9490 / EXTENSION 1
DAYS/HOURS AVAILABLE:
MONDAY - FRIDAY (CLOSED HOLIDAYS)
8:00 a.m. TO 5:00 p.m. EST
YOU MUST HAVE THE FOLLOWING INFO AVAILABLE
BEFORE CONTACTING STRUCTURAL CONCEPTS:
SERIAL NO. / MODEL NO. / STORE NO. / STORE
ADDRESS / DETAILS (PHOTOS, LEAK LOCATIONS,
DAMAGE, STORE’S AMBIENT CONDITIONS, ETC.)
To Access The Limited Warranty To Your
Case, Follow These Instructions:
> If Viewing This Document on Smart Phone,
Tablet or Computer, Select/Click On The QR
Code at Right.
> If Viewing This Document In Print (Hard
Copy), Scan The QR Code at Right With Your
Smart Phone or Tablet.
