Structural Concepts Oasis B3924RH User manual

REV C DATE: 08/11/2022
USER MANUALS\21-14028_PUBLIX_OASIS_USER MANUAL_B3924RH_REF-HTD_SELF-CONT_SIDE-BY-SIDE_CASE
888 E. Porter Road ∙ Muskegon, MI 49441 Phone: [phone] Fax: [phone] www.structuralconcepts.com
MODEL B3924RH REFRIGERATED/HEATED SIDE-BY-SIDE COMBO OEO* WALL CASE
*Online Easy Ordering
SCC P/N
20-14028
Oasis
READ AND SAVE THESE INSTRUCTIONS
® USER
MANUAL

2
TABLE OF CONTENTS / MODELS INCLUDED IN MANUAL
TABLE OF CONTENTS / MODELS INCLUDED IN MANUAL …………………………………………….
OVERVIEW / TYPE / COMPLIANCE / WARNINGS / PRECAUTIONS / WIRING / PLUGS ….….....…..
CASE REMOVAL FROM SKID ………………………………………..……………………………………….
INSTALLATION: POSITIONING AND ALIGNING CASE / ADJUSTING LEVELERS ……..……………
OVERVIEW: REFRIGERATED AND HEATED SECTIONS / THERMOMETERS …………….....………
POWER SWITCHES TO ENTIRE CASE & REFRIGERATED SIDE ONLY / LED LIGHT SWITCHES .
CONDENSATE PACKAGE ACCESS …………………………………………………………………………
LED STYLE LIGHT FIXTURES ….……………………………………………………………………………..
THERMOSTAT CONTROLLER TO REFRIGERATED SIDE OF CASE .………………………………….
THERMOSTAT CONTROLLERS TO HEATED SIDE OF CASE …………………………………………..
CASE STARTUP: REFRIGERATION SETTINGS / HEATER SETTINGS / SHUTTING DOWN CASE
EVAPORATOR COIL / TXV / FAN AND MOTOR / DRAIN / TROUGH / COVER, ETC……………….…
CLEANING SCHEDULE - TO BE PERFORMED BY STORE PERSONNEL …………………………….
PREVENTIVE MAINTENANCE (TO BE PERFORMED BY TRAINED SERVICE PROVIDER) ………..
TROUBLESHOOTING (TO BE PERFORMED BY STORE PERSONNEL) …………………..……….….
TROUBLESHOOTING (TO BE PERFORMED BY TRAINED SERVICE PROVIDERS ONLY) ………...
TROUBLESHOOTING - CONDENSING SYSTEM (TO BE PERFORMED BY TRAINED SERVICE
PROVIDERS ONLY) …..………………………………………………………………………………...
TROUBLESHOOTING - EVAPORATOR SYSTEM (TO BE PERFORMED BY TRAINED SERVICE
PROVIDERS ONLY) …………………………………………………………………………………….
SERIAL LABEL LOCATION & INFORMATION LISTED / TECH INFO & SERVICE ……….…….….....
CAREL® ir33 PLATFORM PROGRAMMABLE CONTROLLER FOR REFRIGERATED UNITS ………..
CAREL® ir33 PLATFORM PROGRAMMABLE CONTROLLER FOR HEATED UNITS ………………….
TECHNICAL SERVICE CONTACT INFORMATION & WARRANTY INFORMATION ..….....................
2
3-4
5
6
7
8
9
10
11
12
13
14
15
16-18
19
20
21
22
23
24-26
27-29
30

3
OVERVIEW
 This Oasis® self-service combo case merchandises
both heated and refrigerated product.
 The refrigerated side of the case is designed to
merchandise refrigerated packaged products at 38 °F
(3 °C) or less product temperatures.
 The heated side of the case (both shelves and deck)
is designed to maintain product at a range of
temperatures.
 Note: Product must be pre-chilled (or pre-heated)
PRIOR TO placing in merchandiser. This unit is NOT
designed to cool (or heat up) ambient product.
 Cases should be installed and operated according to
this operating manual’s instructions to ensure proper
performance. Improper use will void warranty.
TYPE
This unit is designed for the display of products in ambient
store conditions where temperatures and humidity are
maintained within a specific range.
 For Type 1 Conditions (most cases): ambient
conditions are to be at 55% maximum humidity and
maximum temperatures of 75 °F (24 °C).
 For Type 2 Conditions: ambient conditions are to be
at 60% maximum humidity and maximum
temperatures of 80 °F (27 °C).
 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.
WARNINGS
 This page contains important warnings to prevent
injury or death. Please read carefully!
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
Heated shelves and decking are hot!
Turn off and allow to cool
before cleaning or removing from case.
WARNING
ELECTRICAL
HAZARD
WARNING
KEEP
HANDS
CLEAR
WARNING
HOT
SURFACE
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 / WIRING / PLUGS - 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.

4
OVERVIEW / TYPE / COMPLIANCE / WARNINGS / PRECAUTIONS / WIRING / PLUGS - PAGE 2 of 2
CAUTION! GFCI BREAKER USE 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.
 Unit must be kept at least 15-feet from exterior doors, overhead HVAC
vents or any air curtain disruption to maintain proper temperatures.
 Unit must not be exposed to direct sunlight or any heat source (ovens,
fryers, etc.).
 Keep at least 8-inch clearance above unit for air discharge
(self-contained units only).
CAUTION
PRECAUTIONS
 Following are important precautions to prevent
damage to unit or merchandise. Read carefully!
 See previous page for specifics on OVERVIEW, NSF
TYPE, COMPLIANCE and WARNINGS.
WIRING DIAGRAM
 Each case has its own wiring diagram folded and in its
own packet.
 Wiring diagram placement on case varies.
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.
CAUTION! CHECK HOT GAS CONDENSATE PAN POSITION AND PLUG
Water on flooring can cause extensive damage!
Before powering up unit, check the following:
 Condensate pan MUST BE positioned directly under condensate drain.
 Overflow tray plug MUST BE securely plugged into receptacle.
 Overflow pan must have TWO PLUGS connected to its box if the unit
also has Clean Sweep™ option.
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! LAMP REPLACEMENT GUIDELINES
LED lamps reflect specific size, shape and overall design.
Any replacements must meet factory specifications.
CAUTION

5
CASE REMOVAL FROM SKID
Case Shipping
Brackets (Typ.)
1. Removing Case Shipping Brackets That Are Attached To Skid
 Remove screws holding case shipping brackets to skid.
 Remove case shipping brackets from skid.
 See illustrations below. Note: Shipping brackets will vary in size, shape, material and location depending
2. Remove Case (With Casters) From Skid
A. Place ramp up against skid (to allow case to
smoothly slide off from skid).
B. Maintain support of case at all times or center of
gravity may cause case to fall.
C. Raise levelers (up and off skid); casters must
now rest on skid. Slide unit to rear of skid. Slide
down ramp and off from skid.
Support
case
while
sliding
down
ramp.
Ramp
upon case type and model.

6
INSTALLATION: POSITIONING AND ALIGNING CASE / ADJUSTING LEVELERS
Note: Units shown may not depict an exact representation of your particular unit being installed.
Pry Bar
Adjustable
Wrench
1. Position & Align Case Alongside Other Cases
 As discussed on previous page, using casters,
roll case into proper position.
 Before adjusting levelers, make certain that the
case is in proper position and, if required, aligned
with adjoining cases.
 This may require the repositioning of the case
you are installing or the already positioned case.
2. Adjust Levelers
 After case is in position, adjust case so it is level
and plumb (see illustration at right).
 You may need to remove front grille and/or rear
toe-kick to access levelers.
 Use adjustable wrench (and possibly a pry bar)
to adjust leveler.
 Do not use pry bar on toe-kick as it may buckle.
 Do not use pry bar on end panel as it may chip.
 Use pry bar ONLY on base frame to avoid
damaging case.
 See illustrations below.
Caster (Typ.) Base Frame
(Typ.)
--- Model B3924RH Shown With Front Grille Removed ---
Thumbscrew

7
OVERVIEW: REFRIGERATED AND HEATED SECTIONS / THERMOMETERS
Overview
 Model B3924RH is illustrated below.
 Merchandiser is shown partially disassembled for
illustrative purposes only.
 Remove front grille to access condenser
package.
1. Refrigerated (One End of Case)
 One section of case is to be refrigerated.
 See illustration below.
2. Heated Section (Opposite End of Case)
 Opposite section of case is to be heated.
 See illustration below.
Refrigerated Section /
Shelving (Typ.)
Heated Section /
Shelving & Deck
Thermometer
(Refrigerated Section)
Important! Thermometers Overview
 Thermometers reflect warmest air
temperature in merchandiser (not actual
food temperatures).
 You must use probe thermometers to
determine actual product temperatures.
Front Grille
Deck
Condenser Package /
Controls Case Master
Power Switch
Thermometer
(Heated Section)
Rear Plenum

8
POWER SWITCHES TO ENTIRE CASE & REFRIGERATED SIDE ONLY / LED LIGHT SWITCHES
3. Power Switch To Refrigerated Side Only
 The Power Switch To Refrigerated Side Only is
located in the electrical box on refrigerated side.
 Power to LED lights on refrigerated side are also
controlled by this switch.
 See illustration below.
4. Light Switch To Refrigerated Side Only
 The Light Switch To Refrigerated Side Only is
located in the upper plenum on refrigerated side.
 Light switch will turn on all LED lights on
refrigerated side only.
 BOTH Power Switches MUST BE turned on for
this light switch to function.
 See illustration below.
Power Switch To
Refrigerated Side Only
(Including LED Lights
on Refrigerated Side)
Overview
 Model B3924RH is illustrated below.
 This model may not reflect every feature or
option of your particular case.
 Four (4) different switches control various
aspects of the case; so, please read carefully!
1. Power Switch To Entire Case
 The Power Switch To Entire Case controls
BOTH the refrigerated and heated sides of the
case (as well as entire case’s LED lights).
 It is located at front-right-lower side of case.
 You must remove front grille to access Master
Power Switch.
 See illustration below.
2. Power Switch To Heated Side Only
 The Power Switch To Heated Side Only is located
in the upper plenum on heated side.
 LED lights on heated side are also controlled by
this switch.
 See illustration below.
Light Switch To
Refrigerated
Side (Only)
Power Switch To
Entire Case (Both
Refrigerated And Heated
Sides). Note: This
Includes LED Lights
On Both Sides
Power Switch To Heated
Side Only (Also Controls
Its LED Lights)
1
2
4
3
Front
Grille

9
CONDENSATE PACKAGE ACCESS
Condensate Package Access
 Caution! Only Trained Service
Providers Are To Access
Condensate Package.
 Turn off power before accessing and
sliding out from under merchandiser.
 Condensate package is accessible at
case front.
 At initial slide-out, it may be
necessary to remove compressor pan
shipment screws (see illustration
below for location).
 Remove front grille by simply lifting
up and off (no screw removal is
required).
 Compressor package pan rests on
drawer slides.
 Slide compressor package straight
out from underside of the case to
prevent damage to unit.
 See PREVENTIVE MAINTENANCE
(TO BE PERFORMED BY TRAINED
SERVICE PROVIDER) section in this
operating manual for cleaning
specifics on the condenser package
Front Grille
Condensate
Package
Compressor Pan
Shipment Screw (Typ.).
Enlarged For Illustrative
Purposes Only.
Model B3924RH Shown With
Front Grille Removed

10
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.
LED STYLE LIGHT FIXTURES
Light
Fixtures
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-right.
 Turn LED light switch back on.
No Gap
Gap
Magnetic Mounting
Clip View #2
LED
Lights
B
A
Plug
Barrel
Shaped
Insert
LED
Light
C
Magnetic Mounting
Clip View #1
--- Model B3924RH Shown Partially Disassembled ---

11
THERMOSTAT CONTROLLER TO REFRIGERATED SIDE OF CASE
1. Power Switch To Entire Case
 Power Switch To Entire Case must be turned
ON to energize refrigerated side of case.
 You must remove front grille to access this
switch.
 See “Power Switch To Entire Case” at lower
right illustration.
2. Power Switch To Refrigerated Side of Case
 Power switch that controls refrigerated side of
case is at front-left condenser package.
Power Switch To
Refrigerated Side Only
Carel® Thermostat
--- Model B3924RH Shown With Front Grille Removed ---
Power Switch To
Entire Case
 You must remove front grille from case to access
this power switch.
 The Carel® thermostat at front-left of case ONLY
controls refrigerated section to case.
 See CAREL® CONTROLLER section of manual
for thermostat settings and operation.
Front Grille

12
THERMOSTAT CONTROLLERS TO HEATED SIDE OF CASE
1. Energizing Case
 Power Switch to Entire Case (in electrical
box) must be turned on to energize case.
 Remove front grille from case to access.
 See below-right illustration for switch location.
2. Power Switch To Heated Side Only
 Power Switch To Heated Side Only
controls both thermostats and LED lights on
heated side.
 See top-right illustration for switch location.
DEC
Heated Section
SHELF 1
SHELF 2
SHELF
3. Thermostat Controls To Shelving and Deck
 Thermostat controls to heated shelving and deck
are at right side of condenser package.
 Note etchings on electrical box: Thermostat “S1”
controls top shelf heat. Thermostat “S2,” and “S3,”
controls heat to shelves 2 and 3. Thermostat “D/S4”
controls heat to deck/shelf 4.
 See illustration below-right.
Power Switch To Entire Case
(Both Refrigerated And Heated
Sides As Well As LED Lights)
Power Switch To Heated Side
Only (Also Controls The
Thermostats and LED Lights)
--- Upper Plenum View ---

13
CASE STARTUP: REFRIGERATION SETTINGS / HEATER SETTINGS / SHUTTING DOWN CASE
4. Adjusting Thermostat Settings
 Thermostats have been pre-set at factory.
 You should RARELY need to adjust thermostats on
this case.
 If you MUST adjust thermostat settings, see Carel®
Controller section in manual for instructions.
 After adjusting thermostat(s) settings, allow
30 MINUTES at new settings for temperature to
affect product.
5. Shutting Down Case
 Remove all product from case.
 Turn main power switch to “OFF” position.
 Caution! On heated side of case, deck and
shelving is hot! Allow case to cool for 45
minutes before cleaning.
 Note: When heated main power is turned back on,
you do NOT need to re-enter settings.
Temperatures will revert back to case’s LATEST
SETTINGS before shutdown.
1. Main Power Switch / Light Switch
 See previous two pages for specifics on powering
up case (both refrigerated and heated sides).
2. Cooling Case (Refrigerated Side)
 Note: Case is designed to MAINTAIN product
temperatures – NOT cool product! Do not place
product that is warm or ambient temperature in
case.
 Before placing product food in case, allow
refrigerated side of case 1 hour (60-minutes)
for case to achieve its desired temperature.
3. Heating Up Case (Heated Side)
 Note: Case is designed to MAINTAIN product
temperatures – NOT heat up product! Do not place
product that is cold or ambient temperature in case.
 Before placing product in case, allow heated
side of case 1 hour (60-minutes) for case to
achieve its desired temperature.
Heated Side
of Case
Refrigerated
Side of Case
Carel® Thermostat
To Refrigerated
Side of Case
Carel® Thermostats
To Heated
Side of Case

14
EVAPORATOR COIL / TXV / FAN AND MOTOR / DRAIN / TROUGH / COVER, ETC.
TXV
Evaporator Coil / TXV / Fan / Motor / Drain, Etc.
 When appropriate power switches are turned on,
refrigeration section will energize (see MASTER
POWER SWITCH / POWER SWITCH section in
this manual for specifics).
 Evaporator coil fan should turn on. Lift decking to
check that evaporator coil fan is rotating.
 Caution! Rotating fan can cause injury.
Turn off power before accessing this area!
Evap. Fan &
Motor
Evap. Fan
Shroud
DrainWiring
Route
 When the case is in start up mode or has been
idle for a long period of time, the unit will require
75 minutes of run time to pull-down temperature.
 Components are under decking.
 Decking must be removed for access.
 Note: Partially disassembled view below shown
for illustrative purposes only.
Decking (On Heated
Side of Case)
Evaporator
Coil
Evaporator Coil
Cover
Trough
Refrigeration
Lines
--- Model B3924RH Shown Sectioned For Illustrative Purposes Only ---

15
CLEANING SCHEDULE - TO BE PERFORMED BY STORE PERSONNEL
AREA TO BE
CLEANED
FREQ. INSTRUCTIONS
Sides / Front
Grille / Top
Board / Front
Grille / Rear
Plenums
Daily Wipe down with warm, soapy water and clean cloth. Dry with clean cloth or paper
towel.
Metal Shelving
(Refrigerated
Section)
Daily Wipe down with warm, soapy water and clean cloth. Dry with clean cloth or paper
towel.
Wire Racks (In
Heated Side)
Daily To
Weekly
 Caution! Wire racks on heated side are HOT! Allow case to cool for 45
minutes before cleaning.
 Wipe down wire racks. If hardened residue is on racks, carefully
remove racks from case. Submerse in hot, soapy water. Use soft-bristled
brush to removed hardened residue. Rinse. Dry. Return racks to case.
Heated
Shelving and
Deck
Daily To
Weekly
 Caution! Shelving and deck on heated side are HOT! Allow case to cool
for 45 minutes before cleaning.
 Wipe down with warm, soapy water and clean cloth. Rinse. Dry with clean
cloth or paper towel.
Decking Daily To
Weekly
Daily
 Caution! Deck on heated side are HOT! Allow case to cool for 45 minutes
before cleaning.
 Wipe down deck with warm, soapy water. Rinse with water-filled spray bottle
and sponge or clean cloth. Dry.
 For large spills or hardened residue, remove decks and submersed in warm
soapy water, and clean with sponge or cloth.
 Caution! Do not use Brillo® pad or similar abrasive cleaners as they may mar
decking finish. Rinse. Dry. Return decking to case.
Weekly
 Caution! Deck on heated side are HOT! Allow case to cool for 45 minutes
before cleaning.
 Caution! Due to functioning cooling fan, it is advisable to turn off power
to unit at this step.
 Remove decks. Clean entire areas at underside of decks. For refrigerated
side, coil cover, TXV, sight glass, filter dryer, drain, trough, etc.) with warm
water, mild soap solution and soft cloth. Rinse with spray bottle and clean
water. Dry thoroughly.
 Replace all items in reverse order in which they were removed.
Removable,
Magnetized
Condenser
Coil Filter
(Optional)
Weekly  Depending upon environment, it may be necessary to clean filter weekly.
 Filter MUST be cleaned at least monthly.
 Remove from case. Submerse in warm, soapy water. Use soft-bristled brush to
remove dust, grease and grime collected on filter. Rinse thoroughly.
Return filter to case.
 See previous page in this manual for illustration.
Condenser
Coil
Monthly Remove front grille. Slide condenser package out from underside of case.
Vacuum or brush grille condenser coil. Use metal or fiber brush to remove dust
and dirt that can collect on condenser coils. Be careful not to damage the fins on
the coil.

16
PREVENTIVE MAINTENANCE (TO BE PERFORMED BY TRAINED SERVICE PROVIDER) - PAGE 1 of 3
FREQ. INSTRUCTIONS
Quarterly Under Case Cleaning:
 Whenever refrigeration package is slid out from underside of case, vacuum (or use
broom) under the case to remove all dust, debris and dirt that may collect.
Quarterly Tub Area (Evaporator Coil, Drain, Fans, Etc.):
Caution! Disconnect power from case before cleaning tub, coil, fan, motor & drain area!
 Use vacuum to clean entire area.
 After vacuuming, clean area with warm water, clean cloth, and mild soap solution.
 Remove any debris that may clog drain (or trough).
 Wipe down fan blades, motors and brackets with moist cloth.
Quarterly Condenser Coil:
 Remove front grille (simply by lifting up and off).
 Vacuum or brush grille condenser coil.
 Use metal or fiber brush to remove dust and dirt that can collect on condenser coils.
 Be careful not to damage the fins on the coil.
WARNING! TURN OFF CASE BEFORE PERFORMING PREVENTIVE MAINTENANCE!

17
PREVENTIVE MAINTENANCE (TO BE PERFORMED BY TRAINED SERVICE PROVIDER) - PAGE 2 of 3
1. Quarterly Honeycomb Air Diffuser Removal
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
E
C
D
F
Important: 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).
2. Quarterly 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
Air Diffuser
--- Model B3924RH Shown Partially Disassembled ---

18
PREVENTIVE MAINTENANCE (TO BE PERFORMED BY TRAINED SERVICE PROVIDER) - PAGE 3 of 3
FREQ. INSTRUCTIONS
Quarterly Honeycomb: Check honeycomb air diffuser to determine if it is dirty. See previous page of
this manual for cleaning specifics.
Quarterly Hot Gas Condensate Pan / Overflow Condensate Pan (Electrical Coil):
 Warning! Condensate Pans Are HOT! Disconnect power from case and allow to cool
before cleaning.
 Access to condensate pan may be gained by removing front grille and carefully sliding out
from under case. It MAY be necessary to remove shipment retention screws prior to
sliding out from underside of case.
 Use a scrub-brush and a de-scaling solution such as CLR® (to prevent corrosion, lime and
rust). Follow instructions as to proper dilution, safety precautions and scrubbing method.
 After thoroughly cleaning pan with scrub-brush and solution, rinse thoroughly with clean
water (in spray bottle) and wipe dry with sponge or paper towel.
 Slide refrigeration assembly back under case (at front).
 Replace front grille.
 See illustration below for component layout.
Filter Dryer
Electrical
Starter Unit
Condenser
Coil Housing
Condenser Coil Fan,
Fan Housing & Motor
Overflow Condensate
Pan (and Electrical
Components)
Hot Gas Loop
Condensate Pan
Sight Glass
Compressor
Electrical Box (Power
Switch To Entire Case,
Carel® Thermostats,
LED Driver,
Terminal Block)
Wicking Material
Electrical Box (Power
Switch, Carel®
Thermostat, LED
Driver, Terminal
Block, Contactor)

19
TROUBLESHOOTING (TO BE PERFORMED BY STORE PERSONNEL)
CONDITION TROUBLESHOOTING
Case Is Not Level See INSTALLATION section in this manual for additional information.
Case Not Lining Up See INSTALLATION section in this manual for instructions on properly
aligning case (alongside other cases) and adjusting levelers.
Water Is On The Floor Call service provider.
Fan Emits Excessive Noise Call service provider.
Case Lights Are Not
Working
Check that light switch is in the on position.
Turn light switch off and check bulb for proper connection.
 Check that the light cord is plugged in properly.
 Note: LED light and plug must be connected in a specific manner or
they will not work.
 Make certain flat edge of plug connects to flat edge of LED light.
 See LED LIGHT REMOVAL/REPLACEMENT, PLUG/CORD
POSITIONING, PROPER PLUG INSERTION section in this manual
for illustrations.
If case lights still do not come on, call service provider.
Case is Not Holding Proper
Temperature
If a large amount of warm product was added to the case, it will take time
for the temperature to adjust.
 Product must be pre-chilled before placing in refrigerated section.
 Product must be pre-heated before placing on heated shelves.
For temperatures that are out of range on heated shelves or deck, see
THERMOSTAT CONTROLLERS TO HEATED SIDE OF CASE
section in this manual.
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.
Check air grilles (at front of refrigerated side decking) for obstructions.
 DO NOT set product on air grilles as this will prevent proper airflow!
If case still is not holding proper temperature, call service provider.

20
TROUBLESHOOTING (TO BE PERFORMED BY TRAINED SERVICE PROVIDERS)
CONDITION TROUBLESHOOTING
Water Is On The Floor Check that the drain trap is free of debris.
Check that the drain hose is correctly positioned over floor drain.
Check store conditions. See OVERVIEW / TYPE / COMPLIANCE /
WARNINGS / PRECAUTIONS / WIRING / PLUGS pages in this manual
for humidity and temperature ranges to prevent condensation.
Fan Emits Excessive Noise Check that the case is aligned, level and plumb.
Check evaporator fans for cleanliness.
Unplug/power off fan motors. Check to determine whether faulty.
Check that fan motors are securely mounted in brackets.
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 (certified electricians only).
Check that fan wiring is connected on terminal blocks (certified
electricians only).
System Is Not Operating Check that the utility power is on.
Check the circuit breaker box for tripped circuits.