Page 1
READ AND SAVE THESE INSTRUCTIONS
INSTALLATION &
SCC P/N 99523
OPERATING MANUAL
SELF-CONTAINED REFRIGERATED SERVICE / SELF-SERVICE MERCHANDISER
888 E. Porter Road · Muskegon, MI 49441 Phone: 231.798.8888 Fax: 231.798.4960 www.structuralconcepts.com
I:\Oper Manuals\Oasis\COU2757R_COU2757R-3748R_99523.pub
Model COU2757R 27 1/2”L* x 57”H x 33”D
Model COU2757R.3748 27 1/2”L* x 57”H x 33”D
*Includes end panels.
Rev J Date: 3.11.2012
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TABLE OF CONTENTS
OVERVIEW / NSF® TYPE / COMPLIANCE / WARNINGS / PRECAUTIONS / WIRING ……….....…..
START-UP AND OPERATION ..….…………...…...…..…………………………………….…….…………
MAINTENANCE FUNDAMENTALS ….…………...….....……………..………………………………….…
ELECTRICAL & REFRIGERATION FUNDAMENTALS ……...………..……………………….………….
REFRIGERATION FUNDAMENTALS ………………………………………………………………………..
SERIAL LABEL LOCATION & INFORMATION LISTED / TECHNICAL INFO & SERVICE …………….
CLEANING SCHEDULE [TO BE PERFORMED BY STORE PERSONNEL] …………………………….
CLEANING SCHEDULE [TO BE PERFORMED BY TRAINED SERVICE PROVIDERS ONLY] .....…..
PREVENTIVE MAINTENANCE - HONEYCOMB AIR DIFFUSERS [TO BE PERFORMED BY
TRAINED SVC. PROVIDERS ONLY] …………………..…………………………………..……….
TROUBLESHOOTING [TO BE PERFORMED BY STORE PERSONNEL] ……………………..……….
TROUBLESHOOTING [TO BE PERFORMED BY TRAINED SERVICE PROVIDERS ONLY] ………..
TROUBLESHOOTING [BY TRAINED SERVICE PROVIDERS ONLY] - CONDENSING SYSTEM …..
TROUBLESHOOTING [BY TRAINED SERVICE PROVIDERS ONLY] - EVAPORATOR SYSTEM ….
ILLUSTRATED PARTS BREAKDOWN - COU2757R ……………………………………………………..
PARTS LIST - COU2757R ……………………………………………………………..……………………...
GENERAL LAYOUT OF CONDENSER PACKAGE ………………………………………………………..
CAREL® CONTROLLER - PROGRAMMING THE INSTRUMENT….…………………………….……....
CAREL® CONTROLLER - USER INTERFACE, SUMMARY TABLES OF ALARMS & SIGNALS …….
CAREL® CONTROLLER - Summary Table of Operating Parameters (After Programming Key) ……..
JOHNSON CONTROL - MR3CCUHV A
JOHNSON CONTROL - MR3CCUHV Programming Control Module ……….…………….………..……
STARBUCKS TECHNICAL SERVICE CONTACT INFORMATION & LIMITED WARRANTY …………
larm and Fault Codes ………………….………………...……
3-4
5
6
7
8
9
10
11
12
13-14
15-17
18
19
20
21
22
23
24
25
26
27
28
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OVERVIEW / NSF® TYPE / COMPLIANCE / WARNINGS / PRECAUTIONS / WIRING - PAGE 1 of 2
OVERVIEW
These dual functional cases are designed to
merchandise pre-chilled packaged bakery products at
5°C / 41°F or less and unpackaged bakery products
at ambient temperatures.
Cases should be installed and operated according to
this operating manual’s instructions to ensure proper
performance.
Improper use will void warranty.
NSF® 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 NSF® Type 1 Conditions (most cases): ambient
conditions are to be at 55% maximum humidity and
maximum temperatures of 75 °F [24 °C].
For NSF® Type 2 Conditions: ambient conditions are
to be at 60% maximum humidity and maximum
temperatures of 80 °F [27 °C].
This equipment MUST be installed in compliance with
all applicable NEC, federal, state and local
electrical and plumbing codes.
If unsure if unit is NSF® 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.
COMPLIANCE
WARNING
ELECTRICAL
HAZARD
WARNING
KEEP
HANDS
CLEAR
WARNING
HOT
SURFACE
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
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
Condenser Pan is Hot!
Disconnect or turn off unit and allow to cool
before cleaning or removing from case.
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OVERVIEW / NSF® TYPE / COMPLIANCE / WARNINGS / PRECAUTIONS / WIRING - PAGE 2 of 2
PRECAUTIONS
Following are important precautions to prevent
damage to unit or merchandise.
Please read carefully!
See previous page for specifics on OVERVIEW, NSF
TYPE, COMPLIANCE and WARNINGS.
CAUTION! LAMP REPLACEMENT GUIDELINES
LED lamps reflect specific size, shape and overall design.
CAUTION
Any replacements must meet factory specifications.
Fluorescent lamps have been treated to resist breakage and
must be replaced with similarly treated lamps.
CAUTION! GFCI BREAKER USE RECOMMENDATION
If N.E.C. (National Electric Code) or your local code
requires GFCI (Ground Fault Circuit Interrupter) protection,
the use of a GFCI breaker
WIRING DIAGRAM
Each case has its own wiring diagram folded and in
its own packet.
Wiring diagram placement may vary; it may be
placed near ballast box, field wiring box, raceway
cover, or other related location.
is strongly recommended.
CAUTION
CAUTION! ADVERSE CONDITIONS / SPACING ISSUES
Performance issues caused by adverse conditions are NOT covered
by warranty.
End panels must be tightly joined or kept at least 6-inches away from
any structure to prevent condensation.
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.).
Tile floors, low ceilings or small rooms will increase noise level.
Whisper Cool compressor blanket or remote unit may resolve noise
level issues.
Keep at least 8-inch clearance above unit for air discharge
(self-contained units only).
CAUTION! CHECK CONDENSATE PAN POSITION AND PLUG
Water on flooring can cause extensive damage!
Condensate pan MUST BE positioned directly under condensate drain.
Condensate pan plug MUST BE securely plugged into receptacle.
Before powering up unit, check the following:
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Page 5
START-UP AND OPERATION
Merchandiser Start-Up
Do not use an extension cord with this appliance.
Do not operate this equipment with a damaged
cord, plug or outlet.
Insure the main power switch is off.
Plug cord into a certified 110V electrical outlet
with ground.
Turn main power on.
Remove upper front panel (See maintenance
for panel removal). Switch is on the right side
of case.
Coil fan should turn on.
From inside of the case, check for discharge air
from front baffle, to confirm that the fans are
functioning properly.
When the case is in a start-up mode or has been
idle for a long period of time, the unit will require
75-minutes running time to pull-down temperature.
Turn lights on.
Light switch is a rocker type on the under right
side of the top light.
The 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.
It is recommended that the self-contained
refrigerated cases maintain front and rear airflow
clearance of approximately twelve inches.
Obstruction or restriction of air can void warranty.
Note: Case temperature is set at the factory, as
determined by the case size.
Temperature is controlled by a thermostat.
If a temperature setting change is required,
refer to the instructions for the temperature
controller operating section of this manual.
Note: See serial label on case for set point.
Main Power Switch
Rocker Switch
ON
OFF
Light Switch
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MAINTENANCE FUNDAMENTALS
Removing the Front Panel
Lifting the panel from lower edge upward
approximately a half inch into a channel lip,
disengages the support taps on the lower edges.
Pivot out lower edge approximately one inch
and lower panel to remove.
Removing the Front Grille
Lifting the grille upward approximately a half inch
disengages a top support flange and the support
taps on the back lower side of the grille from the
frame .
Pivot out lower edge and remove grille.
Removing the Rear Doors
Move the rear doors toward the center of the
case.
Individually lift each door up toward the top of
the case and pivot the bottom of the door out
from track.
Removing Interior Shelving:
Remove the rear doors.
Remove the glass or ABS shelving.
Remove the rear shelf support from brackets.
Remove shelf light from brackets and rotate to
facilitate maintenance.
Note: shelf light cannot be remove without
being disassembled.
Shelf brackets can not be removed.
Light Fixture
Removal of lamp:
Rotate lamp (1/4 turn) and remove bulb.
Installation of lamp:
Align pins with slot.
Insert pins into socket and rotate 1/4-turn to
secure pin contacts in socket.
Channel Lip
Upper Front Panel
Support Tabs
Support Flange
Support Tabs
Glass or ABS Shelves
Shelf Light
Front Grille
Support Rest
Rear Shelf Support
Sample Fluorescent Light Fixture
Shelf Brackets
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ELECTRICAL & REFRIGERATION FUNDAMENTALS
Electrical: Access and Connections
Warning, disconnect power before providing
maintenance and service to unit.
Ballast access
Remove 4 screws from the back of the top cap
to access electrical connections and ballasts.
Temperature & Defrost Control
The case temperature is set at the factory, as
determined by the case size. The temperature
is controlled by a thermostat. If a temperature
setting change is required, follow the
instructions for the Johnson Control® or
Carel® Controller in the technical information
section of this operating manual.
If service is required to the temperature
control unit, call Structural Concepts. This
maintenance should be performed by a
certified technician.
Ballast
Top Cap Rocker Switch
Temperature
Controller
Approximate Ballast
locations (illustration may
not be exactly as shown)
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Page 8
REFRIGERATION FUNDAMENTALS
Evaporator fan access
Remove lower decking. A finger hole is provided
to assist in lifting up and pulling out deck.
Expansion valve access
Remove lower decking. A finger hole is provided
to assist in lifting up and pulling out deck.
Remove fan shroud assembly.
Unplug the fan at the shroud support.
Remove four screw knobs from the fan
shroud.
Carefully remove shroud to avoid damage to
mirrors or front air deflector.
Refrigeration:
Access and Connections
Assembly or disassembly and servicing to
be accomplished by licensed refrigeration
contractor.
Refer to maintenance fundamentals for access.
Remove front panel.
Remove front grill.
Fan
Shroud
Lower Decking
Evaporator
Fan
Hot Gas Evaporator
Refrigerant Service Fittings
Front of Case
Carel Controller®
(or Johnson® Controller
Sight Glass
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Page 9
SERIAL LABEL LOCATION & INFORMATION LISTED / TECHNICAL INFO & SERVICE
Serial Label Location & Information Listed / Technical Information & Service
Serial labels are located near the electrical access on your case.
Serial labels contain electrical, temperature & refrigeration information, as well as regulatory
standards to which the case conforms.
For additional technical information and service, see the TECHNICAL SERVICE page in this
manual for instructions on contacting Structural Concepts’ Technical Service Department.
See image below for sample serial label.
Y
S
A
SA
M
P
L
MPLE
E
N
O
ON
L
L
Y
A
S
----- Sample Serial Label For Refrigerated Case -----
S
A
MP
S
LE
AM
O
LE
P
M
ON
P
LE ON
Y
L
N
L
Y
LY
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Page 10
CLEANING SCHEDULE [TO BE PERFORMED BY STORE PERSONN EL]
WARNING! TURN OFF POWER TO CASE BEFORE PERFORMIN G PREVENTIVE MAINTENANCE!
Cleaning Frequency Instructions
Case
Daily
Exterior
Daily
Daily To
Weekly
Weekly
Weekly
Case
Daily
Interior
Weekly
A. Magnetized Condenser
Weekly
Weekly
Coil Filter
Glass / Mirrors: Clean front glass, side glass, glass shelves, and mirrors with a
household or commercial glass cleaner.
Acrylic: Clean with a warm water and mild soap solution and soft cloth. Never use
ammonia-based cleaners (or regular glass cleaner) on acrylic.
Magnetized Condenser Coil Filter (Optional): Vacuum or brush with soft-bristled filter.
To remove grease and grime build-up, remove from case. Submerse in warm water and
soap solution. Rinse. Dry. Return to case. See Photo A below.
Condensing Coil: Remove base panel and condensing coil cover. Vacuum or brush
condenser coil with metal or fiber brush to remove dust and dirt. Be careful to avoid
damaging coil fins while cleaning!
Rear Sliding Doors and Door Track: Remove rear doors. Clean w/household or
commercial cleaner. Clean out door track with moist cloth.
Decks & Inserts: Wipe down and clean with mild soap, water & soft cloth.
Baffle: Remove from case. Clean with soft-bristled brush. See photos B - C - D below.
Crumb Drawer: Pull out and empty. Clean with moist cloth. See photo C below.
Decks & Inserts: Remove and clean with mild soap, water & soft cloth
D. Baffle (Enhancing
Refrigerating
B. Baffle (Preventing Refrigeration) &
Crumb Tray (shown not
pulled out)
C. Baffle (out of
case) & Crumb
Tray (pulled out)
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CLEANING SCHEDULE [TO BE PERFORMED BY TRAINED SERVICE PROVIDERS ONLY]
WARNING! TURN OFF POWER TO CASE BEFORE PERFORMIN G PREVENTIVE MAINTENANCE!
Maintenance Freq. Instructions
Case
Qtly
Exterior
Qtly
Case Interior Qtly
Qtly
Qtly
Condensing Coil: Using air pressure or an industrial strength vacuum, clean the
dust and dirt that may collect on the condenser coil. It may be necessary to use a
soft-bristled brush to loosen up caked dust and debris that may form on coil.
Under Case Cleaning: Once refrigeration package is clear of unit, vacuum under
case to remove all dust and dirt that may collect.
Tub, Coil and Drain: Remove evaporator fan panel [as shown in images #1 and 2
below] and clean tub, coil and drain with warm water and mild soap solution.
Remove any debris that may clog drain.
Compressor Area: Slide out from case. Wipe off dust & debris w/moist cloth.
Hot Gas Loop [or Electric Coil] Condensate Pan: Disconnect power. Slide out
refrigeration assembly. Use a de-scaling solution (such as CLR® that will prevent
corrosion, lime and rust) to thoroughly clean pan. Use wet /dry vacuum to remove
all residue. If necessary, wipe down with damp cloth.
Evaporative Wicking Material [Optional]: Lift up and off from support. Replace
with new evaporative wicking material.
Fan Blades, Shroud, Drain: Wipe down each blade and shroud with moist cloth.
Clean out drain. See images #1 and 2 below.
Qtly
Honeycomb: See PREVENTIVE MAINTENANCE - HONEYCOMB AIR
DIFFUSERS [TRAINED SERVICE PROVIDERS ONLY] section in this manual for
specifications.
Qtly
Use finger holes to lift up
Deck. Remove from case.
Upper and Lower Step Inserts: Remove from Case. Clean w/soap and water.
Image #1
Clean under Air Return Grille and Fan
Shroud Area with moist cloth. Remove drain
cleaning access door and clean drain.
Image #2
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PREVENTIVE MAINTENANCE - HONEYCOMB AIR DIFFUSERS [TRAINED SVC. PROVIDERS ONLY]
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. Remove entirely from case.
C
A
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.
F
B
Location of
Honeycomb Air
Diffuser
D
E
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TROUBLESHOOTING [TO BE PERFORMED BY STORE PERSONNEL] - PAGE 1 of 2
Product is Drying Out
Water on the Floor
Excessive Fan Noise
System is not Operating
Alarm is Flashing [or Sounding]
Digital Control Display is Blank
Fans Not Working
Check the relative humidity in the store.
Check that the drain is correctly positioned over condensate pan.
Check that condensate overflow pan is plugged in.
Check that drain and drain trap do not have debris in them.
Check that the case is aligned, level and plumb.
Check that the utility power is on.
Check that the MAIN power switch is on.
Check the circuit breaker box for tripped circuits.
See alarm and fault codes
Check that the MAIN power switch is on.
Check the circuit breaker box for tripped circuits.
Check that the MAIN power switch is on.
Case Lights Not Working
Note: If problems persist call Starbucks FASQ Desk.
Check that ALL of the lights are plugged in.
Check bulbs for proper installation and connection.
Check for burned out bulbs.
Clean dirt and dust from the bulbs to prevent flickering.
Check that light switch is in the on position.
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TROUBLESHOOTING [TO BE PERFORMED BY STORE PERSONNEL] - PAGE 2 of 2
Controller Display Flashing
Not Holding Temperature
Note: Keep product off front air grilles! Product displayed on
Condensing Unit Not Operating
If display is flashing, refer to Carel® Temperature Controller Section
in this manual.
If a large amount of warm product was added to the case, it will take
time for the temperature to adjust. Unit needs pre-chilled product.
The temperature will change during defrost cycle but will return to
normal when compressor turns on.
Check to see if the condenser coil has been cleaned.
Check that the case is not in the sun or near a heat or
air-conditioning vent. See OVERVIEW / NSF® TYPE /
COMPLIANCE / WARNINGS / PRECAUTIONS / WIRING section in
this manual for specifics.
Check air grilles for obstruction and remove.
Ensure that front air grilles are not obstructed by product or other
décor.
front air grilles will cause case to run warm and will negate
warranty.
Check that the main power switch is turned on.
Controller may be in defrost mode. Compressor cycling on and off is
a normal condition. See Carel® Temperature Controller Section in
this manual.
Check if the case is on and the control display is blank. If blank, call
Starbucks FASQ Desk.
Note: If problems persist call Starbucks FASQ Desk.
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TROUBLESHOOTING [TO BE PERFORMED BY TRAINED SERVICE PROVIDERS ONLY] - PAGE 1 of 3
CONDITION TROUBLESHOOTING
Water Is On The
Floor
Caution! Disruption of power can cause water to overflow pan and seep onto
flooring causing damage! Check that power to case is constant. Until power is
restored, follow these procedures:
Use wet-dry vacuum (or mop & bucket) to remove standing water.
Use ‘catch pans’ for water to drainage. Swap out regularly until evaporation of
case is complete (or until power is restored).
When power to case is restored, evaporator pan should function properly and
water will no longer overflow onto flooring.
Check that the drain trap is free of debris.
Check that the drain hose is correctly positioned over condensate pan (or floor drain,
for remote units).
Check store conditions. To prevent condensation in NSF® Type 1 environments,
maximum conditions are to be 55% humidity / 75° Fahrenheit. For NSF® Type 2,
maximum conditions are to be 60% humidity / 80° Fahrenheit. See serial label (at
case rear near main power switch) for NSF® Type of your case.
Check that evaporator pan is properly plugged in or connected.
Caution! Wicking material (hot gas loop condensate system only) may be dirty or
worn and need replacement.
Slide refrigeration system out from under unit.
After refrigeration system has been carefully slid out from under unit, replace
wicking material with new. If wicking material is not available, contact Structural
Concepts®. See toll-free number at last page of this operating manual.
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TROUBLESHOOTING [TO BE PERFORMED BY TRAINED SERVICE PROVIDERS ONLY] - PAGE 2 of 3
CONDITION TROUBLESHOOTING
Fan Emits Excessive
Noise
Fans Are Not Working
Check that the case is aligned, level and plumb.
Check evaporator fan for cleanliness.
Unplug/power off fan motors. Check motor shaft for 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.
Check that the MAIN power switch is on.
Check that fans are plugged in at the fan shroud.
Digital Control Display
Is Blank
System Not Operating
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 the MAIN power switch is on.
Check the circuit breaker box for tripped circuits.
Check that the utility power is on.
Check that the MAIN power switch is on.
Check the circuit breaker box for tripped circuits.
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TROUBLESHOOTING [TO BE PERFORMED BY TRAINED SERVICE PROVIDERS ONLY] - PAGE 3 of 3
CONDITION TROUBLESHOOTING
Case Lights Are Not
Working
Control Display Is
Flashing
Case Is Not Holding
Temperature
Check that light switch is on. See START-UP AND OPERATION in this manual for
location.
Check that ALL of the light cords and plugs are properly connected. See
MAINTENANCE FUNDAMENTALS section in this manual.
Check voltage at ballast (or driver). If voltage is entering but not exiting, ballast (or
driver) may be faulty.
See your case’s serial label for your model’s specified settings. See SERIAL
LABEL LOCATION & INFORMATION LISTED / TECH INFO & SERVICE for
label location, etc.
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.
Temperature changes during defrost mode but will return to normal. Fourth LED
will indicate defrost cycle in progress.
Check that case is not in sun or near a heat or air-conditioning vent. See
OVERVIEW / NSF® TYPE / COMPLIANCE / WARNINGS / PRECAUTIONS /
WIRING section in manual for adverse conditions/spacing issue parameters.
Condensing Unit Is
Not Operating
If case is located near front doors, temperature fluctuation can hinder unit’s ability
to maintain temperature. See OVERVIEW / NSF® TYPE / COMPLIANCE /
WARNINGS / PRECAUTIONS / WIRING section in manual for adverse conditions/
spacing issue parameters.
Check that magnetized condenser coil air filter (attached to rear grille) has been
cleaned. See GENERAL CLEANING [TO BE PERFORMED BY STORE
PERSONNEL] section in operating manual for instructions.
Check that condenser coil has been cleaned.
Check air return grilles for obstructions.
Check sight glass for flashing and/or low charge.
Check Set Point Temperature; it may be adjusted too high.
Check that the power is turned on.
Determine if temperature controller settings are properly set. See your case’s
serial label for your model’s specified settings. See SERIAL LABEL LOCATION &
INFORMATION LISTED / TECH INFO & SERVICE section in manual for label
location, etc.
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Page 18
TROUBLESHOOTING [BY TRAINED SERVICE PROVIDERS ONLY] - 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.
Check to verify that a non-condensable is not in the system.
Check that Liquid Line Drier is not plugged.
Check that there are no close-offs around Condensing Coil.
Check Set Point Temp.; it may be adjusted too high.
Head Pressure Too
Low
Check System Operating Temperatures.
Check that Store Ambient Temperature isn’t above maximum allowed. See
Overview and Warnings Section.
Check that Refrigerant Charge isn’t too low.
Check that Suction Pressure isn’t too low.
Check to verify that Compressor Valves aren’t bad.
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Page 19
TROUBLESHOOTING [BY TRAINED SERVICE PROVIDERS ONLY] - EVAPORATOR SYSTEM
CONDITION TROUBLESHOOTING
Low Suction Pressure
Check that the Refrigerant doesn’t have a low charge.
Check that Expansion Valve (TXV Valve) isn’t restricted.
Check that Liquid Line or Filter isn’t restricted.
Check that Evaporator Motors are working.
Check that High Superheat doesn’t need adjusting.
Check that the Thermostatic Element charge isn’t depleted.
Check that there is air no seepage of air around Condensing Coil.
Check that the Coil is not iced up.
High Suction Pressure
Check that Refrigerant Charge isn’t too high.
Check that Compressor Valves aren’t bad.
Check that the Cooling Load isn’t high.
Check that Superheat Adjustment isn’t low.
Check TXV Bulb Installation
a. Poor thermal contact.
b. Warm location.
Check Compressor: Low capacity means it is undersized for its application.
19
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ILLUSTRATED PARTS BREAKDOWN - MODEL COU2757R & COU2757R.3748
NOTE: DUE TO OPTIONS AND FEATURES THAT MAY BE CHOSEN
BY CUSTOMER, ILLUSTRATED PARTS BREAKDOWN SHOWN
MAY NOT EXACTLY REFLECT YOUR PARTICULAR MODEL.
20
21
22
23
1
2
3
4
5
6
7
8
9
10
11
12
19
13
14
15
18
16
17
20
Page 21
PARTS LIST - MODEL COU2757R & COU2757R.3748
1 Top Cap 13 Front Panel
2 Rocker Switch 14 Bumper Insert
3 End Glass 15 Front Grille
4 Shelf, Glass 16 Bumper End Cap
5 Curved Front Glass 17 Temperature Controller
6 Shelf Light 18 Fan Motor, Evaporator
7 Lamp Bulb 19 Deck Pan
8 ABS Decks 20 Rear Grille
9 End Panel 21 Rear Door
10 End Panel Mirror 22 Rear Rack Support
11 Air Deflector Glass 23 Ballast
12 Single Pole Switch
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GENERAL LAYOUT OF CONDENSER PACKAGE
Note: Condenser Package Layout Shown Below is Used Primarily on
Model COU2757R [“B1-Temp”] Units and Model COU2765R [“Mini-B” ] Units.
Illustration Shown May Not Exactly Reflect Every Component of Your Unit.
Condenser Coils
Condenser Fan Motor,
Fan Blades and Guard
Receiver
Evaporator Pan
[and Hot Gas Loop]
Compressor
Compressor
Electrical Box
22
Sight
Glass
Filter Dryer
Page 23
Read And Save These Instructions - Page 1 of 3
Integrated Electronic
Microprocessor Controller
Programming The Instrument
To Modify The Setpoint
Press and hold the “SET” key for at least 1 second.
Set
Prg
mute
Set
▲
aux
def
▼
▲
aux
3. Quickly press and release the “SET” key again.
Set
To Modify Defrost, Differential, Other Parameters
Prg
mute
2. Confirm by pressing “SET” key.
Set
▲
aux
4. Press “SET” to modify this selected parameter.
Set
▲
aux
Set
7. Press & hold the “Prg” key for at least 5 seconds
Prg
to save changes. This action will also mute the
mute
audible alarm (buzzer) & deactivate the alarm relay.
2. Use arrow keys ▲ ▼ on temperature
def
controller to increase (or decrease) the
▼
setpoint.
1. Press & hold “Prg” & “SET” keys together
for five (5) seconds; display will flash “0”,
Set
representing password prompt.
3. Press ▲ or ▼ to reach the
def
category to be modified.
▼
5. Increase or decrease the value using
def
the ▲ or ▼ button respectively.
▼
6. Press the “SET” key to temporarily save the new
value and return to the display of the parameter.
Prg
mute
Set
▲
aux
Set
▲
aux
Set
Prg
mute
Warning! Save Your Parameter Settings!
1. To store the new parameter values, PRESS and HOLD the “Prg” key for at least 5 seconds.
2. All modifications made to parameters will be lost if you do NOT press a button within 60 seconds. Should
this “timeout” occur, normal operational settings (prior to modifications being made) will resume.
3. If the instrument is switched off before pressing the “Prg” key, all modifications to parameters will be lost.
How To Change Reading From
Fahrenheit (°F) To Celsius (°C)
1. Press and hold “Prg” and “SET” keys
Set
together for at least 5 seconds; display
2. Confirm by pressing “SET” key.
4. Press “SET” to modify this selected
parameter.
will show “0” (password prompt).
def
3. Press ▲ or ▼ until reaching the
parameter “/ 5”.
▼
5. Press ▲ or ▼ to change value to
def
desired setting: “0” for Celsius (°C) or
▼
“1” for Fahrenheit (°F).
6. Press “SET” key to temporarily save the
new value and return to the display of the
parameter.
7. Press & hold “Prg” key for at least 5
seconds to save changes.
will automatically convert to new scale. No
conversion is required.
Note! All values
To Activate Manual Defrost
def
Press and hold “def” key for at least 5 seconds.
▼
To Activate / Deactivate Auxiliary Output
▲
Press and hold the “aux” key for 1 second.
aux
23
Prg
mute
To Reset Any Alarms With Manual
▲
Reset
aux
Press and hold the “Prg” and “aux”
key for at least 1 second.
Oper Manuals - PUB\Templates\Carel Controller\Carel Controller IR33.pub
This data derived from Carel Material: ir33 +030220441 - rel. 2.0 - 01.05.2006
Page 24
Read And Save These Instructions - Page 2 of 3
Integrated Electronic
Microprocessor Controller
User Interface - Display
Summary Table of Alarm and Signals: Display, Buzzer and Relay
reset alarms w/manual reset / reset HACCP alarms / reset temp. monitoring
24
Page 25
Read And Save These Instructions - Page 3 of 3
Integrated Electronic
Microprocessor Controller
Summary Table of Operating Parameters
CODE PARAMETER UOM* TYPE MINIMUM MAXIMUM DEFAULT
/5
Select Celsius (°C) or Fahrenheit (°F)
flag C 0 1
/c1 Calibration of probe 1 °C/°F C -20 20
/c2 Calibration of probe 2 °C/°F C -20 20
St Temperature set point °C/°F F r2 r1
rd Control delta °C/°F F 20 0.1
dl Interval between defrosts hours F 0 250
dt1 End defrost temperature, evaporator °C/°F F -50 200
dP1 Maximum defrost duration, evaporator min F 1 250
d6 Display on hold during defrost - C 0 2
For Case
Specific
Defaults
See Serial
Label
Located
Near
Electrical
Access
On Your
Case.
For
Additional
Technical
Information
Call
Structural
Concepts
Technical
Service
Dept. at
1(800)
433.9489
dd Dripping time after defrost min F 0 15
d/1 Display of defrost probe 1 °C/°F F - -
* Unit Of Measure
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JOHNSON CONTROL - MR3CCUHV
Alarm and Fault Codes
These alarm and fault codes will flash on the display when the control detects the following faults:
Table 1: Error Codes and Status
Error Code System Status
F1
Indicates an open or shorted temperature sensor
F2
Indicates an open or shorted evaporator sensor
A1
Indicates that the digital input was open for longer
than the time delay (id) and digital input (iF) Option
1 is selected
A2
Digital input closed for longer than time delay (id)
and digital input (iF) Option 2 is selected
A3
Digital input open for longer than the time delay (id)
and digital input (iF) Option 3 selected
HI
Temperature has exceeded the high temperature
alarm value (AH)
LO
Temperature has fallen below the low temperature
alarm value (AL)
EE
Program failure
Alarm output is on. Compressor runs according
to the sensor failure mode selected (parameter
SF).
Cycle power to reset control.
Alarm output is on. Defrost cycle is controlled
by parameters di (defrost initiation) and dd
(defrost duration). Correct problem to reset control.
Compressor output is off. Alarm output is on.
Correct problem to reset control.
Alarm output is on. Correct problem to reset
control.
Fan output is off. Alarm output is on. Correct
problem to reset control.
Alarm output is on. Correct problem to reset
control.
Alarm output is on. Correct problem to reset
control.
Alarm output is on. Other outputs are off. Replace control.
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Page 27
JOHNSON CONTROL - MR3CCUHV
Manual
Defrost
Button
Enter
Button
Fan
Status
LED
Defrost
Status
LED
Compressor
Status
LED
Up
Button
Down
Button
To lock and unlock the unit for programming
Press the Enter, Up, and
Down buttons in sequence
and hold them all down until
“- - -” is displayed. Hold for
about 10 seconds until the
current temperature is displayed. This toggles the keypad between locked and
unlocked.
To change the setpoint
1. Hold the Enter button
down for 3 seconds.
The display will change
to show the setpoint.
Release the Enter button.
2. Press the Up or Down
button until you reach
the new setpoint.
3. Press the Enter button
to save the new setpoint.
Note: If the Enter button is not pressed after selecting the new setpoint, the new setpoint is not saved,
and the control will revert to the original setpoint.
To begin a Manual Defrost Cycle
Hold the Defrost button
down for 3 seconds.
To begin a Deep Freeze Cycle
Press the Enter and Up buttons in sequence and hold
both for 5 seconds. The
compressor status LED will
light.
To program values other than the setpoint
A parameter settings reference page is included in
Table 3 of this bulletin. Filling out the parameter settings before programming may be helpful.
1. Hold the Enter button
down for about
10 seconds. The display
will change to HY.
2. Press the Up or Down
button until the desired
parameter is displayed.
3. Press the Enter button.
The parameter’s current
value is displayed.
4. Press the Up or Down
button until the desired
value is shown.
5. Press the Enter button
to save the new value.
After 10 seconds of inactivity, the display will
return to its normal function.
Note: If the Enter button is not pressed after selecting the new value, the new value is not saved, and the
control will revert to using the previous value.
To run the Self-test procedure
Press the Up and Down buttons in sequence, and
hold for 5 seconds.
IMPORTANT: Disconnect loads before beginning
Self-test procedure. Cycle power to resume normal
operation.
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Page 28
STARBUCKS TECHNICAL SERVICE CONTACT INFORMATION & LIMITED WARRANTY
Call Starbucks FASQ Desk
For All Technical Service Issues
Starbucks Limited Warranty
All sales by Structural Concepts Corporation (SCC) are subject to the following limited warranty. “Goods” refers to the product or products being sold by SCC.
Warranty Scope: Warranty is for equipment sold ONLY to Starbucks Corporation in the United States, Canada, Mexico and Puerto Rico. Equipment sold elsewhere may carry
modified warranty.
Warranty; Remedies; Limitations. SCC warrants that if any Goods are found by an authorized representative of SCC not to be of good material or workmanship within one
year of the date of shipments SCC will, at its option after inspection by an authorized representative, replace any defective Good or pay the reasonable cost of replacement for
any such defective Goods, provided that written notice of the defect is given to SCC within 30 days of the appearance of such defect. If notice is not given within such period, any
claim for breach of warranty shall be conclusively deemed to have been waived and SCC shall not be liable under this warranty. If SCC is unable to repair or replace the defective
Goods, SCC shall issue a credit to the Purchaser for all or part of the purchase price, as SCC shall determine. The replacement or payment in the manner described above shall
be the sole and exclusive remedy of Purchaser for a breach of this warranty. If any Goods are defective or fail to conform to this warranty, SCC will furnish instructions for their
disposition. No Goods shall be returned to SCC without its prior consent.
SCC’s liability for any defect in the Goods shall not exceed the purchase price of the Goods. SCC SHALL HAVE NO LIABILITY TO PURCHASE FOR CONSEQUENTIAL
DAMAGES OF ANY KIND WHATSOEVER, INCLUDING, BUT NOT LIMITED TO, PERSONAL INJURY, PROPERTY DAMAGE, LOST PROFITS, OR OTHER ECONOMIC
INJURY DUE TO ANY DEFECT IN THE GOODS OR ANY BREACH OF SCC, SCC SHALL NOT BE LIABLE TO THE PURCHASER IN TORT FOR ANY NEGLIGENT DESIGN
OR MANUFACTURE OF THE GOODS, OR FOR THE OMISSION OF ANY WARNING THEREFROM.
SCC shall have no obligation or liability under this warranty for claims arising from any other party’s (including Purchaser’s) negligence or misuse of the Goods or environmental
conditions. This warranty does not apply to any claim or damage arising for or cause by improper storage, handling, installation, maintenance, or from fire, flood, accidents,
structural defects, building settlement or movement, acts of God, or other causes beyond SCC’s control.
Except as expressly stated herein, SCC makes no warranty, express, implied, statutory or otherwise as to any parts or goods not manufactured by SCC. SCC shall warrant such
parts or Goods only (I) against such defects, (II) for such periods of time, and (III) with such remedies, as are expressly warranted by the manufacturer of such parts of Goods.
Notwithstanding the foregoing, any warranty with respect to such parts of Goods and any remedies available as a result of a breach thereof shall be subject to all of the
procedures, limitations, and exclusions set forth herein.
THE WARRANTIES HEREIN ARE IN LIEU OF ALL WARRANTIES, EXPRESS, IMPLIED, STATUTORY, OR OTHERWISE. IN PARTICULAR, SCC MAKES NO W ARRANTY
OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.
No representative, agent or dealer of SCC has authority to modify, expand, or ext end this Warranty, to waive any of the limitations or exclusions, or to make any different or
additional warranties with respect to Goods.
Period of Limitations. No claim, suit or other proceeding may be brought by Purchaser for any breach of the foregoing warranty or this Agreement by SCC or in any way arising
out of this Agreement or relating to the Goods after one year from the date of the breach. In the interpretation of this limitation on action for a breach by SCC, it is expressly
agreed that there are no warranties of future performance of the goods that would extend that period of limitation herein contained for bringing an action.
Indemnifications. Purchaser agrees to indemnify, hold harmless, and defend SCC if so requested, from any and all liabilities, as defined herein, suffered, or incurred by SCC as
a result of, or in connection with, any act, omission, or use of the Goods by Purchaser, its employees or customers, or any breach of this Agreement by Purchaser. Liabilities
shall include all costs, claims, damages, judgments, and expenses (including reasonable attorney fees and costs).
Remedies of SCC. SCC’s rights and remedies shall be cumulative and may be exercised from time to time. In a proceeding or action relating to the breach of this Agreement by
Purchaser, Purchaser shall reimburse SCC for reasonable costs and attorney’s fees incurred by SCC. No waiver by SCC of any breach of Purchaser shall be effective unless in
writing nor operate as a waiver of any other breach of the same term thereafter. SCC shall not lose any right because it has not exercised it in the past.
Applicable Law. This Agreement is made in Michigan and shall be governed by and interpreted according to Michigan law. Any lawsuit arising out of this Agreement or the Goods
may be handled by a federal or state court whose district includes Muskegon County, Michigan, and Purchaser consents that such court shall have personal jurisdiction over
Purchaser.
Miscellaneous. If any provision of this Agreement is found to be invalid or unenforceable under any law, the provision shall be ineffective to that extent and for the duration of
the illegality, but the remaining provisions shall be unaffected. Purchaser shall not assign any of its rights nor delegate any of this obligations under this Agreement without prior
written of SCC. This Agreement shall be binding upon and inure to the benefit of SCC and Purchaser and each of their legal representatives, successors and assigns.
SCC warrants its products to be free of defects in materials and workmanship under normal use and service for a period of one (1) year.
This warranty is extended only to the original purchaser for use of the Goods. It does not cover normal wear parts such as plastic tongs, tong holders, tong cables, bag holders,
or acrylic dividers.
General Conditions. All service labor and/or parts charges are subject to approval by SCC. Contact the Customer Service Department in writing or call 1.800.433.9489.
All claims must contain the following information: (1) model & serial code number of equipment; (2) the date and place of installation; (3) the name and address of the agency
which performed the installation; (4) the date of the equipment failure; and (5) a complete description of the equipment failure and all circumstances relating to that failure.
Once the claim has been determined to be a true warranty claim by SCC’s Customer Service Department, the following procedure will be taken: (1) replacement parts will be sent
at no charge from SCC on a freight prepaid basis; (2) reimbursement for service labor will be paid if the following conditions have been met - (a) prior approval of service agency
was awarded from the Customer Service Department; and (b) an itemized statement of all labor charges incurred is received by the Customer Service Department. The cost of
the service labor reimbursement will be based on straight time rates and reasonable time for the repair of the defect.
If problems occur with any compressor, notify SCC’s Customer Service Department immediately. Any attempt to repair or alter the unit without prior consent from the Customer
Service Department may render any warranty claim null and void. This warranty and protection plan does not apply to any condensing unit or any part thereof which has been
subject to accident, negligence, misuse, or abuse, or which has not been operated in accordance with the manufacturer’s recommendations or if the serial number of the unit has
been altered, defaced, or removed.
Limit of Liability. The limit of liability of SCC toward the exchange cost of the original compressor motor is one year parts and labor. A motor-compressor replaced during the
warranty shall not exceed manufacturer's current established wholesaler’s exchange price.
28
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