Structural Concepts Oasis CO2739R User manual

PN 99399
SELF-CONTAINED REFRIGERATED SERVICE/SELF-SERVICE MODEL CO2739R
Rev D Date: 4.10.2012
Model CO2739R……………...27 1/2”L* x 39”H x 33”D
*Includes end panels.
I:\Oper Manuals\Oasis\CO27[L]R_99399.pub
888 E. Porter Road · Muskegon, MI 49441 Phone: [phone] Fax: [phone] www.structuralconcepts.com
READ AND SAVE THESE INSTRUCTIONS
M O B I L E S E R I E S
INSTALLATION AND
OPERATING MANUAL

2
TABLE OF CONTENTS
OVERVIEW / TYPE / COMPLIANCE / WARNINGS / PRECAUTIONS / PLUGS / WIRING …….....…..
START-UP AND OPERATION ….…………...…...…..…………………………….…………….…………
MAINTENANCE FUNDAMENTALS: FRONT PANEL / FRONT GRILLE / LIGHT FIXTURE ..……….…
MAINTENANCE FUNDAMENTALS, CONTINUED: HONEYCOMB AIR DIFFUSERS ………………….
ELECTRICAL & REFRIGERATION FUNDAMENTALS ………………………...……………….………….
REFRIGERATION FUNDAMENTALS ………………………………………………………………………..
SERIAL LABEL LOCATION & INFORMATION LISTED / TECH INFO & SERVICE ……………...…….
TROUBLESHOOTING ……...………………………………………………………………………...………..
ILLISTRATED PARTS BREAKDOWN …………...……………...……………………………………………
PARTS LIST ……….……….……………………………………..……………………………………...………
CLEANING SCHEDULE ….....…………………………………………………...…………….…….….....…..
CAREL® TEMPERATURE CONTROLLER INFORMATION ……….…………………….………………..
JOHNSON CONTROL® - MR3CCUHV Alarm and Fault Codes ……….…………….…………...……
JOHNSON CONTROL® - MR3CCUHV Programming Control Module ……….………..…………..……
SCC TECHNICAL SERVICE CONTACT INFORMATION & WARRANTY INFORMATION ..…….….....
3-4
5
6
7
8
9
10
11-12
13
14
15
16-18
19
20
21

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OVERVIEW
 These Structural Concepts merchandisers are
designed to merchandise pre-chilled packaged
products at 41 °F [5 °C] or less product temperatures.
 Cases should be installed and operated according to
this operating manual’s instructions to insure 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 Type 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 sheet 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
Condenser Pan is Hot!
Disconnect 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 / PLUGS / WIRING - PAGE 1 of 2

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OVERVIEW / TYPE / COMPLIANCE / WARNINGS / PRECAUTIONS / PLUGS / WIRING - PAGE 2 of 2
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 is strongly recommended.
CAUTION! ADVERSE CONDITIONS / SPACING ISSUES
 Performance issues caused by adverse conditions are NOT warranted.
 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 increase noise level. Whisper
Cool compressor blankets or remote units resolve noise level issues.
 Keep at least 8-inch clearance above unit for air discharge
(self-contained units only).
CAUTION
CAUTION! LAMP REPLACEMENT GUIDELINES
LED lamps reflect specific size, shape and overall design.
Any replacements must meet factory specifications.
Fluorescent lamps have been treated to resist breakage and
must be replaced with similarly treated lamps.
CAUTION
PRECAUTIONS
 This sheet contains important precautions to prevent
damage to unit or merchandise.
 Please 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 may vary; it may be placed
near ballast box, field wiring box, raceway cover, or
other related location.
CAUTION! CHECK EVAPORATOR PAN POSITION AND PLUG
Water on flooring can cause extensive damage!
Before powering up unit, check the following:
 Evaporator pan MUST BE positioned directly under condensate drain.
 Evaporator pan plug MUST BE securely plugged into receptacle.
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.

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 120V 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 in order to pull-down
temperature.
 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 six inches.
 Obstruction or restriction of air can void
warranty.
 The interior case temperature reaches 2 °C to
5 °C / 35 °F to 41 °F.
 Note: 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, refer to the instructions for the
Temperature Control Programming operating
section of this manual.
 Note: Set point should be 4.5 °C / 40 °F. This
will maintain the product temperature range.
Settings lower than 4.5 °C / 40 °F can cause
food items to freeze.
Main Power Switch

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MAINTENANCE FUNDAMENTALS: FRONT PANEL / FRONT GRILLE / LIGHT FIXTURE
1. 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.
2. 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.
3. Light Fixture
Removal of lamp:
 Rotate lamp (1/4 turn) either direction to
disengage (upper or lower) pins/contacts from
lamp mounting sockets.
 Remove bulb buy applying even pressure from the
back side at the bulb ends and pulling the
remaining contact from the sockets.
Installation of lamp:
 Align pins with slot.
 Insert pins into socket by rotating the bulb 1/4 turn
to secure either the (upper or lower) pined
contacts into the sockets.
 Rotate the remaining bulb contacts (1/4 turn) into
the remaining lamp mounting socket contacts.
Channel Lip
Support Tabs
Upper Front Panel
Front Grille
Support Rest
Support Tabs
Support Flange
Lamp Pins
Light Socket Light Fixture

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MAINTENANCE FUNDAMENTALS, CONTINUED: HONEYCOMB AIR DIFFUSERS
Preventive maintenance should be performed
every 30 days unless conditions warrant a more
frequent replacement cycle.
Honeycomb Air Diffuser Removal
Honeycomb is located in discharge air duct.
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. Pry downward and away from honeycomb retainer.
 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 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.
A
B
C
D
E
F
Note: Model features and options may vary.
Honeycomb
Air Diffuser

8
ELECTRICAL & REFRIGERATION FUNDAMENTALS
1. Electrical: Access and Connections
Warning, disconnect power before providing
maintenance and service to unit.
2. Light Ballast Access
 Remove three screws from the rear wire
channel.
 Remove four screws from the rear grille.
3. Honeycomb Air Diffuser Removal
 Obtain a nonmetallic device of suitable
strength such as a ballpoint pen.
 Use care not to remove the heating wire
that prevents condensation on the lamp
assembly.
 Wedge the instrument between the
honeycomb and the top cap closure/end
panel.
 Apply pressure to collapse the honeycomb
and pry downward and away from the
honeycomb retainer.
 Pull honeycomb out fully buy grasping with
fingers and pulling downward.
4. Honeycomb Air Diffuser Installation
 Insert honeycomb up into top retainer first.
 Apply suitable pressure to collapse the
honeycomb up into lower the honeycomb
retainer.
Apply Pressure to begin
removal of Honeycomb.
Honeycomb Retainers
Honeycomb
Rear Grille
Wire Channel
Ballast

9
REFRIGERATION FUNDAMENTALS
1. 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
Temperature Control Programming Steps 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.
2. Evaporator Fan Access
 Remove lower decking. A finger hole is provided to
assist in lifting up and pulling out deck.
3. 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.
4. 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 grille.
Front of Case
Sight Glass
Refrigerant Service Fittings
Hot Gas Evaporator
Temp. Controller
Lower Decking
Evaporator Fan
Fan shroud

10
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 images below for samples of both refrigerated and non-refrigerated serial labels.
----- Sample Serial Label For Refrigerated Case -----
----- Sample Serial Label For Non-Refrigerated Case -----
SAMPLE ONLY
SAMPLEONLY
SAMPLE ONLY
SAMPLE ONLY
SAMPLE ONLY
SAMPLE ONLY

11
Alarm Going Off See alarm and fault codes of temperature controller.
Product is Drying Out Check the relative humidity in the store.
Water on the Floor Check the drain trap is free of debris.
Check that the condenser hot gas evaporator for
cleanliness.
Excessive Fan Noise Check that the case is aligned, level and plumb.
Check that nothing is obstructing the blade rotation.
Check that the fan shroud is properly secured.
System is not Operating Check that the utility power is on.
Check that the MAIN power switch is on.
Check the circuit breaker box for tripped circuits.
Temperature Controller Has No Illumination Check connections on power supply contactor board.
Check fuse on power supply contactor board.
Fans Not Working Check that the power is on.
Check that fans are plugged in at the fan shroud.
Faulty motor.
Case Lights Not Working Check bulbs for proper installation and connection.
Check for burned out bulbs.
Clean dirt and dust from the bulbs to prevent flickering.
Faulty ballast.
TROUBLESHOOTING

12
Not Holding Temperature If a large amount of warm product was added to the case, it will take time for
the temperature to adjust.
The temperature will change during defrost mode but will return to normal.
Check that the case is not in the sun or near a heat or air-conditioning vent.
Case may be located too near store’s outside doors.
TROUBLESHOOTING

13
ILLUSTRATED PARTS BREAKDOWN
4
8
2
6
7
15
13
5
3
14 9
1
17
12
11
10
16

14
PARTS LIST
1 Top Board 10 Light Ballast
2 End Panel 11 Wire Channel
3 End Panel Mirror 12 Rear Grille
4 Air Deflector Glass 13 Temperature Controller
5 Single Pole Switch 14 Fan Motor, Evaporator
6 Front Panel 15 Deck Pan
7 Bumper Insert 16 Lamp Bulb
8 Front Grille 17 Honeycomb
9 Bumper End Cap

15
Cleaning Daily Weekly Monthly Task
Clean Case Exterior X The acrylic must be cleaned with a mild soap and
water solution and a soft cloth. Never use a
household cleaner on acrylic.
Clean Case Interior X Clean glass shelves and mirrors with a household or
commercial glass cleaner. The deck can be cleaned
with a warm soap and water solution.
X Remove the deck and clean with soap and water.
X Remove rear doors and clean with a household or
commercial cleaner.
X
Vacuum tub under deck or soap and water if
necessary. To flush out the tub, disconnect power to
the case. Remove the ABS deck and the fan shroud.
Note: Be sure to plug fans back in after cleaning and
before installing decks.
X Keep drain clean and free of debris which could clog
the drain and rob the case of needed refrigeration.
Clean Condensing Coil X Vacuum grille area on back of case.
X Using air pressure if available, or an industrial strength
vacuum, clean the dust and dirt that collects on the
condenser coil.
CLEANING SCHEDULE

16
Integrated Electronic
Microprocessor Controller
Read And Save These Instructions - Page 1 of 3
Programming The Instrument
To Modify The Setpoint
Press and hold the “SET” key for at least 1 second.
2. Use arrow keys ▲▼on temperature
controller to increase (or decrease) the
setpoint.
3. Quickly press and release the “SET” key again.
To Modify Defrost, Differential, Other Parameters
1. Press & hold “Prg” & “SET” keys together
for five (5) seconds; display will flash “0”,
representing password prompt.
2. Confirm by pressing “SET” key.
3. Press ▲or ▼to reach the
category to be modified.
4. Press “SET” to modify this selected parameter.
5. Increase or decrease the value using
the ▲or ▼button respectively.
6. Press the “SET” key to temporarily save the new
value and return to the display of the parameter.
7. Press & hold the “Prg” key for at least 5 seconds
to save changes. This action will also mute the
audible alarm (buzzer) & deactivate the alarm relay.
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.
Set
Set
▲
aux
Prg
mute
def
▼
Prg
mute
Set
Set
def
▼
Set
▲
aux
▲
aux def
▼
Set
Prg
mute
Oper Manuals - PUB\Templates\Carel Controller\Carel Controller IR33.pub
This data derived from Carel Material: ir33 +030220441 - rel. 2.0 - 01.05.2006
How To Change Reading From
Fahrenheit (°F) To Celsius (°C)
1. Press and hold “Prg” and “SET” keys
together for at least 5 seconds; display
will show “0” (password prompt).
2. Confirm by pressing “SET” key.
3. Press ▲or ▼until reaching the
parameter “/ 5”.
4. Press “SET” to modify this selected
parameter.
5. Press ▲or ▼to change value to
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. Note! All values
will automatically convert to new scale. No
conversion is required.
Prg
mute
Set
Set
def
▼
▲
aux
Set
▲
aux def
▼
Set
Prg
mute
Set
def
▼
▲
aux
To Activate / Deactivate Auxiliary Output
Press and hold the “aux” key for 1 second.
▲
aux
To Activate Manual Defrost
Press and hold “def” key for at least 5 seconds.
def
▼To Reset Any Alarms With Manual
Reset
Press and hold the “Prg” and “aux”
key for at least 1 second.
▲
aux
Prg
mute

reset alarms w/manual reset / reset HACCP alarms / reset temp. monitoring
Summary Table of Alarm and Signals: Display, Buzzer and Relay
Integrated Electronic
Microprocessor Controller
Read And Save These Instructions - Page 2 of 3
User Interface - Display
17

CODE PARAMETER UOM* TYPE MINIMUM MAXIMUM DEFAULT
/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
dd Dripping time after defrost min F 0 15
d/1 Display of defrost probe 1 °C/°F F - -
/5 Select Celsius (°C) or Fahrenheit (°F) flag C 0 1
18
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
* Unit Of Measure
Read And Save These Instructions - Page 3 of 3
Integrated Electronic
Microprocessor Controller
Summary Table of Operating Parameters

19
JOHNSON® CONTROL - MR3CCUHV
Error Code System Status
F1
Indicates an open or shorted temperature sensor Alarm output is on. Compressor runs according to
the sensor failure mode selected (parameter SF).
Cycle power to reset control.
F2
Indicates an open or shorted evaporator sensor Alarm output is on. Defrost cycle is controlled by
parameters di (defrost initiation) and dd (defrost
duration). Correct problem to reset control.
A1
Indicates that the digital input was open for longer
than the time delay (id) and digital input (iF) Option 1
is selected
Compressor output is off. Alarm output is on.
Correct problem to reset control.
A2
Digital input closed for longer than time delay (id)
and digital input (iF) Option 2 is selected
Alarm output is on. Correct problem to reset control.
A3
Digital input open for longer than the time delay (id)
and digital input (iF) Option 3 selected
Fan output is off. Alarm output is on. Correct problem
to reset control.
HI
Temperature has exceeded the high temperature Alarm output is on. Correct problem to reset control.
LO
Temperature has fallen below the low temperature Alarm output is on. Correct problem to reset control.
EE Alarm output is on. Other outputs are off. Replace
control.
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

20
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 dis-
played. This toggles the key-
pad between locked and
unlocked.
To change the set point 1. Hold the Enter button
down for 3 seconds.
The display will change
to show the set point.
Release the Enter
button.
2. Press the Up or Down
button until you reach
the new set point.
3. Press the Enter button
to save the new set-
point.
Note: If the Enter button is not pressed after select-
ing the new set point, the new set point is not saved,
and the control will revert to the original set point.
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 but-
tons 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.