Master Bilt WCC-23SR User manual

908 Highway 15 North • New Albany, MS 38652
Phone: [phone]•Toll-Free: 800-647-1284
FAX: [phone]•Toll-Free: 800-232-3966
www.master-bilt.com

Commercial
Refrigerator & Freezer
Service Manual
Solid Door
Model No.: WCC-23SR
WCR-23SR
WCR-23SF

Commercial
Refrigerator & Freezer
Service Manual
Solid Door
Model No.: WCC-23SR
WCR-23SR
WCR-23SF

1
TABLE OF CONTENTS
1. FEATURE CHART
1-1. FRONT VIEW (HINGE RIGHT) : WCC-23SR
1-2. FRONT VIEW (HINGE LEFT) : WCC-23SR
1-3. FRONT VIEW (HINGE RIGHT) : WCR-23SR
1-4. FRONT VIEW (HINGE LEFT) : WCR-23SR
1-5. FRONT VIEW (HINGE RIGHT) : WCR-23SF
1-6. FRONT VIEW (HINGE LEFT) : WCR-23SF
1-7. SIDEVIEW
2. WIRING DIAGRAM
2-1. REFRI GERATOR : WCC-23SR, WCR-23SR
2-2. FREEZER : WCR-23SF
3. PART DETAILS
3-1. TOP GRILLE
3-2. CONDENSING UNIT COMPARTMENT
3-3. ELECTRIC BOX
3-4. DOOR
3-5. COOLING COMPARTMENT
4. MAIN COMPONENTS
4-1. COMPRESSOR
4-2. OVERLOAD PROTECTOR
4-3. RELAY ASSEMBLY
4-4. CONTROL SWITCH
4-5. DRYER
4-6. CAPACITOR
4-7. EVA FAN MOTOR
4-8. CONDENSER FAN MOTOR
4-9. LAMP
4-10. TRANSFORMER
4-11. MAIN PCB
4-12. EVA. DEFROST HEATER
5. ELECTRONIC CONTROLLER INSTRUCTION (FREEZER)
6. SPARE PARTS LIST
7. REPLACEMENT OF MAIN COMPONENTS
7-1. TOP GRILLE PARTS
7-2. REPLACING DOOR
7-3. REFRIGERATION COMPARTMENTS PARTS
7-4. CONDENSING UNIT
8. INSTALLATION METHOD OF REVERSE DOOR

1-1. FRONT VIEW (WCC-23SR)
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1. FEATURE CHART
1TOP GRILLE
2GRILLE DECORATION
3DOOR SWITCH
4THERMOMETER
5TOP HINGE ASSEMBLY
6BRAND LOGO
7DOOR LOCK
8DOOR
9DOOR HANDLE
10 SPRING BAR
11 BOTTOM HINGE ASSEMBLY
12 BOTTOM GRILLE ASSEMBLY
13 CASTER
14 SUCTION PIPE
15 CAPILLARY TUBE
16 CONDENSER ASSEMBLY
17 MOTOR
18 COMPRESSOR
19 SWITCH BOX
20 DRAIN PAN
- HINGE RIGHT

FEATURE CHART
3
1-2. FRONT VIEW (WCC-23SR)
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1TOP GRILLE
2GRILLE DECORATION
3DOOR SWITCH
4THERMOMETER
5TOP HINGE ASSEMBLY
6BRAND LOGO
7DOOR LOCK
8DOOR
9DOOR HANDLE
10 SPRING BAR
11 BOTTOM HINGE ASSEMBLY
12 BOTTOM GRILLE ASSEMBLY
13 CASTER
14 SUCTION PIPE
15 CAPILLARY TUBE
16 CONDENSER ASSEMBLY
17 MOTOR
18 COMPRESSOR
19 SWITCH BOX
20 DRAIN PAN
- HINGE LEFT

4
FEATURE CHART
1-3. FRONT VIEW (WCR-23SR)
1TOP GRILLE
2GRILLE DECORATION
3DOOR SWITCH
4THERMOMETER
5TOP HINGE ASSEMBLY
6BRAND LOGO
7DOOR LOCK
8DOOR
9DOOR HANDLE
10 HINGE MOVING PART
11 BOTTOM HINGE ASSEMBLY
12 BOTTOM GRILLE ASSEMBLY
13 CASTER
14 SUCTION PIPE
15 CAPILLARY TUBE
16 CONDENSER ASSEMBLY
17 MOTOR
18 COMPRESSOR
19 SWITCH BOX
20 DRAIN PAN
- HINGE RIGHT

5
FEATURE CHART
1-4. FRONT VIEW (WCR-23SR)
1TOP GRILLE
2GRILLE DECORATION
3DOOR SWITCH
4THERMOMETER
5TOP HINGE ASSEMBLY
6BRAND
7DOOR LOCK
8DOOR
9DOOR HANDLE
10 HINGE MOVING PART
11 BOTTOM HINGE ASSEMBLY
12 BOTTOM GRILLE ASSEMBLY
13 CASTER
14 SUCTION PIPE
15 CAPILLARY TUBE
16 CONDENSER ASSEMBLY
17 MOTOR
18 COMPRESSOR
19 SWITCH BOX
20 DRAIN PAN
- HINGE LEFT

6
FEATURE CHART
1-5. FRONT VIEW (WCR-23SF)
a
1TOP GRILLE
2GRILLE DECORATION
3DOOR SWITCH
4CONTROL PANEL
5TOP HINGE ASSEMBLY
6BRAND LOGO
7DOOR LOCK
8DOOR
9DOOR HANDLE
10 HINGE MOVING PART
11 BOTTOM HINGE ASSEMBLY
12 BOTTOM GRILLE ASSEMBLY
13 CASTER
14 SUCTION PIPE
15 CAPILLARY TUBE
16 CONDENSER ASSEMBLY
17 MOTOR
18 COMPRESSOR
19 SWITCH BOX
20 DRAIN PAN
21 POWER SWITCH
- HINGE RIGHT

7
FEATURE CHART
1-6. FRONT VIEW (WCR-23SF)
a
1TOP GRILLE
2GRILLE DECORATION
3DOOR SWITCH
4CONTROL PANEL
5TOP HINGE ASSEMBLY
6BRAND LOGO
7DOOR LOCK
8DOOR
9DOOR HANDLE
10 HINGE MOVING PART
11 BOTTOM HINGE ASSEMBLY
12 BOTTOM GRILLE ASSEMBLY
13 CASTER
14 SUCTION PIPE
15 CAPILLARY TUBE
16 CONDENSER ASSEMBLY
17 MOTOR
18 COMPRESSOR
19 SWITCH BOX
20 DRAIN PAN
21 POWER SWITCH
- HINGE LEFT

8
FEATURE CHART
1-7. SIDE VIEW
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21 DOOR BUMPER
22 DOOR GASKET
23 LAMP
24 SOCKET
25 EVAPORATOR FAN BLADE
26 EVAPORATOR FAN MOTOR
27 EVAPORATOR COIL
28 SUCTION LINE ASSEMBLY
29 DEFROST DRAIN PAN
30 DRAIN GUIDE
31 DRAIN HOSE
32 SHELF FIXTURE
33 LAMP COVER
34 FAN COVER
35 DUCT (A)
36 DUCT (B)
37 SHELF

9
2. WIRE DIAGRAM
2-1. WCC-23SR, WCR-23SR
2-2. WCR-23SF
WIRING DIAGRAM
CABINET FRAME HEATER
• OL : OVERLOAD PROTECTOR
• PTC : RELAY
• Voltage : 115V/60Hz

10
3. PART DETAILS
3-1. TOP GRILLE
Door Lock, Door Switch
3-2. Condensing Unit Compartment
Condensing Unit Assembly (WCC-23SR, WCR-23SR)
Door Lock
Thermometer
Door Switch
(Lamp Switch)
Line Assembly
Compressor
Condenser Fan Motor Assembly
Condenser Fan Motor Assembly
Condenser Fan Motor Assembly
Condenser Fan Motor Assembly
Condenser Fan Motor Assembly
Condenser Fan Motor Assembly
Condenser Fan Motor Assembly
Condenser Fan Motor Assembly
Condenser Fan Motor Assembly
Condenser Fan Motor Assembly
Condenser Fan Motor Assembly
Condenser Fan Motor Assembly
Condenser Fan Motor Assembly
Condenser Fan Motor Assembly
Condenser Fan Motor Assembly
Condenser Fan Motor Assembly
Condenser Fan Motor Assembly
Condenser Fan Motor Assembly
Condenser Fan Motor Assembly
Condenser Fan Motor Assembly
Condenser Fan Motor Assembly
Condenser Fan Motor Assembly
Condenser Fan Motor Assembly
Condenser Fan Motor Assembly
Condenser Fan Motor Assembly
Condenser Fan Motor Assembly
Condenser Fan Motor Assembly
Condenser Fan Motor Assembly
Condenser Fan Motor Assembly
Condenser Fan Motor Assembly
Condenser Fan Motor Assembly
Condenser Fan Motor Assembly
Condenser Fan Motor Assembly
Condenser Fan Motor Assembly
Condenser
Discharge Line
Filter-Dryer
Cycle Assembly (WCC-23SF)
Suction Pipe
Compressor
Condenser Fan Motor Assembly
Condenser Fan Motor Shroud
Condenser Coil
Condenser Pipe
Condenser Dryer

11
PART DETAILS
Drain Pan Assembly
Condenser Fan Motor Assembly
3-3. Electric Box
Holder Vapori-Paper
Case Vapori
Motor
Shaded Pole
Bracket
Support(A) Fan
Vapori-Paper

12
PART DETAILS
3-4. Door
Gasket
3-5. Evaporator Compartment (WCC-23SR, WCR-23SR)
Gasket
Duct (B) Plate Thermostat
Temperature
Control
Fan Guard
Duct (A)
Freezer Duct & Refrigerator Duct (WCR-23SF)
Evaporator Fan
Motor Guard
Duct (A)
Duct (B)

13
PART DETAILS
Evaporator & Fan Motor (WCC-23SR, WCR-23SR) Thermostat (WCC-23SR, WCR-23SR)
Fan Motor and
Fan blade
Evaporator coil
Thermostat Pipe
Thermostat Pipe
Thermostat Pipe
Thermostat Pipe
Thermostat Pipe
Thermostat Pipe
Thermostat Pipe
Thermostat Pipe
Thermostat Pipe
Thermostat Pipe
Thermostat Pipe
Thermostat Pipe
Thermostat Pipe
Thermostat Pipe
Thermostat Pipe
Thermostat Pipe
Thermostat Pipe
Thermostat Pipe
Thermostat Pipe
Thermostat Pipe
Thermostat Pipe
Thermostat Pipe
Thermostat Pipe
Thermostat Pipe
Thermostat Pipe
Thermostat Pipe
Thermostat Pipe
Thermostat Pipe
Thermostat Pipe
Thermostat Pipe
Thermostat Pipe
Thermostat Pipe
Thermostat Pipe
Thermostat Pipe
Freezer Evaporator & Fan Motor (WCR-23SF)
Lamp & Fan Motor Connectors Evaporator Fan
Motor Blade
Thermal Fuse
Evaporator
Evaporator Coil Heater
F-Sensor
Heater Connectors &
Sensor Connectors

14
4. MAIN COMPONENTS
4-1. COMPRESSOR
MODEL WCC-23SR, WCR-23SR WCR-23SF
Refrigerant R-404a R-404a
Voltage 115V/60Hz 115V/60Hz
Comp. Model AEA9422ZXA CAE2420Z
Part code 30200Q7000 30200R1100
Strating type CSIR CSIR
MODEL WCC-23SR, WCR-23SR WCR-23SF
Voltage 115V/60Hz
Switch Model K55-Q5607 N/A
Spec. Cut in 39.2°F / Cut off 24.8, 21.2, 17.6°F
Part Code 30283L0100
MODEL WCC-23SR, WCR-23SR WCR-23SF
Refrigerant R-404a R-404a
Spec. C-052-S (sporlan valve company) XH-9(50g)
Part Code 30268L0300 30268L0400
MODEL WCC-23SR, WCR-23SR WCR-23SF
Voltage MRT16ADK-69 MST16AHN or T0593
MODEL WCC-23SR, WCR-23SR WCR-23SF
Relay Model EMB-501-96/88H/3ARR12-KPL71 3ARR12KP*483
4-4. CONTROL SWITCH
4-5. DRYER
4-7. EVA FAN MOTOR
4-6. CAPACITOR
4-3. RELAY ASSEMBLY
4-2. OVERLOAD PROTECTOR
MODEL WCC-23SR, WCR-23SR WCR-23SF
Starting 165V/270 ~ 324µF 160V/315µF
Part Code Comp. Assembly Comp. Assembly
MODEL WCC-23SR, WCR-23SR WCR-23SF
Voltage 115V/60Hz
Motor Model IS4420DWSN-2A
Part Code 3963328120

15
MAIN COMPONENTS
4-8. CONDENSOR FAN MOTOR
4-9. LAMP
MODEL WCC-23SR, WCR-23SR WCR-23SF
Voltage 115V/60Hz
Motor Model IS4420DWSG-1
Part Code 39633220410
MODEL WCC-23SR, WCR-23SR WCR-23SF
Voltage 120V/60Hz
Lamp Model 25W
Part Code 30236L0100
4-10. TRANSFORMER
MODEL WCC-23SR, WCR-23SR WCR-23SF
Voltage 115V/60Hz
Transformer Model N/A DWS-115U
Part Code 30284L0100
4-11. MAIN PCB
MODEL WCC-23SR, WCR-23SR WCR-23SF
Voltage 115V/60Hz
PCB Model N/A 30243L0130
Part Code 1WF-1155
4-12. EVA DEFROST HEATER
MODEL WCC-23SR, WCR-23SR WCR-23SF
Voltage 115V/60Hz
Spec. N/A 445W
Part Code 30228L0802
** Last digit of micom code represents micom version.
If may be changed without notice

16
5. ELECTRONIC CONTROLLER INSTRUCTION
5-1. HOW TO USE THE PANEL
9
TEMPERATURE D.F.
8
7654321
FAN DOOR
MANUAL DEFROST
TEMPERATURE
˚F
- Bar LED
- It indicates setting
temperature level
- 88 LED
- It indicates inside
temperature, except
defrost function
- Keep pressing up & down buttons
simultaneously for five seconds, then the lock
will be cancelled.
- Set the temperature setting from level 1 to 9 by
pressing the up or down button.
- Factory setting is level 5.
- Forced defrost mode.
- Defrost mode can be started or cancelled by
pressing “MANUAL DEFROST”button for the five
seconds.

17
ELECTRONIC CONTROLLER INSTRUCTION
5-2. FUNCTION TABLE
No Function Controlled Description
Part
1 Initial Buzzer
Operation Fan
Lamp
88 LED
2 Temperature Compressor
Control Evap-Fan Motor
Con-Fan Motor
LED
3 Determination Heater
Of Function Compressor
Evap-Fan Motor
Con-Fan Motor
4 Defrost Heater
Function Compressor
Evap-Fan Motor
Con-Fan Motor
1. Buzzer will be ring with in 2 seconds when you plugged-in and turned on the
power switch.
2. 88 LED displays inside temperture.
3. If in side temperature is lower than -50°F or higher than 50°F, 88 LED displays
‘LO’or ‘HI’respectively
4. Compressor will be run if evaporator's temperature is higher than
38.3˚F(3.5˚C). Compressor will not run 3 minutes after plug-in.
1. This unit has lock function that prevents unauthorized person from changing the
temperature setting.
2. Keep pressing up&down buttons simultaneously for five seconds, then the lock
will be cancelled with beep sound.
3. Set the temperature setting from level 1 to level 9 by pressing the up or down
button.
* The temperature setting will be locked back automatically in five seconds after
you set.
* Factory temperature setting is level 5.
4. Buzzer rings 1 time whenever each button is pressed.
5. 88 LED will indicate real inside temperature, after your setting.
6. Compressor automatically turns on and off by F-sensor (Except error mode)
7. Compressor will not come on for 3 minutes after compressor off, even though
the F-sensor is at on point.
8. Evap. Fan Motor runs continuously except when door is opened and during
defrost mode.
9. Evap. Fan Motor will start within 3 seconds when door is closed.
10. Comp. On/off temperature(°F)
1. Defrost function is controlled by a time interval setting.
2. Time interval can be set by shifting dip s/w on the PCB board.
3. Time interval setting is as follows.
Dip Switch Cycle time
No.1 No.2 (hours)
11 12
10 10
01 8
00 6
4. Factory setting is to defrost every 6 hours
5. The first defrost function will start at half of time interval setting of when unit is
plugged-in.
1. Defrost step Pre-cool Heater defrost Pause Fan Delay
Comp. on off off on
Evap-fan on off off off
Con-fan on off off on
Heater off on off off
Max time 40 min. 40 min. 3 min. 5 min.
If D-sensor’s temperature If D-sensor’s
is over 50˚F, heater temperature
goes off. lower than 14˚F,
If D-sensor is in error, then Eva-fan
heater goes off motor
automatically 40 min turns on
after activated. immediately
LEVEL
Comp Off
Comp On
1
-2.2
5.0
2
-4.0
3.2
3
-5.8
1.4
4
-7.6
-0.4
5
-9.4
-2.2
6
-10.3
-3.1
7
-11.2
-4.0
8
-12.1
-4.9
9
-13.0
-5.8