Subzero WOLF ICB WS Series - Monitor and Control Off-cycle Defrost

Page 24
3-12
#7013455 - Revision A - April, 2009
Electronic Control System
International W
International W
ine Storage
ine Storage
(ICBWS)
(ICBWS)
Series
Series
Monitor and Control Off-cycle Defrost
With High Offset (Cut-in) being governed by evaporator temperatures, the refrigeration system will remain off until at
least one evaporator temperatures exceed set-point by one degree. With a set-point of 38°F (3°C), the high-offset
would be 39°F (4°C); With a set-point of 65°F (18°C), the high-offset would be 66°F (19°C). This method allows the
evaporators to fully defrost before cooling is initiated.
Figure 3-18. Off-cycle Defrost Signal Trace
BLACK
GRAY
BROWN
PINK
M
M
BLUE
WHITE/BLACK
WHITE/BLACK
M
WINE
BOARD
CONTROL
J8
14
J3
GREEN/YELLOW
1
8
J2
LIGHT SWITCH
ORANGE/RED
J1 1
WHITE
NEUT
M
EVAPORATOR FAN MOTORS
UPPER
LOWER
E1
E3
E2
WHITE/BLACK
OVERLOAD PROTECTOR
WHITE
COMPRESSOR
TAN
ORANGE
CONDENSER FAN MOTOR
AWECO REF VALVE
STARTING RELAY
COMPRESSOR
295 Ω
(WHEN USED)
RUNNING CAPACITOR
DISPLAY
1J1
J2J8
E2
8
LOW VOLTAGE
MEMBRANE SWITCH
E1
E3
14
1
J3
GRAY W/ WHITE
BLUE W/ RED
BLUE W/ BLACK
BLUE W/ BLACK
BLUE W/ WHITE
BLUE W/ WHITE
ORANGE W/ RED
BLUE W/ YELLOW
ORANGE W/ YELLOW
WHITE W/ BLUE
WHITE W/ RED
UPPER EVAPORATOR
THERMISTER 4
LOWER CABINET
THERMISTER 1
LOWER EVAPORATOR
THERMISTER 3
UPPER CABINET
THERMISTER 2
LIGHTS
LIGHTS
FAN CONTROL
RELAY
FOR OPTIONAL HOME ALARM HOOK-UP
HIGH VOLTAGE
WINE
BOARD
CONTROL
WHITE
WHITE
WHITE
BROWN
GRAY
WHITE
5
1
4
2
6
7
8
3
L1
220-240 VOLTS
50/60 CYCLES
No cooling called for; high
offset not achieved
Refrigeration system not energized; evaporators defrost