Subzero WOLF ICB WS Series - FUNCTION OF THE WINE STORAGE ELECTRONIC CONTROL SYSTEM

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#7013455 - Revision A - April, 2009
Electronic Control System
International W
International W
ine Storage
ine Storage
(ICBWS)
(ICBWS)
Series
Series
FUNCTION OF THE WINE STORAGE ELECTRONIC CONTROL SYSTEM
The following pages explain monitoring, regulating and controlling functions of the electronic control system. Signal
traces from the ICBWS-30 wiring schematic are used to show current flow for the functions being explained.
ELECTRIC SHOCK HAZARD! POWER TO THE UNIT MUST BE DISCONNECTED WHENEVER SERVICING
COMPONENTS POWERED BY ELECTRICITY OR COMPONENTS NEAR ELECTRICAL COMPONENTS. EVEN
WHEN SWITCHED OFF, AC LINE VOLTAGE IS STILL PRESENT AT THE CONTROL BOARD!
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
L1
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
LIGHTS
LIGHTS
FAN CONTROL
RELAY
HIGH VOLTAGE
WHITE
WHITE
WHITE
BROWN
GRAY
WHITE
ORANGE/WHITE
5
1
4
2
6
7
8
3
220-240 VOLTS
50/60 CYCLES
Supply Power to the Lighting System
AC line voltage is supplied to the door switch. If the switch is closed, power is delivered to the coil in the relay which
induces contact between P2 and P6 of the relay, thus allowing power to the lights (See Figure 3-15).
NOTES:
• If the display lighting system is activated, power is delivered to the lights via J3P9 and through the contact of P4
and P6 of the relay, bypassing the door switch, so the lights will be energized even when the door closed
• Initiating Sabbath Mode (covered later) interrupts power from E3 and J3P9.
Figure 3-15. Lighting System Signal Trace (Normal Operation)
NOTE: If display lighting is activated, the
door switch is bypassed via J3P9