Sub-Zero Wolf 506UI, Service Manual

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Page 23
Model 506 (UC Ice Maker)
Model 506 (UC Ice Maker)
Theory of Operation
3-11
#3752200 - Revision B - May, 2006
Figure 3-20. Off Cycle, Switch OFF
OFF Cycle when the service control switch is in the
“OFF” position but power is still supplied to unit.
On units with an FSP condensate pump installed,
power will continue to be supplied to the condensate
pump through the receptacle. The pump will operate
when needed through a pressure switch in the pump
itself.
(See Figure 3-20)
2 1
6
3 ON
OFF
CLEAN
SERVICE
SWITCH
115
VOLTS
60 HERTZ
N L
WATER
PUMP
CONDENSER
FAN
START RELAY
COMPRESSOR
S
R
RECEPTACLE
HOT
GAS SOLENOID N.C.
N.C.
WATER
VALVE
SOLENOID
EVAPORATOR
THERMOSTAT
2
3
1
BIN
THERMO-
STAT
OVERLOAD
TRANSFORMER
115 V
8.5 V
DOOR SWITCH
CUTTER GRID
UNIT SHOWN WITH FSP CONDENSATE;
PUMP; SERVICE SWITCH IN “OFF”
POSITION; BIN NOT FULL OF ICE;
DRAINAGE WATER AT PUMP.
PLUG
PRESSURE
SWITCH
CONDENSATE
DRAIN PUMP
Figure 3-21. Clean Cycle
2 1
6
3 ON
OFF
CLEAN
SERVICE
SWITCH
115
VOLTS
60 HERTZ
N L
WATER
PUMP
CONDENSER
FAN
START RELAY
COMPRESSOR
S
R
RECEPTACLE
HOT
GAS SOLENOID N.C.
N.C.
WATER
VALVE
SOLENOID
EVAPORATOR
THERMOSTAT
2
3
1
BIN
THERMO-
STAT
OVERLOAD
TRANSFORMER
115 V
8.5 V
DOOR SWITCH
CUTTER GRID
UNIT SHOWN WITH GRAVITY DRAIN;
SERVICE SWITCH IN “CLEAN”
POSITION; IN CLEAN CYCLE.
SHUNT
2
CLEAN Cycle
In the electrical system, power is supplied to the water
pump through the service control switch.
(See Figure
3-21)