Sub-Zero 700TC-3 Service Manual page 61

Integrated
Integrated
MIDSOUTH AND JAPAN-SERVO
ICEMAKER OPERATION
(700TCI-3 AND 736TCI-3 ONLY)
The following series of electrical schematics illustrate a
typical icemaker cycle of operation. Below each
schematic is a diagram indicating the approximate loca-
tion of the ice ejector and ice level arm during the
phase the schematic indicates.
Freeze Phase of Ice Making Cycle (See Figure 6-8)
• The ice mold is filled with water.
• The thermostat is open.
• No icemaker components are energized.
Start of the First Revolution (See Figure 6-9)
• The water in the ice mold has turned to ice.
• At 15°F (-9°C) ± 3° the thermostat closes.
• The mold heater is energized through the thermo-
stat.
• The drive motor is started through the thermostat
and "normally closed" terminal of the holding
switch.
• The ice ejector begins to turn and the shut-off arm
begins to rise.
3
3 Series
Series
(700- T ALL)
(700- T ALL)
6-7
Icemaker Information
115 VOLTS
60 CYCLES
THERMOSTAT
SHUT-OFF SWITCH
NO
C
NC
SOLENOID SWITCH
NC NO
WATER
SOLENOID
C NC
NO
HOLDING SWITCH
APPROXIMATE POSITION
OF ICE EJECTOR AND
ICE MOLD
ICE LEVEL ARM
DURING OPERATION
Figure 6-8. The Freeze Phase
115 VOLTS
60 CYCLES
THERMOSTAT
SHUT-OFF SWITCH
NO
C
NC
SOLENOID SWITCH
NC NO
WATER
SOLENOID
C NC
NO
HOLDING SWITCH
APPROXIMATE POSITION
OF ICE EJECTOR AND
ICE MOLD
ICE LEVEL ARM
DURING OPERATION
Figure 6-9. Start of First Revolution
#3758412 - Revision B - December, 2006
TCO
MOLD HEATER
MOTOR
C
WATER
ICE BUCKET
TCO
MOLD HEATER
MOTOR
C
ICE
ICE BUCKET