Service manual

3-3
Section 3 Ice Machine Operation
Q130/Q210/Q270 SELF-CONTAINED ICE MACHINES
ENERGIZED PARTS CHART
ICE MAKING SEQUENCE OF OPERATION
CONTROL BOARD RELAYS RELAY
1233A3B
LENGTH
WATER PUMP HOT GAS VALVE RELAY COIL
COMPRESSOR
CONDENSER ∗
∗∗
∗
FAN MOTOR
of “ON”
TIME
INITIAL START-UP/
START UP AFTER
AUTO SHUT-OFF:
1. Pressure
Equalization
OFF ON OFF OFF OFF
15
Seconds
2. Refrigeration
System Start-up
OFF ON ON ON ON
5
Seconds
FREEZE
SEQUENCE:
3. Pre-Chill
OFF OFF ON ON ON
30
Seconds
4. Freeze
ON OFF ON ON ON
Until 7 sec.
water contact
with ice
thickness
probe
HARVEST
SEQUENCE:
5. Harvest
OFF
ON ON ON ON
Bin switch
activation
AUTOMATIC
SHUT-OFF:
6. Auto Shut-Off
OFF OFF OFF OFF OFF
Until
bin switch
re-closes
∗
∗∗
∗ Condenser Fan Motor: The fan motor is wired through a fan cycle pressure control, therefore, it may cycle on and off.