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Section 6
4. FREEZE
The water pump starts after the pre-
chill. An even flow of water is directed
across the evaporator and into each
cube cell, where it freezes.
The water fill valve will cycle off then
on one more time to refill the water
trough.
When sufficient ice has formed, the
water flow (not the ice) contacts the
ice thickness probes. After
approximately 10 seconds of
continual contact, a harvest cycle is
initiated.
NOTE: The ice machine cannot
initiate a harvest cycle until a 6-
minute freeze lock has expired.
Table 6-4. Self-Contained Models
Toggle Switch
Bin Switch
Control Board Relays
#1
Water Pump
#2
Harvest Valve (Left)
#3
Harvest Valve (Right)
#4
Air Compressor
#5
Water Inlet Valve
#6
Water Dump Valve
#7
Contactor Coil
#7A
Compressor
#7B
Condenser Fan Motor
Safety Controls (Which could stop ice machine operation)
High Pressure Cut-Out
Main Fuse (On Control Board)
Part Number 80-1559-3
L1
High
Pressure
Cutout
(88)
(42)
Water Level Probe
Contactor
Contacts
L1
4. Freeze (Until 10 Seconds of Water Contact with Ice Thickness Probe)
Ground
(55)
(89)
Control Board
(2)
(6)
(5)
(1)
(7)
(4)
Trans.
Fuse (7a)
Ice Thickness
Probe
Low DC
Voltage
Plug
(Red)
Compressor
Overload
(Black)
(51)
(85)
(86)
Fan Cycle
Control
Self-Contained — Freeze
Electrical System
Water Valve
(21)
(20)
(61)
Harvest Valve
(77)
(60)
Dump Valve
(76)
Water Pump
(57)
(98)
(58)
Terminates at
Pin Connection
(59)
L2
Contactor Coil
(25)
(56)
Air Compressor
(26)
(9)
(8)
Bin Switch
(6)
Clean
(1)
OFF
ICE
(2)
Run Capacitor
(46)
(Yellow)
(45)
PTCR
Fan Motor
Run Capacitor
ICE
Closed
ON
OFF
OFF (When Used)
OFF
Cycles OFF, then ON
one more time
OFF
Closed / ON
ON
May Cycle ON / OFF
Closed
Closed
L2 or N
(99)
(22)
(80)
(75)
(81)
(74)
(50)
SV3137-5
6-5
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