Manitowoc S model, Service Manual, Page: 74 / 168

Electrical System Section 6
6-14
Part Number 80-1480-3
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 6-11. Remote Models Remote — Freeze
4. Freeze (Until 10 Seconds of Water Contact with Ice Thickness Probe)
Toggle Switch ICE
Bin Switch Closed
Control Board Relays
#1 Water Pump ON
#2 Harvest Valve (Left) / HPR Valve OFF
#3 Harvest Valve (Right) OFF (When Used)
#4 Air Compressor OFF (When Used)
#5 Water Inlet Valve
Cycles OFF, then ON
one more time
#6 Water Dump Valve OFF
#7 Contactor Coil / Liquid Line Solenoid Closed / ON
#7A Compressor ON
#7B Condenser Fan Motor ON
Safety Controls (Which could stop ice machine operation)
High Pressure Cut-Out Closed
Main Fuse (On Control Board) Closed
SV3158-4
Water Valve
Harvest Valve
Dump Valve
Water Pump
(20)
(21)
(79)
(74)
(61)
(60)
(57)
(98)
(22)
(76)
(81)
(77)
(80)
(26)
(25)
(58)
(59)
Contactor Coil
(56)
L2
Air Compressor
(8)
(83)
(88)
(22)
(75)
Liquid Line
Solenoid
HPR Valve
(55)
(89)
(9)
(78)
(82)
(42)
(50)
(45)
(46)
(F2)
(F1)
(51)
Black
Red
Yellow
(L1)
(L1)
(L2)
(6)
(1)
(2)
Remote Fan Motor
Remote
Condenser
Run Capacitor
Contactor
Contacts
Compressor
Ice Thickness
Probe
Water Level
Probe
High Pressure
Cut-out
Ground
Run
Cap.
OFF
Clean
ON
Bin Switch
Trans
Fuse 7A
Control Board
(2)
(6)
(5)
(1)
(7)
(4)
PTCR
Low DC
Voltage
Plug
(99)