Manitowoc S model, Service Manual

Page: 73 / 168

Section 6 Electrical System
Part Number 80-1480-3
6-13
Freeze Sequence
3. PRE-CHILL
To pre-chill the evaporator, the
compressor runs for 30 seconds (60
seconds initial cycle) prior to water
flow.
NOTE: The water fill valve remains
on until the water level probe is
satisfied.
Remote — Pre-Chill
Table 6-10. Remote Models
3. Pre-Chill (60 Seconds Initial Cycle - 30 Seconds thereafter)
Toggle Switch ICE
Bin Switch Closed
Control Board Relays
#1 Water Pump OFF
#2 Harvest Valve (Left) / HPR Valve OFF
#3 Harvest Valve (Right) OFF (When Used)
#4 Air Compressor OFF (When Used
#5 Water Inlet Valve ON
#6 Water Dump Valve OFF
#7 Contactor Coil / Liquid Line Solenoid Closed / ON
#7A Compressor ON
#7B Condenser Fan Motor May Cycle ON / OFF
Safety Controls (Which could stop ice machine operation)
High Pressure Cut-Out Closed
Main Fuse (On Control Board) Closed
SV3158-3
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)