Manitowoc S600M, Service Manual

Page: 44 / 103

Electrical System Section 6
6-4
Part Number 80-1630-3
Freeze Sequence
3. PRE-CHILL
To pre-chill the evaporator, the
compressor runs for 30 seconds (60
seconds initial cycle) prior to water
flow.
The water fill valve remains on until
the water level probe is satisfied.
Self-Contained — Pre-Chill
Table 6-3. Self-Contained 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) OFF
#3 Harvest Valve (Right) OFF (When Used)
#4 Air Compressor Not Used
#5 Water Inlet Valve On
#6 Water Dump Valve OFF
#7 Contactor Coil 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
SV3137-3
(89)
(55)
(88)
High
Pressure
Cutout
Control Board
L1
Ground
(2)
(6)
(5)
(1)
(7)
(4)
L2 or N
Water Valve
Harvest Valve
(20)
(21)
(22)
(61)
Dump Valve
Water Pump
(60)
(76)
(81)
(75)
(77)
(80)
(57)
(98)
(58)
(59)
(42)
Ice Thickness
Probe
Water Level Probe
Trans.
Fuse (7a)
L2
Terminates at
Pin Connection
(99)
Contactor Coil
(56)
Air Compressor
(26)
(25)
Low DC
Voltage
Plug
Bin Switch
Clean
OFF
ICE
(2)
(1)
(6)
(8)
(9)
(74)
Compressor
Run Capacitor
(Red)
(Yellow)
Fan Motor
PTCR
(45)
(46)
(50)
(51) (85)
Overload
(Black)
(86)
Fan Cycle
Control
L1
Contactor
Contacts
Run Capacitor