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Electrical System
Wiring Diagram Sequence of
Operation
*OVERLOAD
FAN CYCLE CONTROL
BIN SWITCH
TB35
TB33
(52)
(51)
(48)
CONTACTOR
CONTACTS
L1
(42)
(66)
(64)
ICE THICKNESS PROBE
WATER LEVEL PROBE
NOT USED
TB35
HIGH PRES
CUTOUT
TB32
L1
(55)
SV1646-1
RUN CAPACITOR
RUN CAPACITOR**
C
S
R
TB34
(53)
(47)
(85) (86)
COMPRESSOR
FAN MOTOR
(AIR COOLED ONLY)
R
R
(45)
(46) (50)
PTCR
BIN SWITCH LIGHT
HARVEST LIGHT/
SAFETY LIMIT CODE LIGHT
CLEAN LIGHT
WATER LEVEL
(49)
(63)
(62)
(66)
(65)
(69)
ICE
OFF
CLEAN
(67)
(68)
1F
1C
LOW D.C.
VOLTAGE
PLUG
(62)
1G
TOGGLE SWITCH
68
67
69
66
62
VIEW FOR WIRING
INTERNAL WORKING
VIEW
TB37
(74)
(59)
(73)
(56)
CONTACTOR
COIL
TERMINATES AT
PIN CONNECTION
TB30
T
B30
TB30
TB30
L2 (N)
SEE SERIAL PLATE FOR VOLTAGE
(58)
FUSE (7A)
TRANS.
2
4
1
3
5
(61)
(60)
TB31
(76)
(98)
(57)
(99)
(75)
HOT GAS
SOLENOID
DUMP
SOLENOID
(81)
WATER
PUMP
(77)
(80)
(21)
(22)
WATER
VALVE
TB30
TB30
SELF-CONTAINED MODELS
Initial Start-Up or Start-Up After
Automatic Shut-Off
1. WATER PURGE
Before the compressor starts, the water
pump and water dump solenoid are
energized for 45 seconds to purge old water
from the ice machine. This ensures that the
ice-making cycle starts with fresh water.
The hot gas valve(s) is also energized
during the water purge. In the case of an
initial refrigeration start-up, it stays on for
an additional 5 seconds (50 seconds total).
Self-Contained Models
1. Water Purge (45 Seconds)
Toggle Switch
ICE
Bin Switch
Closed
Control Board Relays
#1 Water Pump Closed / ON
#2 Water Fill Valve Open / OFF
#3 Hot Gas Solenoid Closed / ON
#4 Water Dump Valve Closed / ON
#5 Contactor Coil Open / OFF
Compressor OFF
Safety Controls (Which could stop ice machine operation)
High Pressure Cut-Out Closed
Main Fuse (On Control Board) Closed