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4
Electrical System
Freeze Sequence
3. PRE-CHILL
*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)
RUN CAPACITOR
RUN CAPACITOR**
C
S
TB34
(53)
(47)
(85) (86)
COMPRESSOR
R
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.
5
2
4
1
3
(61)
(60)
TB31
(76)
(98)
(57)
(99)
(75)
HOT GAS
SOLENOID
DUMP
SOLENOID
(81)
WATER
PUMP
(77)
(80)
(21)
(22)
WATER
VALVE
TB30
TB30
To pre-chill the evaporator, the compressor runs
for 30 seconds prior to water flow.
The water fill valve remains on until the water
level sensor closes for three continuous
seconds.
Self-Contained Models
3. Pre-Chill (30 Seconds)
Toggle Switch
ICE
Bin Switch
Closed
Control Board Relays
#1 Water Pump Open / OFF
#2 Water Fill Valve Closed / ON
#3 Hot Gas Solenoid Open / OFF
#4 Water Dump Valve Open / OFF
#5 Contactor Coil Closed / ON
Compressor ON
Safety Controls (Which could stop ice machine operation)
High Pressure Cut-Out Closed
Main Fuse (On Control Board) Closed