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Technical Data & Tech Tips
SERVICING INFORMATION
SERVICEABLE PARTS
COMPRESSOR
RELAY
OVERLOAD
WATER PUMP
WATER VALVE.
SOLENOID COIL (HGV)
THERMISTOR (Bin)
THERMISTOR (Evap)
PC BOARD
TRANSFORMER
FAN MOTOR
DRAIN PUMP (optional)
1.
Refrigerant charge must be applied to the high side only.
2.
This unit operates on 120 VAC except for the cutter grid, electronic control board and optional
light, which operate at 8.7 VAC.
3.
The transformer, cutter grid and electronic control board remain energized in ON and CLEAN
modes.
THERMISTOR OPERATING PARAMETERS
ICE THICKNESS
Temperature
NORMAL
52.5 F – .3
THICK
52.5 F – .3
THIN
52.5 F – .3
NOTE:
The evaporator thermistor is clipped to the outlet tubing of the evaporator, between the two 90 bends
before the accumulator..
NOTE:
If evaporator thermistor is not present or open, the electronic control will continue to make ice based
on time instead of temperature. (20 minutes for ice making and 3 minutes for harvest.)
QUICK TIP: To check the ohms of the evaporator or ice bin thermistor, stir the thermistor in a glass of ice
water for two minutes. This should create a ice bath of approximately 32 F. With the thermistor submersed in
the ice water check for 30000 to 33000 Ω. If the ohm readings fall between this range, the thermistor is good.
SERVICEABLE ELECTRICAL COMPONENTS
Run Winding
Start Winding
(31 gpm)
EVAPORATOR THERMISTOR
CUT-IN
Resistance
Temperature
18.7kΩ – 1%
6.5 F – .3
18.7kΩ – 1%
4.5 F – .3
18.7kΩ – 1%
8.5 F – .3
ICE BIN THERMISTOR
Temperature
BIN SHUT-OFF
40 F – 1
Model 235
Model 235
Part No.
Wattage
2176659
244
2183410
2183404
2185748
26 - 30
2185531
12 nom.
759112
7 - 9
2185679
2185680
2185621
23
2185657
40
2183437
12 - 15
2185528
WATER VALVE OFF (during harvest)
CUT-OUT
Resistance
69.3kΩ – 1%
73.5kΩ – 1%
65.3kΩ – 1%
Resistance
Temperature
25.9kΩ – 3%
35 F – 1
8-2
Resistance
1 - 5Ω
3 - 11Ω
15.95Ω
277.5Ω
376Ω
10K@ 77 F (25 C)
10K@77 F (25 C)
360
277 - 275Ω
6.9Ω
Temperature
Resistance
40 F – .3
25.9kΩ – 1%
40 F – .3
25.9kΩ – 1%
40 F – .3
25.9kΩ – 1%
Resistance
29.8kΩ – 3%
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