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Model 506 (UC Ice Maker)
Model 506 (UC Ice Maker)
Component Access & Removal
4-5
#3752200 - Revision B - May, 2006
Bin Thermostat
The bin thermostat operates automatically and is
adjustable for altitude correction. The bin thermostat
cuts in at 41°F R1.5, and cuts out at 35°F R1.5.
The control capillary bulb thermostat is located in a well
on the left side of the bin liner.
If the bin thermostat is replaced, it is necessary to care-
fully make a few bends in the capillary tubing before it
is threaded into the well, to make certain that the capil-
lary bulb touches the inside wall of the well.
To test:
1. Remove the wire leads.
2. Use an ohmmeter set on the R x 1 scale.
When the thermostat well is warm, the terminals should
read on the ohmmeter as a closed circuit.
When the thermostat well is cold (hold ice against well),
the terminals should read on the ohmmeter as an open
circuit.
Transformer
The transformer has a 115 Volt, AC primary coil, with a
secondary coil that produces 8.5 Volts at 2 Amps.
A special replacement service transformer is available
from your FSP parts distributor with a selectable 11-volt
tap. This higher voltage will slightly increase the heat of
the cutter grid wires. If the water supply to the icemak-
er has a high mineral content, the ice will have a higher
melting temperature. The warmer grid wires will help
divide the ice slab into cubes faster.
To test:
1. Remove the wire leads.
2. Attach a 120-volt test cord to the primary coil.
3. Use a voltmeter to test across the terminals of sec-
ondary coil. The meter should indicate 8.5 volts AC.
Door Light Switch
If present on the unit, the switch is located on the bot-
tom left of the escutcheon.
To test:
1. Remove the wire leads.
2. Use an ohmmeter set on the R x 1 scale.
3. Test across the terminals. The ohmmeter should
indicate a closed circuit.
Then depress switch and test. The ohmmeter
should indicate an open circuit.
Figure 4-6. Bin Thermostat Test Locations
Figure 4-7. Transformer
Terminals
To Well in Liner
Electrical Leads
