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C. Safety Devices
1. Compressor External or Internal Protector (All Models)
If combined temperature/amperage value is above the limit specified by the
compressor manufacturer, the compressor protector operates independently to turn
off the compressor. The compressor protector de-energizes the compressor until the
temperature/amperage value returns to an acceptable level.
2. High-Pressure Switch
If pressure on the high-side of the appliance exceeds Hoshizaki specifications, the
high-pressure switch activates and interrupts the compressor circuit, de-energizing the
compressor until the pressure returns to an acceptable level.
If the condenser fan motor is operating and the compressor is off, it is most likely that the
compressor protector opened. If both the compressor and condenser fan motor are off, it
is most likely the appliance is off or the high-pressure switch has opened.
D. Perimeter and Mullion Heaters
Freezers are equipped with perimeter and mullion heaters. If condensation occurs,
check continuity of heaters.
