unit 45

What two functions does the evaporator of a domestic refrigerator perform?

• Filters and cools the air.

• Absorbs and dissipates heat.

• Humidifies and cools the air.

• Dehumidifies and cools the air.

The temperature of the fresh food compartment of a domestic refrigerator is ___.

• 35-40F

• 20-35F

• 50-60F

• 30-50F

The heaters located near the refrigerator door to keep the cabinet from sweating are called the ___ heaters.

• mullion or panel

• defrost cycle

• condensate

• re-cycle

An accumulator at the outlet of the evaporator is there to ___.

• allow the evaporator to operate as full as possible with liquid refrigerant

• accumulate moisture in the system to reduce frost formation

• provide space for refrigerant vapor to collect

• accumulate foreign particles and other contaminants

The plastic in the freezer compartment is at very low temperatures and, as a result, is quite ___.

• fragile
• clean

• ductile

• soft

The type of condenser that a domestic refrigerator uses can be a(n) ____ condenser.

• static

• induced-draft

• hot wall

• All of the above.

The condensate from the evaporator coil is disposed of by evaporation using heat from the discharge line or ____.

• heated air from the condenser

• air from the evaporator fan

• electric heater in the drain pan

• heat from the compressor fins

The capillary tube metering device on a domestic refrigerator is generally fastened to the ____ for heat exchange.

• liquid line

• compressor discharge line

• condenser coil

• suction line

The adjustment device used for low atmospheric pressure conditions is called the thermostat ____ adjustment control.

• PTC

• current relay

• altitude

• mullion

On a domestic refrigerator equipped with a defrost cycle that depends on the run time of the compressor, what starts the defrost cycle?

• Cooling thermostat

• Compressor

• defrost timer

• door switch