Page 6: The Compressor

Not all refrigerators have the same components described in previous pages.

Following are some of the exceptions you may see.

Gas Refrigerators

These are generally found in RV installations, where electricity is frequently unavailable for extended periods of time. Most operate by igniting a Propane burner within the refrigerator unit.

IF YOU HAVE A “GAS” REFRIGERATOR, NOTHING ON THIS SITE APPLIES TO YOUR REFRIGERATOR.
It uses an entirely different operating system; it does NOT use Freon or a compressor. Gotta find different repair info. Sorry!

Some Refrigerators Have No Evaporator Fan And/Or No Condenser Fan

Mini-refrigerators usually don’t have any fans. Air circulates by convection; the principle that warm air rises and cold air sinks.

Warm air rises from the condenser, and cold air from near the floor replaces it.

Likewise, the freezer makes the air cold inside, at the top of of the refrigerator. This cold air then sinks to the bottom of the inside of the refrigerator, and warm air rises to replace it, mixing and cooling the air inside the fridge.

Manual-And Non-Self Defrosters

Almost no mini-refrigerators are self-defrosters. These units do not have a timer that initiates the defrost mode. Some must be initiated manually (usually there is an obvious defrost button) and some have no defrost at all…they must be unloaded, unplugged, and let defrost by themselves.

Hot Gas Defrosters

Certain refrigerators use hot Freon circulated backwards through the evaporator to melt frost, rather than an electric heater. Though there are some older domestic models, most are no longer in use. Nowadays, hot gas defrost is generally used on larger commercial refrigeration units.

If you suspect that you may have any of these units, ask your appliance parts retailer or dealer to confirm your suspicions. With a make, a model number and perhaps a serial number, they should be able to tell you what you have.

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Page 6: The Compressor