Compressor Changeout Form 1ph/3ph

It is recommended that when a compressor is being replaced. A complete evaluation of the part and system be made. Changing the compressor is one of the largest repairs that a service technician can encounter during the repair of a heating and cooling system. This checkout form has been developed to help guide the technician through the repair process.

Compressor Winding Information

Important Note:

Before making any electrical checks disconnect all electrical power to the system including the Indoor and Outdoor unit power sources.

If a compressor failed and the cause has not been determined and eliminated, the replacement compressor will fail.
Since you cannot see inside of a hermetically sealed compressor the oil is a valuable service tool on what caused the failure. Make an oil inspection and measurement tool out of an old clear one gallon milk jug. Prior to use add ounce lines to the jug. Or use a container of some sort.

The oil quantity is listed on the compressor data tag.
Place the removed compressor on a secure tailgate or bench.
Slowly tip the compressor toward the open suction stub.
Place the milk jug under the suction stub to capture the used oil.
Look at the clarity and quantity of the coil.
Once done with your inspection pore the oil back into failed compressor suction stub.