In addition to the failure modes previously described, there are several other system-related problems that, if not corrected, can result in the mechanical failure of…

If a leak exists at the electrical terminals of a hermetic compressor (Figure SP-9-5), it cannot be repaired and the compressor must be replaced. If…

Compressors depend upon their valves and rings to provide a seal between the high-pressure and low-pressure sides of the system and the compressor. If either…

A compressor is generally considered to be seized if it hums but will not start, and draws locked rotor current for several seconds as measured…

The most common types o f compressors encountered when servicing residential and light commercial equipment are the reciprocating, rotary, and scroll-type hermetic compressors. In a…

Purpose – The compressor is the heart of the cooling system. It creates the pressure difference that causes the refrigerant flow around the system. Compressor…

Once a switch or set of contactor/relay switched contacts (F ig u re SP-8-4) have been identified as the probable cause of an electrical problem…

Inductive loads include relay and contactor coils, compressor motors, and fan motors (Figure SP-8-4). They also include control transformers, solenoid valves, and some gas valves.…