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Articles by John Tomczyk
Clear, concise, and accurate communication between service technicians, parts suppliers, customers, and the home shop is rapidly gaining importance as the HVACR field transitions and becomes more technically oriented.
During the off cycle, or especially during a long shutdown, refrigerant will want to travel, or migrate, to a place where the pressure is the lowest.
When a refrigeration system has lost most of its refrigerant charge in a short period of time, the leak is probably significant and should be easy to find.
Compressor overheating is usually caused from high compression ratios. High compression ratios can be caused from a combination of high condensing pressures (temperatures) and low suction (evaporating) pressures.
The evaporator is a major component in the refrigeration system, and an efficient evaporator plays a key role in saving energy.
We are going to look at issues related to a partially restricted filter/drier. For this purpose I have included a service checklist as well as a number of illustrations.
Compressor overheating is often referred to as the HVACR industry’s most serious field problem.