Service and Maintenance

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PSC motors can be referred to as constant speed motors; X13 ECMs can be referred to as constant torque motors; and ECM 2.3 variable-speed motors can be referred to as constant airflow motors.

In order to install or diagnose issues in a refrigeration system, technicians must first have a solid grasp of its key components.

Know what type of detector you are using, know how to use it, and ensure it’s capable of detecting leaks by calibrating it on a regular basis.

There are several reasons why a refrigeration or air conditioning system may have high compressor discharge temperatures. That’s why technicians must carefully measure the system’s temperatures and pressures to determine the problem.

When faced with a leaky coil on a reach-in cooler, a decision needs to be made whether to repair or replace it. The final decision may come down to where the leak is located.

Correcting a duct system on oversized equipment can be a costly mistake that you’ll regret.

Calculated, deliberate ductwork design and construction are major factors in how effectively and efficiently a forced-air HVAC system works.

There are several reasons why the compressor discharge temperature of a refrigeration system can be high when the condensing temperature is not, and a checklist can help a technician figure out the root problem.

Microchannel coils are lightweight, offer better heat transfer, and use less refrigerant than traditional fin-and-tube coils; however, care must be taken when charging, as even a few ounces could reduce a systems’ performance, efficiency, and reliability.