Articles Tagged with ''troubleshooting and HVACR''

Servicing new reach-in coolers and freezers containing R-290 is not tremendously difficult but does require some different servicing procedures.

Learning how to troubleshoot a system that is experiencing leaky valves or worn rings can be challenging, so technicians need to take careful measurements in order to isolate the problem.

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.

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.

Technicians should learn how to troubleshoot defrost timers, as they can be the culprit if a freezer that uses an electric heater as its supplemental heat source has a frozen evaporator coil.

If a potential relay is malfunctioning, the compressor motor is in danger of not starting, stalling, locking rotor, or even burning out. That is why technicians should understand how to troubleshoot potential relays.

The ACHR NEWS visited Flame Furnace in Warren, Michigan to learn how to do maintenance and basic troubleshooting on a furnace.