Articles Tagged with ''maintenance for HVACR''

Ask several refrigeration technicians about the best location to place a sight glass, and you will probably get several different answers.

Worn compressor rings and/or leaky compressor suction or discharge valves can cause a lack of cooling in refrigeration and air conditioning systems.

One important but often overlooked piece of equipment is the air filter, which protects the evaporator from dirt and lint.

Repairing refrigeration equipment — or, really, any equipment — has a huge customer service component.

Once restaurants started reopening, smart owners asked contractors to clean and sanitize ice machines before they were returned to service.

Customers are now more aware of their HVAC systems and the air it circulates.

This month’s troubleshooting situation involves an air-to-air, package unit heat pump that is approximately nine years old.

Designed to do their job without wavering, hydronic pumps do require maintenance to optimize their performance — even the maintenance-free ones.

Let’s look at how the density of refrigerant entering the compressor’s cylinders affects the mass flow rate of refrigerant through the compressor.

When working on a refrigeration system, technicians may occasionally come across one where the type of refrigerant is unknown.