Articles by Joe Marchese

Learning how to use the compressor operating envelope can help service contractors prevent failures, as well as choose the correct replacement compressor. 

Following best practices when cleaning and repairing leaks is crucial in systems with microchannel condensers. 

Always let the refrigeration system reach a steady state before making repairs or adjustments. Skipping this step can mess up measurements, leading to misdiagnoses and wasted time. 

In cold climates, refrigeration systems with air-cooled condensers may require extra components to prevent the low-pressure switch from opening during startup. 

Encapsulated pressure controls are a popular type of pressure control that can be used on new and existing refrigeration systems. 

Troubleshooting and replacing a liquid line solenoid is generally not a difficult task – if technicians understand their design and how they operate. 

Solving frost or ice issues with a walk-in freezer is generally not difficult but will require a thorough inspection to find the root cause of the issue. 

Data recording can help less experienced technicians troubleshoot refrigeration systems. Quickly and accurately determining the cause of a system problem is beneficial to both the equipment owner and the servicing contractor, and  experience can be a major factor in a technician's ability to troubleshoot systems with greater precision. 

Cleaning evaporator coils in a walk-in cooler can be challenging, but it needs to be done in order to keep the system operating efficiently.