Articles by Joe Marchese

If TXV hunting is observed when troubleshooting a refrigeration system, its cause should be identified and repaired to allow for better system performance.

Continuous and rapid cycling is hard on a compressor, but the use of a simple time delay relay can mitigate the risk of compressor failure.

If an ice machine evaporator has a grid design, it can separate from the evaporator plate over time, causing ice to form between the two parts, causing problems.

While servicing equipment, technicians should be on the lookout for sources of potential future leaks, as well as follow good service practices to prevent creating leaks.

When installing and repairing refrigeration equipment, technicians should always follow good service practices to prevent any contaminants from entering the piping or system components.

Repairing reach-in coolers and freezers with electronic temperature controllers can be challenging at times.

While repairing a system, technicians should try to look ahead and avoid common issues that can make repairs more difficult.

Pressure testing a system with dry nitrogen can be a very effective method of verifying a system is leak-free.

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

One of the major components in any refrigeration system is the evaporator, and there are several types of direct expansion (DX) evaporators that can be used.