Articles by Joe Marchese

We need to be aware of the possibility of severe pressure drops creating an issue for the system and how we analyze its operation.

If the repair will be more than 50 percent of the cost of a new system, it is generally best to replace it. However, there may be other factors.

Controls offer many benefits to the design and operation of a system, but they can add a level of difficulty when troubleshooting a system failure.

Replacing a compressor is typically a major investment, so having to return and repair the same issue, or an additional issue, should be avoided.

Correctly diagnosing system faults is important to profitable service calls and to the reputation of technicians and their companies.

Choosing the right course of action is the key to a successful and profitable repair.

When possible, repairing these coolers without attaching a pressure gauge to the sealed system can avoid creating unnecessary service issues with the cooler in the future.

Understanding how accessories are properly used will allow technicians to better maintain and repair refrigeration systems.

When installing or repairing a refrigeration system, technicians should look for opportunities to slightly modify the system (without changing its design) to make it more serviceable.

If a system has a defective compressor, finding a replacement is generally easy, but here are a few tips, just in case.