Joe Marchese

Mistakes To Avoid When Changing Out A Compressor

Following these steps can reduce the chances of a call back

October 7, 2019

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

Take Time to Verify the Diagnosis of System Faults

Correctly identifying the issue leads to profitable service calls

Joe Marchese

September 9, 2019

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

Service Technicians Must Learn to Manage Service Risks

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

Joe Marchese

August 12, 2019

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

When Possible, Repair Reach-in Coolers Without Using Gauges

Using a pressure gauge on these sealed systems can lead to other service issues

Joe Marchese

July 1, 2019

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.

There are many accessories, like the TXV pictured here, that can be added to an operating system. - The ACHR News

Refrigerant Subcoolers Can Often Increase Overall System Efficiency

Understanding when to apply refrigeration accessories is an important skill

Joe Marchese

June 10, 2019

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

Some Modifications Can Make HVAC Systems More Serviceable

Make sure it makes sense and doesn't change the design of the system

Joe Marchese

May 6, 2019

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.

One Compressor Does Not Equal Another: Verify Before Replacing

When choosing a new model, check on a few things first

Joe Marchese

April 1, 2019

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

The Importance of Startup and Commissioning in Refrigeration

Don’t skip this important process when installing systems

Joe Marchese

March 4, 2019

A critical step in the installation of a built-up (field-piped) refrigeration system is the startup and commissioning of the equipment, which simply means verifying the operation of the system and its components. Although this seems obvious, it is a step that is occasionally skipped or done too quickly to be effective.

Don’t Be a One-Gauge Technician

Look at the whole picture when troubleshooting a refrigeration system

Joe Marchese

February 4, 2019

When servicing a refrigeration system, it is important to accurately determine the true cause of the failure. Misdiagnosing the problem can often create additional system issues for you and the customer.

Webinars Are a Convenient Way to Provide More HVAC Technical Training

Online resources are often available 24/7 without any necessary travel

Joe Marchese

January 14, 2019

These technologies continue to evolve and change as systems become more efficient and as new methods are discovered to improve the refrigeration cycle. As such, the importance of continuing education cannot be emphasized enough.