Articles by Joe Marchese

Ice Breaker: Relief Valves 101

Safety Device Helps Protect Equipment, Workers
By Joe Marchese
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Relief valves are used to release abnormally high pressure inside a vessel before that pressure causes the vessel to erupt. 


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Ice Breaker: Identifying, Choosing Proper Temp Sensors

There are Differences in this Basic Tool of the Trade
By Joe Marchese
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Not all temperatures sensors are created equal and not all instruments and controllers use the same type of temperature sensors. So the first step in troubleshooting or replacing this type of sensor is to first recognize the type of temperature sensor being used.


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Ice Breaker: Suction Line Insulation

Elastomeric Material Means Condensation Prevention
By Joe Marchese
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The suction line of a refrigeration system is normally insulated with a flexible, closed-cell elastomeric material. Insulating the suction line is done to prevent condensate from developing and dripping off. It also limits the amount of heat added to the refrigerant as it travels back to the compressor.


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Ice Breaker: The Last Steps of a Service Call

Leave a Lasting Impression on Your Customers
By Joe Marchese
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How you handle leaving a job site is as equally important as how you handle arriving and conducting the repair or installation. 


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Ice Breaker: Transformer Sizing and Calculating VA Capacity

Joe Marchese Explains How to Size a Step-Down Transformer
By Joe Marchese
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A popular electrical component used on many control circuits is the step-down transformer. It is the power source for a separate lower-voltage circuit which typically controls the operation of a system. 


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Ice Breaker: Water Regulating Valves

Choosing, Replacing, and Adjusting Water Regulating Valves Requires Patience
By Joe Marchese
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They serve two purposes: They regulate water flow to maintain the system’s high-side pressure and stop the flow of water when the system cycles off so as not to waste water.


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Ice Breaker: Compressor Floodback

Troubleshooting Compressor Floodback Issues
By Joe Marchese
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Determining that a compressor has failed on a refrigeration system is normally a relatively simple procedure. But, discovering why the original compressor failed may not be as simple. 


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Ice Breaker: Using Technology as a Service Tool

By Joe Marchese
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There are many aspects of a technician’s job where a smartphone or tablet can be extremely useful. These devices allow a technician to search the Internet for technical information while on the job. 


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Ice Breaker: Hydrocarbon Refrigerants

By Joe Marchese
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Gone are the days of the three basic refrigerants: R-12, R-22, and R-502. Today’s technicians need to be well-educated on all of the refrigerants they encounter.


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Ice Breaker: Hand Tool Safety

By Joe Marchese
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Many careless injuries are the result of rushing to complete a task and not taking the necessary time to do it right.


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Mark Satterfield, founder and CEO of Gentle Rain Marketing Inc. and author of “The One Week Marketing Plan” talks about his book and the importance of HVAC blogging. Posted on Sept. 19.

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