Articles Tagged with ''service''

Commercial Contractor Takes RTUs to Facebook

June 13, 2011
Does it make a lot of sense for a commercial HVAC contractor, who specializes in rooftop unit service and replacement, to market his wares on social media networks like Facebook and Twitter? If you had suggested this to Jon Lazarus a few years ago, he might have wanted to find a straitjacket for you. But not now.
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Safety Needed When Working on Rooftops

June 13, 2011
Safety is a priority when working on any mechanical equipment, but it is especially heightened when the equipment weighs several thousand pounds and is located on a roof. Some contractors schedule days and weeks on the installation and service for one client alone.
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Btu Buddy 97: Defective Compressor or Four-Way Valve Problem?

April 18, 2011
Bob has been sent on a service call where the customer is complaining about her power bill. She thinks that the heat pump may be the problem. Her power bill is much higher than last year. She explained this to Bob and he started by asking a question, “Does the auxiliary heat light come on very often on your thermostat?”
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Ice Breaker: Testing Your Tools to Make Sure They Work

April 4, 2011
Accurately troubleshooting and repairing refrigeration systems requires technicians to use many specialty instruments. They base many of their diagnoses on what is read from these instruments. Relying on them to be consistently accurate day in and day out is a must. If these tools are inaccurate, more than likely the diagnoses will be inaccurate.
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The Professor: More Ice Flake Machine Troubleshooting

April 4, 2011
This article is part two of a two-part series on ice flake machine troubleshooting.  The last article, which appeared in the Feb. 7 NEWS, examined troubleshooting low and high water levels. This article will examine water impurities and mechanical problems.
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Btu Buddy 96: Motor and Circuit Protection

March 21, 2011
Bob and Btu Buddy were on a service call yesterday where the compressor motor was running overloaded due to internal load; the bearings were dragging or worn. Btu Buddy told Bob, “Motor overload protection and circuit protection are subjects that need to be discussed later.” They’ve gotten together today for that discussion.
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Ice Breaker: Tricks of the Trade

March 7, 2011
While repairing refrigeration equipment, technicians sometimes come up with unique methods of solving problems. Many of these are used again and again and become known as “tricks of the trade.” When a bunch of technicians get together, they oftentimes enjoy sharing new tricks they learned or developed recently. It’s like a badge of honor.
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The Professor: Compressor Amperage Data

March 7, 2011
My Feb. 7 column focused on ice flake machine troubleshooting. I will have more to say on that specific topic in my April 4 column. For this column, I want to take a look at amperage as it relates to HVACR compressors.
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Troubleshooting Challenge: A Rooftop Unit That Won't Shut Down

March 7, 2011
In this month’s troubleshooting situation, our customer has called to say that the older package unit that heats and cools his office is managing to warm up the area, but then seems to cool down too much before providing heat again. When you arrive, the first thing you note is that the indoor blower motor is operating, and you check the fan switch setting on the thermostat.
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Btu Buddy 95: Compressor Motor Overload

February 21, 2011
Bob got a call from the dispatcher to go to an office building that has a 3-ton heat pump compressor that has been shutting off after startup. The fan would continue to run. The building maintenance man said that he had observed the shutting down of the compressor several times.
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2014 MCAA Annual Convention

Scenes from the 2014 MCAA Annual Convention in Scottsdale, Ariz.

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Kyle Gargaro, editor-in-chief of The NEWS, hosted the 2014 ACCA CEO Forum. At the event, six well-known, highly respected company executives, Gary Michel, Ingersoll Rand/Trane; Chris Nelson, Carrier Corp.; Chris Peel, Rheem Mfg. Co.; Rod Rushing, Johnson Controls; Brent Schroeder, Emerson Climate Technologies; and Doug Young, Lennox; provided individual industry outlooks and fielded questions directly from attending contractors. Listen to the entire event on the NEWSMakers podcast. Posted on April 14.

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