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Home » maintenance for HVACR

Articles Tagged with ''maintenance for HVACR''

Under-Performing Heat Pump.

Troubleshooting Puzzle: An Under-Performing Heat Pump

Jim Johnson
February 5, 2021
In this troubleshooting situation, the customer’s description of the problem is that the unit is “running a lot, and not keeping the building warm.”
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This diagram shows the forces of the TXV's flexible diaphragm.

Make Sure the TXV Remote Bulb Is Properly Placed

Poor thermal contact with the suction line can cause problems
John Tomczyk
January 26, 2021
This article will explore the remote bulb and its proper placement on a system’s suction line.
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Uncapped Tube End

Always Protect Your Refrigerant Tubing

Keep the end caps in place in order to keep out contaminants
Joe Marchese
January 26, 2021
It is much easier to prevent containments from entering a system then to deal with removing them or the system failure they will cause.
Read More
Figure-One-Jim-Johnson

Troubleshooting Puzzle: A Heat Pump with a Frosted Outdoor Coil

January 12, 2021
Your troubleshooting situation this month involves a complaint from a customer about their heat pump that’s not working.
Read More
Troubleshooting-Puzzle

Troubleshooting Puzzle: A Gas Furnace That’s Not Heating

Jim Johnson
December 11, 2020
Your troubleshooting situation this month involves an 80% single stage gas furnace that has been in service approximately seven years.
Read More
Bearing Maintenance.

Ten Tips for Proper Bearing Maintenance

Bearing maintenance will ensure a long service life and help prevent failures
Chris Johnson
December 2, 2020
Bearing maintenance will ensure a long service life, preventing many common issues that can result in failure and costly downtime.
Read More
Compressors

Take the Time to Thoroughly Inspect Compressors

Detailed assessments can reveal issues that may lead to compressor failure
Joe Marchese
November 22, 2020
Performing a more detailed inspection of a compressor might reveal a system issue that could lead to a failed compressor.
Read More
An internal cut-away of the low ambient control valve.

Cold Weather Control of Condensing Units

Frigid conditions require low ambient controls to ensure optimal performance
John Tomczyk
November 21, 2020
Condensing units that are exposed to low ambient conditions must have some sort of low ambient control installed on them.
Read More
Wiring-Diagram

Troubleshooting Puzzle: A Chilly House

Jim Johnson
November 6, 2020
In this troubleshooting situation, the equipment is a gas pack, and the resident has called for service because the building “isn’t warm at all.”
Read More
Duct Dynasty

Six Tips to Improve Static Pressure Measurements

Technicians can overcome frustration and doubt when learning this new skill
David Richardson
David Richardson
September 20, 2020
There are many technicians who have been measuring static pressure for a long time, and they have tips to make your life easier.
Read More
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