Most refrigeration equipment breakdowns are repeat problems to some degree. The purpose of this article is to cover the higher percentage problems and repair procedures of TEVs in supermarket applications.
This article is the second installment of a two-part series. Part One provided some background on screw compressors, then discussed the various components and capacity control methods. Part Two discusses maintenance of the screw compressor.
Screw compressors can be either twin helical screws or a single screw design. They can be open drive, semi-hermetic, or hermetic in configuration. In addition, there are oil-flooded compressors and non-oil (dry) compressors.
Flame rectification is vital knowledge for gas heat troubleshooters. This article deals with flame rectification as it applies to direct spark ignition (DSI) modules.
This article is intended to give you a general overview of piping design considerations and to help you to determine when you might need to take extra measures during an installation.
A clean motor is a happy motor. As any service technician knows from experience, contamination is one of the leading causes of premature motor failure.
Photos from the 2013 ACCA Conference & IE3 Expo in Orlando, Fla.
Podcasts
Cade Clark, assistant vice president of government affairs for the Air-Conditioning, Heating & Refrigeration Institute (AHRI), gives a brief overview of the new version of the Shaheen-Portman bill, what AHRI thinks of the energy-efficiency legislation, and how it might affect the HVACR industry if it becomes law.
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