Refrigeration Vessels and Safety Devices
EXCERPT FROM Tecnical Institute Manuals available from the RSES Online Store
safety
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Working With HVACR Condenser in Cold Climates
Special considerations must be taken when installing condensers in cooler climates. During the colder weather, a winterizing valve should be utilized to maintain head pressure. This valve is actuated by a pressure difference between its inlet and outlet. The figure shows a “Winterstat” brand. Other valves may be used such as a “Headmaster” valve. If …
Side-Cutters with Wire Stripper and Crimper – YouTube
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HYDROCARBON Refrigerants Training
Before servicing any system, check the compressor and system labeling to determine whether the system being serviced contains a flammable refrigerant.A compressor designed for flammable refrigerant use should have the refrigerant designation printed on the compressor serial label, and may also display a separate flammable refrigerant label (see below): Compressor with: (1) serial label, (2) …
Troubleshooting Frozen Food Cases/content from Contracting Business
Most supermarkets have a considerable number of glass door display cases. This article will focus on frozen food cases that use direct expansion evaporators, and that are connected to supermarket rack systems that use HFC refrigerants. READ MORE Source: troubleshooting frozen food cases begins with assessment of saturated suction temp | Refrigeration content from Contracting …
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How To Troubleshoot HVACR Electrical
Be prepared-remember that good troubleshooting requires a thorough understanding of the basics. The service engineer should know the normal system operation, since a large part of troubleshooting is visualizing what is happening throughout a system. One tool to aid the troubleshooter in understanding the system is the electrical flow chart provided by many equipment manufacturers. …
Meter Safety Reminders
Electrical meters are so commonly used by service technicians that most take them for granted. Rarely are meters considered a source of potential danger. But the electrical meter, being as versatile and easy to use as it is, can very easily become the path of current between the power supply and the technician! In most …
Checking The Insulation On Your Tools
http://www.youtube.com/watch?v=GGgYnZKqLSI