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Mark Roth
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Tech Tips written:

Compressor Failure Diagnostic Checklist
Industry data shows that up to 40% of compressors returned under warranty have no fault found. Technicians often blame the compressor when another component is the root cause. This checklist is designed to help you definitively confirm compressor failure, saving time, money, and unnecessary replacements. Let's make sure it's truly bad before we cut it […]
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Refrigerant Recovery Cylinder Fill Calculations Simplified
This tech tip was written by Eric Kaiser from TruTech Tools. Thanks, Eric! Filling refrigerant recovery cylinders is a task HVACR technicians perform regularly, but figuring out how much refrigerant to safely put into a cylinder can still be confusing. The challenge almost always comes back to refrigerant density or specific gravity. Specific gravity, also […]
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A Liquid Line Solenoid and What it Does
Depending on what segment of the business you are in and your location, you either work on pump-down solenoid systems all the time, or YOU HAVE NO CLUE what a liquid line solenoid is. A liquid line solenoid valve (LLSV) is just a valve that opens and closes; it has a magnetic coil. Depending on […]
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Podcast guest:

Chiller and Cooling Tower Cleaning w/ Goodway (Podcast)
In today's podcast episode, Mark Roth from Goodway talks about chiller and cooling tower cleaning best practices and techniques. Goodway makes industrial maintenance equipment for the HVAC industry, especially tube-cleaning equipment. A chiller has water running through the tubes, and debris from the cooling tower can build up in the tubes. When scale or debris […]
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