August 2018

Oil pressure controls, oil failure controls, oil safety controls… They’re a pain in the neck when they trip, and diagnosing those problems can really tax even the best of techs. As semi-hermetic compressors get larger, they can no longer rely on simple splash or “sling” type lubrication strategies where oil is just flung around inside […]

How does a vacuum pump work? When should you change the oil? What does that oil do anyway? We answer these questions and more in this episode

Some tips for HVAC/R service valves and caps for new technicians

Jamie Kitchen is back on the podcast talking all about TXV / TEV bleed and non-bleed and why it matters to your compressor

We cover why both compressor and evaporator superheat matter as well as address some common confusion related to each.

This is Part 4 series by Senior Refrigeration Tech (and prolific writer) Jeremy Smith. Pay attention to this one, folks. I know rigging and safe lifting practices may be boring to some of you, but it could very well save your back or your life. Disclaimer This article is written by a technician representing his […]

We talk evacuation, conductance speed, microns, core removal, decay rate and all that other nerdy vacuum stuff with Jim Bergmann

This is Part 3 series by Senior Refrigeration Tech (and prolific writer) Jeremy Smith. Pay attention to this one, folks. I know rigging and safe lifting practices may be boring to some of you, but it could very well save your back or your life. Disclaimer This article is written by a technician representing his […]

Can you really freeze water in a vaccum by pulling down too fast? what should you do about it?