HVAC Basics: EPA 608 - Certification Test for Trace Gas Leak Detection on a Refrigeration System

[@realSamAndrew]

Did you say 2 wrenches one hand? Don't you hold one steady while you turn the other one with your free hand?

[@edisonhvac]

For the refrigeration trainers flared connection and the copper tubing being used they should be able to screw it on tight by hand and then use one hand to tighten the last bit with two wrenches like scissors. This prevents them from over tightening the nut and straightening out the flare. I show a demo in a filter drier project demonstration video that is one of there first projects tested under pressure. Thanks

[@realSamAndrew]

The bots found your channel! I wonder why all the bots choose this to post their bogus links? Here's a real question though: Why do you only go as high as the lower minimum pressure? Couldn't you find a sneaky leak easier with a higher pressure? One small leak that could elude a moderate pressure but only show up in extremes? Please explain, thanks.

[@james6794]

the higher number would be if the condenser coil was removed from the system and leak tested. in the video the evap and the condenser are connected together via the TXV so the entire system can only be presserized to whatever the max psi the evap can handle is

[@edisonhvac]

If we isolated the high side then we could use the higher pressure. Especially if that is where we suspected a leak after checking both the high and low sides and found nothing at first. Yes the higher pressure would find the “sneaky” leak better. On a side note: The refrigerant in this system would never get that high of pressure under normal conditions while running. Thanks.

[@realSamAndrew]

@@james6794 that makes sense, but I'm going to listen again, I thought he said you can only go to the lower side minimum, which puzzles me if true. I'll be back here after a re-listen 😉. Edit: "don't want to go higher than the lower of the two numbers on the low side test pressure" So it sounded like he said low side minimum when the intended figure is low side MAXIMUM. Correct?

[@james6794]

@@realSamAndrew correct there is no minimum test pressure on the data plate. there is a max pressure for the high side of the system and a max pressure for the low side of the system. so to sum it up there are 2 max pressures on the data plate. always use the smaller number if the system is connected together

[@earlmyers7631]

Didn’t recognize you with the mask and hair. 👍🏾

[@edisonhvac]

The mask hides all the gray hairs. 😁

[@libertarian1637]

Why is this channel recommended? I couldn’t even watch it past a minute. And good god I hope everyone is still alive given all the mask falls, touching, and shifting.

[@edisonhvac]

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