Copeland scroll not happy on walk in cooler.

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22 thoughts on “Copeland scroll medium temp fun.

  1. 404 Refrigeration & HVAC Services says:

    Great video Dave. What I really like is how you don't skip any steps in a diagnosis (and I've made those mistakes, so talking from experience). You focussed in on the condenser and it didn't look too bad, but as soon as you saw high head pressure you went back to the basics and cleaned the coil, so that could be checked off the list. As a refrigeration mechanic, I would estimate that 8% – 10% of the problems I deal with in refrigeration is caused by poor air flow through the condenser coil. Good call on cleaning the condenser coil, it lead you to looking closer at the high side and low side pressures while looking at compressor amp draw. This gives you a more clear idea of what is going on with the compressor.

  2. Jeff Hall says:

    Funky problem, your suction and head are high at first glance. Do you have a door open?, or a large leak in the box? Are they doing the normal of putting hot moist food in the box? Or, do they have a fan blowing air across the floor in the kitchen forcing hot moist air into the cooler when the door is open? It's happened to me before where they hold the door open too long, or the door closer holds the door open about two inches and fugs things up, because it is all ready sprung and instead of closing the door, it holds it open. Let me know what you find.

  3. behrooz735 says:

    Dear, it is a bit too late to write a hint, however I did not see the follow up videos, so here it is: you have this problem of refrigerant flow, so the original installer just kept charging the system (130 oz or more!) that is why the head pressure looks fine, the suction looks not bad!!(8 degree over but still sub zero) and amperage low! Good luck.

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