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  1. Replies
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    This is a sealed loop.

    This is a sealed loop.
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    216

    Where does the water go?

    We take care of a couple of little Kraus chillers for some MRI machines. We have had to add a little water (perhaps a gallon or two) to them a few times because the suction side of the pump goes down...
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    What company is that from?

    What company is that from?
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    Top section of indoor coil dry

    Lennox, 13CHPA-36-230=1A, S#1607K07565, package heat-pump.
    Reported problem: Not keeping up in the afternoon. Goes to a bank in a supermarket.
    Outdoor 105*, outdoor RH 22%, indoor at stat 78*,...
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    1,092

    Yes, I found out: don't turn on the compressor if...

    Yes, I found out: don't turn on the compressor if there's cleaner in there. Froze up solid in no time. haha.
  6. Excellent info, thank you.

    Excellent info, thank you.
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    Your market experience and attitude makes you a...

    Your market experience and attitude makes you a valuable person to other areas of this field.
    I too liked markets because they were complex and important. I did supermarkets for 20 years. It beats...
  8. Follett ice machine intermittently trip drive amps.

    We have just started taking care of 50+ Follett ice machines in a hospital complex. We get a lot of calls with drive amp trips. Sometimes it has been just ice backing up in the transport tube for a...
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    I see amps the same as you see. They seem to be...

    I see amps the same as you see. They seem to be very picky units. They must make their money on selling bearings.

    I have been finding on some Follett machines if the tube is not perfect; If it...
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    Was there some issue with power stealing? I see...

    Was there some issue with power stealing? I see most honeywell stats allow batteries and say Common is optional if you have batteries.
  11. Thread: PM check list

    by mccann
    Replies
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    1,003

    Perhaps they know it is ridiculous, but it keeps...

    Perhaps they know it is ridiculous, but it keeps the pressure on the workers to move faster and find a way. Perhaps they just don't have time or skill to take such things into consideration. ...
  12. Thread: PM check list

    by mccann
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    1,003

    The reason for these check lists is because of...

    The reason for these check lists is because of the many, very large, national, 3rd party, management companies managing large properties from a distance. Our corporate sales people talk to their...
  13. Thread: C Vs Z charge

    by mccann
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    371

    The z charge is for low temp. If it's working, be...

    The z charge is for low temp. If it's working, be thankful. If it's not. Check if you got enough liquid there first. If it's on a system, Valve off other units to see if refrigerant feeds better to...
  14. Thread: PM check list

    by mccann
    Replies
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    1,003

    PM check list

    What do you guys think when they give you little time per unit and a PM check list from the customer that asks for amps of everything, pressure safeties tested, superheats and lots of other things?...
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    One less likely possibility; How is the...

    One less likely possibility; How is the superheat? I had a package unit years ago fling water past the pan because the coil was not being feed evenly. It was dry in sections and water seemed to blow...
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    As to the original question; how long before...

    As to the original question; how long before damage? It depends on the humidity at the time, how open open was, how saturated with refrigerant the oil was, the condition and quality of the drier. ...
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    I don't know. You never really know. I like to...

    I don't know. You never really know. I like to have a core removal tool handy with the core remover stem taken out. If refrigerant starts blasting, you can put the removal tool over the schrader,...
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    The more they want to change, the more we make...

    The more they want to change, the more we make money.
    Robots will build it so well, it will never need service.
  19. Some units reheat by having a secondary condenser...

    Some units reheat by having a secondary condenser coil in the supply. I thought that cool.
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    Assuming motor is good, coil is clean, pressure...

    Assuming motor is good, coil is clean, pressure control is working correctly, wiring is tight; Data-Aire seems to have this issue; like the P66 is not fast enough on a cold night, when your not...
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    I've saw a big piece of sheet metal blow off the...

    I've saw a big piece of sheet metal blow off the roof up into the power lines and take out the whole building. Does that count?
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    Supplement your formal learning with Youtube...

    Supplement your formal learning with Youtube videos. Although a lot are terrible, some are ok, and anyway, it gets you a view of moving through equipment and the terminology that's out there. Just...
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    I have had intermittent low pressure alarms on a...

    I have had intermittent low pressure alarms on a Liebert. New board and switch. Pressure is good. All that is left is the wiring plug or gremlins. Next time all will have some electronics cleaner...
  24. Belimo makes one they advertise with zip-code and...

    Belimo makes one they advertise with zip-code and easy read trouble shooting and alarm. I have not seen one yet. Honeywell liked to make things as unclear and difficult as possible in the past. I...
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    Is that all you got to say? ha ha, very good.

    Is that all you got to say?
    ha ha, very good.
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