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Thread: McQuay Chiller

  1. #1
    I have a McQuay Chiller PEH063 that had RL-68H Screw Oil put in it. It call for EAL 46 Chiller oil. What would happen, and What could I Expect?

  2. #2


    I'd definetly change the entire oil charge to OEM recommended oil. Also change the oil filter. The OEM's have their reasons for specific oil. There is a chance that the oil uses different additives that could prove detremental (i.e. gumming up etc.) Too expensive a piece of equip. to take a chance.

  3. #3
    Go to, (public site) and you can probably download the literature for that unit,look for a revised OM\IM. They also have some free design tools there if they are still available. Psych tool,Pipesizing tool and duct sizing tool.

  4. #4
    Join Date
    Dec 2003
    Kenilworth New Jersey
    If it`s still using R12 Suniso 4GS is the oil to use

  5. #5
    Join Date
    Nov 2004
    up in the hizzy
    if you dont find the literature at the mcquay site post your fax # and I'll send it to you.

  6. #6
    Join Date
    Feb 2003
    Wichita Ks
    go with what the chiller calls for. i would change it, run it for a short while and change it again. the oil it uses is not cheap and the oil filter is real expensive. i would not change the filter until you get the wrong oil out. if a contractor put the wrong oil in i would let them pay for it.

  7. #7
    Join Date
    Apr 2004
    Looks like McQuay service is going to get some work? Woot

  8. #8
    Join Date
    Feb 2004


    Eal 46 oil is for R-134A refrigerant so I am assuming that your machine has 134a in it since you did not state so, change the oil and run for 24 hours and then change again. take an oil sample and have it tested and let it dictate if ok since McQuay oil or any factory oil is so expensive!!!! if you have R-12 refrigerant then use 4GS oil and do the same proceure.

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