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  1. I made my own removal tool, it looks like the...

    I made my own removal tool, it looks like the larger one for all the other impellers. this one is smaller and fits the threads of the impeller and jacks it out.
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    what I do when I have the oil line off is I put a...

    what I do when I have the oil line off is I put a 1/4" copper in where the oil line would be and suck all the oil out of the existing compressors. that will at least help get any dirty oil out. I...
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    circuit 1 is column C circuit 2 is column D ...

    circuit 1 is column C circuit 2 is column D for a als140


    Table II: PSID Condenser & Subcooler Coil Combination Pressure Drop
    Code Letter (@ 60 Hz)
    Circuit
    Capacity A B C D E F ...
  4. what is the fault shown on the benshaw board? are...

    what is the fault shown on the benshaw board? are you clearing the fault only on the mt2 controller?
  5. the last one I did my 800 ftlb impact would not...

    the last one I did my 800 ftlb impact would not get it loose. I broke a 1/2" break over bar. I then bought a 3/4 allen 3/4 drive, a 52" 3/4 drive break over bar with a cheater. I got it and the...
  6. I would replace all drier cores. you should have...

    I would replace all drier cores. you should have 2 exv's on the machine. possible one isn't working or sticking. make sure compressor is loading properly. check your amps at 25, 50 ,75 and 100...
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    the other issue would be how accurate is his...

    the other issue would be how accurate is his gauges and thermometer.
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    i am not talking oil sump assembly. just the...

    i am not talking oil sump assembly. just the sight glass assembly. you can buy a repair kit that includes all the rubber gaskets or the sight glass complete.
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    there is 2 different length sight glass. some...

    there is 2 different length sight glass. some will unscrew from the outside and the older tall ones you must remove the top with oil pump attached to it to replace sight glass, those have a nut...
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    check discharge temp sensor, discharge pressure...

    check discharge temp sensor, discharge pressure transducer, electronic expansion valve operation, economizer maybe setup wrong if it has one. this is a start
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    oil can be lost several ways. they are manuals...

    oil can be lost several ways. they are manuals for overhauls and they will not be in the regular manual. system needs to be checked out by someone that knows these chillers. you should be there also...
  12. your suction pressure is 34psi that has a...

    your suction pressure is 34psi that has a saturation temp of 38.9f. your suction temp is 47.
    thats about 8 degree super heat which is too high. your discharge superheat will come down once suction...
  13. by those readings suction super heat is too high,...

    by those readings suction super heat is too high, sub cooling is too low. tower water is on the warm side. but don't go by that unless all sensors has been verified accurate.
    high condenser pressure...
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    how did you determined the compressor is bad?...

    how did you determined the compressor is bad?
    which vintage of chiller is it?
    Daikin does not have classes on that vintage of chillers any more.
  15. my freezer has the condenser tubes attached to...

    my freezer has the condenser tubes attached to the sheet metal cabinet on the inside where you can not see it. sides will get a little warm. just don't pack stuff right up against the sides. needs...
  16. sounds like a front end overhaul is needed. It...

    sounds like a front end overhaul is needed. It would need further testing. i would do overhaul anyway if it has been a while since opened up.
  17. maybe thermistor card, swap it out with another...

    maybe thermistor card, swap it out with another one and see if problems follow. also I had several that the leads to thermistor internally in the compressor would short out on sharp edges of casting...
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    i have had the check valve stick open before by...

    i have had the check valve stick open before by large oil filter preventing oil pressure build up. it was just short cycling back to oil pump.
  19. looks like there is a suction drier installed in...

    looks like there is a suction drier installed in the wrong place.
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    never heard or seen any. would not pay for anyone...

    never heard or seen any. would not pay for anyone to make them to sell, not enough of them.
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    chill water tubes fouled? strainer dirty? I had...

    chill water tubes fouled? strainer dirty? I had one a few months ago on a 30gx that i started up over 10 years ago and the customer didn't know the strainer existed. they cleaned it and made a world...
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    make sure motor cooling solenoid valve isn't...

    make sure motor cooling solenoid valve isn't stuck open. try lowering the 20% exv at start up to 10 and give it a few tries.
  23. the latest software will help get rid of exb comm...

    the latest software will help get rid of exb comm alarms, they normally clear them selves after reboot is complete.
    as far as high pressure switch, the high pressure switch powers a relay then the...
  24. generally the "high pressure mech" is caused by...

    generally the "high pressure mech" is caused by high pressure. you did not give a model number of which chiller you have. you can look at the wiring diagram to see what is wired in series with hp...
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    heat does it, someone probably been resetting...

    heat does it, someone probably been resetting alarms over and over. motor solenoid valve may have failed, drier plugged.
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    if you have 2 ohms between windings and you are...

    if you have 2 ohms between windings and you are getting 230k to ground on one winding then the other winding will be grounded also. time for a tech to verify.
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    602231

    602231
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    could be a simple 2hr repair, seems like more and...

    could be a simple 2hr repair, seems like more and more companies only wants to sell equipment.
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    that would be a 079..

    that would be a 079..
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    sent

    sent
  31. Replies
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    oil pressure should be 12 or above depends on...

    oil pressure should be 12 or above depends on vintage. newer ones should be 18 or higher. you have 5 assuming you used same gauge. what is your question?
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    check with Carrier National Service in Houston.

    check with Carrier National Service in Houston.
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    aws is in a well, small screw in the side you...

    aws is in a well, small screw in the side you need to loosen to get out.
    als is not submerged, it is in the bottom through a hole in the casting. oil separator has a wrap around.
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    you would also need to know the btu rating of the...

    you would also need to know the btu rating of the gas your getting.
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    I still remember installing GE units. I bought a...

    I still remember installing GE units. I bought a 18" crescent wrench for those roto lock fittings and the first time I used it I still had to put a cheater on it. they were using pressure...
  36. the problem with checking in the duct is if you...

    the problem with checking in the duct is if you did have a crack the positive pressure around the heat exchanger would blow any fumes out the front of the furnace or if small enough up the flue.
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    heat will cause it to melt. this is not a diy...

    heat will cause it to melt. this is not a diy site.
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    I have by heating the copper with a torch and...

    I have by heating the copper with a torch and allowing to cool off, then it will flare ok.
  39. I found a manual on that vintage of machine that...

    I found a manual on that vintage of machine that has wiring diagrams in it. send me your email and I will send it to you.
  40. which control panel does it have?

    which control panel does it have?
  41. who at McQuay did you contact? No diagram on any...

    who at McQuay did you contact? No diagram on any of the 5 units?
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    back in the 80's Coleman had a bunch of...

    back in the 80's Coleman had a bunch of capacitors when test were ok, when compressor started the capacitor opened up and stayed open til compressor shut down. a lot of hard start kits were installed...
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    the exv will not cause that alarm. if the...

    the exv will not cause that alarm. if the controller does not see 6psi drop in 16 seconds then it will show no pressure drop. even if the exv is stuck open the compressor will still drop suction...
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    most of the time I find that the 5vdc relay that...

    most of the time I find that the 5vdc relay that brings on compressor is not working all the time. does it do it while it is running or trying to start?
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    i have that manual if needed.

    i have that manual if needed.
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    since the 2 fans pull from the same area replace...

    since the 2 fans pull from the same area replace the other fan also, at least they will be the same vintage. the only way you will know about the rpm is put a tach on it. at least you would know how...
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    eyes can play tricks on you, after taking the...

    eyes can play tricks on you, after taking the above advice put a tach on it to see what it is actually doing and compare with new motor. same fan blades? and are they positioned the same?
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    this is not a diy site.

    this is not a diy site.
  49. Thread: Daikin

    by freonrick
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    3,512

    they do not make the motors, only the compressor...

    they do not make the motors, only the compressor for it.
  50. Thread: CARRIER 30HX

    by freonrick
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    6,379

    if the motor was already too hot when you put...

    if the motor was already too hot when you put magnet on solenoid valve then the heat from motor went into compressor rotors and on out. the sensor needs to be in the windings. it can be done but it...
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