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Type: Posts; User: salesslime

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  1. Replies
    3
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    583

    Quality heat pump

    After 14 yrs one of my Goodman HP's locked up the compressor.
    Havent had a minutes worth of trouble since new so I've gotten my moneys worth.
    Havent been on residential side for many years so lost...
  2. Replies
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    461

    Signal question

    Have a 4-20 mA signal with a 250 ohm impedence. The position controller
    takes a 4-20 mA sinal with 160 ohm impedence.

    Will it work and how does the impedence play a role in this?
  3. Replies
    19
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    15,549

    These type systems are only new to U.S. Been in...

    These type systems are only new to U.S. Been in Asia and Europe for years. As stated, proper start-up is key.
    The few people I know that work on them say service calls
    are few and far between. The...
  4. Thread: WDC 087

    by salesslime
    Replies
    6
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    694

    Sounds like its running a little dry but dont...

    Sounds like its running a little dry but dont trust the
    Microprocessor readings if its the original Series 100
    controller (take the readings by hand).
    You're going to have to get some load on it...
  5. Replies
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    948

    Whats your discharge superheat running at night?

    Whats your discharge superheat running at night?
  6. Replies
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    7,157

    Richard, If any of the non retiring guys are...

    Richard,

    If any of the non retiring guys are looking, a buddy of mine
    in Atlanta is looking for a self motovated service guy.

    Let me know and I'll try to hook them up.
  7. Replies
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    563

    "TC" is normally and evaporator number. There...

    "TC" is normally and evaporator number. There should be another plate somewhere with the model on it but if its a centrifugal its not going to get it close.
  8. Replies
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    1,829

    Better check that net oil pressure. It should be...

    Better check that net oil pressure. It should be 100-110#
    net (gauge psi verses suction psi)
  9. Replies
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    2,054

    It has instructions but very difficult to install...

    It has instructions but very difficult to install without knowledge of the controllers and software.

    MTech II will record alarms (type; time) but you have to
    pull that days trend to get info at...
  10. Replies
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    2,054

    15" wont be but in the 11" is fine except for us...

    15" wont be but in the 11" is fine except for us almost blind guys.

    You should upgrade all software in controllers and OITS II
    to the latest and greatest.

    Kit from parts should have all...
  11. Replies
    19
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    2,054

    15" flat touch screen coming soon :)

    15" flat touch screen coming soon :)
  12. Replies
    24
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    1,829

    Theres no way to tell when the vanes are fully...

    Theres no way to tell when the vanes are fully open during operation. Some compressors the vanes are not fully open at 100% and other some conditions vanes are fully open but not at 100% motor...
  13. Replies
    19
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    2,054

    They won't talk on same bus at this time. CSM...

    They won't talk on same bus at this time. CSM will talk with MTech II but can only operate older MTechs with contact closures.
  14. Thread: Mcquay

    by salesslime
    Replies
    58
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    5,141

    Where exactly are you? The "spark plugs" are...

    Where exactly are you?

    The "spark plugs" are the motor terminals. Why do do think the motor starter is bad?
  15. Thread: Mcquay

    by salesslime
    Replies
    58
    Views
    5,141

    Leave power on. This will prevent refrigerant...

    Leave power on. This will prevent refrigerant migration to oil and also allow unit to run if needed.(remember the 24 hr
    time for heat-up).

    A T-stat or Enhanced Surge Protection could be added as...
  16. Thread: Mcquay

    by salesslime
    Replies
    58
    Views
    5,141

    How long has chiller been off when you try to...

    How long has chiller been off when you try to start it?

    I agree with the hot equipment room scenario. Default on surge is 54 degrees I believe but it not unusual for it to be raised to compensate...
  17. Thread: Mcquay

    by salesslime
    Replies
    58
    Views
    5,141

    #2 is either a vane speed issue as mentioned...

    #2 is either a vane speed issue as mentioned above or its flooding back which would also act like that. Whats the delta T on evaporators on #1 and #2?
    Check discharge superheat with liquid injection...
  18. Replies
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    2,293

    The AGZ is a very reliable and easy to work on...

    The AGZ is a very reliable and easy to work on chiller.
    It uses Copeland scroll compressors and R-22 refrigerant.

    The MTech II controls are OEM but well documented and any information needed is...
  19. Replies
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    1,496

    Duke, How many man hours was in this overhaul?

    Duke,

    How many man hours was in this overhaul?
  20. Replies
    9
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    996

    Sounds like that $8.00 gasket is gonna end up...

    Sounds like that $8.00 gasket is gonna end up costing 100K.
  21. Replies
    7
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    1,092

    I do not believe that Tridium is backward...

    I do not believe that Tridium is backward compatible with the Series 200 or 100 MTech I controls yet but I could be wrong.

    The MTech II upgrade involves installing the current control panel that...
  22. Yokogawa/Bacharach works great. Installed maybe...

    Yokogawa/Bacharach works great. Installed maybe 10 over the last five yrs with no problems. We've had all kinds of problems with MSA.
  23. I think most of the early failures were due to...

    I think most of the early failures were due to electronics.

    Turbocor came out with the 3N1 boards which greatly increased the reliability of compressor and reduced failure rate to almost 0. I...
  24. Replies
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    1,709

    I believe the 3200 (along the the frame 4) are...

    I believe the 3200 (along the the frame 4) are the 134a compressors which have shown to be very reliable and robust.

    It is European design and been used over there before being introduced in...
  25. Replies
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    3,134

    I think the key (if I'm reading it right) is the...

    I think the key (if I'm reading it right) is the chiller sometime trips on these things when its NOT running.

    I could see it tripping on high motor temp in the off cycle but never low oil...
  26. Replies
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    3,134

    If its a series 100 controller, I suspect the...

    If its a series 100 controller, I suspect the daughter board is the problem.
  27. Replies
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    633

    Anybody have any experience with the above...

    Anybody have any experience with the above monitoring offering? Sounds like a good idea if its proactive to impending problems on equipment. Does it reduce price of
    Inspection Agreement enough to...
  28. Replies
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    3,109

    What type of fuse are you using?

    May be wrong rating
  29. Replies
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    1,105

    You're looking at roughly 180K for two air cooled...

    You're looking at roughly 180K for two air cooled 250 ton chillers plus installation. If your pumps and tower are in good shape, I believe a water cooled chiller is going to be the lowest first cost...
  30. Replies
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    1,974

    I'd consider changing out the motor control...

    I'd consider changing out the motor control relay(s). Have had problems with contacts in control circuit. Also had the new space age composite mechanical interlock hang and keeps it from making...
  31. Replies
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    3,198

    Whats everybody's opinion on this?

    Whats everybody's opinion on this?
  32. Replies
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    2,320

    Lew2, You still with McQuay?

    Lew2,
    You still with McQuay?
  33. Replies
    21
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    2,320

    Cant you just spin piston so diffuser block arms...

    Cant you just spin piston so diffuser block arms are on a smooth spot? ?The compressor had to sound like a moose in heat at low loads for awhile to wear piston down that bad.
  34. Replies
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    1,499

    Make that a "semi" hermetic. Got my soon to be...

    Make that a "semi" hermetic. Got my soon to be new truck on my mind :)
  35. Replies
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    Anybody ever had a oil pump on 40-60 hp hemi...

    Anybody ever had a oil pump on 40-60 hp hemi hermetic recip have a " vapor lock" and not pump oil(0 psid). This occured on a replacement compressor on start-up. Compressor had proper oil charge.
    ...
  36. Replies
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    1,901

    Where's chillermech when do need him? You're...

    Where's chillermech when do need him? You're probably having a intermittent bad connection on the MCB board. Clean terminals and re-seat wires in connector.
  37. Replies
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    1,242

    E-mail resume to hvacservice@juno.com and I'll...

    E-mail resume to hvacservice@juno.com and I'll pass it along to some associates in the trade.
  38. Replies
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    1,242

    What part of NC?

    What part of NC?
Results 1 to 38 of 38
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