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Type: Posts; User: salesslime

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  1. Replies
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    535

    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
    0
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    418

    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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    15,168

    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
    Views
    671

    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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    852

    Whats your discharge superheat running at night?

    Whats your discharge superheat running at night?
  6. Replies
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    6,800

    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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    520

    "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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    1,660

    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
    19
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    1,978

    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
    19
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    1,978

    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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    1,978

    15" flat touch screen coming soon :)

    15" flat touch screen coming soon :)
  12. Replies
    24
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    1,660

    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
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    1,978

    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
    Views
    4,922

    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
    4,922

    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
    4,922

    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
    4,922

    #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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    2,087

    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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    1,421

    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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    959

    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
    Views
    1,039

    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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    1,606

    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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    2,853

    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...
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