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Type: Posts; User: valentyn

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  1. Replies
    47
    Views
    7,986

    Try this www.nest.com 312701

    Try this www.nest.com



    312701
  2. Thread: No air flow.

    by valentyn
    Replies
    4
    Views
    1,458

    According owner - 4 times per 2 year.

    According owner - 4 times per 2 year.
  3. Replies
    27
    Views
    4,385

    It`s depend what you reading.

    It`s depend what you reading.
  4. Thread: No air flow.

    by valentyn
    Replies
    4
    Views
    1,458

    No air flow.

    Rich apartment in NY, customer complain - no air flow.
    Two 18000 Btu unit , no heater, no panel for close opening and no insulation on front cover on unit.
    Almost 50% air circulation inside in...
  5. Replies
    11
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    2,543

    No, it"s not the steps, this is a grill.

    No, it"s not the steps, this is a grill.
  6. Replies
    27
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    4,385

    Can you check pressure and amps on compressor in...

    Can you check pressure and amps on compressor in moment when compressor stop running.
  7. Replies
    2
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    1,042

    Chill water valve somewhere here.

    Because for me going over there is little bit difficulty , I ask my baddy go and check chill water valve on fan coil system.

    It was fun, I have to pull him out.

    ...
  8. Replies
    10
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    2,154

    Inlet Water valve may be leaking. I once had a...

    Inlet Water valve may be leaking.
    I once had a problem with this machine,sometimes valve close properly, sometimes
    water leaking through.
  9. Replies
    11
    Views
    2,543

    Why my economizer not working?

    Customer complain about economizer on big a/h.


    http://img151.imageshack.us/img151/971/20111228095519675.jpg

    http://img204.imageshack.us/img204/1608/20111228095506862.jpg

    After lot digging
  10. Replies
    5
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    969

    Try this: run condensing unit with fan motor off....

    Try this: run condensing unit with fan motor off. Build head pressure to 400 psig. Stop unit by disconnect , make sure reversing valve energize. If reversing valve leaking you might be able to hear a...
  11. Replies
    21
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    4,150

    This is unique a/h unit. NYC building on 37 th...

    This is unique a/h unit. NYC building on 37 th floor. Outside on the terrace. Rain, snow ets.
    No air filters, poor return air flow.
    Disaster.
    ...
  12. Replies
    13
    Views
    2,266

    Some "Rules of Thumb" Size supply plenums to the...

    Some "Rules of Thumb"
    Size supply plenums to the flanged opening of the blower outlet, not to the extents of the AHU or fan/coil cabinet.Supply plenum length should be 2.5 times the blower outlets...
  13. Replies
    21
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    4,150

    Why its unit leaking all time ?

    Why its unit leaking all time ? Strange :whistle:


    http://img268.imageshack.us/img268/6932/20111209114243712.jpg
  14. Replies
    12
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    1,363

    From Service Handbook: Ice Formation Pattern...

    From Service Handbook:

    Ice Formation Pattern
    Evaporator ice formation pattern analysis is helpful in
    ice machine diagnostics.
    Analyzing the ice formation pattern alone cannot
    diagnose an ice...
  15. Replies
    11
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    1,879

    Try this

    Try this
  16. Replies
    10
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    1,352

    Try this...

    Try this http://www.filefactory.com/file/ah92aad/n/TR35743_20Rev_201006_pdf
  17. Replies
    20
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    3,777

    Application Engineering Bulletin AE-1294 August...

    Application Engineering Bulletin
    AE-1294 August 1, 1992

    MEGOHM VALUES OF COPELAND COMPRESSORS

    ......There are many factors that affect megohm
    readings including contaminated refrigerant,...
  18. Replies
    8
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    987

    Start capacitor shorted ? How you tested? ...

    Start capacitor shorted ?
    How you tested?
    Most start capacitors has dielectric housing.
  19. Replies
    5
    Views
    637

    Yes, if compressor running.

    Yes, if compressor running.
  20. Replies
    20
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    3,777

    Yes, its common for 3 phase motor, if one leg...

    Yes, its common for 3 phase motor,
    if one leg short to ground other short too.

    http://www.k3pgp.org/graphics_3phase/fig2.gif
  21. Replies
    4
    Views
    1,227

    According Copeland Compressor Replacement...

    According Copeland

    Compressor Replacement after Motor Burn
    In the case of a motor burn, the majority of contaminated
    oil will be removed with the compressor.
    The rest of the oil is cleaned...
  22. Replies
    7
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    776

    Check the resistance and voltage According...

    Check the resistance and voltage
    According Copeland :

    Resistance: +-7%
    Start Wdg: 1.4
    Run Wdg: 0.59
  23. Replies
    14
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    1,265

    Definitely restriction in system.

    Definitely restriction in system.
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