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Type: Posts; User: AHRteechur

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  1. Replies
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    IMHO a megohm scale on a DMM is not very useful. ...

    IMHO a megohm scale on a DMM is not very useful. You need a megger (megohmmeter) that is going to put out at least 500V to test motor windings. I don'r know how many times I have had a grounded...
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    3,232

    Tell the Ass't manager to turn off the lights. ...

    Tell the Ass't manager to turn off the lights. That should fix it:rolleyes:
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    556

    check out the iom on this web site. It says the...

    check out the iom on this web site. It says the sensor is in right location. You may have to cut a jumper, depending on your application. Good Luck
    http://www.climatemaster.com/index/res_ioms
  4. Mini split is the way to go if you want quiet. ...

    Mini split is the way to go if you want quiet. PTAC's & PTHP's can be noisy.
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    http://www.rbiwaterheaters.com/index.asp Go to...

    http://www.rbiwaterheaters.com/index.asp
    Go to Products and choose which Futura you want
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    Wire it up this way and you should have no...

    Wire it up this way and you should have no problem:
    Red=24V Hot
    White=heat
    Yellow=compressor
    Green=fan
    Orange= reversing valve if energized in cool mode
    Black = reversing valve if energized in...
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    949

    Grady White is right. The cap helps the motor...

    Grady White is right. The cap helps the motor develop torque. If the cap is going bad, then the motor will draw more current to get the required torque.
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    Nuts 2 nut drivers!

    Anybody who doesn't use a cordless drill,except for a few screws, is looking for trouble. Wearing splints or braces or going for physical therapy for "tennis elbow" when you never played tennis is...
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    Reset the power to the AHU. There maybe a...

    Reset the power to the AHU. There maybe a lockout relay in the fan start circuit.
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    739

    Yes, the liquid line solenoid is probably OK. A...

    Yes, the liquid line solenoid is probably OK. A scroll compressor will not hold back the high side from the low side on shut down like a recip will. That is why you need a check valve in the...
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    739

    Just did a Google on this. Check out this link...

    Just did a Google on this. Check out this link about pump down and scrolls.
    http://www.hvacrinfo.com/scroll_trouble.htm
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    What kind of compressor is it? If it's a recip,...

    What kind of compressor is it? If it's a recip, you may have bad valves or head gasket is cracked allowing high side to leak back into suction on shut down. Try closing off suction service valve,...
  13. Thread: Instructing

    by AHRteechur
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    791

    I teach the 2nd year courses, only full time. If...

    I teach the 2nd year courses, only full time. If you have access to computers, check out the Clarity Co, HVACR training programs. If you teach Hydronics, then Modern Hydronic Heating by John...
  14. Thread: testo 410-2

    by AHRteechur
    Replies
    2
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    725

    Find the cross section area of the duct. Multiply...

    Find the cross section area of the duct. Multiply the fpm reading of your instrument by the square foot area of the duct to get cfm. Make sure you convert the duct area from square inches to square...
  15. U.A. all the way! Good benefits, good retirement....

    U.A. all the way! Good benefits, good retirement. Life is good!
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    It might not hurt the compressor, but it sure...

    It might not hurt the compressor, but it sure won't help it any. Why throw stuff at it when it is not helpful but may be detrimental. K.I.S.S. (Keep It Simple, Stupid)
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    Not necessary to have filter drier in discharge...

    Not necessary to have filter drier in discharge line. A filter drier absorbs moisture best at lower temperatures so it will not be effective at higher discharge gas temperatures.
  18. Most large name companies will take on any body's...

    Most large name companies will take on any body's equipment to service. They are no different than your present company. I have worked for a large multi-national that would have you working on a...
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    Riddle me this?

    Here's a question from a NATE exam review book:
    "Which of the following compressors is most "liquid slug" tolerable?"

    Reciprocating
    Scroll
    Compliant scroll
    Rotary

    The author says "B"...
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    Is the great room isolated from the rest of the...

    Is the great room isolated from the rest of the house? I would leave the door(s) open to the great room and bedrooms open for a couple of days to see if makes any difference. If you notice a...
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