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  1. Thread: Alerton

    by airworx
    Replies
    1
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    431

    Alerton

    What kohm does alerton use on thier sensors. I have an old alerton system ( about 20 yrs old ) We just picked up this account and we are not a alerton dealer. Sensor with slider 3 wire
  2. Replies
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    7,558

    broken valves, flooding, is it suction cutoff or...

    broken valves, flooding, is it suction cutoff or discharge bypass ( unloaders )
    low suction. just some ideas.
  3. Replies
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    447

    Thank You.

    Thank You.
  4. Replies
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    447

    Reliable Controls

    Need info on upgrading the firmware for mach2 controller. I have the upgrade download. Thanks
  5. Replies
    0
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    329

    Reliable Controls

    Need infor on upgrading the firmware for mach2 controller. I have the upgrade download. Thanks
  6. Replies
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    563

    If you have an automatic bleed control then make...

    If you have an automatic bleed control then make sure it functions properly, then adjust the length of the on time, and maybe shorten the time between bleeds. If you do not have one then install one.
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    563

    Do you have an automatic bleed control on the...

    Do you have an automatic bleed control on the tank.
  8. Thread: Canatel

    by airworx
    Replies
    2
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    853

    I have worked on a few in some buildings downtown...

    I have worked on a few in some buildings downtown fort worth. Other than that no.
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    877

    I would check the water temp sensors then I would...

    I would check the water temp sensors then I would check the control setpoint, check the water flow through your cooler, you should have a minimum of a 4# drop across barrell also check the temp...
  10. Thread: RTAA QUESTION

    by airworx
    Replies
    55
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    2,871

    16 degree drop across barrell means you don,t...

    16 degree drop across barrell means you don,t have enough water flow. This will cause low superheat. I would check your strainer, pump and any control valves you may have.
    Now make sure when you...
  11. Thread: RTAA QUESTION

    by airworx
    Replies
    55
    Views
    2,871

    low superheat would not indicate a low charge, if...

    low superheat would not indicate a low charge, if there is a solenoid valve or drier and it is sweating downstream this could be your problem. The only sure way to troubleshoot this problem is to...
  12. defrost should be initiated on time and...

    defrost should be initiated on time and temperture. There is a defrost time set point on defrost boards you may want him to move the time up. Generally defrost is initiated every 30,60 or 90 minutes...
  13. Replies
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    5,251

    yes voltages will fluctuate from o to 3.9 vdc....

    yes voltages will fluctuate from o to 3.9 vdc. exv's produce a tighter control and improves efficiency. But whatever.
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    5,251

    Correct. If voltages does not fluctuate or stays...

    Correct. If voltages does not fluctuate or stays at zero check processor.
    If voltage fluctuate then ohm check exv then open up exv and check to see if orfice is scared or will not slide easily.
  15. what is water temp in and out of cooler

    what is water temp in and out of cooler
  16. Replies
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    431

    stat senses coil temp and tells board to go into...

    stat senses coil temp and tells board to go into defrost, if enough time has passed between defrosts the board will go into defrost. by jumping the test pins you verified board operation so stat...
  17. Replies
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    1,182

    I would check the sensors for accuracy first....

    I would check the sensors for accuracy first. Then I would check water flow.
    No.1 thats to much of a drop, it shows theres not enough waterflow.
    Another thing is the superheat is vary low which is...
  18. Thread: Trane TWA090

    by airworx
    Replies
    6
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    1,756

    I would check the defrost temp sensor. I cannot...

    I would check the defrost temp sensor. I cannot remember if it is normally closed or open circuit so disconnect one lead from the sensor and energize defrost mode, or jumper the stat and energize...
  19. Replies
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    854

    order a new compressor. only differance between...

    order a new compressor. only differance between us and you would be the shipping cost. or you could call the compressor manufacturer and get some literature on repairing that paticular compressor,...
  20. Thread: Duct Sizes

    by airworx
    Replies
    5
    Views
    2,069

    DUCT

    a 7.5 ton unit will move around 3000 cfm depends on unit and return air.
    you will need somewhere around 3000 cfm of duct.
    now we will use flex and this is just a general idea.
    a 10" duct is rated...
  21. crisp

    unscrew it and open it up. then turn on remote/local switch, turn breaker for that compressor(s) so they don't start and see if the valve modulates up and down. on start up the valve will fully open...
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    384

    rc studio

    you can goto www.reliablecontrols.com they have a list of dealers. remember the newer kmd controls do not work with reliable. only the older stuff, so i would make sure
  23. crisp

    90% of the time you have an out of calibration thermistor, that is where i would start, ohm check the exv and test for correct voltage to exv then i would pump down the unit and open up exv, turn...
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    The logical thing to do is pray. This is always...

    The logical thing to do is pray. This is always the first thing to do.
  25. Replies
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    648

    is the motor driven by a freq. drive or is it a...

    is the motor driven by a freq. drive or is it a residential unit.
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