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  1. evaporator motor sizes?

    evaporator motor sizes?
  2. 100 ton screw compressor going off on evap limit

    I am having issues with a 100 ton screw compressor going off on evap limit after about 30 seconds of run time. I have taken an amprage reading of the compressor to make sure that it was loading...
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    Exactly 4 valve are most common...i think 2 would...

    Exactly 4 valve are most common...i think 2 would be weird to use
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    with a 2 valve you cant leave both your high side...

    with a 2 valve you cant leave both your high side and low side up when charging.
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    1,065

    I'd got with Extech for amount of use and price.

    I'd got with Extech for amount of use and price.
  6. I agree, if you dont know how to setup proper...

    I agree, if you dont know how to setup proper control on the vfd by verifying these basic mechanical and control things call someone in
  7. whats the return air on the unit? check the...

    whats the return air on the unit? check the dampes in the mixing chamber. Are the return dampers open? If so they might be linked to the same signal? 2-10VDC Usuall fail safe or closed would be 2 vdc...
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    is there filter screens on it?

    is there filter screens on it?
  9. yeah power exhuast are common in package units

    yeah power exhuast are common in package units
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    looks good thats what the shims are for

    looks good thats what the shims are for
  11. If thers no econo theres no need for relief...

    If thers no econo theres no need for relief because your not pressuring the building
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    It all depends on what your building control...

    It all depends on what your building control system is and if theyre protocol will talk to the RS485
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    1,164

    never use a room thermostat to measure a dat...

    never use a room thermostat to measure a dat always use a probe to measure air temp. You might have a faulty dat sensor check the resistance campared to the actual temp
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    I agree, if not clean the sucker

    I agree, if not clean the sucker
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    if you set your address to 1 on the card you can...

    if you set your address to 1 on the card you can search for the address of 1 on the device table you should get this
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    damn free climbing thats crazy

    damn free climbing thats crazy
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    1,176

    sounds like a diy

    sounds like a diy
  18. Thread: RTAA340

    by bigwheelingman
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    1,667

    yes, thats correct verify by tapping first this...

    yes, thats correct verify by tapping first this will be the first tell tell
  19. Thread: RTAA340

    by bigwheelingman
    Replies
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    1,667

    what are the refer cicuit doing?

    what are the refer cicuit doing?
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    No you dont have to pull a vaccum on your gauges...

    No you dont have to pull a vaccum on your gauges if thats what your instructor tought hes wrong. You just have to purge the hoses of air. I would have a set for 410A set for 22 and 407c. Depends what...
  21. Alerton is pretty good it all depends on the type...

    Alerton is pretty good it all depends on the type of control you want. I deal with a lot of siemens stuff it all depends how you set it up. There is never redundant comm. You might have backup...
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    I finally came up with the files ill post them...

    I finally came up with the files ill post them today.
  23. Pull the battery and kill the panel wait till its...

    Pull the battery and kill the panel wait till its dead and start it up.
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    lol true and nice rig

    lol true and nice rig
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    4,365

    Ill send these your way give me a day

    Ill send these your way give me a day
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    901

    never use these to measure pipe temp they are...

    never use these to measure pipe temp they are very inaccurate.
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    Locally with a controller with the siemens app on...

    Locally with a controller with the siemens app on it. when you pull the 99 points just go in and chnage it.
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    sounds shady..not right

    sounds shady..not right
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    I believe their main office is in Redmond,WA What...

    I believe their main office is in Redmond,WA What are you looking for?
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    i agree

    i agree
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    closed loop is better.There is no chemical feed...

    closed loop is better.There is no chemical feed required like a open loop
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    Yeah it does, we need more info though might be a...

    Yeah it does, we need more info though might be a number of things.
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    dont worry about the high velocity on the...

    dont worry about the high velocity on the standard pleated one from the store will be fin in the return
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    hopefully he knows what your talking about :)

    hopefully he knows what your talking about :)
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    Sounds like your cutting out on a safety?

    Sounds like your cutting out on a safety?
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    ohh alright...just make sure the fan blades arent...

    ohh alright...just make sure the fan blades arent out of the shroud too far."Only half way at most" and check those caps to your motors might be undersized.
  37. Thread: BActalk

    by bigwheelingman
    Replies
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    1,186

    Ohh the good ole VLC card yeah, you can plug into...

    Ohh the good ole VLC card yeah, you can plug into these as long as you have the microtouch controller. This should allow you to make the changes your looking for!
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    and just as pddrake said check the caps make sure...

    and just as pddrake said check the caps make sure they are still within microfarad specs
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    are they spinning backwards prior to the...

    are they spinning backwards prior to the contactor closing?
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    that would make some really tasty burgers lol

    that would make some really tasty burgers lol
  41. good point fab...never ran into this issue before...

    good point fab...never ran into this issue before but, i only use this on fan coil units in lab spaces...so its not as much of an issue due to the constant condensate.
  42. try cooking oil, it wont dry out like water :)

    try cooking oil, it wont dry out like water :)
  43. whats the head cutout set at? 400 is pretty high

    whats the head cutout set at? 400 is pretty high
  44. sounds like there is still non condensables

    sounds like there is still non condensables
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