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    I never cease to be amazed

    I was at the local mall shopping. A team of hvac guys were installing a heat pump split system in one of the small stores. A 5 ton trane air handler mounted horizontally above the drop ceiling. One...
  2. Superheat - like a really powerful furnace? ...

    Superheat - like a really powerful furnace?
    Subcool - air conditioner turned down too low?
    TD- today?

    Use in a sentence - "Today when I got home my girlfriend cranked up the superheat causing...
  3. "*Did a quick charge on unit beer can cold and...

    "*Did a quick charge on unit beer can cold and left.*".....bahaaaaaaaa that's my line!!!!
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    Always remember, when a compressor fails, look...

    Always remember, when a compressor fails, look for the reason then change it.
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    Sounds like the gauge needs cleaned...mine has...

    Sounds like the gauge needs cleaned...mine has done that before
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    Some of the questions your asking makes me...

    Some of the questions your asking makes me wonder if your a real tech. Any tech should always change any drier when a system is opened.

    When you replaced the compressor, did you clean the...
  7. Thread: 407c

    by captaincompressor
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    I know it's not supposed to last but it has.

    I know it's not supposed to last but it has.
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    Will they get the suction line 30 below ambient /...

    Will they get the suction line 30 below ambient / ssh/ 5 x 80 to get beer can cold?
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    I like the xjal units with the electronic unit...

    I like the xjal units with the electronic unit controllers. very nice systems.
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    hot gas defrost is without doubt the best way to...

    hot gas defrost is without doubt the best way to defrost. a 1 ton valve should work fine with a check valve to bypass the cap tube. you could go one step ahead and install a txv on the evap. Your...
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    try push starting it. Get it rolling and pop the...

    try push starting it. Get it rolling and pop the clutch in second gear. Be sure the key is on.
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    In older units, I have many times changed types...

    In older units, I have many times changed types and styles of compressors across brands with zero problems. From an engineering perspective you have changed the operating characteristics of the...
  13. I am going to tee both my 10 cfm pumps together...

    I am going to tee both my 10 cfm pumps together with half inch flares and soft copper. I won't even need a micron gauge then. when I see the copper line sets start to colapse, I know it's in a deep...
  14. I have a whole bag full of keys and alarm codes...

    I have a whole bag full of keys and alarm codes to my customer's homes. They call and tell me to go in with my key and take care of any issues. I leave them a bill and have a check in my box in 3...
  15. We don't have uniforms, we do have nice trucks...

    We don't have uniforms, we do have nice trucks that are kept clean. We wear shoe covers etc. We are honest. Even if we don't make much for something simple we are honest. That's why I have the same...
  16. I know some pot head hvac techs lol

    I know some pot head hvac techs lol
  17. Half of the restaurant employees don't even close...

    Half of the restaurant employees don't even close the walkin doors all the way. I have been to many where the door was propped open and coil froze solid.
  18. Most restaurants are so nasty that would be the...

    Most restaurants are so nasty that would be the least of anyone's worries.
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    Penetrations. ....autocorrect

    Penetrations. ....autocorrect
  20. I used the same evac methods pulling a triple...

    I used the same evac methods pulling a triple evac below 200 microns breaking with nitrogen. Can't go wrong there. Installed a big fat filter drier.
  21. We have never used a gfci for heat tapes.

    We have never used a gfci for heat tapes.
  22. I have drilled couplings. Flow some nitro while...

    I have drilled couplings. Flow some nitro while brazing. Will be fine.
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    Is moisture getting in somewhere? Unsealed pent...

    Is moisture getting in somewhere? Unsealed pent rations from the basement or crawlspaces? Window and door gaskets? Could be infiltration into the building envelope.
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    Slow the fan down.

    Slow the fan down.
  25. I bought a new Danfoss scroll single phase 2.5...

    I bought a new Danfoss scroll single phase 2.5 ton compressor that has "PVE oil" stamped on it. R410A. Works fine. Won't sucks up moisture and turn to acid like POE.
  26. Same here...if you can get by without a...

    Same here...if you can get by without a trap....less chance of a clog.
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    AC renew, renews the beer can cold feeling. Hehe

    AC renew, renews the beer can cold feeling. Hehe
  28. I put a 3 ton Samsung rotary (non inverter) in a...

    I put a 3 ton Samsung rotary (non inverter) in a 5 ton heat pump condenser that I matched up to a 3.5 ton R22 system at one of my cousin's homes. Works great. Txv on 8 degrees SH , 10 degrees...
  29. I am not for sure how Fujitsu controls the indoor...

    I am not for sure how Fujitsu controls the indoor fan in heat mode during low ambient conditions. They may be disabling the speed controls so you cannot crank up the fan and cause a low temp rise on...
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    Lmao.....it will quit for sure

    Lmao.....it will quit for sure
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    Is the suction line beer can cold? Liquid line...

    Is the suction line beer can cold? Liquid line warm?
  32. lol...the Txv was set for 10 degrees SH , subcool...

    lol...the Txv was set for 10 degrees SH , subcool was 10. the suction line got beer can cold haha
  33. I pumped it up beer can cold. lol jk. I door wet...

    I pumped it up beer can cold. lol jk. I door wet bulb/ outdoor dry bulb called for 28 degrees SH. The suction line was not sweating. lol.
  34. Built my neighbor a heat pump out of my scrap units

    Built my neighbor a heat pump out of an old carrier 10 seer 3.5 ton HP. The condenser was removed from a customer home when we did an upgrade. Unit works great.
    I didn't realize the outdoor piston...
  35. Does that take 15 Minutes through a charging...

    Does that take 15 Minutes through a charging manifold with valve cores in place? Hehe
  36. I could only imagine a recovery machine is a...

    I could only imagine a recovery machine is a crappy vacuum pump. I bet it takes all day. Hard to believe it will do 500 microns.

    Just get a good 2 stage rotary vane pump.
    Don't use manifold...
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    Who needs a drier if you vacuum it for 15...

    Who needs a drier if you vacuum it for 15 Minutes? That oughtta getter dry.
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    Take the superheat on the suction line. I like to...

    Take the superheat on the suction line. I like to run mine about 20 degrees with the box at temperature.
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    True

    True
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    I meant the system....not cleaning moisture out...

    I meant the system....not cleaning moisture out of the drier.
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    Or a good 200 micron evac

    Or a good 200 micron evac
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    So the driers with weep holes absorb moisture...

    So the driers with weep holes absorb moisture sitting on the shelf? That sucks.
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    If necesary, rig up a 90380 relay if the controls...

    If necesary, rig up a 90380 relay if the controls can't handle an extra amp or two. I mainly carry only 1075 rpm motors from 1/4 to 3/4 hp. Never had an issue. A higher rpm condenser motor will...
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    Put the faster motor in, check the superheat if...

    Put the faster motor in, check the superheat if it is a piston metering device. Adjust the charge to indoor wet bulb and outdoor dry bulb. Don't look back...won't hurt anything.
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    The only time I ever used that stuff was on a...

    The only time I ever used that stuff was on a refrigeration system where I had a Hussman Aluminum coil leaking. Never could really ever pinpoint the leak. Store was busy and couldn't disassemble...
  46. Before I had dual fuel GMH95 gas furnaces added...

    Before I had dual fuel GMH95 gas furnaces added to my heat pumps, I ran the ARUF's....about the same thing. Just a 3 speed fan coil Goodman. They are decent units. I have awuf units in my rentals....
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    A scroll is a scroll is a scroll. On the or...

    A scroll is a scroll is a scroll. On the or recips, I have more than once found the rotolocks leaking....they may as well just put a plumber's union on them...junk.
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    Is the suction line beer can cold?

    Is the suction line beer can cold?
  49. I Would Say They Are About The cheapest. Not bad...

    I Would Say They Are About The cheapest. Not bad units.
  50. The business is full of stupid lol

    The business is full of stupid lol
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