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  1. Replies
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    Heat pumps have come a long way. The Fujitsu...

    Heat pumps have come a long way. The Fujitsu RLS2H system is capable of putting out 75% of it's rated BTU output when the outside air temp is -15 degrees.
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    1,459

    Swap the two copper lines on the compressor,...

    Swap the two copper lines on the compressor, rebraze and go get lunch.
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    763

    The 3 in 1's are are ok as long as there is time...

    The 3 in 1's are are ok as long as there is time between the next call for cooling to allow it to cool. In A short cycling compressor situation the 3 in 1's are not so good
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    I was working on a similar set up one time, I...

    I was working on a similar set up one time, I jumped out the hp switch and kept adding a little refrigerant, then boom I heard the restriction let go in the cap tube. I vented (adjusted) some to get...
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    2,138

    Vapor, it's about the vapor! And a change in...

    Vapor, it's about the vapor! And a change in state!


    What do you mean, you can't compress liquid!
  6. 30, 40 min defrosts per day, now that's funny! ...

    30, 40 min defrosts per day, now that's funny!


    Sent from my iPhone using Tapatalk
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    1,180

    Why? Sent from my iPhone using Tapatalk

    Why?


    Sent from my iPhone using Tapatalk
  8. Replies
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    1,180

    How about two 5 ton Fujitsu cassette systems ...

    How about two 5 ton Fujitsu cassette systems


    Sent from my iPhone using Tapatalk
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    1,990

    It does seem logical, and no doubt it works....

    It does seem logical, and no doubt it works.
    Thanks for the reply.
    Flange
  10. Replies
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    1,990

    Walkin cooler temp control placement?

    I just replaced a ranco cooling control with a johnson A419 digital control, for a walkin cooler. Evap fans in the back of the cooler. I placed the thermo sensing bulb for the control at 1/2 way...
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    3,137

    Yea check the zone sensor, make sure fan is in...

    Yea check the zone sensor, make sure fan is in auto, and program allows fan to do what you want it to do, ie cycle or continuous run.
  12. So what's the verdict on the Bullet?

    So what's the verdict on the Bullet?
  13. Replies
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    1,111

    If I am charging up small reach in cooler,...

    If I am charging up small reach in cooler, ambient temp= 70f, add 30= 100f convert to 124 psi which is proposed high side press. for 134a. This is a cap tube sys. What should temp be at condensor...
  14. ok makes sense, is this what tech's mean when...

    ok makes sense, is this what tech's mean when talking about glide?
  15. Being a pure refrigerants, R134a, R12 and R22 can...

    Being a pure refrigerants, R134a, R12 and R22 can be charged either way. The blends like R401A, R409A, R410A and all in the 400 series of refrigerants must be charges as a liquid.

    The Azeotropes...
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    1,269

    Thanks for the info R-12. When you say bleed high...

    Thanks for the info R-12. When you say bleed high into low, you mean open high and low valves on the manifold let pressures equalize?
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    Thanks a lot 404, You be very wise man, I must...

    Thanks a lot 404, You be very wise man, I must say.
  18. Replies
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    1,269

    Not a prob bud, We are only human, my exwife...

    Not a prob bud, We are only human, my exwife doesn't think so, but she's a nontypical a$$hole anyway.
  19. Replies
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    Reliableac, 85 + 30 = 115, converted to 134a temp...

    Reliableac, 85 + 30 = 115, converted to 134a temp press scale is about 157 159 discharge press, I believe you are a little off.
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    1,269

    R404a, this unit has a constant cut in coil...

    R404a, this unit has a constant cut in coil sensing t stat, what is the bast way to tell if this type tstat is bad?
  21. Replies
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    1,269

    ok here goes, I'm a bit green with charging small...

    ok here goes, I'm a bit green with charging small equipment.
    I have a sandwich prep table at subway.

    Cap tube
    R-134a
    Kitchen ambient 85 degrees

    Found evap froze, block of ice, evap fan...
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    859

    I did not check the ohm value I was just trying...

    I did not check the ohm value I was just trying to get my meter to sound off telling me I had continuity.
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    859

    I'm just trying to ring out the coil to check if...

    I'm just trying to ring out the coil to check if it is good or bad.
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    859

    On a Potential relay, say a mars 66, It seems to...

    On a Potential relay, say a mars 66, It seems to me that I should have continuity between terminals 2 and 5, Why is it that I don't have this when I am checking to see if the relay is good. Ther is...
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    Thanks alot man. I've been to copeland's site, I...

    Thanks alot man. I've been to copeland's site, I think it could have been designed better, tough to navigate.
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