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  1. Replies
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    Are there any analog ones? Which one would you...

    Are there any analog ones? Which one would you recommend?
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    Hydronic manometer

    What make/model do you guys use to calculate psi diff/gpm in chilled water/hydronic systems?
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    Chiller retrofit

    Looking to retrofit a R-22 chiller, what would be the recommended replacement?
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    455

    No issues so far just started the units up and...

    No issues so far just started the units up and pulled the box down. Rechecking today. It's extremely noisy can't even talk on the phone near it.
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    Sporlan ser-d valves

    Has anyone experienced liquid line noise with these valves? Almost sounds like water running through the liquid line....

    Alittle background info.
    404a med temp
    Two evaps per condenser each...
  6. The unit appears to have ground going back to the...

    The unit appears to have ground going back to the panel. The uv sensor and amplifier are new (6-8months old) plus a new heat exchanger. It's a very intermittent issue I suspected a ground problem but...
  7. 7800 burner control intermittent lockout

    Has anyone seen an intermittent lockout code 15? Thoughts on what could cause this intermittent issue?
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    426

    No, cpc e-2 controllers, i want to be able to...

    No, cpc e-2 controllers, i want to be able to connect with my laptop. Any thoughts?
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    e2b software

    Where can you download or purchase the software to connect to e2 controllers?
  10. Replies
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    1,134

    Yeah basically trying to find a psi washer to...

    Yeah basically trying to find a psi washer to clean larger ac units and refrigeration coils. How big of a psi washer would be needed?
  11. Replies
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    Pressure washers

    What's a good psi washer to clean condenser coils? Ac and refrigeration coils?
  12. Replies
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    Combustion analyzers

    Whats the best combustion analyzer for commercial applications?
  13. Replies
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    1,597

    and keeping the condenser cleaned all the time.

    and keeping the condenser cleaned all the time.
  14. Replies
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    1,597

    drier frosting over sounds like moisture.

    drier frosting over sounds like moisture.
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    1,269

    does it have a txv? plugged screen possibly?

    does it have a txv? plugged screen possibly?
  16. i dont like them either. Tech support wants them...

    i dont like them either. Tech support wants them purposedly undercharged. and for the sh for eexv to be adjusted summer vs. winter. The whole setup is odd.
  17. masterbilt reverse cycle defrost system

    Anyone work on this type of system before? thoughts?
  18. Thread: fluke 922

    by spyder00087
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    431

    fluke 922

    Does anyone have this meter? thoughts?
  19. Replies
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    w/i freezer

    Ive got a i/c w/i freezer that always ices up the compressor but the sh is 10 at the evap. thoughts?
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    to check the bearings you need to loosedn the...

    to check the bearings you need to loosedn the motor on its track to allow some slack in the belts. Rolling the belts off will strain the bearings or break something. once the belts are off try to...
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    aggravating service call

    just took a service call for no heat, took awhile to get to the location only to find out the new rtu was never started up. the gas valve was off and the heat exchanger wasnt burned off. all of this...
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    Sounds low on refrigerant to me.

    Sounds low on refrigerant to me.
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    thanks for your insight

    thanks for your insight
  24. Replies
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    its ok. i know. anyways. thanks. I did apply for...

    its ok. i know. anyways. thanks. I did apply for pro membership as well. What is the correct wall to pipe in a multiple evap system with compressor /unloading with the evaporators and compressor...
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    no i am not a diyer. Im a service tech.

    no i am not a diyer. Im a service tech.
  26. Replies
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    more on how to pipe and layouts

    more on how to pipe and layouts
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    2,313

    Refrigeration piping

    Does anybody know of any good refrigeration piping books?
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    Is there a good ground to the unit?

    Is there a good ground to the unit?
  29. Replies
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    idont have m&s at this time. but its electric...

    idont have m&s at this time. but its electric defrost 2 independent systems. currently 45 min defrosts and defrost term at 50. Each system defrosts right after each other. Should those defrosts be...
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    w/i freezer defrosts

    What should a typical defrost schedule be for a two system freezer? and what would be a good defrost term temp?
  31. Replies
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    College and trade schools are helpful. They do...

    College and trade schools are helpful. They do more than just tell you what a comp. looks like.
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    Tracker alarm

    Has anybody heard of a low resources alarm? Error code 100?
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    cant remember exactly the type

    cant remember exactly the type
  34. Replies
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    sporlan. no, it was the second brand new valve....

    sporlan. no, it was the second brand new valve. both valves had the same problem. the valve was sized correctly. with no power to it it should close. but sometimes would stay open.
  35. Thread: txv icing

    by spyder00087
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    was this a dumb question?

    was this a dumb question?
  36. Replies
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    solenoid valve problems

    found solenoid valve sticking open intermittently on a recent call. no power to coil either. any possible reasons?
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    liquid line solenoid valve

    recently on a call found a solenoid valve sticking open intermittently even with no power to it. any possible reasons?
  38. Thread: txv icing

    by spyder00087
    Replies
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    1,602

    txv icing

    is it normal for ice buildup on txvs and distrib. tubes in a freezer application?
  39. Replies
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    ori/ord??

    ori/ord??
  40. Replies
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    its in direct contact in the liquid line. yea not...

    its in direct contact in the liquid line. yea not much info on it, i cant seem to find much info. The condensing unit doesnt have much in the way of head psi control other than a thermostat cycling...
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    sorry no pics

    sorry no pics
  42. Replies
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    Yes i think so. Its the first time i ever seen...

    Yes i think so. Its the first time i ever seen one before.
  43. Replies
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    well its a pump in line. on the liquid line after...

    well its a pump in line. on the liquid line after the reciever. Basically similar to a b&g series 100. I believe its powered all the time when the compressor is on.
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    Yea stupid question right? I saw it on a older...

    Yea stupid question right? I saw it on a older bohn condensing unit. W/i Freezer application. R-22.
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    Liquid amplifier

    What is the purpose of it?
  46. Replies
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    no it kinda looks like a honeycomb. But is made...

    no it kinda looks like a honeycomb. But is made out of aluminum, no copper. The one i saw was on a heatcraft and failed in two days of startup. A crack was on the ubend on the inlet.
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    Hyper core: microchannel

    Has anybody encountered this coil yet? Thoughts?
  48. Replies
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    No problems. Just wondering. I was told that 414b...

    No problems. Just wondering. I was told that 414b was a better choice if the cap tube was starting to restrict. Is that true?
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    414b vs. 134a in cap tube systems

    which one is better?
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