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  1. yea, true hardworker. but from my experince the...

    yea, true hardworker. but from my experince the txvs fail at an alarming rate and we all know about the poe oil and moisture, plus the new chiller will have some fancy controller that will give you...
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    thanks fellas, im well aware of what pid is, its...

    thanks fellas, im well aware of what pid is, its the tuning part, i'll keep playing with different adjustments until i getr
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    tuning a T775 controller ?

    so how are guys setting up the throttling range, intergal and derivative for different applications, example of 2 apps. are a cooling tower fan vfd and 100% oa ahu with chilled water/hw valve, i...
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    EVERYONE has good points. but lets back up alil...

    EVERYONE has good points. but lets back up alil and understand a basic refrigeration cycle. starting with the comp. discharge gas, which is hi temp hi press. vapor freon going in the condenser, out...
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    awesome awesome job. this profession at its best...

    awesome awesome job. this profession at its best and why we were deserve top dollar for our work.
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    2,537

    a vacation would probably help. but dude, there...

    a vacation would probably help. but dude, there is no service call that important or that should stress you out this much, unless its a hospital and a guy is having open heart surgery. every career...
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    i meant can you still start and stop the motor in...

    i meant can you still start and stop the motor in bypass with same s/s input in drive mode
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    557

    Abb ACH 550 ?

    do i land my start / stop on the e bypass board or the drive board, also, can i cycle the motor when in bypass.
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    599

    in case someone is looking for it, here ya go.

    in case someone is looking for it, here ya go.
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    599

    thanks brot

    thanks brot
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    599

    who knows this thermostat ?

    never seen this stat
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    845

    study the ohms law pyramid, it will explain it all

    study the ohms law pyramid, it will explain it all
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    845

    v x a = watts .... 3.41 btu per watt

    v x a = watts .... 3.41 btu per watt
  14. Replies
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    599

    no, thats the newer version/model. plis those...

    no, thats the newer version/model. plis those manuals really dont give a whole lot on the sequence of operation side of the unit.
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    889

    wierd, why has the picture rotated

    wierd, why has the picture rotated
  16. Replies
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    889

    cooling tower controls

    nothing too special. t775 controls 2 tower fan starters and a diverting valve on the tower loop. found out the valve is reverse acting so i gotta go back with a kele signal converter
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    599

    mcquay self contained

    im looking for the operation manual for this machine, and possibly some diagrams would be awesome. i looked on daikens site but it pulls up a newer verison of the unit with a different interface. ...
  18. actually, this usually gets it close for me...

    actually, this usually gets it close for me anyway. but seriously the same principles apply for all refrigeration equipment regardless of what it is. pressures and temperatures have to be recorded.
  19. really, this is like going to the dentist and...

    really, this is like going to the dentist and saying my mouth hurts and telling him which tooth. come on people!!!!
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    368

    drum roll please, she's a frankenstein

    drum roll please, she's a frankenstein
  21. Replies
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    368

    westinghouse compressor service

    lookin for the service manual for this compressor, its from 1969. and theres a part leaking underneath the suction inlet, obosite of the king valve. its not the oil heater but kinda looks like a well.
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    hey rundawg can piggue back on this one too,...

    hey rundawg can piggue back on this one too, thanks bro.
  23. Replies
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    1,526

    kinda hard to micro manage in commerical. shoot,...

    kinda hard to micro manage in commerical. shoot, i'm usuallly dispatching myself.
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    6,911

    guys come on here all the time and never give...

    guys come on here all the time and never give updates. kind of annoying.
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    6,911

    there plans to replace the whole riser soon...

    there plans to replace the whole riser soon needless to say.
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    565931 the nipple in the old 90 was litterally...

    565931

    the nipple in the old 90 was litterally paper thin and when we went to pull it off the riser it crumbled in my channel locks.
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    6,911

    i've only skimmed through this thread but this...

    i've only skimmed through this thread but this sounds wierd. and if is true, how could it be his fault. it could have happened to anyone. shoot, i just flooded 2 apartments. i was replacing a blower...
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    im 36 and i've always had the net. i wonder what...

    im 36 and i've always had the net. i wonder what the older guys did back in the day? i'd probably be useless. i think we get lazy too, when you know your only a few clicks away to finding answers to...
  29. i tried to find your email, mine is cah...

    i tried to find your email, mine is cah _507@yahoo.com. i'd be interested in talking, but with alittle more privacy.
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    what hvac69 said, how far is the remote condenser...

    what hvac69 said, how far is the remote condenser ?
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    plain and simple, in commercial your a mechanic,...

    plain and simple, in commercial your a mechanic, in the residential world you have no value. most employers think they can replace you with someone that makes half what you do and homeowners have no...
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    can that thing even make it up a hill lol, at...

    can that thing even make it up a hill lol, at least you never have to crawl in it and everything is an arm reach away
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    just make sure they have good tech support

    just make sure they have good tech support
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    what type of burners ? are they sitting correctly...

    what type of burners ? are they sitting correctly ?
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    whoever did this needs to go to jail, cause he...

    whoever did this needs to go to jail, cause he stole money from that owner
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    i want to see pics too. this should be a good...

    i want to see pics too. this should be a good thread because i need help in this department. living in townhome sucks. its so bad, we have to rent a storage unit. i can be a bit of hoarder too right...
  37. i think you should just chill and continue to...

    i think you should just chill and continue to learn, you sound like a 10 year vet., commerical has pros and cons too, sounds like your company just has a sh**** cust. base, you'd be a helper in...
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    47,847

    well why the hell not, slowed down so i cleaned...

    well why the hell not, slowed down so i cleaned up a lil
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    Spot on

    Spot on
  40. Replies
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    york, of course theres more to controls thean...

    york, of course theres more to controls thean just a ladder. i just stated that because all my buddy does for trane is vav commissioning and troubleshooting. so he's in a ceiling all day everyday. or...
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    i'd go with service. last week i finished...

    i'd go with service. last week i finished installing a mini split, tuned and calibrated a 2 mill. btu aerco condensing boiler, using a combustion analizer and adjusting the drive parameters to match...
  42. using only 1 txv will cause excessive hunting,...

    using only 1 txv will cause excessive hunting, and eventually will kill your compressors, ive seen this time and time again. by the time i get involved i see empty oil containers, gaskets, unloaders,...
  43. id 1st start off by adding glycol to your chw...

    id 1st start off by adding glycol to your chw system. is belimo 2 on the supply trunk ? 2nd the data centers, electrical rooms ive seen have an exhaust system with a oa mixing box and dampers to shut...
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    i think i found it . waterfurnace

    i think i found it . waterfurnace
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    593

    dang , i googled it. came up with nothing.

    dang , i googled it. came up with nothing.
  46. Replies
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    who makes this ?

    i need a txv for this wshp. its a bi directional valve. id prefer an oem valve if possible.

    m# VLH036B301CRS2NSA
    s# 081002000
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    too funny

    i can fix anything with a 6n1 and duct tape,
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    100% efficiency

    100% efficiency
  49. Replies
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    motorized fire/smoke dampers ive seen are...

    motorized fire/smoke dampers ive seen are controlled by the fire alarm co. the lead linkages have a temp. rating, not sure who or how the temperature is selected, maybe its a code thing for a min....
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    man i hate calls like this

    man i hate calls like this
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