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  1. Great responses guys thanks! What peaked my...

    Great responses guys thanks! What peaked my curiosity about the gasket is that the only parts exploded diagram i can find is from and Aussie outfit called renwhit and some of the parts diagrams have...
  2. Where is refrigerant pressure relief on 6D

    Title says is all just wondering where the relief valve (NOT oil relief) is on 6d copeland. 6r parts explosion seems to point to behind the discharge service valve but also notes a pressure relief...
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    Actually i was just logging in to edit post and...

    Actually i was just logging in to edit post and ask that very question how does one verify the relief valve is not seated as thats actually what im leaning towards as the pressure didnt doesnt rise...
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    Odd cope 6D loading behavior

    Have a cope 35HP 6D remaan'd by Mcquay. During the off cycle short cycles incessivley. Front seated suction service valve and verified a head is blowing by- The strange thing is when i run the...
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    Yes I easily could've missed a seperate device...

    Yes I easily could've missed a seperate device that is a 24v signal amp. Lots of controllers on the wall. Is far as mislabeling that doesn't happen does it?
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    It does not power any of them like I said it is a...

    It does not power any of them like I said it is a regular transformer that says signal amplifier never seen that
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    24vac signal amp

    Ahu room had a plan 40va 24v xfrnr marked signal amplifier . Just wondering as to what's its purpose is although I imagine it gas to do with almost 30 actuators sharing a signal just looking for any...
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    That is true. So if where in 100% hgbp and our...

    That is true. So if where in 100% hgbp and our recips are suction gas cooled we can only hope it doesn't run overheated?funny I went from flooding to overheating compressors. Ice makes a convincing...
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    Yes I'm sure there's no intention to alter the...

    Yes I'm sure there's no intention to alter the piping and it'll still be distrod directly after the TXV. The idea is more precise dat control only. The DHRE works just fine and serves its purpose-...
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    I see this in precision cooling apps- CRACS. And...

    I see this in precision cooling apps- CRACS. And in my mind they're scrolls. Comfort cooling hardly demands such precise DAT. I realize the TXV will throttle back but if we're running hot gas were...
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    But I like the old one... Ha

    But I like the old one... Ha
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    Systems already have hot gas and have been in...

    Systems already have hot gas and have been in service for almost 20 years. Some consultant recommends this fancy new hgbp for more precise dat control during DX season. My fear is too much hot gas...
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    A hot gas valve that will modulate based on DAT...

    A hot gas valve that will modulate based on DAT for more precise dat control won't to much hit gas flood evap
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    Yes two circuits 40 ton each one with hot gas

    Yes two circuits 40 ton each one with hot gas
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    Hot gas bypass and slugging

    As part of renovations a "mechanical enginerring consultant" recommends putting some sort of digital hot gas bypass to let the compressors run at next to nothing capacity. It is always fashionable to...
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    I totally agree that to open again for minor...

    I totally agree that to open again for minor repair and replace new dryer is pointless and waste of time. As far as the HH driers and 404 I was referring to retrofit scenerios and the fact that the...
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    That's another cause for discussion sporlan...

    That's another cause for discussion sporlan literature speaks of HH driers basically for removal of parafin wax as in lowtemp 404 retrofits but I hear guys talk about using them after a burnout...
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    If out of shear bored em I can see baking it. I...

    If out of shear bored em I can see baking it. I think I small purge while I rebuild a solenoid will keep it plenty dry- something that should be done anyways
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    Because I've read on this very site dudes- and...

    Because I've read on this very site dudes- and here's one I don't understand- baking an old dryer in the oven to save the $25 cost of a new dryer. That's one I don't get- I'm suggesting a more...
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    "Drying" a drier

    Long story short after replacing a drier the other day I realized I need to open the system for repair again briefly. Was thinking of placing a heat lamp above the dryer while it evacuates again to...
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    I could be dead wrong here but it's a data center...

    I could be dead wrong here but it's a data center and I believe it may be on ups already
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    York chiller YLAA101 takes down BACNET

    Have a York YLAA101HE46X chiller. Everytime the facility does a load transfer gen test all devices go offline. Isolated problem to the chiller which uses BACNET gateway. Have to cycle control power...
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    My main point was regarding hairline cracks in...

    My main point was regarding hairline cracks in commercial equipment absolutley an atmospheric vented fan temp or time on would expose a co risk- on say a a continuos fan Rtu with induced draft if the...
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    [QUOTE=VTP99;17620201] 10-15lbs at least

    10-15lbs at least
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    The line "worked well" was in reference to the...

    The line "worked well" was in reference to the retrofit procedure. I knew it was wrong hence spending my "off" time - as if there really was such a thing- dwelling on stuff. I was more less intrigued...
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    I regress I have heard of dual pressure...

    I regress I have heard of dual pressure headmasters- if I remember right U break off one of the bulb stubs
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    So wouldn't just charging to clear site glass...

    So wouldn't just charging to clear site glass with cond coil wide open have an overcharge condition in the warmer weather
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    I've never heard of such a thing

    I've never heard of such a thing
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    Wrong headmaster / overcharge?

    Retrofitted a system from 502 to 404. Worked well- noticed headmaster after the fact hidden behind receiver of course- to be an r12 flavor- yeah that not gonna work. Thinking of just returning with a...
  30. So simply put we can gage refrigerant capacity by...

    So simply put we can gage refrigerant capacity by the differance between when the low temp low pressure liquid and the boiling point - as once the gas is superheated its ability to absorb any more...
  31. I understand the glide but I've heard 134 been...

    I understand the glide but I've heard 134 been called low capacity and it is not a blend
  32. What is meant by a refrigerant has low capacity

    Maybe a dumb question but the title says it all.. What is meant by a refrigerant has less capacity i.e 12 vs 134vs mp39 just throwing them out there for the sake of example- I realize different gases...
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    Perfect! That's what I'm driving at!

    Perfect! That's what I'm driving at!
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    Sizing actuators/ tourque requirements

    Hello does any body know the "rule of thumb" for sizing damper actuators- like x in lbs per sq ft. The salesmens have acces to tools on I portals and what not for specific products but I'm looking...
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    2 stage gas valves slow or fast

    How does a layman such as myself (at a glance)tell the differance of a 2 stage gas valve is slow or fast opening hi fire I've noticed some ate almost immediately while some slowly open to hi fire I...
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    My thoughts exactly- I'm in northern MN. Slated...

    My thoughts exactly- I'm in northern MN. Slated for a high temp, that's right HIGH TEMP of -20*f Monday
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    Cracked heat exchanger question

    Hello quick question hopefully someone can explain to me. If a heat exchanger is hairlines cracked how does flue gas /co make its way to the supply air. The static of the blower is far greater then...
  38. Thought of intentionally running in a vac with...

    Thought of intentionally running in a vac with POE is scary. Don't know if place is 24 hrs or not but with no load over night outdoor temps can easily reach -20 up here- so -20= bout 2" hg vac at...
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    That's what I was thinking but that's why I put...

    That's what I was thinking but that's why I put the teen in to try and "bleed" it and ensure proper oil circuit prime with no luck How do we remedy oil pump vapor lock?
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    These are great responses- I had no idea oil pump...

    These are great responses- I had no idea oil pump was directional and any heads up on what to expect upon taking end off. Anyone know where to find a good parts exploded diagram or IOM manual? It...
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    Interesting- me no. But that is an interesting...

    Interesting- me no. But that is an interesting point. I'd assume not since there is another right next to it that operates just fine and are feed from rhe same power supply. The oil pump I took out...
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    Yeah was about 2 am mid week. I don't think...

    Yeah was about 2 am mid week. I don't think taking the end bell off is a huge deal because common sense dictates that since the oil pump is centered there's no bearing there that'll have to be...
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    D/B big 4 no oil pressure pump ok

    Customer wanted service valves replaced on water cooled open drive D/B big 4 replaced valves no problem- after evacuating and partial charging compressor oil switch times out and opens- checked out...
  44. To my simple mind if we measure a in adequate...

    To my simple mind if we measure a in adequate voltage to neutral and th same to ground we can conclude the problems lies in the hot
  45. Nobody's "throwing parts" at anything. In fact I...

    Nobody's "throwing parts" at anything. In fact I simplified things, and offered an economical, safe solution.
  46. Thermostat is connected to a nc pump down....

    Thermostat is connected to a nc pump down. solenoid. That's it. Remote Unit is electrically isolated. Just used lpc as operator and is working great- was the simplest solution at the time. I have...
  47. "Dirty voltage" I guess was not the term I was...

    "Dirty voltage" I guess was not the term I was looking for. Obviously there is some weirdness in the wiring that straightens out when I hooked it up not piped in hence why it works then. Seems to be...
  48. Is installed right direction- coil is single...

    Is installed right direction- coil is single voltage- measure 120 without load hooked up- there is nothing in the literature that says it has to be vertical or horizontal in fact the diagram showed...
  49. There is no other load- is top rail and low temp...

    There is no other load- is top rail and low temp chest- no fans. comp/unit is electrically isolated- like I said I just set it up to run the lpc as operator for now being as its the only box on the...
  50. Yes changed whole valve body and checked...

    Yes changed whole valve body and checked everything inside the machine - definitely some funk between panel and box
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