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Type: Posts; User: dave1234

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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...
  10. 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...
  11. 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
  12. 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...
  18. 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...
  24. 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
  25. 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.
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