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Type: Posts; User: clgman

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  1. Replies
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    Gents: I've never been fortunate enough to make a...

    Gents: I've never been fortunate enough to make a such a repair without adjusting shims a couple of times. I applaud your success without doing so. Thanks !
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    Gents: How was it possible to adjust the...

    Gents: How was it possible to adjust the clearences without removing the Gearducer from the Tower chassis ?
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    Old Recold Air Handlers

    Anyone out there have info or a direction to find specs on Recold AH 81 Air Units, thanks
  4. Thread: MP 581 wows

    by clgman
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    MP 581 wows continued

    Thanks for the replys, will be back on site to continue, more to come !!!!
  5. Thread: MP 581 wows

    by clgman
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    MP 581 wows

    A normal screen with AHUs in operation, the alarm indicator becomes active, sometimes the screen will indicate communication failure, and sometimes the screen displays all alpha-numeric characters...
  6. Thread: MP 581 wows

    by clgman
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    MP 581 wows

    Two existing MP 581 crashing on comm failures, both were replaced with new displays, same problem, any ideas ??
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    Carlyle wows !!!

    That's normal for some Carrier equipment. Is circuit two totally isolated from circuit one, or is it a combined or common system ? Where are the high and low pressure controls tied into refrigerant...
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    Shaking Carlyle

    Dude, it's toast if it is shaking !!! Pump it down as best as it will do and remove the cylinder heads, if you need to prove it to yourself or someone spending the money. IMO, correct the obvious...
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    No Interlocks !!!

    This is a very unfortnate situation for all involved !!! And, exactly why control and alarm installations need to be scrutinized by qualified personnel responsible for the mechanical equipment. ...
  10. Thread: chat room

    by clgman
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    No chat !!

    Maybe a suggestion !!! Just brain storming which might lead to a really good idea !!! How about an informal schedule of topics on certain days(nights)that might interest different individuals whose...
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    Bearing wows !!!

    O.K. - Questions, these inserts are in the lower half of a spilt case pump assembly, generally anchored at BDC with a dowel pin,(maybe -maybe not)(keeps them from turning) is this what you are...
  12. Apparent relief valve dump !!

    IMO !! Tell us more about the unit so - answers may be slighty more than generic in nature.
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    Fusite Failure !!

    Obviously you seen ten times more terminal failures than some of us. You attribute the failure to high head pressure, please explain - if older hermetics have the can at near return gas temp and are...
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    More on Grounding !!!!

    Thanks for the research - appreciate the effort - if I can't get up to speed with all of this !!! I won't be asking any more questions.
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    Terminal failure !!!

    While rare, this failure will obviously occur. You may never know the exact cause of the failure because a lot of the evidence is now gone. You can't recover the refrigerant to check for the proper...
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    More Carlyle !!!

    Several posts have offered sound advice, and you should follow it. In addition
    you should be sure the compressor did not sieze up mechanically causing the electrical failure. Remove the cylinder...
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    Grounding !!

    This application requires the entire equipment set up be moved from site to site typically far in advance of any utility activity, placing the responsibility on the contractor operating the equipment.
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    TXVs

    Good for you !!! keep up the good work - the older I get, the harder it is to keep it off, and that's a loosing battle. Places I could squeeze through a few years ago - it isn't happening now.
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    Grounding !!!

    No specifications, other than the resistance must not exceed 20 Ohms. The grounding rod conductors typically get moved from site to site with the equipment, and buried each time. I am curious how...
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    RTU Sales numbers !!

    Perhaps you should post in the business forum, not many techs stay up on national sales figures. IMO !!!
  21. Thread: Pump down

    by clgman
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    Solenoid Pump Down !!

    Many good posts on this topic !!! My two cents would include, that the thermostat / solenoid pump down cycle is a very simple, reliable, and inexpensive system that provides system protection that...
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    Earth gound testing!!

    This is regards to a portable generator, set up at different sites. Actual grounding of temporary panel, generator, load device requires a ground test verification performed with a meter which...
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    Earth Ground Testing !!!

    Anyone have first hand knowledge of Earth Ground Testing performed with a meter. I'm a little out of my area of expertise !
  24. Replies
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    Trane TCH ??

    Did you resolve any of the issues that concerned you with these units or what ?? I agree that if both machines have suffered compressor failures improvements are in order !! Please post results !
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    Difficult repairs !!!

    The mojo said it right about wrenches, you can't have too many, and when you get into one (flared) don't hesitate to cut off the wrench, or heat it with a torch to bend it for a special angle. Keep...
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    06E Compressor

    So what did you find ?
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    Corroded controls two !!!

    I assume your talking about the control cabinet of the unit(I.E. contactor, relays,control board and the like),previous suggestion; or, if the facility has compressed air for whatever reason, a 1/4...
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    TOO much pressure!!

    If you need to select a valve for an immediate application, log on to Henry valve company's web site. Good luck !!!
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    Fuses and more !!

    I believe manufacturers fall into an acception clause, but must pass UL and the Candian safety standards. It's most likely a good thing for them(manufacturers) because according to NEC they violate...
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    Corroded Controls !!!

    Would it be possible on the next unit to pressurize the control cabinet from an air supply outside of the pool room environment - just a thought !!
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    Old tools !!!!!

    Thanks for the heads up - definitely will bid.
  32. Thread: Down to Earth

    by clgman
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    More on megging !!!

    There are fault situations that definitely require the use of a megaohmeter to locate an active hard to read fault, or a near potential fault. Case in point, commercial / professional office park...
  33. Thread: Twinning RTU's

    by clgman
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    Twinning RTUs -really !!!

    I suppose it could done, but why !!! Really no different than twinning a couple of furnaces only on a larger scale. As already mentioned, controls and the air flow are the major concerns. Be sure...
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    Carrier Tripping out !!!

    The breaker that trips, is it the breaker which is part of a Carrier unit, or it is a breaker part of a built up service panel ? If it's a Carrier breaker, they are typically rated for "Must Hold...
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    FJC Who !!!

    Not familiar with that brand - are they made in the USA or elsewhere !!
    I might ask what the warranty issues might be even though it runs, but say it won't reach a deep vacuum in six months - is...
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    Compressors cycling !!

    Is the machine cycling on the temperature control (t'stat with interface board)or electronic room or zone sensor control, or is the microprocessor cycling the compressors due to low coil temperatures...
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    Fuses !!!

    O.K., I will lighten up a bit !! The point I was attempting to make was, there are other service guys out there who don't have a Nate patch on their shoulder - that might have a clue about this...
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    Can't find - no longer made ?

    Would anyone know where to purchase the Bonney brand small refrigeration set. It was available in a small green metal box, had several service valve adapters, packing nut adapters, extensions,...
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    Fuses !!!

    You're not suppose to fill it in for him -
  40. Replies
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    Fuse Issues that keep on giving !!

    Your obviously impressed by, or endorsing Nate personnel, thats fine. However, please review proper sections of the NEC, or whatever electrical code has jurisdiction in your area pertaining to...
  41. Thread: tubing benders

    by clgman
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    Tubing benders and more !!!

    Try the Black Book of Tools from Colonial Hardware !!
  42. Thread: Hvac tools

    by clgman
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    Too many tools - stock - no room !!

    Isn't that the truth !! And the vans keep getting smaller !!
  43. Thread: Trane txv

    by clgman
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    TXV sizing !!!

    It depends, your the guy on site - so you have to consider as much about the system as you can. Does it have a long piping run, is there evidence of low or high superheat conditions, does it suffer...
  44. Thread: Down to Earth

    by clgman
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    Oh no my megohmeter !!

    That 20 megohmeter reading - is directly related to what you are testing - some new larger motors test out at 1 (thats one meg) from the factory. This would be a new compressor motor. So, again,...
  45. Thread: Down to Earth

    by clgman
    Replies
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    Megohmeters !!!

    Not a wicked electrical guru - but I'll give it a go !!! A megohmeter actually induces a DC voltage into the device being tested. Usually it is done at twice the actual AC voltage that the device...
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    York or what ??

    I would not base the purchase on a brand name basis, but rather the quality of the contractor(s) and parts availability of a particular brand. Some major distributors have multiple locations, making...
  47. Thread: Trane txv

    by clgman
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    TXV Change out !!

    So if the OEM valve is non adjustable, with a non removeable power element, why would you replace it with the same non serviceable type device. Especially if you don't know how the OEM valve...
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    Fuses !!

    Yes, your right !! This can be a potentially dangerous business. Not for the untrained novice. What does any piece of HVAC service literature state, or IOM, work to be performed by an...
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    Gas in hose !!

    Like all answers, it depends. How long the hose is, what the residue pressure was in the gauge manifold from the previous call, what the existing pressures are when you connect into the beverage...
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    Intermittent fuse life !!

    You mentioned, depending on the type of weather !! What type of weather ??
    I'll assume, hot humid, maybe raining !! (maybe not) For the sake of arguement - I'll continue !! In my opinion, secure...
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