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Type: Posts; User: Hrdworkingacguy

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  1. Replies
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    Drawing LRA always means locked rotor...A psr not...

    Drawing LRA always means locked rotor...A psr not dropping out the cap will run normal for a second or 2, then fry the start winding or open the ip...:eek:
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    If you don't have a cap on a single phase unit...

    If you don't have a cap on a single phase unit that is within range they won't start and that means you will see LRA. It could also need help starting and a 5-2-1 kit will help for a while or it...
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    Mind you this info might be a little dated but...

    Mind you this info might be a little dated but trane used to and might still have a ramp schedule. The dehumidify on low speed for a few(7ish???) minutes then ramp up a few times... When they get...
  4. When I installed my own systems I made a H out of...

    When I installed my own systems I made a H out of unitstrut except with two cross pieces. It was the size of the secondary pan. And the pan was 1" all he way around larger then the unit...I put...
  5. So it's fine when Bush sees the consequences of...

    So it's fine when Bush sees the consequences of trying to make his daddy proud...It amazes me that this guy is a hero, and not one ounce of blame for lost lives and wasted money falls on him...Yet...
  6. They make a meter and an ohm scale...Isolate and...

    They make a meter and an ohm scale...Isolate and test compressor terminals c-s, c-r, s-r....Then check to ground...Do the same for the OFM...

    Nothing grounded, nothing shorted and your 90%...
  7. You can get refrigerent into a unit with the...

    You can get refrigerent into a unit with the compressor off...Granted it's harder and slower, but it's all about pressure difference...:eek:

    The only time I will use a recovery machine to charge a...
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    193

    Pump it down, cut it out, seal the ends of the...

    Pump it down, cut it out, seal the ends of the line set (to the Ahu) with anything(tape, braze)...When you reinstall add a drier, pull a good vacuum and remember they already invented the...
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    Seems like your choice is between smaller...

    Seems like your choice is between smaller tonnage/Higher seer, or larger tonnage/lower seer...:eek:
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    Its not that it won't work its that it might not...

    Its not that it won't work its that it might not work and that's the first thing they will make you change when you have a comm issue. I am a mitsu DSG and I hear this almost every day...:eek:
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    There aren't words to describe how ridiculous...

    There aren't words to describe how ridiculous this comparison is, I am ashamed I actually read it. :eek:
  12. Replies
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    The wire requirement is 16ga stranded...no range...

    The wire requirement is 16ga stranded...no range of wire sizes just 16ga stranded...:eek:
  13. Higher pressures are true, but it takes less pump...

    Higher pressures are true, but it takes less pump energy to compress than r22...The machines are made of materials designed for r410a...Compare the RLA of a 5 ton scroll r22 vs a 410a. The 410a...
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    Only valves seem to use the d in most of the...

    Only valves seem to use the d in most of the systems I support...:eek:
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    I started as a installer helper in 6 months I was...

    I started as a installer helper in 6 months I was lead COD installer. Helped build stands and elbows and learned layout, after 3 years of doing installs I went to service school...Now 16 years later...
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    I would get rid of the D, and just work with P...

    I would get rid of the D, and just work with P and I...That makes it how many steps and how fast do you want to get there...Leave the Nastradamus style predictions to Mrs Cleo...:eek:
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    This is discharge superheat and imho the single...

    This is discharge superheat and imho the single most useful tool we have at our disposal...:eek:

    Fixed orifice machines superheat is based on compression ratio...higher ratio drives more liquid...
  18. Sounds low on refrigerent to me...also I wouldn't...

    Sounds low on refrigerent to me...also I wouldn't try to reverse engineer the return temp based on 20degree dT...I would check what it is at the unit...Will probably be low...:eek:
  19. Replies
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    Restricted return, or low supply air flow???...

    Restricted return, or low supply air flow??? :eek:

    52 degree suction line, it isn't freezing due to a refrigerant issue.
  20. Replies
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    These viewpoints are from the far left or the far...

    These viewpoints are from the far left or the far right, while most people like me are in the middle, Conservative on some things and liberal on others...:eek:
  21. Also there is a difference between what the net...

    Also there is a difference between what the net oil pressure should be and what the safety should be set to...it's been a while but i believe those compressors make 35# dP but the safety should need...
  22. I tried explaining it last night,but I will...

    I tried explaining it last night,but I will again...the temperature of the non unloading head is the baseline for what the loading heads should be when they are loaded(the will be a little lower...
  23. This leads me to believe it's not loaded in the...

    This leads me to believe it's not loaded in the first place...:eek:
  24. You don't check a compressor like that unloaded,...

    You don't check a compressor like that unloaded, then use that info for charge adjustments. You want to charge it to full load then make sure it does what you expect at part load...eek:

    10 degrees...
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    Mitsubishi recommends a 410 flaring tool and has...

    Mitsubishi recommends a 410 flaring tool and has some documentation to show the differences and why it's important...unfortunately it's not something I can share at the moment, but if I remember I...
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    The whole trade is about thinking on your feet....

    The whole trade is about thinking on your feet. Just tell him what you think(only when he asks). Being wrong is never a problem, its being unwilling to put the time in to learn the right answer that...
  27. I don't believe there is such a thing as a biflow...

    I don't believe there is such a thing as a biflow suction drier. I have never seen one, but I have never looked either...most of the time the conditions that wipe out a compressor are the same ones...
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    I missed a d. It modulated, pulse width modulated...

    I missed a d. It modulated, pulse width modulated ac...:eek:
  29. There is a relationship between coil volume...

    There is a relationship between coil volume between the outdoor and indoor coil that has to be maintained...typically 13seer condensers are bigger then 10 seer...In a heatpump mismatch is a deal...
  30. Given that the unit is a 10seer r-22 you are...

    Given that the unit is a 10seer r-22 you are better off doing the compressor if that what "bad condenser" means...Not sure if it's a heatpump or strait cool...Heatpump mismatch will cause issues...
    ...
  31. You changed a Honeywell for a lux...ouch...:eek:

    You changed a Honeywell for a lux...ouch...:eek:
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    I always thought this was the place where the...

    I always thought this was the place where the religious right tells us how Obama sucks and democrats are taking our rights...never knew what ARP meant. I always thought it meant association of...
  33. First company Ahu ... :eek:

    First company Ahu ... :eek:
  34. Replies
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    Bench grinder unit from a bygone era when the men...

    Bench grinder unit from a bygone era when the men were men and the sheep were scared...Big boy stuff is the best. Makes me wonder why anyone would want to do residential...:eek:
  35. Bad txv and low airflow. Take the bulb off and...

    Bad txv and low airflow. Take the bulb off and over feed with bad airflow will turn a compressor into a liquid pump...:eek:
  36. Replies
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    The only way to wire it is according to the...

    The only way to wire it is according to the machines schematic. It will call out what is p1 p2 p3 from there phase a to p1, b to p2, and c to p3. Certain people are talking about motor hook up and...
  37. Non condensables ??? :eek:

    Non condensables ??? :eek:
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    Mitsubishi compressors are ac that get fed pulse...

    Mitsubishi compressors are ac that get fed pulse width modulate aka simulated ac...:eek:
  39. Even if you won't sign for it the manufacturer...

    Even if you won't sign for it the manufacturer will say shipping damage and tell you to file a claim with the trucking company...They have interesting ways of making the end user or installing...
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    We all hear of company's going behind us doing...

    We all hear of company's going behind us doing seconds opinions...Home owner may have wanted a parallel opinion??? I would have knocked on the door said your responding to the call that they didn't...
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    You can't have voltage with the wires off but...

    You can't have voltage with the wires off but nothing with them landed on the contactor...Mabey for a split second before the xmfr opens...voltage to ground on the common side and no voltage across =...
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    Nothing wrong with apartment guys...They just...

    Nothing wrong with apartment guys...They just typically have lack of knowledge, resources, time, want, ability, support...Keep in mind the ones that handle their business I never hear from...it's the...
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    Dehumidification is a product of run time and the...

    Dehumidification is a product of run time and the coil being below the dew point...if your controlling to humidity you aren't controlling to sensible temperature for the most part...those stats just...
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    It's a problem...Time to get new friends...:eek:

    It's a problem...Time to get new friends...:eek:
  45. At least those units work really well in free...

    At least those units work really well in free cooling..After you shovel out the snow covering the economizer...:eek:
  46. Subcooling will guide you to the promised...

    Subcooling will guide you to the promised land...Well if not there, it will get you to the bar with the job done...:eek:
  47. The probably hung it right where the print...

    The probably hung it right where the print showed, same orientation and everything, because that's the way the supply duct was running...:eek:
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    Have to love apartments...:eek: Actually that...

    Have to love apartments...:eek:

    Actually that looks like a commercial bldg run by an apartment maintenance man.
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    There is a guy I have used before in a situation...

    There is a guy I have used before in a situation similar to this. His name is Eddy Current. He tests tubes for structural issues...Far to many things have to happen to freeze up that chiller. Not...
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    Seriously though...Seems like someone or...

    Seriously though...Seems like someone or something caused that to be a liquid pump...Are there any parts of the piping that might cause an oil trap on the suction side...I have seen replaceable drier...
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