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  1. Replies
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    Yup, 35 is small, plates are cheap compared to a...

    Yup, 35 is small, plates are cheap compared to a new compressor.
  2. Replies
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    Good job! I just did a horrible one. 30 year old...

    Good job! I just did a horrible one. 30 year old AHU. 2+Ē shaft with two 27Ē air foil wheels. Had to cut everything off with grinder except the sheaves. Wheels ended up in many pieces, shaft...
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    Just cut out the housing, then patch it back...

    Just cut out the housing, then patch it back together. Be smart about the patch, bolts or welding, be careful relying on sheet metal screws of any size. Unless you make the patch larger than the...
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    Canít really tell by the pic there. Is the pic...

    Canít really tell by the pic there. Is the pic with the puller attempting to remove the blower wheel? Not sure since youíre clamped around the shaft and also pushing on the shaft.....

    If youíre...
  5. Sounds like a piping design issue with the coil. ...

    Sounds like a piping design issue with the coil.

    I would weigh in factory charge, and let it go. If you have a solid column or liquid at the metering device, you should be fine.
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    yeah, I've been having a hard time finding them. ...

    yeah, I've been having a hard time finding them. people tell me Walmart sells that size, but I don't know.
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    Hmm, Iíve used 19 successfully.....Iíll try a 17.

    Hmm, Iíve used 19 successfully.....Iíll try a 17.
  8. Replies
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    that's funny.....you guys motivated me to finally...

    that's funny.....you guys motivated me to finally turn the heat on today. the Ol' girl fired right off! Woohoo!! hopefully get another year out of her!

    I've been kicking around the idea of...
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    none of us like to be a "parts changer".....but...

    none of us like to be a "parts changer".....but the reality is that sometimes the troubleshooting process isn't identifying the problem, and fixing it.....in some cases it's a process of eliminating...
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    1/4" tube brush, or a 19 caliber gun cleaning...

    1/4" tube brush, or a 19 caliber gun cleaning brush. if it's real bad, pull the inlet head also.
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    there's not much left to check. lemme see if...

    there's not much left to check. lemme see if I've got this correct:

    you've changed the compressor, the filter drier, the HGBP valve (which may actually be liquid injection), installed a shutoff...
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    I was just throwing it out there since he's...

    I was just throwing it out there since he's changed everything else! LOL!!
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    if you look at that manual RunDawg posted a pic...

    if you look at that manual RunDawg posted a pic of (RT-SVX34P-EN)...page 63-64-65 describes (in detail) the condenser fan staging. the pages before explain the compressor staging with and without...
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    I would change the cap tube assembly, and any...

    I would change the cap tube assembly, and any filter driers. Also clean any screens.
  15. Replies
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    Did you change the TXV?

    Did you change the TXV?
  16. Replies
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    759

    Are you sure that model number is correct? I...

    Are you sure that model number is correct? I can't find any trane literature that lists a TEF.
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    there's only a few possible causes. water...

    there's only a few possible causes.

    water pressure regulating valve failing.

    make up water bypass valve bleeding by.

    expansion tank bladder busted and/or tank water logged....as water...
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    the first thing I do to air dryers having...

    the first thing I do to air dryers having problems is clean the coils. they may not look bad, but they usually are dirty.

    Is your hot gas bypass bleeding through when it shouldn't be? or running...
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    One thing to keep in mind about motor selection...

    One thing to keep in mind about motor selection is that no manufacturer can lie about amp draw. They can rate HP, wattage, etc. at whatever they want. But when it comes to amp draw, they legally...
  20. Thread: Screw Vs Other

    by 71CHOPS
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    I dunno, is there anything in a scroll compressor...

    I dunno, is there anything in a scroll compressor that is vastly different from any other compressor......other than how it compresses refrigerant?

    or how about a recip?

    I don't understand...
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    you can't check the level unless the chiller is...

    you can't check the level unless the chiller is running 100% loaded for about 20 minutes or so.

    34% should be in the glass. if you're reading low levels and you have liquid in the glass, you may...
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    If I was gonna quit, that would be my resignation...

    If I was gonna quit, that would be my resignation letter!::DD:
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    As with our previous GURU, it was a long time...

    As with our previous GURU, it was a long time coming......I hope he returns with a new outlook.
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    we've been installing Rheem for the last year or...

    we've been installing Rheem for the last year or so, they seem to be pretty good units. our guys just did 2 25 ton RTU's.....we'll see how they do. we've done several smaller RTU's, splits, etc. ...
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    that is the indoor unit model number.....outdoor...

    that is the indoor unit model number.....outdoor would be a TWA or TTA. neither of those units show a P66 (or any) speed control in the wiring diagram, only an optional ON/OFF fan control with the...
  26. we had a similar discussion at our last safety...

    we had a similar discussion at our last safety meeting. between the individual skills each of us possess, our company can tackle pretty much any task.

    the knowledge base here is limitless.
  27. Replies
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    I just realized you have another chiller thread...

    I just realized you have another chiller thread going in this forum.......is this problem with the same chiller that you are asking about the orifice size?
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    you have a restriction. the gauge jumping and...

    you have a restriction. the gauge jumping and then coming down is refrigerant boiling off. the head pressure is low because you're stacking refrigerant on the high side, and it's being cooled by...
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    His last activity was over 3 years ago, but he...

    His last activity was over 3 years ago, but he does have an email in his bio. Might shoot him a message.
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    I would guess the charge at around 25 lbs. if...

    I would guess the charge at around 25 lbs. if youíre going into a vacuum, you definitely have a restriction. wether itís a solenoid, txv, etc...
  31. Thread: Weird readings

    by 71CHOPS
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    Always good practice to remove all the wires,...

    Always good practice to remove all the wires, then discharge and test. Youíre reading was likely off because the wires were still connected. Although, Iíve seen motors with caps very low that...
  32. You canít just use a single measurement, you have...

    You canít just use a single measurement, you have to take everything into account. Centrifugals, I pay more attention to discharge SH, along with approach. Etc.

    Iíve never used subcooling or...
  33. Thread: Some Oldies

    by 71CHOPS
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    that stuff drives me crazy.....you're getting...

    that stuff drives me crazy.....you're getting paid to pull the covers and trace wires.....you can also get paid to put them all back!

    just had to clean up a simple 4x4 electrical box last week. ...
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    when you post a question on this board, you're...

    when you post a question on this board, you're going to get people that think from all different perspectives, and angles.....not just your specific question you wanted answered.

    Asking people to...
  35. it would also freeze the pipe, which could help...

    it would also freeze the pipe, which could help you trace it though the walls with a FLIR.

    airgas, and other suppliers have CO2 bottles with dip tubes, but you have to specify you want one with...
  36. high air velocities can also lift condensate off...

    high air velocities can also lift condensate off the coils into the air stream.
  37. this is what I would try first.....if that...

    this is what I would try first.....if that doesn't work, then try Jay's idea.....oh crap, I used the wrong username too!! LOL!!


    seriously though, unless someone recently hung some pictures or...
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    they are a fatter than standard O-ring....off the...

    they are a fatter than standard O-ring....off the shelf kits don't have the right sizes.

    the store you bought them from should be able to also order the kits. if you bought them on amazon,...
  39. I've used a 2500 psi, but it will eat up the...

    I've used a 2500 psi, but it will eat up the plastic. there's a reason goodway has a 300 psi machine.....
  40. Replies
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    As was pointed out, there really isnít any way to...

    As was pointed out, there really isnít any way to say exactly how much capacity you are losing.

    Without having correct flow to begin with, you arenít even in the ball park of design capacity. ...
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    I donít mean to be rude, and I understand your...

    I donít mean to be rude, and I understand your perspective...BUT...if you know you have 50% of design flow through the coil, your questions are meaningless.....:
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    are you sure you received a brand new valve? ...

    are you sure you received a brand new valve?

    I've bought stuff from amazon that was used. I think some people buy new replacement items for something they own, then return their used stuff as...
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    Thanks for the update! Best news is that supco...

    Thanks for the update! Best news is that supco meter hitting the trash can! LOL!!
  44. Replies
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    You may get more responses in the controls forum.

    You may get more responses in the controls forum.
  45. Replies
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    Corporate policy for the big boys is cylinders at...

    Corporate policy for the big boys is cylinders at the center of the bulkhead. Theory is they are farthest from any possible range from collision.

    I keep all mine in rear driverís corner. ...
  46. holy crap, and then one gets updated after 5...

    holy crap, and then one gets updated after 5 years!:cheers:
  47. Thread: McQuay screw

    by 71CHOPS
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    dude, that post was TEN years ago.....the OP...

    dude, that post was TEN years ago.....the OP hasn't even been back to the site for 9 years. if you're having a similar problem, start a new thread!
  48. Replies
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    Good eye, looks like the guy doesn't do much...

    Good eye, looks like the guy doesn't do much actual work.
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    you could also have a combustion / ignition...

    you could also have a combustion / ignition issue. If your gas valve is open too long before the igniter starts, you'll get that on start up.

    It's a great idea to inspect the flu, but I would...
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    I once had a commercial split system in a...

    I once had a commercial split system in a doctorís office. It was 7.5 tons, they only needed around 4 tons. I was able to short charge the unit to cut capacity while still maintaining motor...
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