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  1. I use a digital psychrometer that tells me rh% db...

    I use a digital psychrometer that tells me rh% db and wb. I use it when I am charging a system to tell me what kind of load is on my evaporator. If the wb is close to the db but the db is relatively...
  2. Changed out the motor today and it works now. It...

    Changed out the motor today and it works now. It was a bad motor just having those readings match up like that really threw me off.
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    Those are good formulas too know. It was around...

    Those are good formulas too know. It was around 65f oat. I believe I said that I know it has not load but the temp in the house is 72f but the return air is 60f and I believe this is due to the...
  4. questions about resistance test results for psc condenser fan motor

    I diagnosed a condenser fan motor as bad the other day. 35/10uf cap was good. Its a heat pump and I had 240 between my load side of my defrost relay and the common phase on my contactor with...
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    Also didnt mention blower is in high speed and...

    Also didnt mention blower is in high speed and checked run cap. 10 uf only putting out 8.5 uf so I changed it and it seemed like the blower ran better and my suction pressure came up to the point I...
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    Low airflow concern

    Working on a heatpump today for a maintenance and just couldnt get the pressures to suit me. Couldnt get my evap above 29f saturation. Clean condenser clean evap clean filter. suction pressure is...
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    ok

    ok
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    You might have a grounding issue. I know that...

    You might have a grounding issue. I know that spreading the crossovers isnt ideal, but no one here has ever done that? I am not talking about spreading them wide open just enough to be able to get...
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    Thats correct, my mistake. 27.72"w.c. is 1 psi....

    Thats correct, my mistake. 27.72"w.c. is 1 psi. So yeah 14"w.c. is a half psi. Shows you how small amount of pressure 7"w.c. really is. Its about 1/4 of a psi. Doesnt take much to clog that. I was...
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    I like your attitude, you enthusiasm tells me you...

    I like your attitude, you enthusiasm tells me you will do well in the trade. Dont sweat what some of these guys say on here because no matter who is the greatest technician in the world now they...
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    Some units use the air handler control board to...

    Some units use the air handler control board to bring on second stage. It uses run time as a guide, if it has ran for a predetermined length of time it will energize y2. I personally think a 3 heat/2...
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    deluthtrading.com.....footwear......men's Keen...

    deluthtrading.com.....footwear......men's Keen Pittsburgh soft boot.....about $200 after shipping but well worth it.
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    x2 My company bought me an Appion recovery...

    x2 My company bought me an Appion recovery machine and a brand new vacuum pump, not to mention a new van, couple of ladders, and gps, and I couldnt imagine letting anything happen to them. I think...
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    I use 2 sets one for 22 and one for 410 because...

    I use 2 sets one for 22 and one for 410 because that is what I was told to do. I never really thought the minimal amount of oil in the hoses would make that much difference. When I take my gauges off...
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    I think all compressors should have a start...

    I think all compressors should have a start capacitor.
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    808

    Those are some pretty cool pliers. I want a...

    Those are some pretty cool pliers. I want a wrench that I can carry in my service bag on a call and dont have to go back to the van for my 8" to get the cap off of a service valve.
    1 3/8" outta...
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    808

    I found one. Channellock makes a 6" that opens to...

    I found one. Channellock makes a 6" that opens to 1 3/8" found it for $18.99 at Northern tool and equipment.
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    Looking for a wrench

    Does anyone know a company that makes a 6 inch adjustable wrench with an extra wide jaw, like 1 1/8" or better?
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    I would tell the to close the dampers on the...

    I would tell the to close the dampers on the diffusers, or atleast run the upstairs heat a little bit and cut in a diffusser in the attic and damper it down in the summer. Another thing is I have...
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    To the op, dont check the terminal points on your...

    To the op, dont check the terminal points on your relay to ground, check across them. Firswt see if you have 24 volts on the relay coil, if you do then put your meter leads on your terminal points,...
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    check the grounding/bonding

    check the grounding/bonding
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    I will be the first to say that duct sizing is...

    I will be the first to say that duct sizing is not my strong suit. I cant read a ductulator very good at all, I dont know how to figure out how big my supply duct should be for the size of the system...
  23. Well I dont know if I am the only one or if I am...

    Well I dont know if I am the only one or if I am doing it wrong but I have never charged a refrigerant circuit any other way than throttling liquid into the low side, with my high side gauge always...
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    The way the by-pass works is you set the weight...

    The way the by-pass works is you set the weight on the barometric damper to close when all dampers are open, less static pressure against the damper and the weight forces the damper to close, and...
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    yeah thats pretty obvious now that youve...

    yeah thats pretty obvious now that youve mentioned it, but if you had 2 speed compressor and a bypass or dump zone.
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