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Type: Posts; User: koolerdude

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  1. Replies
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    848

    I have not much luck with the cap tube system. ...

    I have not much luck with the cap tube system. my latest one, i had to change both. Length of the cap tube is as recommend by the manufacture and larger capacity filter dryer. not working so good....
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    848

    Liquid filter dryer clotted

    What is the likely chance you changing just the liquid line filter dryer and not having the change the cap tube on a refrigeration system?
  3. Replies
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    1,108

    Right on. I wasn't aware of this. the...

    Right on. I wasn't aware of this. the temperature at the inlet and the out let of this filter dryer is the same. what a bummer.

    Thanks for the advice.
  4. Replies
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    1,108

    sight glass w/ bubble

    the sight glass for this refrigeration system has bubble. it's in a system for a walk-in cooler. With subcooling about 30 deg.the sight glass still show bubble. There is a liquid receiver on the...
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    compressor replacement

    I am to replace a compressor for a true freezer. Can I buy compressor with the same HP, Voltage, and use the same type of refrigerant?
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    601

    I work on commercial Freezer units under 1 ton...

    I work on commercial Freezer units under 1 ton refrigeration.
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    601

    approximate Pressure HI/Low

    for sealed system, the hi side pressure is approximately at ambient plus 30 or 15 deg. covert to pressure? been taught to look for it at ambient plus 30. and was also told that the second one works....
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    965

    I got rid of all the ice from the evap before...

    I got rid of all the ice from the evap before adding refrigerant and did some other measurement. the LSP was low initially. the pressure rise and would go up any further. (for curiosity, i added...
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    965

    It was 404a system with CRV at the suction line. ...

    It was 404a system with CRV at the suction line. From what I learn is that the CRV keep the compressor from flooding with liquid refrigerant at the start up, like after the defrost cycle. I thought...
  10. Replies
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    965

    True freeze does not go down to -20

    on this call, the 2 door true freezer's evap is iced up. One of the evap fan doesn't work. I changed out the fan. There is crankcase pressure regulator in the system. LSP was at 10 psi after...
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    2,595

    Good job on getting this tough one out of the...

    Good job on getting this tough one out of the way. did you use the sniffer? and how long did it take you to find this leak after pressuring the system with nitrogen?
  12. Replies
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    My filter dryer is a undersized. Its max...

    My filter dryer is a undersized. Its max capacity is 1/2 ton and the cooler is about 3/4 ton unit. the cap tube is cut to the length specified by True Manufacture. It is off by the thousandth,...
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    GDM-79 TRUE 2 DOOR COOLER

    This cooler was not cooling. My diagnosis was that the is a restriction. I change out BOTH Cap tube with length and size according to TRUE'S spec. Changed filter dryer also. before leaving the...
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    5,680

    Let me just say this, "your problem is unique." ...

    Let me just say this, "your problem is unique." I think you might be confused TXV and AEV. I have limited experience in this industry and I never seen any TXV without sensing bulb and neither AEV...
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    5,680

    Yeah, there is a real problem here. You donot...

    Yeah, there is a real problem here. You donot provide sufficient info.
  16. Replies
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    590

    well, when this system to be seated back on top...

    well, when this system to be seated back on top of the brine-solution container, there is no room to look. It might be small leak. Refrigerant is heavier than air, not sure how long it will stay in...
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    590

    leak detection

    I got a call to check out a soda fountain unit, it is water-cool evap, force air condensing unit. I got the sniffer out checking for leak and this sniffer beep like crazy when i place the nozzle...
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    I'll do that. Thanks.

    I'll do that. Thanks.
  19. Replies
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    1,073

    I went thru and finished training at an Hvac-r...

    I went thru and finished training at an Hvac-r trade school. I started working for an Hvac company after school end in June. My boss did the selling, proposal and pricing. His clients want cheap,...
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    Missed match system

    I just replaced a new 13 seer 3tons condensing unit today to an existing evap coil and I got some weird data.
    pressure was off. low side was at 62 n high side was 250 during the 90deg out side temp....
  21. Thread: Hot Shot

    by koolerdude
    Replies
    13
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    6,331

    i used hot shot once to replace R-12 med reach in...

    i used hot shot once to replace R-12 med reach in cooler. i vac out the R12 N weight in hot shot to about 85 % or so of R-12. Hi pressure shot up the roof and the discharge temperature is freaking...
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    4,005

    New update: I changed one of the relay...

    New update: I changed one of the relay (suspected of high amp draw causing relay to burn) and now the unit is working ok. making ice but the harvest cycle is at 30 min. the owner said it used to...
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    if i pump down with the gauge manifold is front...

    if i pump down with the gauge manifold is front seating. this vac pump down to single digit, really fast.
    so i assume it is a good machine.
    n next time i wont be stress out. just charge n run......
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    Tried pressure test at 275 and pressure going...

    Tried pressure test at 275 and pressure going down about 5-10 psi in about 15min or so. I cut out Styrofoam insulation, used soap bubble but nothing. also put some dye too and waiting to see how...
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    Thanks all for ideas. My vac pump is fairly new...

    Thanks all for ideas. My vac pump is fairly new one, used to pump 6 units, and its it a 7 cfm pump. my instructor from school says that it's best to pump to 500 micron when micron gauge is used. i...
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