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  1. #27
    Join Date
    Mar 2004
    Location
    ottawa canada
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    2,110
    Quote Originally Posted by Nuclrchiller View Post
    Graham, are you sure about about that float switch? I just reviewed SB-32A and it shows the purge module with a "Liquid Level Sensor" input.
    Ok lets correct the confusion , there is a float in a purifier but its there only as a safety cut out not as a control float to dump the liquid back into the chiller like a Redi-purge . the purifier is a gravity system and goes condenser to condenser . Redi goes codenser to evap .
    Sorry for the confusion .
    The toy chest is officially full ... I got a new toy..... 2007 Aston Martin V8 Vantage
    You bend em" I"ll mend em" !!!!!!!
    I"m not a service tech.. I"m a thermodynamic transfer analyst & strategic system sustainability specialist
    Best Austin Healey In Show twice in 2013 .....All those hrs paid off .

  2. #28
    Join Date
    Dec 2009
    Location
    Southern US
    Posts
    504
    Wolftre you have mail!!!!
    I'm good at making things cold...You can ask my first two wives!

  3. #29
    Join Date
    Feb 2010
    Location
    MEXICO
    Posts
    475
    if the temperature of the compressor suction drain unit does not drop to 18 f
    eject pump does not activate the float is to avoid unnecessary refrigerant is expelled. if any temperature sensor is out of range does not start the purge unit operation

  4. #30
    Join Date
    Mar 2007
    Posts
    3,134
    Both the purifier and the earthwise purges have liquid level switches. For the switch to fail in the high-level position, the level had to have been high at some point. If the valves are all open, a high level isn't normal.

    A reading of 213 degrees sounds like a shorted sensor or a failed purge module. More likely a sensor. The checkout procedure is in PRG-OM-6A. The suction temp. sensor is a screw-in 10k ohm @ 77 degrees F ntc sensor. If you can get one of the other ones to make good contact on that little suction line, and you can insulate it very well, it will work temporarily until you can get the factory sensor.

    This is the opinion of some guy on the internet.
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  5. #31
    Join Date
    Aug 2009
    Location
    Prattville, Alabama
    Posts
    2,128
    Quote Originally Posted by graham View Post
    Ok lets correct the confusion , there is a float in a purifier but its there only as a safety cut out not as a control float to dump the liquid back into the chiller like a Redi-purge . the purifier is a gravity system and goes condenser to condenser . Redi goes codenser to evap .
    Sorry for the confusion .
    No problem. After reviewing this thread, I see where I accidently used the phrase "float valve" myself once. Oops.

  6. #32
    Join Date
    Aug 2009
    Location
    Prattville, Alabama
    Posts
    2,128
    I've seen an incorrect sensor reading (can't remember if it was high or low) due to corrosion on the purge module where the sensor leads are connected. Cleaning it corrected it, but only temporarily. I ended up replacing the module. The corrosion was fairly extensive in that area.

  7. #33
    Join Date
    Dec 2009
    Location
    Southern US
    Posts
    504
    OP says the purge wont start a and a few posts later says the sight glass is not full. The purge is held out of operation if the level sensor switch is open. Sounds like a stuck switch or a bad connection at the switch and at J3 5-6 at the board!
    I'm good at making things cold...You can ask my first two wives!

  8. #34
    Join Date
    Nov 2008
    Location
    El Salvador
    Posts
    14
    Good morning every one, looks like all the ideas, comments and info point to the suction sensor on the purge, I'm on site now and you were right the sensor is not reading but the lvl sensor is working fine.
    As I say early in the chat I haven't been able to find a sensor that fits or with similar Ohm readings.
    I'm going to proceed to jump the pump compressor and try to control the air release pump manually in 10 to 20 min intervals of opperation.
    Any other idea I can use??

  9. #35
    Join Date
    Mar 2004
    Location
    ottawa canada
    Posts
    2,110
    Any other idea I can use??


    Pocket screwdriver wedged in beside the manual pumpout switch to hold it in works a treat
    The toy chest is officially full ... I got a new toy..... 2007 Aston Martin V8 Vantage
    You bend em" I"ll mend em" !!!!!!!
    I"m not a service tech.. I"m a thermodynamic transfer analyst & strategic system sustainability specialist
    Best Austin Healey In Show twice in 2013 .....All those hrs paid off .

  10. #36
    Join Date
    Jun 2010
    Location
    Tampa, FL
    Posts
    101
    Install bypass hose or remove pumpout orofice for temporary faster air removal.

  11. #37
    Join Date
    Aug 2006
    Location
    Mixing oil and fire with a big spoon.
    Posts
    4,521
    Quote Originally Posted by deltap10 View Post
    Install bypass hose or remove pumpout orofice for temporary faster air removal.
    between this hose and manually jumping out the switch, i would say that you will also need a lot of refrigerant.
    "If you pull one more stunt like you just pulled with Tommy, you won't have to get on a plane because I will personally kick your ass from here to Korea!" - Best of the Best

  12. #38
    Join Date
    Aug 2009
    Location
    Prattville, Alabama
    Posts
    2,128
    Quote Originally Posted by jayguy View Post
    between this hose and manually jumping out the switch, i would say that you will also need a lot of refrigerant.
    This is true. If you must bypass the orifice, use a manual valve with the bypass hose. Use your manifold gauge set or better yet, use a small ball valve with a swivel quarter inch female flare on one end and a quarter inch male flare on the other. I had one that I think was made by Yellow Jacket. Bought it off the rack and you only need one hose. Then you can throttle it down so less refrigerant is lost.

  13. #39
    Join Date
    Dec 2008
    Location
    Dixiana, AL
    Posts
    2,611
    For what it's worth, it's time to get some help from someone that knows the operation of the chiller. You and the customer will come out money ahead in the long run.

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