ord-4 and orit-6 used for head pressure control - Page 2
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  1. #14
    Join Date
    Sep 2002
    Location
    Hampton Roads, Virginia
    Posts
    1,590

    Re: Re: Bernie.......

    Originally posted by toptech
    They say the truth will set you free, in this case the truth will cost our company warrany labor. So I'm not holding out hope will ever get to the truth.
    Bernie
    I know that feeling!

    [Edited by klrogers on 08-01-2004 at 12:41 PM]
    "Profit is not the legitimate purpose of business. The legitimate purpose of business is to provide a product or service that people need and do it so well that it's profitable."

    James Rouse

  2. #15
    Join Date
    Jun 2001
    Location
    Northwest Indiana
    Posts
    1,302
    The entire point to this post was actually to confirm I wasn't crazy!
    When your boss who is pretty skilled in the field tells you your wrong, it's something to investigate.
    Tahnks again
    Bernie
    If you cant fix it right, try again.

  3. #16
    toptech

    your ORD valve is probably bust.

    plus

    your boss is a ........!!
    Don't interrupt me while i'm talking to myself

  4. #17
    Join Date
    Sep 2001
    Location
    East Stroudsburg, PA
    Posts
    13,215
    Check the Delta P. Trust no factory. Ever.

  5. #18
    Join Date
    Feb 2003
    Posts
    1,166
    Doesn't sound like this systems fixed yet!
    Was it left operating this way!
    You don't mention what remedies were tried or wrenches applied!
    Hopefully the valves were installed with proper isolation, as in
    1. Discharge service valve
    2. Discharge line ball valve past ORD tee
    3. Liquid return ball valve before ORI
    4. Receiver inlet



    Watts New, Ohm My, I been Electrically Commutated. Are U2.

  6. #19
    Join Date
    Apr 2002
    Location
    Ann Arbor, MI
    Posts
    2,985

    Re: Andy.......

    Originally posted by icemeister
    Couldn't the ORD-4 be considered a spring-loaded check valve?
    Many, if not most of your check valves also include a spring. But the spring in the check valve will be light weight and not create much in the way of pressure drop.

    A differential valve is essentially a check valve that has a spring which will require some desired amount of pressure differential to open.

  7. #20
    Join Date
    Apr 2002
    Location
    Ann Arbor, MI
    Posts
    2,985
    Originally posted by condenseddave
    Check the Delta P. Trust no factory. Ever.
    Ditto. But give this "factory" some decent measurements, you should get advice worth you consideration...

  8. #21
    Join Date
    Jul 2000
    Location
    Guayaquil EC
    Posts
    10,248

    Re: Re: Andy.......

    Originally posted by Andy Schoen
    A differential valve is essentially a check valve that has a spring which will require some desired amount of pressure differential to open.
    Well, back in the old days we called 'em spring loaded checks 'cause we couldn't spell diferinshul.

  9. #22
    Besides all of the basics that Dave mentioned I would like to add.....

    The head presure is way too high. Is it high because the ori valve has failed closed and all of the refrigerant is in the condenser driving the head out of sight. If so the condenser outlet should be pretty cold to the touch(relative to the inferno you have going on in the liquid line.)

    Another problem that will cause the ord to pass gas to the liquid line uncontroled is when the system is short of refrigerant. You mentioned the hot liquid line, the hot box temp, the high suction, is the liquid line full????

    your boss is (as we say out here in the west) a crack head if he thinks that the operation of that system is normal. An if he can show it on paper as being normal he should be in politics...

  10. #23
    Join Date
    Jun 2001
    Location
    Northwest Indiana
    Posts
    1,302
    Originally posted by refer dude 2479
    Besides all of the basics that Dave mentioned I would like to add.....

    The head presure is way too high. Is it high because the ori valve has failed closed and all of the refrigerant is in the condenser driving the head out of sight. If so the condenser outlet should be pretty cold to the touch(relative to the inferno you have going on in the liquid line.)

    Another problem that will cause the ord to pass gas to the liquid line uncontroled is when the system is short of refrigerant. You mentioned the hot liquid line, the hot box temp, the high suction, is the liquid line full????

    your boss is (as we say out here in the west) a crack head if he thinks that the operation of that system is normal. An if he can show it on paper as being normal he should be in politics...
    LoL,
    What you described is exactly what is happening(stuck valve)
    Does not matter though, he went back the next day and said all was O.K. Maybe"it's a little short on refrigerant"
    so he dumped some in. Said head was down to 235 from 350
    the night before.(Ambient temp was also around 20F cooler.)
    So, I am not in the business of arguing anymore with the guy that signs my check.
    He was concerned about the labor he'll eat replacing the valve.
    I bet he'll love the labor he'll eat on changing out the 4d Discuss,valve,driers,crane, went it fails! Not to mention the ass chewing from the plant management for being down 2 days instead of 4 hours if he would have changed the valve in the first place.
    Bernie
    If you cant fix it right, try again.

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