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  1. #40
    Join Date
    Dec 2010
    Location
    Down by the river
    Posts
    1,664
    Suction pressures pretty par for orphis header on the evap, I have never seen 1 run 70#suction or above

  2. #41
    Join Date
    Mar 2011
    Location
    North Carolina Piedmont Area
    Posts
    449
    Where is the superheat and sub cooling. It will be very difficult to give you an explanation for the symptoms which you are experiencing with both. It takes all of two minutes each.

    Troubleshooting is not part of the repair............understand the symptoms and you will find a solution.

  3. #42
    Join Date
    Mar 2011
    Location
    North Carolina Piedmont Area
    Posts
    449
    Where is the superheat and sub cooling. It will be very difficult to give you an explanation for the symptoms which you are experiencing with out both readings. It takes all of two minutes each.

    Troubleshooting is not part of the repair............understand the symptoms and you will find a solution.

  4. #43
    Join Date
    Aug 2012
    Location
    west burbs,il
    Posts
    145
    After fixing leak on discharge line for circuit 2, vacuuming and recharging with 7.4lbs R22.

    Circuit 1
    Suction: 62 psi
    Head: 275 psi

    Circuit 2
    Suction: 66 psi
    Head: 270 psi

    Return: 84 degrees at all 3
    Supply: 65 degrees at all 7
    Tstat: 85 degrees

    After system ran for over an hour temp in kitchen dropped to 81 degrees, but still felt like it was cooling.

    These were the readings after he cleaned condenser coils and replaced both filter/driers. I know these posts get lost sometimes. I don't believe charge is the problem if he dumped in factory spec, r-22 is pretty forgiving if your a little over or under unlike 410.

  5. #44
    Join Date
    Mar 2011
    Location
    North Carolina Piedmont Area
    Posts
    449
    Dude, whats your superheat and sub-cooling. With out this there is no hope.

  6. #45
    Join Date
    Jul 2012
    Location
    Richland, WA
    Posts
    248
    Quote Originally Posted by alcomech View Post
    Dude, whats your superheat and sub-cooling. With out this there is no hope.
    I didn't get a chance to take note because I got a call cause a grill and fryer were down and needed attention otherwise products couldn't be cooked.

  7. #46
    Join Date
    Jul 2007
    Location
    The Hot South
    Posts
    1,326
    Quote Originally Posted by caheiman30 View Post
    I didn't get a chance to take note because I got a call cause a grill and fryer were down and needed attention otherwise products couldn't be cooked.
    Without superheat and subcooling, everything posted is speculation. That should have been taken on your first call and it only takes about 2 minutes.

  8. #47
    Join Date
    Nov 2006
    Location
    Southeastern Pa
    Posts
    18,618
    Quote Originally Posted by canusayinsanity View Post
    These were the readings after he cleaned condenser coils and replaced both filter/driers. I know these posts get lost sometimes. I don't believe charge is the problem if he dumped in factory spec, r-22 is pretty forgiving if your a little over or under unlike 410.
    I have to ask....who is HE? You mean it's not you?

    Who is doing the work.....?
    [Avatar photo from a Florida training accident. Everyone walked away.]
    2 Tim 3:16-17

    RSES CMS, HVAC Electrical Specialist

    AOP Forum Rules:







  9. #48
    Join Date
    Aug 2012
    Location
    MA
    Posts
    39
    Quote Originally Posted by caheiman30 View Post
    Got a trane package unit the doesn't wanna cool properly, kitchen area at restaurant is 83 degrees. One circuit is running good, but the other circuit is running high suction and high head pressures.

    Model #: YCD120B3H0DA

    Circuit 1
    Suction pressure: 67 psig
    Head pressure: 315 psig

    Circuit 2
    Suction pressure: 65 psig
    Head pressure: 250 psig

    I am leaning toward circuit 1 being low on refrigerant, but the lead tech says no that the coil is dirty. I have cleaned the coil and it does lower the head pressure for a while but it will slowly go back up.




    Sent from my iPhone using Tapatalk
    You gotta split those coils man and wash em good... Then check your operating pressures.. I have lowered my head pressure from 325 to 250 easily before by splitting those coils...

  10. #49
    Join Date
    Jul 2012
    Location
    Richland, WA
    Posts
    248
    Quote Originally Posted by pecker head View Post
    You gotta split those coils man and wash em good... Then check your operating pressures.. I have lowered my head pressure from 325 to 250 easily before by splitting those coils...
    As I have said before the coil doesn't split, its a single vertical coil that is a double pass coil from what I have read about it.

  11. #50
    Join Date
    Aug 2012
    Location
    MA
    Posts
    39
    ya man one a little grease gets on a coil it becomes a magnet for pollen...

  12. #51
    Join Date
    Jul 2012
    Location
    Richland, WA
    Posts
    248
    Quote Originally Posted by pecker head View Post
    ya man one a little grease gets on a coil it becomes a magnet for pollen...
    I have chemically cleaned the coil on 2 different visits to mess with this unit and it runs lower head and suction for a little while then slowly gets back up. But this store is due to be moved to another location with all new equipment for the roof in less than a year or so. They just wanna get them thru the rest of this summer cause they are hoping to be into the new building before it gets hot next summer.

  13. #52
    Join Date
    Aug 2012
    Location
    MA
    Posts
    39
    My bad man, TXV or fixed orifice?

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