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  1. #1
    Join Date
    Jun 2004
    Posts
    847

    sution acumalator. any idea how to check if oil return hole is plugged

    if changing a compressor on a heatpump and the compressor locked up
    I was concerned about oil return on suction acumalator is plugged?

    I had a hard time recovering the refregerant on this heatpump.
    I noticed ice is build up on suction acumalator.

    I figured if ice is on the acumalator. the level where the ice is freezing is the level of oil in there or the level of refregerant boiling off.

    correct me if im wrong, but its harder to remove refregerant that is mix in the oil than refregerant by it self.

    so I figure maybe the hole is plug. = lock compressor

    Is there any way to check if accumaltor oil return is plug without cutting it out?

  2. #2
    Join Date
    Apr 2006
    Location
    Tyler, Tx
    Posts
    565
    Hmm, this should be interesting to follow.
    Does the accumulator have a separate return for the oil return? or is it one in and one out?
    Philippians 4:13
    I can do all things in him that strengthen me.
    Apostle Paul inspired by GOD.

  3. #3
    Join Date
    Jun 2004
    Posts
    847
    the outlet on the suction accumalator is like a letter J and on the bottom of the J is a small hole with a screen.

    the oil is return in that hole.

    it is a small hole so it wont flood the compressor if liquid is in there.

  4. #4
    Join Date
    Apr 2006
    Location
    Tyler, Tx
    Posts
    565
    It is possible it could be plugged...
    Philippians 4:13
    I can do all things in him that strengthen me.
    Apostle Paul inspired by GOD.

  5. #5
    Join Date
    Jun 2004
    Posts
    847
    i had one that was plug once.

    but im not sure how to check it. with out cutting it out

  6. #6
    Join Date
    Jun 2003
    Location
    Madison, WI/Cape Coral, FL
    Posts
    6,267
    Dump the accumulator, if it traps oil, trapped oil will drain out. When you charge the system, charge liguid into the accumulator. A proper working accumulator will allow a small amount of liquid refrierant through but make the compressor cool to the touch below the suction return and the discharge temperaturer will be hot.
    Regards TB
    Bear Rules: Keep our home <50% RH summer, controls mites/mold and very comfortable.
    Provide 60-100 cfm of fresh air when occupied to purge indoor pollutants and keep window dry during cold weather. T-stat setup/setback +8 hrs. saves energy
    Use +Merv 10 air filter. -Don't forget the "Golden Rule"

  7. #7
    Join Date
    Oct 2005
    Location
    Pacific Northwest
    Posts
    2,266
    If your accumulator is suspect the only thing to do is replace it. Even if you had the old one in your hands, there is no way to verify that oil return hole.

  8. #8
    Join Date
    Jun 2004
    Posts
    847
    I was hoping for a magic answer
    Without pulling it out

  9. #9
    Join Date
    Feb 2009
    Location
    Tallahassee, FL
    Posts
    6,010
    Yea there really is no magic answer - but I too have gave this much thought as I have ran across this often.

    IMO - the frost line does not necessarily indicate being logged with oil. I say that because I have personally cut some out that had a lot of oil and no frost line or some with frost line and not much oil.

    I wish there was more of a precise way to determine when it there or not.

    IMO - I always try to get as much burnt oil out as I can - but cant always due to cost or time crunches.

  10. #10
    Join Date
    Jun 2004
    Posts
    847
    They need to make all receiver, acumalator with tube sight glass

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