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  1. #1
    Join Date
    Sep 2019
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    3
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    new system oil separator precharging

    Good evening to all. My first post ever. Please bear with my inexperience. Fortunately Im a quick learner, so I wont disturb you for too long with my unintelligent questions.

    Im tasked with assisting a another tech with a system start-up: a walk-in cooler 25 HP system. Piping length about 60 feet. The semi-hermetic indicates oil in the sightglass. There is a sealed type oil separator in the discharge line. I remember from school days that separators must be pre-charged with oil prior to start-up. My tech said that this pre-charging was probably done at factory, but not really sure. Is he assuming things correctly?

    Just in case we need to do the pre-charging, I do not see any ports in the separator for adding the oil. Should we just braze a Shraeder type fitting in the piping or is this done through the oil return line? Ive read that there is a float controlled needle valve that will not allow oil through backwards. Please let me know any suggestions.

  2. #2
    Join Date
    Jan 2010
    Posts
    17,350
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    What's the motor make/model if the separator ?
    Here's some Emerson models and their charge amount.
    Attached Images Attached Images   

  3. #3
    Join Date
    Aug 2002
    Location
    Southold, NY
    Posts
    24,407
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    and I was going to say
    What does the IOM say?

  4. #4
    Join Date
    Jan 2010
    Posts
    17,350
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    Quote Originally Posted by pecmsg View Post
    and I was going to say
    What does the IOM say?
    What's going on over there ?

  5. #5
    Join Date
    Mar 2015
    Location
    Medford, N.Y.
    Posts
    5,856
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    Hey VTP99. Do you have an Emerson Form# for that info that you provided. It seems that my Library is lacking that info. Thanks.

  6. #6
    Join Date
    Jan 2010
    Posts
    17,350
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    Quote Originally Posted by TechmanTerry View Post
    Hey VTP99. Do you have an Emerson Form# for that info that you provided. It seems that my Library is lacking that info. Thanks.
    .
    Attached Images Attached Images

  7. #7
    Join Date
    Mar 2015
    Location
    Medford, N.Y.
    Posts
    5,856
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    Thanks Bro! It's already filed and added into my Library.

  8. #8
    Join Date
    Sep 2019
    Posts
    3
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    Thread Starter
    thank you very much!!

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