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  1. #1
    Brian_UK's Avatar
    Brian_UK is offline Moderator I am starting to push the Mods: of RE Site Moderator : and general nice guy
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    Cleaning a Semi-hermetic Compressor



    Just pulled out a Frascold semi, running on R1270, which suffered a major electrical failure.

    I haven't seen inside fully yet but the oil looked black and carbonated, windings were well blown according to the endoscope view I had.

    Has anyone got any recommendations for the best, and easiest, way of cleaning the compressor internals?

    Bearing in mind that the lump weighs over 200kilos I can't easily flip it over to spray around inside.
    Last edited by Brian_UK; 25-11-2013 at 09:36 PM. Reason: Grammar


    Brian - Newton Abbot, Devon, UK
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  2. #2
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    Re: Cleaning a Semi-hermetic Compressor

    Easiest way would be to send it to rebuilders!
    Mostly found in Oxfordshire, UK :)

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    Re: Cleaning a Semi-hermetic Compressor

    Rebuild)

    To change the windings it'll need to be flipped, block and tackle to ceiling, strip heads and base plate while doing windings, re build will probably be cheaper labour wise. For actual cleaning then wd40 and lots of monkey spanners keks or any handy rags.
    Mostly found in the southern part of this green and pleasant land.

  4. #4
    Brian_UK's Avatar
    Brian_UK is offline Moderator I am starting to push the Mods: of RE Site Moderator : and general nice guy
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    Re: Cleaning a Semi-hermetic Compressor

    Quote Originally Posted by monkey spanners View Post
    Easiest way would be to send it to rebuilders!
    Welcome to my cheapskate world.
    Brian - Newton Abbot, Devon, UK
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    Re: Cleaning a Semi-hermetic Compressor

    Do what my old boss does and paint it with Hammerite, Fixed!
    Mostly found in Oxfordshire, UK :)

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    Re: Cleaning a Semi-hermetic Compressor

    Quote Originally Posted by monkey spanners View Post
    Do what my old boss does and paint it with Hammerite, Fixed!
    Including the crank case oil sight glass

    Rob

    .
    .. ... -. .----. - / -- --- .-. ... . / -.-. --- -.. . / --. --- --- -..

  7. #7
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    Re: Cleaning a Semi-hermetic Compressor

    Quote Originally Posted by Rob White View Post
    Including the crank case oil sight glass

    Rob

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    You've seen his work then!
    Mostly found in Oxfordshire, UK :)

  8. #8
    Brian_UK's Avatar
    Brian_UK is offline Moderator I am starting to push the Mods: of RE Site Moderator : and general nice guy
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    Re: Cleaning a Semi-hermetic Compressor

    Our motor rewind guy had pulled the rotor and windings by the time I got to look at it this afternoon.

    Seems like one of the bearings has gone because you can 'rock' the shaft up and down; also the the inside of the windings have polish marks where the rotor has been making contact.

    Good collection of swarf under the motor, luckily the oil strainer held it back from the crankshaft.

    Con-rods coming out tomorrow.
    Brian - Newton Abbot, Devon, UK
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    Re: Cleaning a Semi-hermetic Compressor

    Hi Brian.
    I have washed comps out before with Jizer. A hand atomiser and plenty of rags!
    Worked well.
    It is not a 5 minute job mind!
    Lots of nitrogen and deep vacuums will prove no more moisture and be prepared for a couple of oil and filter changes.
    But it is do-able!
    You can even with care use the nitrogen to air blast the crud away (WEAR OLD GEAR AND GOGGLES MIND!)

    good luck.
    Grizzly
    Last edited by Grizzly; 26-11-2013 at 11:34 PM.

  10. #10
    Brian_UK's Avatar
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    Re: Cleaning a Semi-hermetic Compressor

    Thanks Grizzly,

    Luckily the workshop has a parts washer so I'm going hang the body over the washer and hopefully get the worst out that way.
    Brian - Newton Abbot, Devon, UK
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