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We want to remove a non-functioning outside compressor of a Mr.Slim split unit system. Accordng to the installation manual it is either the MS12/15E MSH12/15E model. How do you disconnect and cap off the lines? Is there any special equipment, like a vacuum pump, required? What type of caps can we use?

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  • aschenbrk001 Feb 01, 2010

    Hello, I want to clarify: The unit has not been in use for 10 years and the compressor is not working. Is it possible that some refrigerant is still in the unit? Would it be safe to simpy disconnect it? Or would there be a device where one can check if the refrigerant is still in there and if not then simply disconnect it? Would there be a hazard involved by simply disconnecting it? Thanks

  • aschenbrk001 Feb 02, 2010




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Good day, You will need more than a vacuum pump. If you live in the states you will need a refrigerant recovery unit. It recovers refrigerant and stores it in a ODOT tank for disposal. Unless your licensed you have no access to a device such as this. I would suggest you call a licensed refrigeration or AC company to perform the operation. They would be able to cap any connections at the same time.

Posted on Feb 01, 2010

  • John Hall Feb 02, 2010

    Good day,

    As a licensed refrigeration service tech, I am required to explain the EPA'S regulations.

    However, The law does not,as far as I know, apply to individuals when dealing with this issue.

    I have never known an individual getting into a problem doing what you want.

    I don't know whether the lines are to be just cut, or are in fact fittings.

    If fittings, any commercial refrigeration supply house can supply them. (They are not the same size usually as plumbing fittings. If simple copper, just pinch them shut, and use duct tape, or solder them shut.

    I'm assuming you plan no future with this unit.

  • John Hall Feb 02, 2010


    however, there is the possibility that there is still some pressure in the system. Proceed with caution. Most units have a device similar to a tire stem. You can depress the pin first to check for pressure, otherwise you would need to loosen a line and wear protective gear, including glasses.



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