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I have an older mongram refridgerator (42 inch). It takes 134a, and has two shrader (sp) valves. I assume that the one that goes into the compressor is the low press side. It shows min press (less than 5psi) when compressor is running. Do I charge to a certain press or to a temp or both. And with a empty system how much freon does the system use by weight?

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  • john_gayle_w Mar 11, 2009

    Thanks for the answer. I bought the refridgerator used, no manuals. I have looked top, bottom ,inside, outside, front, back. Where is the model plate found? The compressor has a plate that says 11.8 lra??


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5psi on te low side seems to be a fine pressure to be running at. asfar as how much there a model plate that shows amount of oz.

Posted on Mar 11, 2009

  • Ron Coons
    Ron Coons Mar 11, 2009

    not really sureas to where other then perhaps at top of refrig section, should , include, model number, serial number, anf few ohter important details. there also may be a tech sheet in the upper compartment. it may say so on there


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