mack rd Air conditioner PSI - what should it be? help

Discussion in 'Mack Forum' started by john510, Jun 22, 2011.

  1. Jun 22, 2011 #1
    john510

    john510 Bobtail Member

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    Jun 22, 2011
    0
    Have a mack rd model and trying to find out what the gauges should read on the air conditioner LOW pressure side and HIGH pressure side ?

    want to make sure its not over charged, because My clutch unit is not kicking off automatically..

    temp in my area in the summer is 70-90 degrees

    its blowing very cold air..

    any help would be great
     
    john510, Jun 22, 2011
    john510, Jun 22, 2011
    #1
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  3. Jun 26, 2011 #2
    clifton l

    clifton l Bobtail Member

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    Jun 6, 2011
    vandalia,il
    0
    pressures will vary depending on the temp out.
    low side should run between 35-45 psi
    high side should not go over 350 psi but the fan pressure switch will have a rating that will cycle the fan on at a set psi. such as 300 to 315.
     
    clifton l, Jun 26, 2011
    clifton l, Jun 26, 2011
    #2
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