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Pump Down procedure on multi port mini split system

Discussion in 'General' started by 12, Jan 27, 2023.

  1. 12

    12 Well-Known Member

    To pump down a 2 port mini split that does not have a manifold... what is procedure to pump down refrigerant to the compressor? Is it just like a single port only you drawn down each port to 0 psi separately? Thanks
     
  2. skidooboy

    skidooboy supermotojunkie

    JBraun likes this.
  3. Side cutters and safety glasses if you are a p@ssy :) or call Shervin
     
    ChemGuy likes this.
  4. JBraun

    JBraun Well-Known Member

    You’ll start the compressor manually using a “pump down” or manual override button on the board, then close your liquid side service valve. Continue running the compressor until both gauges go to zero or the internal pressure relief opens, then close the suction side valve. Your refrigerant is now in the condenser, or at least as much as will fit.
     

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