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6 Different Hose Setups to Pull an HVAC Refrigerant Line Vacuum!
In this HVAC Vacuum Video, I go over different ways in which you can set up the vacuum pump, hoses, manifold gauge set, valve core removal tools in order to pull a vacuum down to 500 microns effectively while being able to isolate the micron gauge. I go over each and how if you are using the valve core removal tools, you should pressurize the system with refrigerant first before replacing the valve cores.
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