quick A/C question

shawpdx1

Registered User
wich is the HIgh and wich line is the low? I have one with a "P" on the cap towards the fire wall and the one up front has nothing and u fill on the High side correct
 
Personally I would take it in and have them evac the system then have them fill it...Its not that expensive and seems to work better for me at least...
 
LP Connection

Port nearest the firewall is the LP port and that that's the one you charge to w/ compressor running. Charge to the HP port and you're asking for a bad day because you can over pressurize the can and then have it explode. Always charge gas to the system (top of the can up). Charging liquid (can upside down) can damage the compressor suction valves. There are exceptions, if you are using blended refrigerants (like Hot Shot or Freeze-12) then you carefully and slowly charge as liquid to maintain the proper ratio of the blend. HP & LP ports are different sizes so hooking up to the wrong port shouldn't be a problem. HP port is for pressure readings and system evacuation
 
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