Posts: 1,696
Threads: 123
Joined: Aug 2012
If I understood my A/C service man correctly ports can be added if the system needs to be opened up for repairs.
1993 Newell (316) 45' 8V92,towing an Imperial open trailer or RnR custom built enclosed trailer. FMCA#232958 '67 Airstream Overlander 27' '67GTO,'76TransAm,'52Chevy panel, 2000 Corvette "Lingenfelter"modified, '23 Grand Cherokee.
Posts: 910
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External ports were added on my A/Cs. Make sure to paint one red and one blue.
Chappell and Mary
2004 Foretravel 36 foot
Posts: 5,412
Threads: 255
Joined: Jul 2012
Yes to both Dean and Chappell. Ports on a SCS unit is a pretty good indicator that it has been worked on. Adding ports is the only way to break into the system to replace a compressor. The red and blue is to indicate high and low side for hooking up to the gauges. Since you can't see into the unit like a typical setup, it's a great practice to ID the ports. Red is high, blue is low.
Richard and Rhonda Entrekin
99 Newell, 512
Maverick Hybrid Toad
Inverness, FL (when we're home
)
