SV Shadow came with a Norcold SCQT-6406 refrigeration unit for the icebox.
I don't know if this was standard equipment on the 85's, but I'm grateful to have it.
My problem of course is I don't have a clue how to recharge it.
To start, the original refrigerant was R-12. R-12 is no longer made and has been replaced with R-134A.
I bought a can of R-134A and a delivery hose and attached it to the suction valve on the copper piping, but It didn't seem to work.
I opened the valve for 5 seconds, turned it off and waited 5 minutes to see if the icebox's cold plate got cold. It did not.
I repeated this procedure a number of times but no change. In fact, the can of refrigerant seemed pretty full when I finally gave up.
My current thinking is that I have to purge the system of it's existing refrigerant before I can charge it, but I really don't know.
Attached are photos of the unit and it's valves.
Any advise will be appreciated. TIA
I don't know if this was standard equipment on the 85's, but I'm grateful to have it.
My problem of course is I don't have a clue how to recharge it.
To start, the original refrigerant was R-12. R-12 is no longer made and has been replaced with R-134A.
I bought a can of R-134A and a delivery hose and attached it to the suction valve on the copper piping, but It didn't seem to work.
I opened the valve for 5 seconds, turned it off and waited 5 minutes to see if the icebox's cold plate got cold. It did not.
I repeated this procedure a number of times but no change. In fact, the can of refrigerant seemed pretty full when I finally gave up.
My current thinking is that I have to purge the system of it's existing refrigerant before I can charge it, but I really don't know.
Attached are photos of the unit and it's valves.
Any advise will be appreciated. TIA
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