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Old 10-24-2013, 02:01 PM   #21
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Join Date: May 2013
Location: St. Charles, MO
Posts: 193
Two options I use:
1. 2.5 gallon shop vac which has both suction and discharge fittings. I drain all the drops then open each valve separately and suck the line dry. When each is cleared I put in the drain plugs for sinks, bath etc. Disconnect the water pump discharge and blow with the vac discharge. If there is no water in any of the basins then the unit is good. Suck the traps dry and pour in a little pink.
2. Drain and blow out the lines with the vac. Remove the inlet to the water pump and connect to a spare inlet fitting with about 2 feet of tubing. Put tubing in pink jug and run each faucet individually until pink comes out. This will take care of the emptied traps.
This assumes you have drained and isolated the water heater.

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Old 10-24-2013, 02:33 PM   #22
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Join Date: Mar 2013
Location: Southeastern MA
Posts: 433
To the OP - I can repeat the advice above, as I have that exact same compressor. One of the smaller ones that you get for air guns would do fine (3-5 gallon range)

In my case, I pumped the 20gal up to 140psi, unplugged it so I could wheel it out to the camper, and when I was all done blowing out the lines I still had 90psi left (I had the pressure regulator on the hose set to 30psi sustained)

As I'm a bit paranoid about freezing, I still put antifreeze in the lines.

Tom F.
2013 GMC 2500HD SLT Crew Cab
2013 Rockwood Roo 23SS
Nights camped in 2014: 8
Nights camped in 2013: 30
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