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jpwhite · 10-22-2020, 01:19 PM

I'll chime in.. from Michigan.

I dump and flush all the tanks and the drain pipe.

I drain the hot water tank, turn off the exterior electric switch and put it in by pass mode.

My preference is to run antifreeze through all the water lines, including toilet, shower and washer and dryer hookups. The Montana has an freeze guard inlet that makes this convenient. It does need a good hose connection to get the pump to pull the antifreeze out of the jug.

I blow all the antifreeze out from every line. I hook the compressor up to the city inlet. I set the pressure regulator to between 40 and 50 psi. I have both a 110 VAC 150 PSI Porter Cable compressor and a 12 volt 150 psi ViAir 400P-RV compressor. The 110 unit has an outlet pressure regulator, I added a separate in line pressure regulator for 12 volt. As configured, both work fine.

I put another gallon down the drains to protect the drain lines and tanks.

If I don't have the time, such as returning too early from the south, I just blow the lines out using my ViAir.

10-22-2020, 01:19 PM	#58
jpwhite Junior Member Join Date: Jan 2019 Location: Troy Posts: 4	I'll chime in.. from Michigan. I dump and flush all the tanks and the drain pipe. I drain the hot water tank, turn off the exterior electric switch and put it in by pass mode. My preference is to run antifreeze through all the water lines, including toilet, shower and washer and dryer hookups. The Montana has an freeze guard inlet that makes this convenient. It does need a good hose connection to get the pump to pull the antifreeze out of the jug. I blow all the antifreeze out from every line. I hook the compressor up to the city inlet. I set the pressure regulator to between 40 and 50 psi. I have both a 110 VAC 150 PSI Porter Cable compressor and a 12 volt 150 psi ViAir 400P-RV compressor. The 110 unit has an outlet pressure regulator, I added a separate in line pressure regulator for 12 volt. As configured, both work fine. I put another gallon down the drains to protect the drain lines and tanks. If I don't have the time, such as returning too early from the south, I just blow the lines out using my ViAir.