Winterize class a with on board air compressor
Have class a, first time to winterize trying to decide air or antifreeze . Have on board compressor but do not want to put to much pressure in lines. Any thoughts or ideas are appreciated. Jim
Forum Discussion
I use a small portable compressor I got from Harbor Freight. It has a regulator on the output that I can set as low as 5 psi if I need to.
Since water from CG systems is often supplied at 60 psi or more, I use about 35 psi for winterising, so I know I'm not going to blow anything apart. Our MH doesn't have a dishwasher (other than me) and no clothes washer (other than an en-route laundromat).
After draining the water heater and shutting it off with the by-pass valve, I put the compressor onto the water fill port with an adapter that connects a Schrader tire valve to a water hose. With the compressor's outlet pressure at about 30 psi into the water system, I then go around and open the faucets, including the outside shower and the toilet, and let the air blow through. Once it's done, I put the "pink stuff" into the P-traps and I'm done. I figure the small amount of water (maybe two pints) going into the 40-gallon waste tank can freeze without causing any damage.
We rarely get winter days around here where the daytime high temp stays below freezing and the overnight lows are in the mid-20's for just a few days in a row. Thank goodness we aren't in a place where overnight lows are closer to minus 20! We ex-pat British wimps couldn't handle that!
Since water from CG systems is often supplied at 60 psi or more, I use about 35 psi for winterising, so I know I'm not going to blow anything apart. Our MH doesn't have a dishwasher (other than me) and no clothes washer (other than an en-route laundromat).
After draining the water heater and shutting it off with the by-pass valve, I put the compressor onto the water fill port with an adapter that connects a Schrader tire valve to a water hose. With the compressor's outlet pressure at about 30 psi into the water system, I then go around and open the faucets, including the outside shower and the toilet, and let the air blow through. Once it's done, I put the "pink stuff" into the P-traps and I'm done. I figure the small amount of water (maybe two pints) going into the 40-gallon waste tank can freeze without causing any damage.
We rarely get winter days around here where the daytime high temp stays below freezing and the overnight lows are in the mid-20's for just a few days in a row. Thank goodness we aren't in a place where overnight lows are closer to minus 20! We ex-pat British wimps couldn't handle that!
