Oasis flush

[Richpatty]

Totally agree…. But we will own the RV 9 years this month, so it maybe time.

 

[Texas Clodhopper]

I am in the process of replacing the Oasis DM12 module. What a project that has turned into. I think I have everything tightened up, so I'll do the transfer fluid tomorrow. I will start by blowing any remaining transfer fluid and or water out of the system before adding the transfer fluid.

 

[Richpatty]

OK! I completed the Oasis flush today. Took several hours, mostly in getting pieces of hose to fit my pump. I should have spare RV hose around, but I don't. Add it to the list.
I had called ITR (they answered my call! ) and they said that I could just use a pump to pull the fluid out and then push new fluid back in. That did work well, but I did have to disconnect both heater lines (one at a time) and push some low pressure air through to get out several more gallons of fluid. The fluid was a nasty color of brown... I also found that my bucket that I pumping the fluid into had a small hole {sigh}so hopefully it wont kill the grass (weeds).

Once that was done, I then could reconnect everything, reverse the pump hoses and push new fluid back in. That part went quick.

As you can see on the NE-S, everything is right at the door, so I do not have to crawl into the basement to get there.

Anyway, I don't see any leaks, which was one of my concerns and I was able to run it with all three pumps running and it got everything hot. It took 18 gallons, although I probably went about gallon too high as the overflow tank dropped a bunch on the ground. Oh well. The NE-S takes about 14 gallons, so the other three were the heating lines. I have two gallons left, which I will keep as spare.

Glad that's done. Not sure I would want to do it again, but I did learn a bunch in the process.

 

[Texas Clodhopper]

@Richpatty I used a section of clear hose on the outlet side to verify I didn't have any air left in the system. Brian told me to run the summer loop pump after my initial fill, and I could hear the pump cavitating several times. This took about 45 minutes before I stopped seeing bubbles and the pumps stopped cavitating.

 

[Richpatty]

@Richpatty I used a section of clear hose on the outlet side to verify I didn't have any air left in the system. Brian told me to run the summer loop pump after my initial fill, and I could hear the pump cavitating several times. This took about 45 minutes before I stopped seeing bubbles and the pumps stopped cavitating.

I did not see that problem… probably due to the different model of my system. When I filled up the unit, it also filled all of the lines and pumps…

I just pumped in the fluid and turned on the pump override which ran all three pumps and it pushed out any remaining bubbles.