Oh oh, did I screw up?

[ibrick]

Just started to winterize my Bighorn and decided that this year I would blow out the water lines with 40 psi air before adding the antifreeze.

The problem is I mistakenly attached the air pressure to the black tank rinse inlet for about 1 minute. I heard bubbling and I think the sound of the tank expanding. Once I realized my mistake I ran back to the systems/hookup panel to disconnect the supply air, I smelled waste. I went into the bathroom to check the condition of the toilet and surrounding area and all looked well but when I pressed the foot lever and opened the bowl flap, air rushed "into" the tank.

Please tell me the black is vented and I didn't blow any thing up or off.

Thanks,
Rick

 

[branson4020]

Yes, the tank is vented.

 

[lwmcguir]

Interesting that air rushed into the tank. You created a vacumn but I don't see how.

 

[ibrick]

Yeah it puzzled me too, that's why I ask. I went to the toilet bowl and saw water sitting above the seal. I cracked the seal just a bit as I didn't want to wear that water or what was waiting behind that seal as I opened it. Just as it barely opened the water in the bowl was vacuumed quickly into the tank.
Weird

 

[jmgratz]

Sounds to me like you made the tank 'burp' just like it does when it is full.

 

[ibrick]

Must be it Jim, I got nothing. But I will do a full rinse and drain in the morning to make sure everything still operates correctly. This is one area that I don't want a surprise from next spring on our first outing.

 

[bighorn3370]

I blow out my black tank line every year. I also have the valve closed. Yes, all of your tanks are vented. If you got a vacuum, your vent may be blocked. I think you may have heard the spinners moving; without water, they sound a bit different. Ernie