I just commissioned my 2004 C36MKII. As part of normal process, I flushed out all three water tanks from anti-freeze, a couple of partial rinses, a weak bleach solution and let sit for three hours, full drain, a few more partial rinses and then filled with clean water. I opened bow tank supply valve and kept two aft tank valves closed.
Nnext day I noticed a wood panel under aft berth was raised. I removed panel and a starboard aft tank had "swelled" and was about 2 inches higher than normal. Looked like it could have burst almost.
I opened the valve from aft starboard tank to the water supply pump and tank returned to normal after running a few gallons down drain.
So I'd appreciate any help on these questions.
- Don't all three water tanks have breather vents? If not, we would get a suction when tyring to use tank, right?
- How could pressure have been created in tank? I just filled with clean water and then screwed in the deck fill cover.
2004 C-36 MKII #2199
Tall Rig, Wing Keel, M-35B
S/V Valkyrie - Sail Great Lakes