Slowmo
Senior Member
- Joined
- Oct 19, 2018
- Messages
- 453
- Location
- United States
- Vessel Name
- Esprit
- Vessel Make
- 40' Tollycraft tricabin diesel
Our boat has a pair of the older Mansfield Vacuflush heads. This is a 'component' system with separate vacuum accumulators and pumps for each head. The aft head works well, the pump cycles for about 20-30 seconds after flushing. The forward head is where my issue is. The pump (T12) always cycles longer, about 60 seconds, and sometimes (1/20 times) it won't shut off at all until I turn the breaker off. If do that and then turn the breaker back on after an hour or so, it is fine, i.e. doesn't start pumping again. If I turn the breaker on right away, it just starts pumping again. Also, when it's stuck pumping it really sounds like it is straining against the vacuum after a while. The system seems to hold vacuum, I left it a month turned off and it still had enough vacuum to flush without the pump being turned on.
I thought of the duckbill valves but why would it hold a vacuum if they were leaking? I also wondered about the pressure switch but wonder why it would work sometimes and not others.
Any others have this experience?
I thought of the duckbill valves but why would it hold a vacuum if they were leaking? I also wondered about the pressure switch but wonder why it would work sometimes and not others.
Any others have this experience?