last year i bought an old boat with 2 heads.1 is a direct discharge
type that we always used (perfectly legal where we hang out). the
other head is a vacuflush which i decided to figure out how it all
worked. first problem i dicovered is that none of the lights on the
tank tender panel lit up even though there is 13.4v at the back of the
panel. what could be the cause since at least one of the lights should
be lit?
i flushed a few clean bowlfulls of water into the holding tank. good
vaccuum.i turned on the discharge pump which pumped convincingly but
just bubbles came out the through hull.i decided to give the holding
tank a good rince out by filling the tank through the deck discharge
port.i was quite surprised to discover that the holding tank was
completely full already! (that explained a list that had been
troubling me) we have not used this toilet so heaven only knows how
long said contents have been solidifying in the holding tank. i
proceded to replace the duck bill valves in the discharge pump and
inspect for cloggage and loose hose clamps. put the whole thing back
togeher. the pump thumps convincingly but only passes gas which
bubbles out the exit orfice under the boat.now i can figure out that
the exit pipe from the holding tank may be clogged with petrified
copros but i am reluctant to disconnect the discharge hose from the
tank in case the petrified copros theory is incorrect.the nearest pump
out station is at least 4 hours away making it a whole days journey.
can anyone suggest anything that is both simple and foolproof that
might have escaped my novice brain? all advice will be greatly
appreciated, i look forward to being flush with sucess.