VacuFlush Toilet Service
Dometic
A VacuFlush head that will not hold vacuum, flushes weakly, or lets odor back into the cabin is one of the most common calls in marine service, and one of the most miserable problems to live with on a boat.
Precision Marine services Dometic VacuFlush systems throughout Chicago and the greater Chicagoland area, at your slip or on the hard.
Common VacuFlush problems
The vacuum pump keeps running. A VacuFlush system holds vacuum between flushes. When the pump cycles repeatedly or will not shut off, the system is losing vacuum somewhere, usually the bowl seal, the duckbill valves, or a leak in the vacuum line.
Weak or incomplete flush. Low vacuum, partially blocked lines, or worn duckbill valves reduce the pull that makes the system work.
Odor in the cabin. Odor usually means a failed seal, a saturated vent filter, or a permeated discharge hose. Hoses absorb odor over years and eventually have to be replaced.
The system will not flush at all. A dead vacuum pump, a tripped breaker, a failed switch, or a blockage between the bowl and the holding tank.
Water in the bowl drains away. A bowl that will not hold water points to the ball seal or the flush ball mechanism.
What service covers
Diagnosis of vacuum loss across the whole system rather than one component. Vacuum generator and pump service and replacement. Duckbill valve replacement, the most common wear item in a VacuFlush system. Bowl seal, ball seal, and flush ball service. Vacuum and discharge line inspection, clearing, and replacement. Vent filter and holding tank venting. Electrical faults including switches, breakers, and pump wiring.
Why VacuFlush systems fail
VacuFlush is a vacuum system rather than a pressure system, which makes it efficient with water compared to a macerating head. The tradeoff is that it depends entirely on a sealed vacuum circuit. Every seal, valve, and hose connection is a place vacuum can escape, and the symptoms of a small leak look a great deal like the symptoms of a failing pump.
That is why replacing parts without diagnosing first tends to be expensive and ineffective. A pump that runs constantly is usually a healthy pump doing its job against a leak somewhere else.
FAQ
Why does my VacuFlush pump keep running?
The system is losing vacuum. Common causes are worn duckbill valves, a failed bowl or ball seal, or a leak in the vacuum line. The pump is responding correctly to a leak elsewhere.
How often do duckbill valves need replacing?
They are a wear item. How quickly they go depends on use and water conditions, and they are one of the first things to check when vacuum performance drops.
Can a VacuFlush toilet be repaired, or does it need replacing?
Most problems are seals, valves, or hoses rather than the toilet itself. Complete replacement is rarely the first answer.
Do you come to the boat?
Yes. Precision Marine is a mobile service working at your slip or dockside across Chicago and Chicagoland.
What causes the smell even after service?
Permeated discharge hose. Hoses absorb odor over years and no amount of cleaning fixes it. The hose has to be replaced.