Trojan Boat Forum

How long should the vacuum pump run after a flush? I just replaced the duck bills and the vacuum switch and it seems like it cycles for about 30 seconds. I believe the pump has a set screw to help adjust this but I am not sure. Would appreciate your thoughts

I would have to check but I believe the spec is up to 90 seconds to complete an acceptable cycle. This may not apply to older vintages though. Don't know that there is an adjustment. Should just do it a quickly as possible...always a good thing while on the hook.

30 seconds sounds like a good cycle time. Mine will run up to a minute, I would imagine it depends on how long to hold the pedal down.

The cycle begins when you let go of the pedal and the bowl seals.

30-45 sec sounds right..... sometimes more, sometimes less. Don't know why. If both of my toilets are flushed same time, even longer.

Ron

Thank you! I thought it was supposed to be a little shorter but I guess it is running correctly. My issue was that the pump would not turn off. I replaced the switch on the end of the accumulator tank and all is good.

Another thing to watch out for is when someone flushes TP, sometimes (very rare) a small piece can lodge at the seal and cause a vacuum leak or at the least cause extra long vacuum time. When I notice extra long times I check the forward toilet because thats where female guests use it.
In this case I just quickly lower and raise the pedal a dozen times without letting it re-seal in between. Always clears it

Ron