The front head on our 43 has, after 6 years of perfect operation, begun filling with clean sea water after use; the only way to stop the inflow is to close the inlet seacock. I have replaced the joker valve, I feel fruitlessly as it is on the outlet side of the system.
Question: Is there a valve fitted on inlet side of the Jabsco 37010, as in the manual toilet, and/or do Beneteau fit an anti syphon or vented loop in their standard Oceanis toilet plumbing. I have had a reasonably good look and cannot find a fitted loop.
Thanks for your prompt suggestions.
Yes the Jabsco 37010 is the base model electric toilet.
Since posting I have examined the plumbing in closer detail and you are correct in saying there are no vented loops, simply short hose runs from the skin fitting to the pump.
I doubt if the holding tank has any influence as the flooding water is crystal clear sea water without any trace of even pipe scale or solids.
Do the US models have the large (40mm) vent in the topside which provides an aerobic atmosphere in the holding tank?.
I will check the hose attachment on the pump and if all else fails I will fit a vented loop and keep you posted
Great suggestions Mike!
If none of Mikes suggestions is successful I would disassemble waste line(s) from bowl to tank/overboard thru hull to check for blockage/buildup after ensuring the electric ops switch is working properly.
If line to Y valve, or, Y valve to tank line, or, Y valve to overboard through-hull line is blocked, the bowl will fill when flushed. You could try to isolate which individual line is blocked but if any line in system is blocked with sea water by-product buildup it might be a good idea to replace them all.
Thank you James.
I am really quite sure the trouble is in the in hose rather than the brown water out.
The latest theory here is the wear plate between the impellor and the housing may be worn causing loss of the seal which is the only mechanical joint keeping the sea water out.