JohnM20 replied on 08/07/2019 07:32
Posted on 08/07/2019 07:32
My 2015 Lunar 524 has a Dometic toilet, CTW 4050 which has developed a problem. After I have filled the flush water tank to maximum and then flushed the toilet for the first time, even though the pump has stopped running water continues to constantly run into the bowl, probably due to siphonic action. This continues until the flush water tank is an estimated half full but by this time the bowl is almost full. Has anyone else had this problem or can offer any meaningful advice as to cause and rectification?
My additional concerns are that the bowl could overflow if we were not aware of it filling up and also that, if the waste cassette is getting ready for emptying there is nowhere for this excess water to be drained to. I have noticed black 'bits' in the flush water (although this is nothing new) and wondered if a 'bit' has stopped a valve from closing properly (I don't know if there is such a valve).
I must add that as a toilet I much prefer the Thetford made models that I have had in previous caravans. The blade operation on my Dometic is nowhere near as good as Thetford and although very regularly treated with silicone spray / grease it very quickly becomes difficult to operate the blade slide. The slide is thoroughly cleaned every two or three cassette emptyings. The handbook recommends this treatment once or twice a year if the toilet is used frequently.
I hope someone can come up with a solution as we will be going away again soon.
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JohnM20
Caravanner from Derbyshire