Weird One

[Penguin45]

Went to a little baby Bendix a/w last week, problem, progressive overfilling. Got totally baffled by it and pulled it in. Put it on test in the workshop and of course it worked perfectly. So – no pressure leak, p/sw fine, timed fill in rinse OK, so what was going on?

Thinking laterally, it came down to the installation. The machine is normally fitted in a narrow boat, in a housing 18″ off the floor. The boat’s fresh water tanks are at floor level, and all flow functions (loo, shower, taps and washing machine) are handled by a pump and pressure drop switch.

A washing machine valve is held shut by the positive pressure of the incoming water. In this set-up, there is no positive pressure once the booster pump is cut off. Result, valve open, pressure drop, pump on, intermittent fill!

Don’t know what we’re going to do about it though…………..

Any thoughts anyone?

Penguin.

[Dave_Conway]

Re: Weird One

Penguin45 wrote:Any thoughts anyone?

How about an external valve as well connected in parallel to the internal inlet valve ?

These at RS components seem to have zero head pressure capability:

http://tinyurl.com/3cm4k

Dave.

[Penguin45]

Nice one Dave, but a bit pricey. I think we’ve solved it with that low pressure inlet valve that Hotpoint supply for the top loaders (151515?).

Anyway, it seems to work and the bilge pump is on a float switch……………. Wonder if I’m insured?

Penguin.

[Author]

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