Jabsco Electric Flush Switch - How does it work?

sprocker

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Can anyone explain what each of the switch positions on the Jabsco switch panel below do please? I cant find any manuals online and ours doesn't seem to be working as I would expect.

Jabsco.JPG
 
Just looking at the symbols, I assume the bottom left pumps water in, bottom right sucks it out, and the top one does both at once.

Pete
 
That is what I assume also Pete. It looks like there may be a problem with the wiring, I'll strip it down and check at the weekend.
 
We have the same setup.
Bottom switch is as stated above, but the top one cycles between pumping water in then switching over to macerate out, it doesn't do both at the same time.
At a guess it's something likes 4-5 seconds on each cycle. I've absolutely no idea how it works, assume there's a timer circuit somewhere in the system.
 
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