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Saniflow system motor pump sometimes not work

The motor only goes round if i give it a little push with pipe when the water is at fill level

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The pump is either bound up with lots of friction. ( Check with the motor off if the pump is easy to turn by hand, not with a lever. If you can turn it at all by hand it is not bound up.

The the problem is electrical. If this is a 220V pump, check to see that both circuit braeakers are ok. If so, call a service man familiar with the pump to further check the starter if equipped and the motor.

Good luck

Posted on Mar 19, 2009


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Hi Neil,
The pump is activated by a pressure switch inside the unit and would not normally make any noise, so probably can rule that one out!

From the manual on the saniflo it would suggest either a foreign object in the unit, a defective motor or control unit. It may be that you are unlucky and have a loose macerator blade that needs to be tightened (and loctite applied).

I would double check that the clunking is definitely coming from inside the unit and not a pipe or something else moving (the water pushing the 90 degree rubber discharge tends to move and can create movement around it). When you are sure, it will be the not so nice job of opening up the unit:

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If it is the macerator blade it should be clear that it is loose and could be tightened up. It could be play in the motor which unfortunately would mean a new unit - to test, gently pull up on macerator blade and feel for movement vertically.

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While it is out you may as well clean it out - I normally do this outside by putting warm bleached water into the unit for around 30mins, swishing it about and then emptying down a drain (cover up the mains cables in a plastic food bag first!). I also sometimes use a hose pipe to really get into all of the nooks.

Good luck with the fix, if this helps pls leave feedback, if not let me know and I'll try and help some more


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