Question about Saniflo SaniGrind Macerator Pump Tank

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My marine macerator pump stopped working altogether. What checks need to be performed?

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First check if the pump get power. I presume your pump is 12V DC. If you have a dc tong tester that is one way.Or disconnect the motor and reconnect directly to a battery. Then a more crude way to test is to take one lead off and touch it together again. If your pump is stuck but the motor is still o.k. you will get a reasonable spark. No spark: your motor brushes are worn out or your motor is toast. You have a spark your pump is stuck with debris. Try to run it reverse(reverse the power leads) and or clean it out. You can see the cutter knifes from the intake end and should be able to turn them with a screw driver. New pumps on ebay: I paid $125

Posted on Jul 30, 2010

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Hi, these pumps do need periodic maintenance. If you are confident take the top off and clean all the slush out from the inside. If this dosn't work unfortunately you will need it professionally serviced. Its a good idea with these, to flush them through with clean water once every month.

Posted on Jul 29, 2010


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1 Answer

Water keeps flowing back into the macerator

There should be a check valve installed in the discharge elbow, check if the check valve is installed or it might just be stuck open so when waste water is pumped out, it slowly drains back into the unit creating water pressure that is making it kick on and off.

Oct 07, 2012 | Saniflo & Saniplus& Macerator Pump

1 Answer

Whining noise after the flush is filled and the noise keeps on but if the macerator is given a gentle kick the noise stops! Do I need a new Macerator?

sounds like there could be a blockage inside which is effecting the pump or the float switch look on the saniflo website for instructions how to clean etc or phone there tec department

Dec 09, 2010 | Saniflo SaniPlus-Round SaniPlus Macerator...

1 Answer

Mariner 2 hp outboard engine (1985) not pumping water

My Mariner 8 has a thermostat fitted. It only pumps water when it heats to normal temp.

If your engine stops, it may be a fuel problem. Check the plug and go to Marine Doctor (a) fuel diagnostics, (b) spark plug diagnostics, sections. PK

Jul 26, 2010 | Boating

1 Answer

Pump wont stop

The following are the possible problems and solutions:
  1. The tank flapper (Flush Valve) leaking allowing water into bowl. Make sure flapper is fully seated. If flapper is fully seated and still is leaking replace flapper.
  2. Faulty Non-Return Check Valve, water leaking back into Macerator. Clean and Inspect check valve replace if after clean water still flows back into Macerator.
  3. Check micro switch, the micro switch turns on pump when the water level reaches to a determined level. Location of switch is in the pressure chamber. Check to see if switch is sticking. Note: For safety Macerator should never be operated with lid open
I hope this answers your question and gives you a few more places to look. Please rate the answer on it's helpfulness. Good Luck and have a great day. Jeff

Mar 27, 2010 | Saniflo & Saniplus& Macerator Pump

2 Answers

Saniflo stopped working altogether


It sounds like it has possibly failed. Which fuse did you check .. the fused spur from the consumer unit?

i.e. can you confirm that the unit has power to it?

How old is the unit? , has anything gone down there that shouldn't (toy soldiers, wipes ...)?

It may be worth giving it a clean internally. It could be that the pressure switch is gunked up and no longer working, or that the motor has gone.

If this helps please leave feedback

Feb 08, 2010 | Saniflo 002/005/007 Saniplus Toilet with...

2 Answers

My saniflo pump has stop working, what can be wrong

Have you got power to the pump? .. if it is on a fused spur, check that there is power (i.e. check the mains switch board)

Jan 17, 2010 | Saniflo 002/005/007 Saniplus Toilet with...

1 Answer

Pumping stopped

Well it sound likes you have 2 problems. 1st is the float switch is set to high,and pump wont come on till it raises higher then tray. 2nd. sounds like empeller came lose from shaft. I hope this help. :)

Jul 05, 2009 | Saniflo & Saniplus& Macerator Pump

1 Answer

My macerator turns off and stops working for 10 - 15 minutes

the macerator is over heating.check the maintenance opening and clean it ,but you may need a more powerful macerator,some are made only for flushing systems (as in toilets) a pro-longed use may be making it overheat.. good luck

Jul 02, 2009 | Saniflo & Saniplus& Macerator Pump

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