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Old 07-05-2012, 03:47 PM   #1
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macerator pump stopping

I have a 2006 Windsor. When dumping the tanks my macerator pump stops working after a few minutes, I wait a minute or so and it works again; but continues to stop after a while and 'resets'. Is there a circuit breaker for this unit, or does the pump itself have a built in breaker?
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Old 07-05-2012, 04:13 PM   #2
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Sounds like it is overheating and the thermal switch is shutting it off. It is cooled by the waste so are the valves open/working?
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Old 07-06-2012, 06:39 AM   #3
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I have a pair of hemostats that I use after each dump to remove hair that the pump refuses to chew up (not too bad a job after rinsed out by gray water )

Have you ever cleaned out hair from the blades ?
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Old 07-06-2012, 09:02 AM   #4
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Using it in the cool of the morning may help.

Ed
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Old 07-06-2012, 10:14 AM   #5
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The pump has stopped working completely now. When I hit the switch I can hear a very low sound, like a click, then complete silence. If I hit the switch again real quick, no sound, I wait 20-30 seconds, hit the switch and get the click sound. I am in the process of taking the hoses off the pump to see if it's clogged, I expect a big mess when doing this.
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Old 07-06-2012, 01:12 PM   #6
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jrnacc......It's probably clogged and needs repair. I just rebuilt mine after running for 7 years. You can buy a kit for it online. Once it's out of the coach, it's very easy to rebuild. The heart of the pump is a rubber impeller. The new kit comes with the impeller and gaskets. Once it's apart, you can also clean up the area where the metal blades chew up the waste.

Mine was still working when I rebuilt it. I rebuilt it as a preventative measure. It now pumps about 20% faster than before.
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Old 07-06-2012, 03:36 PM   #7
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Don and the OP, do your rigs have techma toilets too?

The system in our 08 knight works so well... I am convinced it is because anything solid down the toilet is ground up in the techma..... Long before it gets anywhere near the sanicon.
Nothing but liquid is ever in our black tank.
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Old 07-06-2012, 04:32 PM   #8
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There are several possible issues. but first, what caused it to stop and re-start.

A thermal circuit breaker in the motor, it protects the motor from over heat.

Why was it heating up...

Something is making it hard for the shaft to turn.

Now, what can do that?

Bearing failure
Hair or other hard to macerate stuff wrapping itself around the shaft and impellers.

And the impeller clearance.

Flush it with bleach water, (sanatize) and dissassemble, Have some extra pump housing gaskets (it takes two that I"m sure of, you should have 3 on hand) clean completly.

I had to double up on the impeller side gaskets on mine.
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Old 07-06-2012, 06:27 PM   #9
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Jim....I don't have the Tecma toilet and my SaniCon was still working well. Just like boat impellers, they should be changed every so often because they get a "set". The nerw impeller just helped the flow.
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Old 07-08-2012, 01:53 PM   #10
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Thanks to all for your input. It was a clog, obviously one that caused intermittant failure at first but finally stopped completely. All seems to be okay now (after several hours of unpleasant work). We had been hooked up to a sewer system for 3 months with 3" hose and got careless in what ended up in the black tank.
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