I've been using a macerator pump in my motorhomes since 2007. The only issue I've had is with hair (long) getting wrapped around the motor shaft not long after I installed the first one. One thing I have learned is to install the screen type hair traps in the shower and bathroom sinks. That prevents hair from making it into the gray tank and then the pump. I do replace the impeller and seals after about 3 years of use.
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Bob & Dian
2014 Fleetwood Discovery 40E, Freightliner XCM, Cummins ISL 9 380hp uprated to 450hp, 1998 Jeep TJ
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