Re: UPDATE: SHURflo Macerator Pumps 3200 series
Received my information also from SHURflo, and you may be right, and I could be wrong, the more I read it I kind of believe you, but the last E-mail I received states it does not suck the contents, also when I had this problem with the pump, the Service Tech, said it had to be gravity feed to the pump.
Following Info is what I received from SHURflo folks:
Ron, even though the SHURflo macerator is listed as self priming, the Roadtrek system is such that it is gravity feed, and even if the pump inlet were level with the tank outlet head pressure would force the liquid and solids to the pump. As soon as the valve is opened between the grey tank or black tank product runs to the pump until it is turned on at which time it is ground up and disposed of.
The pump is listed as a self priming pump, but as I stated Roadtreks system has the pump at the same level or lower than the tank which in effect gives it a gravity feed.
This pump primes up to 5 FT when it is wet, although, we prefer if the pump is mounted below or at the same level as the gray tank, so the waste comes by gravity. If the pump is 5 ft above the tank, you will need to make sure the pump is wet inside before you run it, otherwise the impeller will get damage if it runs more that 20 seconds dry.
The Macerator pump will not "suck" the contents from the black holding tank. It needs to be mounted below the holding tank as it needs gravity flow.
Ron & Rose Cabral
New Bedford, MA
FMCA:303873 ~K1RRC~ RRRCRT@aol.com