Weil pump

targetman

Anyone ever worked on a Weil 4100? I'm dealing with one and it's the only one I have ever seen.

icesailor

?

What's wrong with it?

targetman

won't shut off

First off it's a duplex pump, but only one pump is piped and being used. This is not my account so I don't know the normal operation of this pump. I was sent today to change the motor and seal. This is no Watchman. The impeller looks more like a sprocket. It's flat and about a 1/4" thick. The seal is a lip seal. The replacement motor was 1/2 hp and the original was 1/4. After the repairs were made, I placed it back in service. First thing I notice is how loud it operates. The janitor said he thought it was always loud. The tank was full of condensate so I wanted to see it cycle. I had yet to turn the steam back on so I did't think it would take that long. After about 10 minutes it was still pumping. I broke a union to verify. Pulled the motor and pump also. It was about two thirds full. Turned the heat back on and left for my dentist appointment. Got a call an hour and a half later. The still had not cycled off. Need some ideas for tomorrow.

Pumpguy

It's a turbine pump....

not a centrifugal.  Turbine pumps are positive displacement pumps usually used for low flow, high head applications.  They are very sensitive to wear, not like a centrifugal.  I would check the condition of the impeller and cases.  If they are worn, the impeller will spin but not pump.  I would also check to see if there is a clogged strainer at the impeller's inlet.  If it were me, I would consider a conversion centrifugal type pump kit to fit this receiver, or a whole new centrifugal type condensate pump set with tank and float switch.



Centrifugal type pumps can take a lot of wear and still pump.