Question about Flotec Pump FP4032-10MK
I just installed a new FP4032 shallow well jet pump for my sprinkler system. I pump from a lake with water level about 10ft below pump inlet level. I have a sprinkler system with 4 heads per zone. The pump runs fine and provides water, just not enough flow and/or pressure to pop up the sprinkler heads, they just bubble water in the ground. What is the likely cause, or what should I be looking for to correct this. My old pump was a 1 horse jet pump set up as a deep well pump, for no particular reason and was more than adequate to this job. The Flotec doesn't seem to be doing as well for the same size pump, inlet hose, etc. All plumbed the same but doesn't work. Thanks for any help or guidance. Don
Pressure in centrifugal pumps depends on the number of impellers in the pump housing, the clearance of the impellers to the housing and the power of the motor to drive the impeller/s
volume flow is also important as a pump without a high output will not produce pressure
check the jet size at the foot valve that is used to help lift water to the pump
It is a jet pump and will have a smaller line back to the foot valve for that purpose
next wil jet pumps if there is too much flow to the outlet , the pressure required to help lift the water to the pump is reduced and the volume is also reduced
you indicate 4 sprinkler heads per zone but how many zones are operating at one time
check the expected delivered volume for the new pump against delivered volume of the old pump as a starter to find the reason for the poor performance of the new pump
check also the rpms of each pump as that also has a bearing on volume produced
Posted on Mar 26, 2017
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Posted on Jan 02, 2017
The tank is an air tank, it works like a cushon and accumulator.
Have you reconnceted the pump? If not fill the pipe that goes to the well with water. It should not drain down, there should be a foot valve that prevents the water from running back into the well. So if the foot valve is working it should not take a lot of water to do this.
Pour water into the suction side of the pump until the pump is as full as you can get it, reconnect the pump and start it up. Yes it does need to be primed
Posted on Mar 17, 2009
Inspect the jet thru the suction pipe or the removable plug if the pipe isn't inline with the center of the impeller. The jet is very small, and easy to get something stuck in there. Then prime and leave the pressure pipe closest to the outlet slightly loose to let air out. Once you get good pressure you can tighten the pipe. Sometimes you have to prime more than once to get all the air out of the well pipe.
Posted on Apr 05, 2009
If heating up, the motor thermal switch is opening to shut down the motor; this is by design. During the brief run time does it pump at all? It sounds as if there may be mechanical issues on the pump itself and the motor (from the extra draw) is heating up and shutting down. I'd look in to the pump to see if anything had failed within it.
I hope this may have helped,
Posted on Sep 25, 2009
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