pump trouble

[Mike T]

New guy here, trying to figure this out. 1hp 3wire pump at 300 ft, going into a holding tank. Yellow and blk wires show 8.5- 9 amps and good voltage . red jumps up to 3-4 amps then dies but still shows 220 v. Am I right that it shows pump is running under pressure ? Do I have a split line ? thanks for any advice

 

[Reach4]

New guy here, trying to figure this out. 1hp 3wire pump at 300 ft, going into a holding tank. Yellow and blk wires show 8.5- 9 amps and good voltage . red jumps up to 3-4 amps then dies but still shows 220 v.

Sounds about right. Red current lasts what -- maybe 5 seconds?

Am I right that it shows pump is running under pressure ?

What does that mean? Does water come out?

 

[Sponsor]

 

[Mike T]

No water. Red wire is just a flash, straight up and down. Also the 9 amps on the y and B wires doesn't go higher and then drop back to 9 amps

 

[Valveman]

9 amps is full load for a 1HP, which means the pump should be producing max flow rate. Water is going somewhere.

 

[Reach4]

The snip below is from the Franklin AIM manual for a 1 HP motor. With your symptom of no water and current flowing in the red wire for only 300 milliseconds, I cannot explain your symptoms. Usually the current in the red line would flow for a few seconds before the control box senses it is time to stop providing the current through the start capacitor. If the motor did not start, I would expect the current flow to be bigger followed by a thermal cutout or breaker popping.

 

[Mike T]

I'm thinking the impellers have been eat up. Been seeing some white looking stuff floating in tank. Didn't know what it was. Does that make sense ?

 

[Mike T]

Thanks guys, going to bit the bullet and get a pump guy out.

 

[Valveman]

Yeah that white stuff could be impellers. And if the pump is trashed it could be pulling max amps and still not pumping any water.

 

[Craigpump]

Could be impellors, but why?
Lots of grit?
Dry well?
Pump is just well worn?

If the pump is wiped out and hasn't shut off, your electric bill will be much higher than normal

 

[Mike T]

turned out to be a split in the poly.