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Old 04-26-2010, 01:09 AM   #1
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well pump keeps triping breaker


well pump keeps tripping breaker I believe it a franklin 3/4 hp 230v pump with a control box. control box buzzes then breaker trips within 5 secs. I took some ohms readings with pump disconected from box blk - yel= 1.6 ohms red - yel 11.5 ohms red- blk = 10 ohms. black- ground= 2 ohms red-grd= 11.7 ohms yel-grd=2.4 ohms I would appreciate any input

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Old 04-26-2010, 01:25 AM   #2
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well pump keeps triping breaker


you may need an amprobe to determine if the motor is locked up. can you access any part of the motor to see if it spins by hand? the pump itself may be seized preventing the motor from starting.
also could have a start capacitor in the control box thats bad,(round black plastic thing with 2 wires)

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Old 04-26-2010, 01:42 AM   #3
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well pump keeps triping breaker


I do have an amprobe dont no how to tell if its locked. I checked the ohms on the capacitor and it seemed to be good. pump was working fine all day then just tripped the pump is still at bottom of the well so cant get to it
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Old 04-26-2010, 01:58 AM   #4
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well pump keeps triping breaker


put amprobe around one of the supply voltage wires feeding the pump set it on whatever scale exceeds the rating of the breaker like 0-50 amps apply power if the amp draw exceeds the breakers rating than you know the motor/pump is the problem.Whats located inside the control box you mentioned?
really need a analog ohmeter with a1000k scale to read a cap it will peg the meter than gradually drop some newer meters have a mfd scale and it will actually give you the mfd rating of the cap

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Old 04-26-2010, 02:13 AM   #5
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well pump keeps triping breaker


In the box is a blue start relay and the capacitor i think the start relay is what is buzzing Iam gonna pick up a analog meter in morning i only have digital
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Old 04-26-2010, 02:17 AM   #6
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well pump keeps triping breaker


you might as well buy a new cap it may be cheaper we are speaking of a start cap correct? black,round,plastic? not oval and metal(run cap)
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Old 04-26-2010, 10:26 AM   #7
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well pump keeps triping breaker


Use this to troubleshoot before you start replacing parts.

http://www.franklin-electric.com/bus...M/page-13.aspx

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