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Author Topic:   Electrical Troubleshooting of Pumps
nats posted 08-01-2011 09:18 PM ET (US)   Profile for nats   Send Email to nats  
[An electrical pump used to remove water from a boat] stopped working this weekend. [The electrical pump] does not work [when the panel switch that controls it is placed in either the] auto or manual [position]. [Is there any way] of checking out [an electrical pump that does not operate?]. You guys are always helpful. Stan
contender posted 08-01-2011 09:27 PM ET (US)     Profile for contender  Send Email to contender     
Do you have a tester to check if the pump is getting juice?( no tester get a 12 volt light bulb or something that runs on 12 volts to test the wires at the pump) If it is then the pump is bad, no juice, bad wire, loose connection, bad switch. Just will take you a little time to check/chase down everything....good luck
number9 posted 08-02-2011 10:35 AM ET (US)     Profile for number9  Send Email to number9     
Stan--If it doesn't drain remove the plug.
Tom Hemphill posted 08-02-2011 06:05 PM ET (US)     Profile for Tom Hemphill  Send Email to Tom Hemphill     
You bilge pump may have choked on trash it tried to suck up. Monofilament fishing line is a frequent offender, as are little pebbles. It shouldn't be difficult to disassemble the bilge pump enough to remove the blockage.
jimh posted 08-03-2011 11:00 PM ET (US)     Profile for jimh  Send Email to jimh     
Apply power to the electrical pump. Check for rotation of the electrical motor.
L H G posted 08-04-2011 05:49 PM ET (US)     Profile for L H G    
When a bilge pump stops working, the first thing you do is check the fuse. The second thing you do is lift the pump out of [its] base to see if it is clogged or jammed. You can also see if the impeller will turn by hand. If the above are both good, then you have to look for failed or corroded wire connections, or nicked wire. If they are good, you need a new pump. In about 95% of cases, [the wiring or the pump is the cause of] the problem.
jimh posted 08-06-2011 11:16 PM ET (US)     Profile for jimh  Send Email to jimh     
When any electrical device stops working, a good initial investigation is to check the power in the branch circuit that provides the current to the device.

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