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View Full Version : Lake pump replace or rebuild?


BD79
07-31-2012, 05:44 PM
I was called out to start system for a new client. After searching for the breaker that controls the pump, I found that the whole house was rewired and the breaker was left out.

Replaced breaker but pump does not work. I checked for voltage and have 120 on both terminals. Is anything else I should check or is the motor just burned and should be replaced? Is it worth having it rebuilt? BTW it's a 2 1/2 hp Dayton.

Wet_Boots
07-31-2012, 07:13 PM
120 volts won't likely do a 2-1/2 HP pump any good ~ you expect them to require 240 volts

greenmonster304
07-31-2012, 07:23 PM
120 volts won't likely do a 2-1/2 HP pump any good ~ you expect them to require 240 volts

Maybe he got 120 on each leg of the 240 line to ground.
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1idejim
07-31-2012, 09:02 PM
Maybe he got 120 on each leg of the 240 line to ground.
Posted via Mobile Device

he's got 240 vac, boots is fooling with him.

if nothing smells burnt and the windings aren't shorted to ground look at what controls the pump. look at the control box, pressure switch or external starting capacitor.

BD79
08-03-2012, 05:04 PM
Yeah 120 both sides. The pump runs off a relay which is working fine. How would I test to see is the windings are shorted?

Dripit good
08-03-2012, 07:39 PM
What's happening when you power it...does the capacitor hum?

1idejim
08-03-2012, 07:41 PM
Yeah 120 both sides. The pump runs off a relay which is working fine. How would I test to see is the windings are shorted?

measure resistance between windings and housing

BD79
08-03-2012, 09:06 PM
No hum when powered. Homeowner just purchased the home but swears he saw it run. The filter is in a small stream that was dangerously low last time I was there. It's possible that he burnt the pump running it dry.