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My booster pump is not working. There is voltage coming out of the switch and voltage at the motor. The shaft is free and rotates smoothly. Can I change the capacitor? and if so how do I do it safely, they can hold quite a charge for a long time. thanks

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Thank you for posting your question here on Fixya.com.


It may be a small part such as the capacitor or the starting switch, but could also be more severe such as the winding itself. You will also want to examine the shaft where it passes thru the pump and motor and look for signs of rust from a pump seal leak.

Start with the capacitor. Use a digital multi-meter (DMM), preferably with a capacitor setting, or an analog meter set for Ohms. With an analog, you should see the needle deflect as if testing a closed circuit then it will slowly drop to 0 if the capacitor is good. If it doesn't move or moves and stays to the side showing a closed circuit the capacitor is bad. If you notice a burn hole near the terminals on the end of the capacitor do not bother to test it. If you do not have access to a meter you can try grounding the posts together with a screwdriver to see if they arc although It is not a very reliable test method. Be sure you are holding on to an insulated handle for the tool you use to short the terminals together or you can get a good poke.

If you are not familiar with testing these parts your best bet would be a local electric motor repair shop to see if the motor can be repaired or if it would need to be replaced. They should also be able to ensure there is no pump damage. If you wish to continue to try to repair it yourself please comment with any questions you have as you work thru the pump and motor.


If this answer does not fix your problem, please comment with additional details or contact me thru our site at www.arrowpools.net prior to rating the answer; I'll do what I can to help. Positive feedback is appreciated once your problem is solved!


John

Posted on Jan 02, 2011

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Thank you for posting your question here on Fixya.com.


Assuming the capacitor is truly ok then either the starting switch that controls the capacitor is the issue or the winding itself. The switch may be worth fixing assuming the rest of the motor is sound. It may just need the contact arm(s) bent back into position. If it is burned up do not bother going further. The likelihood of further motor damage already or in the immediate future make it uneconomical to repair. If it is the winding already, replace the motor.


If this answer does not fix your problem, please comment with additional details prior to rating the answer. You may also contact me thru our website at www.arrowpools.net. Positive feedback is appreciated once your problem is solved!


John

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