Difference between revisions of "Pump Capacitors" - Further Reading

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Be careful when handling a capacitor.  It can hold a voltage charge for a long time and you can be shocked by it.  To drain all the power out of a capacitor you can touch both prongs together with the shaft of an insulated screwdriver.  You may get a spark or pop from the current outflow.
 
Be careful when handling a capacitor.  It can hold a voltage charge for a long time and you can be shocked by it.  To drain all the power out of a capacitor you can touch both prongs together with the shaft of an insulated screwdriver.  You may get a spark or pop from the current outflow.
  
The voltage rating should be at least √2 x the intended voltage. Assuming a maximum voltage of 250 volts, the capacitor minimum rating should be 354 volts. So, 370 volts should be fine. 440V is a better quality capacitor and will last longer, especially under high temperature conditions, but the 370 volt should be fine.
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The voltage rating should be at least √2 x the intended voltage. Assuming a maximum voltage of 250 volts, the capacitor minimum rating should be 354 volts. So, 370 volts should be fine. 440V is a better quality capacitor and will last longer, especially under high temperature conditions, but the 370 volt should be fine.<ref>https://www.troublefreepool.com/threads/370-v-440-v-run-capacitor.192386/post-1695423</ref>
 
   
 
   
 
It has been reported that many Ace Hardware Stores carry start capacitors if you need something right now.<ref>https://www.troublefreepool.com/threads/bad-capacitor.190116/#post-1694317</ref>
 
It has been reported that many Ace Hardware Stores carry start capacitors if you need something right now.<ref>https://www.troublefreepool.com/threads/bad-capacitor.190116/#post-1694317</ref>

Revision as of 23:47, 17 August 2019

A common reason for pumps not starting is failure of the start capacitor. There can be two types of capacitors in a pump - a start capacitor and/or a run capacitor.

Not all motors have run capacitors. The newer VS pumps do not have a start capacitor either.

The start capacitor is often under the small bump at the top of the motor. Or it can be inside the motor.

Some capacitors have a bleed resistor connecting the two prongs. If your capacitor has a bleed resistor it should be moved to the new capacitor.[1]

Be careful when handling a capacitor. It can hold a voltage charge for a long time and you can be shocked by it. To drain all the power out of a capacitor you can touch both prongs together with the shaft of an insulated screwdriver. You may get a spark or pop from the current outflow.

The voltage rating should be at least √2 x the intended voltage. Assuming a maximum voltage of 250 volts, the capacitor minimum rating should be 354 volts. So, 370 volts should be fine. 440V is a better quality capacitor and will last longer, especially under high temperature conditions, but the 370 volt should be fine.[2]

It has been reported that many Ace Hardware Stores carry start capacitors if you need something right now.[3]

How To Select the Right Capacitor For Your Pool Pump Motor

How To Replace a Pool Pump Capacitor