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Old 02-27-2013, 08:54 AM   #1
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Default well control box caps

It is a pretty common thing around here for just a capacitor to go out of a well control box. Rather than replacing the whole box, I would like to have capacitors on hand. I mostly see 3/4 and 1 hp 230v well pumps. Does anyone have a chart of what size cap for what size pump?
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Old 02-27-2013, 10:20 AM   #2
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I looked, but there is a chart for aluminum case caps, and one for plastic case caps. Which are you using? It depends on what the motor is, efficiency, HP, etc. You don't always have that info when dealing with an UG well pump.


This is from a refridgeration guy,

Quote:
This is not a FIX all but a rule, a basic method for motor capacitors.

(2650 x Full load amps ) divided by supply Voltage = MFD

Example 2650 x 8amps = 21200 divided by 240volts = 88.33 MFD

Plus or minus say 10% so call it 95 MFD it will not be correct but will get you out of a hole and the kit back working if that is the real fault and the capacitor has not failed due to other factors etc.
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Old 02-27-2013, 06:23 PM   #3
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What brand motors/controls? Franklin Electric?
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Old 02-27-2013, 08:07 PM   #4
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yes, franklin control boxes. These are start caps, they do not contain any runs on the stuff I have seen.
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Old 02-27-2013, 08:32 PM   #5
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Look up their AIM manual with google. They have charts for all their control boxes plus a bunch of other good info.

I've had a print copy forever since I was doing wells all the time with a motor shop.
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