L100 run motor capacitor

[phil0121]

Phil from the U.K. here.....with another plea for help. O.K. I now have a replacement capacitor, got it from Classichammonds in the U.S. Am I safe in wiring it the same as the burnt one? What I mean is, how do I know which way round it is. The new one has a label on it, which in the U.K. usually means that's the front of it, prob is, if it's the BACK then I could be wiring it the opposite way round...any ideas guys?
Cheers
Phil

[Guitarbro]

The run capacitor is non-polar so it does not matter which way you connect it.

[phil0121]

Many thanks for that, electrically inept !!

[Wes]

Hi, Phil -- please make sure they supplied you with a UK part, the power frequency is different over there. Your capacitor should say 1uF or 1.5uF - 3uF is the value for the US.

[phil0121]

Hi Wes, Classichammonds told me that, after the transformer, all components were of U.S. standard and have sent me a 3uF capacitor. The one I've taken out reads
AO-24312-1 1.25mfd +/- 5% 660vac. Could you clarify or tell me what I should be searching for if this one is wrong?

[Wes]

I am by no means an expert here, and I don't know for sure what will happen if you use the wrong run motor capacitor, but the capacitor is hooked directly to the AC mains -- BEFORE the transformer -- and the factory used 3uF in the US but 1.25uF in Europe (they also used different motors). The value of the capacitor is directly related to the frequency of the AC mains.

According http://en.wikipedia.org/wiki/Motor_c...Run_capacitors, "If the wrong run capacitor is installed, the motor will not have an even magnetic field, and this will cause the rotor to hesitate at those spots that are uneven. This hesitation can cause the motor to become noisy, increase energy consumption, cause performance to drop, and cause the motor to overheat."

I posted some links to 1uF capacitors which should work in the last thread on this topic, http://www.organforum.com/forums/sho...l=1#post279864