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AC CAPACITOR FOR AC MOTOR CONNECTION

BlinkingLeds

Feb 23, 2013
180
Joined
Feb 23, 2013
Messages
180
Hi. A friend of mine has an remote controlled garage door. It has a 4 lead 350W AC motor. It has 2 relays to control the rotation direction of the motor
The wires connections are as follows:
1. Green/Yellow => Ground
2. Gray => 240v through a 4a fuse and a transparent control relay
3. Brown => off position of the white relay which takes power from the transparent
4. Black => on position of the white relay

It also has an AC capacitor that supposed to be connected to the motor (parallel or series, i have no idea).
A few years back the capacitor blew up (he doesn't remember it's capacitance but he thinks it was about 12uf) and my friend replaced it with 16uf (was that a mistake?) it worked ok until yesterday when the capacitor , the 4a fuse and the pcb traces from the relays to the motor connectors blew up. He disconnected the capacitor which was rated for 250v (too little tolerance isn't it?) I bought him a 450v one but now i don't know how to connect it...
Can you shed some light on this?

Best regards and thanks in advance!
 

shrtrnd

Jan 15, 2010
3,876
Joined
Jan 15, 2010
Messages
3,876
Manufacturers color-code their own systems.
What's the make and model of your garage door opener?
It'll help a lot in identifying the wiring.
 

BlinkingLeds

Feb 23, 2013
180
Joined
Feb 23, 2013
Messages
180
I can go and check the motor at my friend's house tomorrow
if that helps, the board is labeled:
COMUNE where the gray wire goes
APRE and CHIUDE where the two other wires go.

Actually i'm not sure if both brown and black wires connect to the pcb maybe one of them is connected via the capacitor? but it doesn't make sense.
 
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