joacchim
Apr 27, 2009, 11:25 AM
Hello - I took apart my old Westinghouse window fan to paint it and had to disconnect the capacitor, which was mounted to the frame. I could've sworn the capacitor leads were connected to (1) a green wire coming from the fan motor and (2) a terminal labeled S2 on the control switch. However, when I reassembled the fan I found one of the 120V supply wires disconnected and don't know where it goes. I tried connecting it with the green motor/capacitor junction but when I try the fan it just hums.
This fan motor has 6 leads: Green, white, blue, black, red, yellow.
The control switch has 6 positions plus "off" in the middle. When you turn it one way, the fan starts in high speed, then medium, then low. When you go back to off, then go the other way, the fan reverses direction in high, then medium, then low. The switch has 8 terminals, 4 on each side of a square-shaped housing, and the leads are plugged into it similar to how wires can be plugged into modern outlets (as opposed to screw terms):
S1 - White to motor
S2 - capacitor (which I disconnected here at the switch to remove the capacitor)
A - Black to motor
B - Blue to motor (and also to terminal #3 on other side of switch)
L1 - 120V power wire
1 - Red to motor
2 - Yellow to motor
3 - Blue to motor (and also to terminal B on other side of switch)
I was pretty sure the green lead from the motor went to the capacitor. It's funny, the green lead is tinned so I thought maybe it belongs plugged into the switch, but again could've sworn it was connected to the capacitor. Can anyone help me figure out where the other 120V (L2) lead should connect? As I said, already tried connecting it with the green/cap lead without success. I don't want to try something that will burn up my motor... Also, I thought maybe the cap was bad so I went to my local motor store and they checked capacitance, it was 3 mfd (can't read the number on the case). I bought a new one 7.5 mfd (looked physically the same size) and the motor barely starts... Also tried putting a large (53mfd) cap there, the motor will start and reverse but the medium and low speeds are way slower than they should be, so something still isn't right.
Thanks in advance for any help!
This fan motor has 6 leads: Green, white, blue, black, red, yellow.
The control switch has 6 positions plus "off" in the middle. When you turn it one way, the fan starts in high speed, then medium, then low. When you go back to off, then go the other way, the fan reverses direction in high, then medium, then low. The switch has 8 terminals, 4 on each side of a square-shaped housing, and the leads are plugged into it similar to how wires can be plugged into modern outlets (as opposed to screw terms):
S1 - White to motor
S2 - capacitor (which I disconnected here at the switch to remove the capacitor)
A - Black to motor
B - Blue to motor (and also to terminal #3 on other side of switch)
L1 - 120V power wire
1 - Red to motor
2 - Yellow to motor
3 - Blue to motor (and also to terminal B on other side of switch)
I was pretty sure the green lead from the motor went to the capacitor. It's funny, the green lead is tinned so I thought maybe it belongs plugged into the switch, but again could've sworn it was connected to the capacitor. Can anyone help me figure out where the other 120V (L2) lead should connect? As I said, already tried connecting it with the green/cap lead without success. I don't want to try something that will burn up my motor... Also, I thought maybe the cap was bad so I went to my local motor store and they checked capacitance, it was 3 mfd (can't read the number on the case). I bought a new one 7.5 mfd (looked physically the same size) and the motor barely starts... Also tried putting a large (53mfd) cap there, the motor will start and reverse but the medium and low speeds are way slower than they should be, so something still isn't right.
Thanks in advance for any help!