drum switch wiring problem

[phil harold]

I have a central machinery complex drilling / mill machine
drum switch broke
bought replacement tried to rewire it, no success
I did not take pic or note original switch wiring :mad:
time has passed, I need this operational yesterday...

It is wired for 220 single phase

can anyone help me?

thanks
phil
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[Rod Sheridan]

Hi, your motor has three windings,

- Run 1) wires 1 and 2 with 1 being marked for polarity

- Run 2) wires 4 and 3 with 3 being marked for polarity

- start 1) wires 5 and 6

Your motor is presently wired for 120 volts

your switch should be wired as Follows

Power Input

- black (line) to terminal # 2

- white (neutral) to terminal # 6

- green to case

Motor

Blue wire terminal 1

Black wire terminal 2

Black wire terminal 3/5

Red wire terminal 4

The above is assuming the wire taped to the start capacitor is indeed black.

Regards, Rod.

[phil harold]

Okay...

the capacitor is connected to a brown wire
I changed this over from 120 to 220 15 years ago

well at least I did something then put a 220 plug on the end of it, been running that way ever since

[phil harold]

in picture three (diagrams of drum switch)
which is the correct one?
for 220?
split phase?

[phil harold]

now with more info I am still lost

[Rod Sheridan]

Phil, look at your original set of photographs that show the motor wiring diagram.

You have 1 & 4 connected together, and 2 & 3 connected together. That's for 120 volts.

You don't have the motor wired for 240.

Yes you use the diagram for split phase connection.........Rod.

[phil harold]

Well I had a brain fart

the motor was never converted to 220
no matter what my brain told me, I looked at the plug finally...

then understanding a jumper wire between 3/5
made all the difference in the world

Thank You for your patience
and the solution!

time to make the rosette and plinth blocks!


Hi, your motor has three windings,
- Run 1) wires 1 and 2 with 1 being marked for polarity
- Run 2) wires 4 and 3 with 3 being marked for polarity
- start 1) wires 5 and 6

Your motor is presently wired for 120 volts
your switch should be wired as Follows

Power Input
- black (line) to terminal # 2
- white (neutral) to terminal # 6
- green to case

Motor
-Blue wire terminal 1
-Black wire terminal 2
-Black wire terminal 3/5
-Red wire terminal 4
The above is assuming the wire taped to the start capacitor is indeed black.
Regards, Rod.