hockeyoligist2
Senior Member
- Location
- close to greenville sc
I had a 480v motor, with brakes, go bad on a bar screen climber that got submerged in sewer water.
The manual release was stuck, so we tried to release it electrically.
Due to a broken rib and the position of where it stopped. I couldn't un-wire it or release the brake so that we could pull it up with our truck crane. So a mechanic removed the wires to try to energize the brake and release it.
Since I couldn't see, I told him to just connect two of the leads to the brake wires thinking that it was a 480v coil.
It smoked and didn't release.
He removed the cover and manually released the brake so that we could pull it up.
After we got it up to where I could see and he told me where he disconnected the wires.
It was a nine lead motor.
The brake was tied in to the wires on 6 and 9 and 4 and 7.
I must have missed that class on how that reduces voltage by wiring it that way!
Can anyone explain? Google doesn't help!
The manual release was stuck, so we tried to release it electrically.
Due to a broken rib and the position of where it stopped. I couldn't un-wire it or release the brake so that we could pull it up with our truck crane. So a mechanic removed the wires to try to energize the brake and release it.
Since I couldn't see, I told him to just connect two of the leads to the brake wires thinking that it was a 480v coil.
It smoked and didn't release.
He removed the cover and manually released the brake so that we could pull it up.
After we got it up to where I could see and he told me where he disconnected the wires.
It was a nine lead motor.
The brake was tied in to the wires on 6 and 9 and 4 and 7.
I must have missed that class on how that reduces voltage by wiring it that way!
Can anyone explain? Google doesn't help!