Author Topic: Reconnecting Siemens Motor VS07G1890/08 (Read 4402 times)

brett83 · « **on:** February 08, 2015, 10:26:38 am »

Hi I am repairing a Siemens VS07G1890/08 for a faulty motor.

I normally photograph the connections so I remember how it all goes back together, but im not sure how to wire it back up. The motor itself does not tell you which is the positive and negative terminal.

Any ideas what will happen If I wire it wrong the first time. Surely its the voltage difference that makes it go round, so wont it just go round the wrong way ?

Thanks
Brett

brett83 · « **Reply #1 on:** February 08, 2015, 01:04:58 pm »

I'm daft, of course it won't. It will blow it completely. Or seems to have. I'm still getting 230V to the connections, so the wiring and PCB are OK, the fuse didnt blow, so the 'bang' 'pop' noise must have been the motor

. Which I needed to replace anyway as I reconnected the old one.

brett83 · « **Reply #2 on:** February 10, 2015, 07:04:13 pm »

In still stuck on this. The old motor, which still worked before but was noisy went bang. I don't want tondo the same with the new motor.

How can I work out which is +ve and -ve ?

brett83 · « **Reply #3 on:** February 10, 2015, 11:07:48 pm »

Am I being dumb, if polarity mattered surely it would be marked.

I'm starting to think there was carbon in the old motor which just short it out. something went bang and the circuitry works. i connected it up and t worked anyway