CutterComp
Plastic
- Joined
- Jul 5, 2019
I know this might not quite fall within the realm of this forum, but I figured the most electrical knowledge is hanging out here.
Background info: The mag starter in question is on a Saylor Beall VT735-80 air compressor. 5hp and 3 phase. I just acquired the compressor after it sat for probably 15 years as a backup unit in a shop I used to work for. It was in a clean, dry, climate controlled environment during that time. It installed it in my home shop after some TLC. I'm running it off a 40hp North America Phase Converter unit, which is also running other equipment flawlessly. The mag starter is a Gould I-T-E piece, NEMA size 1.
Now you'll have to forgive my lack of expertise, but my understanding is that these work by energizing an electromagnetic coil which causes it to move and thereby brings a set of movable contacts to a set of fixed contacts which allows current to pass through to the load. The issue is that this automatic sequence is not occurring. I have tried reseting it the overload portion of the mag starter. The Start and Stop buttons have no effect either.
However, I can manually push the contacts together and the compressor starts and runs great. As soon as I release the contacts, the compressor shuts off. So it seems to me that the coil is not working correctly. But I'm not sure how the start and stop buttons come in to play... I've noticed many mag starters don't have them.
In the final picture, you can see the coil surfaces seem a bit rusty.
Also, I do have correct voltage coming into L1,L2,L3, I checked that with my meter. Any advice on troubleshooting this starter would be appreciated.
Thanks.
Background info: The mag starter in question is on a Saylor Beall VT735-80 air compressor. 5hp and 3 phase. I just acquired the compressor after it sat for probably 15 years as a backup unit in a shop I used to work for. It was in a clean, dry, climate controlled environment during that time. It installed it in my home shop after some TLC. I'm running it off a 40hp North America Phase Converter unit, which is also running other equipment flawlessly. The mag starter is a Gould I-T-E piece, NEMA size 1.
Now you'll have to forgive my lack of expertise, but my understanding is that these work by energizing an electromagnetic coil which causes it to move and thereby brings a set of movable contacts to a set of fixed contacts which allows current to pass through to the load. The issue is that this automatic sequence is not occurring. I have tried reseting it the overload portion of the mag starter. The Start and Stop buttons have no effect either.
However, I can manually push the contacts together and the compressor starts and runs great. As soon as I release the contacts, the compressor shuts off. So it seems to me that the coil is not working correctly. But I'm not sure how the start and stop buttons come in to play... I've noticed many mag starters don't have them.
In the final picture, you can see the coil surfaces seem a bit rusty.
Also, I do have correct voltage coming into L1,L2,L3, I checked that with my meter. Any advice on troubleshooting this starter would be appreciated.
Thanks.