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Help with Clausing 4903 Magnetic Starter
- Thread starter DNORM25
- Start date
Looks like something changed between the first and last pictures. If the heavy red wire going outside the box in the first pic is a motor lead it should land on T2 which is just below the purple L2 wire on the top of the contactor. You can see the T2 marking on the bluish green insulator.
0 volts between v and w. That's with the drum switch in forward or reverse.
The red wire to the left of the left reset is on a terminal labeled x2. Its other end is conected to t2 which when powered has 120 volts. Does this wire feed power to the coil? should it be tapped into a terminal that feeds 240v?
Please bare with me, i'm trying to wrap my head around this and I want to make sure I am understanding correctly. The Orange wire, motor lead and x2 wire need to be attached as shown in the included picture
Attachments
Okay change the leads, but made no difference. Contractor doesn’t pull in and there is no voltage between V and W
- Joined
- Apr 30, 2015
- Messages
- 11,309
Don't know if it's an issue but the leftmost finger looks bent more than the others- Check and make sure the
contact fingers are working normally and none of the "spiders" have come loose from the shaft
Otherwise the switch wiring looks fine- thank goodness Clausing used color coded wires
contact fingers are working normally and none of the "spiders" have come loose from the shaft
Otherwise the switch wiring looks fine- thank goodness Clausing used color coded wires
Will do! Thanks for the reply
Sorry for the delay getting back. Let's try some checks to figure out where we're losing the voltage. With power on and drum switch on check between coil wire V and red wire X2 on the left overload. If you have 240V we're pretty sure it's wired correctly. Then move probe off X2 and on to wire that goes between the overloads. If you lost voltage then the left overload is tripped or bad. If you still have 240V move the probe to the reed wire on the right of the right overload (should be the wire that goes down to coil wire W). If you lost the 240V then the right overload is tripped or bad. If the right overload is the issue, with the power off, you can try to reset it by pushing in the broken plunger with a small screw driver or punch. It can also be stuck too far in when it was broken so you can try tapping it with whatever tool quickly to see if it will bounce out. Also if you could get a few pics of different angles on how it's wired now.