Welder Wilk
New Member
- Messages
- 13
- Location
- Lincoln UK
There may be two thin wires attached to the capacitor bank ( as opposed to the heavy bus bars there ) which go to a pair of normally-closed ( NC ) contacts on the main contactor ( heavy-duty relay ). The resistor should be connected on the other side of that pair of contacts.
You could still use the welder, if you have to, it's just that when you first touch the end of the wire against the workpiece you will see a spark, which is due to the remaining charge in the capacitors. This will be just before you press the torch trigger, it can be a bit disconcerting, and long-term it is better for the capacitors to be discharged through a resistor rather than with a dead short.
If you scrape the paint off the end of the old resistor you may find a brass end-cap, to which you could temporarily solder a wire.
That'll do the job, the wires will go from it to the contactor NC contacts with the capacitors on the other side, to bleed the voltage on them off when you release the trigger - circled in red below!
Would that do the job?