|Forum topic by Loren||posted 02-07-2014 06:44 PM||1060 views||0 times favorited||7 replies|
02-07-2014 06:44 PM
Here are some not very good pictures of a toasted magnetic contactor. It’s an S-C35L. It’s a 35 amp 3 phase contactor from Asia. It’s probably about 25 years old. It looks to me like the basic contactor is stacked on another thing, a base, which I think functions to provide 110v power to a pneumatic solenoid valve. It’s from a 13” wide belt sander made by JET. The machine is old enough that there’s no manual available on the JET site. I haven’t called JET, but in any case I have doubts as to whether they’d have this part. The contactor doesn’t work very well starting the motor but will do so. The contacts are in bad condition so it chatters sometimes. The other problem is when the air is hooked up, the contactor chatters on and off and this turns the solenoid on and off which pulses the pneumatic brake cylinder and works against the motor getting started.
It need replacing in any case. I think what I need is just the top part, but I need one that is compatible with the 110v base part. So it’s a spec and mounting issue. I’ve taken it apart and examined everything. The coils inside look good. Only the contacts are bad.
I don’t want to spend a lot of money replacing this part on a machine that may have other problems, so I’m looking for the least costly short term way to get this working so I can further assess the status of the machine.
I appreciate any insight on repairing or replacing the top part of this sort of stacked unit.