Does anyone have a service, maintenance, or operation manual for an older Union Carbide HWC-7 welding control? Praxair has looked in their arcives but came up with nothing. We have two of the older units but no documentation.
Thanks
http://www.geocities.com/obieronkenobie/hwc-7/1.JPG
http://www.geocities.com/obieronkenobie/hwc-7/2.JPG