―21―
8. MAINTENANCE AND TROUBLESHOOTING (continued)
<Schematic Diagram>
CAUTION
●
Never attempt to disassemble the feed motor. This may result in damage to the wire feeder.
●
Never check the amount of brushing friction or replace the brush.
Service life of the brush varies depending on ambient temperature and welding condition, etc., but
normally the service life is about 4,000 hours. (If the machine is operated for six hours a day, the
service life of the brush will be about two years). Periodical replacement of the feed motor is
recommended.
Base metal
direct
detection (-)
－
21
－
