Maintenance; Troubleshooting - Matco Tools MM200 LCD Operator's Manual

§5.2 Troubleshooting
⚫ Before arc welding machines are dispatched from the factory, they have already been
debugged accurately. So forbid anyone who is not authorized to change the equipment!
⚫ Maintenance course must be operated carefully. If any wire becomes flexible or is
misplaced, it maybe potential danger to user!
⚫ Only professional maintenance personal should maintain the machine!
⚫ Guarantee to shut OFF machine's power before turn on the outline of the equipment!
⚫ If there is any problem and has no the authorized professional maintenance personal of
our company, please contact our local agent or the branch company!
If there are some simple troubles of MIG SERIES welding machine, you can consult the
Chart:
following
NO. Troubles
Close the breaker, but the
1
power light isn't on
After welding machine is
2 over-heat, the fan doesn't
work
Press the
gun switch,
3 no output
shielded
gas
Wire-
feeder
4
doesn't
work
MAINTENANCE AND TROUBLESHOOTING
Breaker damaged
Fuse damaged
Power damaged
Fan damaged
The cable is loosen
No gas in the gas cylinder
No output
Gas pipe leaks gas
gas when
Electromagnetic
test gas
damaged
Output gas
Control switch damaged
when test
Control circuit damaged
gas
Wire reel
Motor damaged
doesn't
Control circuit damaged
work
The press wheel is loosen
or weld wire skids
Wire reel
The wheel doesn't fit with
works
the diameter of weld wire
Wire reel damaged
Reasons
Change it
Change it
Change it
Change it
Screw the cable tightly
Change it
Change it
valve
Change it
Repair the switch
Check the board
Check and change it
Check the board
Press it tightly again
Change the wheel
Change it
- Ⅳ -
Solution