OPERATOR’S MANUAL
·
MIG/MAG PULSE SERIES
- 25 -
Table 8.2 Troubleshooting in MMA
Phenomena
Cause
Solution
Very difficult to ignite
arc
The machine is working in simple TIG
mode.
Set the arc force to be a value other
than 0.
Hard to ignite arc
The arc ignition current is too low. Increase the arc ignition current
properly.
The arc ignition time is too short. Prolong the arc ignition time
properly.
Excessive spatter or
overly big molten pool
during arc ignition.
The initial current is too high.
Reduce
the
initial
current
properly.
The initial time is too long.
Shorten the initial time properly.
Normal arc can not be
started.
Phase failure of the mains power
supply or the power cord is not well
connected.
Solve the phase failure problem or
reconnect the power cord.
Electrode sticking
The arc force current is too low.
Increase the arc force current
properly.
The electrode holder
becomes very hot.
The rated current of the electrode
holder is lower than its actual
working current.
Replace it with a higher rated
current.
Arc is easy to break.
The arc breaking voltage is too low. Increase the arc breaking voltage
properly.
Table 8.3 Troubleshooting in MIG/MAG
Phenomena
Cause
Solution
The wire feeder loses
communication with the
welding power supply.
The control cable is disconnected. Connect the control cable.
The control cable is not well
connected.
Reconnect the control cable.
There is no response
when pushing the torch
trigger,
and
the
protection LED is off.
The welding torch is not well
connected to the wire feeder.
Reconnect it.
The control cable of the wire feeder
is not well connected to the welding
power supply.
Reconnect it.
The torch trigger fails.
Repair or replace the welding torch.
When the torch trigger
is pushed, wire feeder
works and gas flows, but
there is no output
current,
and
the
protection LED is off.
The earth cable is not well
connected to the workpiece.
Reconnect it.
The control cable of the wire feeder
is not well connected.
Reconnect it.
The wire feeder or welding torch
fails.
Repair the wire feeder or welding
torch.
There is output current
when pushing the torch
trigger to feed gas, but
the wire feeder does not
work.
The control cable of the wire feeder
is broken.
Repair or replace the control cable
of the wire feeder.
The wire feeder is clogged.
Solve the clogging problem.
The wire feeder fails.
Repair it.
The control PCB or wire feeding
power PCB inside of the machine
fails.
Replace the PCB.
Summary of Contents for MIG 350P
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