―E22―
8. MAINTENANCE AND TROUBLESHOOTING
8.1 Carrying Out Maintenance
WARNING
●
Do not touch the charging parts inside or outside the wire feeder.
●
Disconnect the wire feeder from the welding power source by turning off the line
disconnect switch in the power box to avoid an electric shock before carrying the
equipment.
No.
Problem
Cause
Solution
1
Wire gets deformed.
Wire pressure is too strong.
Refer to
“Recommended wire
pressure adjustment” in
Section 7.2.
Feed roll of wrong wire size is
used.
Replace it with the feed
roll of proper wire size.
Feed roll and pressure roll are
worn.
Replace the feed roll
and the pressure roll, if
necessary.
2
Wire is not fed.
Poor contact or breakdown in
the control cable.
Check the socket.
Check the cables and
replace them, if
necessary.
Poor contact or breakdown in
the encoder cable
Poor contact or breakdown in
the voltage detection cable
Trouble with the motor
Replace the motor, if
necessary.
Wire pressure is too weak.
Refer to
“Recommended wire
adjustment” in Section
7.2.
Dust or chip is accumulated on
the outlet guide and on the feed
roll.
Remove the dust and
chip.
3
Pressure roll does not rotate
smoothly.
Failure of the pressure roll
holder.
Replace it, if necessary.
4
Shield gas is not supplied when
pressing the torch switch.
The discharge valve is closed of
the gas cylinder.
Open the valve.
Lack of gas pressure in the gas
cylinder
Check gas pressure.
Failure of gas solenoid valve
After checking the gas
solenoid valve, replace
it, if necessary.
5
Shield gas supply does not stop.
Failure of gas solenoid valve
Check
the
socket.
Check the cables and
replace it, if necessary.
6
Gas is leaking
Crack in the gas hose
Replace them, if
necessary.
7
Wire is not fed smoothly through
the wire reel.
Adjustment of the brake is either
too strong or too weak.
Refer to “Adjustment of
the wire reel hub” in
Section 7.3.
