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8. MAINTENANCE AND TROUBLESHOOTING
8.1 Carrying Out Maintenance
WARNING
●
Do not touch the charging parts inside or outside of the wire feeder.
●
Disconnect 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
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 with a new ones.
2
Wire is not fed.
Poor contact or breakdown in
the control cable.
Check the socket. Check the cables
and
replace
with
new
ones
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 with a new one.
Wire pressure is too weak.
Refer to “Recommended wire
adjustment” in Section 7.2.
Dust and chip are 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 with a new one.
4
Shield gas is not
supplied when pressing
the torch switch.
The discharge valve of the gas
cylinder is closed.
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 with new one.
5
Shield gas supply does
not stop.
Failure of gas solenoid valve
Check the socket. Check the cables
and replace with new one.
6
Defective gas hoses
Crack in the gas hose
Replace them with new one.
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.
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20
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