iWeld GORILLA POWERTIG 200 AC/DC GORILLA POWERTIG 200 AC/DC, User Manual

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EN
4. Troubleshooting
The following operation requires professional knowledge on electric application and
comprehensive safety knowledge. Operators should be licensed with related quali fi -
cation certi fi cates (still in validation) which can prove their skills and knowledge.
Make sure the power supply is cut off before uncovering the welding machine.
Common Malfunction Analysis and Solution
The failures listed below may be related to your accessories, gas, working environment, power supply condi-
tions. Please try to improve the above so that to avoid similar failures.
Malfunction Cause Solutions
Fan doesn’t work or has ab-
normal revolving speed after
power on
Temperature is too low or
fan is broken.
When the temperature is too low, please oper-
ate welder for a while and wait till the internal
temperature is increased; if the fan is still not
working, change the fan.
MMA
Dif fi cult arc ignition
Low arc ignition current or
short ignition time.
Adjust (increase) the arc ignition current and
time.
Over arc ignition or over-
size molten pool
Ignition current is too big or
ignition time is too long.
Adjust (decrease) the arc ignition current and
time.
Abnormal arc
Poor power cable con-
nection
Make sure the well connection of power cable.
Sticking electrode Low arc force current Adjust(increase) the arc force current
Burning electrode holder
Electrode holder rated
current is too low
Change a larger current electrode holder.
Easy arc breaking Network voltage is too low Please operate when network voltage is back
to normal.
TIG
No output current when
torch switch is on.
Some TIG function allows
welding ending while torch
switch is still on.
Release torch switch and restart welding
Welding disconnection
circuit
Check the circuit and reconnect
When it’s under HF arc
ignition mode, no arc
ignition when turn on the
torch switch.
Poor connection of weld-
ing torch switch.
Reconnect and tighten the welding torch
Over-wide spark gap. Adjust the spark gap(about 0.8mm)
Over burning of tungsten
electrode.
Reverse connection of
welding torch and ground
cable
Exchange the two plugs’ position
Cleaning intensity is too big Decrease the cleaning intensity
Black welding spot.
Welding spot is poorly
protected and has oxida-
tion
1. Make sure the argon cylinder valve is open
and has enough pressure. If the internal pres-
sure is lower than 0.5Mpa, please re fi ll the gas.
2. Please check if the argon fl ow is normal or not.
You may choose different fl ow according to
different welding current. But under-volume
gas fl ow may result in incomplete coverage of
welding spot. We suggest the min argon fl ow
of 5L/min no matter how small the welding
current is.
3. Please make sure the well sealing of all gas
circuit as well as gas purity.
4. Please check if there is strong air fl ow in the
working environment.
Dif fi cult arc ignition, easy
arc breaking
Poor quality tungsten elec-
trode or severe oxidation
of tungsten electrodes
1. Change good quality tungsten electrodes
2. Remove the oxidation layer.
3. Prolong the post- fl ow time so that to avoid
tungsten oxidation
4. Adjust the spark gap(around 0.8mm)
Unstable welding current
during welding
Big fl uctuation of network
voltage or poor connec-
tion with power grid.
Interference from other
equipment
1. Make sure the power grid is normal and well
connection of power source connector.
2. Use different power cables for those severe
interference equipments
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