ionTig 200 AC/DC
Copyright © Mundaka Welding & Gases, Inc.
34
S/N
Troubles
Reasons
Solution
The fan motor damaged
Change fan
3
Turn on the power source, the power
lamp is not on, and fan doesn
’
t work
No power supply input
Check whether there is power supply
The fuse inside the machine
damaged
Change it (3A)
4
The number on the display is not intact.
The LED in the display is broken
Change the LED
5
The max and min value displayed doesn
’
t
accord with the set value.
The max value is not accordant
(refer to §3.1)
Adjust potentiometer Imin on the power
board.
The min value is not accordant
(refer to §3.1)
Adjust potentiometer Imaxin the current
meter.
6
No no-load voltage output (MMA)
The machine is damaged
Check the main circuit and the Pr4.
7
Arc cannot be
ignited (TIG)
There is spark on the HF
igniting board.
The welding cable is not connected
with the two output of the welder.
Connect the welding cable to the
welder
’
s output.
The welding cable damaged.
Repair or change it.
The earth cable connected unstably.
Check the earth cable.
The welding cable is too long.
Use an appropriate welding cable.
There is oil or dust on the
workpiece.
Check and remove it.
The distance between
tungsten
electrode and workpiece is too
long.
Reduce the distance (about 3mm).
There is not spark on the
HF igniting board.
The HF igniting board does not
work.
Repair or change Pr8
The distance between the discharger
is too short.
Adjust this distance (about 0.7mm).
The malfunction of the welding gun
switch.
Check the welding gun switch, control
cable and aero socket.
8
No gas flow (TIG)
Gas cylinder is close or gas pressure
is low
Open or change the gas cylinder
Something in the valve
Remove it
Electromagnetic valve is damaged
Change it
9
Gas always flows
The gas-test on the front panel is on
The gas-test on the front panel is off
Something in the valve
Remove it
