30
The distance between tungsten electrode
and workpiece is too long.
Reduce the distance (about 3mm).
There is nil
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 torch switch.
Check the welding torch switch, control
cable and aero socket.
8
No gas flow (TIG)
Gas cylinder is closed, 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 flows continuously.
The gas-test on the front panel is on
The gas-test on the front panel is off
Something in the valve
Remove it
Electromagnetic valve is damaged
Change it
The adjustment knob of pre-gas time on the
front panel is damaged
Repair or change it
10
The welding current can not be
adjusted
The welding current potentiometer on the
front panel connection is not good or
damaged
Repair or change the potentiometer
12
The welding current displayed
isn’t accordant with the actual
value.
The min value displayed isn’t accordant with
the actual value. (Please refer to 3.1)
Adjust potentiometer Imin on the power
board.
The max value displayed isn’t accordant with
the actual value. (Please refer to 3.1)
Adjust potentiometer Imax on the power
board.
13
The penetration of molten pool
is not enough.
The welding current is adjusted too low
Increase the welding current
The arc length is too long.
Use 2T operation
14
The alarm lamp on the front
panel is on
Over heat protection
Working time too
long
Reduce the duty cycle (work
intermittently)
Over-voltage
protection
Power supply
fluctuates
Using the stable power supply
Low-voltage
protection
Power supply
fluctuates
Using the stable power supply
Too many machines
using power supply
in the same time
Reduce the machines using power
supply in the same time
Over-current
protection
Unusual current in
the main circuit
Check and repair the main circuit and
drive Pr6
Содержание ArcoTig HF200P
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Страница 18: ...HF200POPERATION ThelayoutoftheBackPanel 9 PrimaryPowerLead 10 MachineOn OffSwitch ...
Страница 34: ...31 5 3 Electrical principle drawing ...