38
S/N
Troubles
Reasons
Solution
3
Turning 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 can not 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.
There is not
spark on the
HF igniting
board.
The HF igniting board does not work.
Repair or change Pr8
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
11
No AC output while selecting
“AC”
The power PCB is in trouble.
Repair or change it.
The AC drive PCB damaged.
Change it.
The AC IGBT module damaged.
Change it.
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.
Содержание ArcoTiG HF 315 AC/DC
Страница 1: ... ...
Страница 16: ...INSTALLATION AND ADJUSTMENT 16 3 6 Assembling the equipment TIG ArcoTig 250W 315W ACDC ...
Страница 40: ...40 5 3 Electrical principle drawing ...