Jasic TIG200 - Page 47

Page 47
during arc start
is long
Cannot start
normal arc
The power cord is
not connected
properly
Connect the power cord
Welding slag
difficult to
remove
Low arc force
Increase the arc force
Hot electrode
holder
The rated current of
electrode holder is
too low
Change the electrode holder with a high
current one
Arc is easily
interrupted
Low mains voltage
Use after the mains power is normal
Other faults
Please contact the maintenance
personnel of Shenzhen JASIC
Technology Co., Ltd.
Elimination of general problems in TIG
Symptom
Reasons
Troubleshooting
No current is output
when torch trigger is
pressed
Welding circuit is
open
Check the welding circuit and reconnect it
No discharge when
starting the arc at high
frequency after
pressing the torch
trigger to start the arc
The torch switch is
not plugged in
Plug in the torch switch
The discharge nozzle
gap on the discharge
plate is too large or
the nozzle is
completely closed
Adjust the spark gap on the discharge
plate (about 1mm)
Rapid tungsten
electrode burnout
Welding torch is
connected to the
wrong polarity
Switch two plug positions
Blackening of solder
joints
Welds are not
effectively protected
and become oxidized
(1) Ensure that the valve of argon cylinder
is open and there is enough pressure.
Generally, if the cylinder pressure is lower
than 0.5 MPa, it must be refilled.
(2) Check whether the argon flow rate is
normal. You can select the flow rate
according to the welding current condition,
but too low a flow rate may lead to
insufficient shielding gas to cover all weld
joints. It is suggested that the argon flow
rate be no less than 5L/min, no matter
how small the current.
(3) Check whether the gas path is leaking,