Jasic MIG160PFC - Page 50

Page 50
Rapid
tungsten
electrode
burnout
Welding torch is
connected to the wrong
polarity
Switch the two plug positions
Blackening of
solder joints
Welds are not effectively
protected and 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, or whether the gas purity is too
low.
(4) Check whether there is strong
ambient air flow in the environment.
Arc is hard to
start and easily
interrupted
Poor quality or serious
oxidation of tungsten
electrode
· Replace tungsten grade with better
quality.
· Grind off the tungsten oxide layer.
Unstable
current in
welding
process
The voltage of the
power grid fluctuates
seriously or the joint
contact with the power
grid is poor.
Serious interference
from other electrical
equipment.
· Check whether the power grid is normal
and connect the power connector.
· Use different power cords to connect
equipment that could seriously interfere
with welder.
Other faults
Please contact the maintenance
personnel of JASIC Technology Co. Ltd