Troubleshooting Table - Panasonic YC-400TX4 Operating Instructions Manual

10.2 Troubleshooting table

failures
The front panel light doesn't on or the
cooling fan doesn't
machine is power on.
There is no HF or arc start.
No arc start occurs even there is HF.
No arc start occurs at the STICK
states,
No gas flow.
Continuous gas flow
Unstable arc or
performance
Arc breaking
High consumption of the electrodes.
The machine is not connected to the power supply
work when The fuse is damaged and the circuit electrons may be damaged.
he fuse on the distribution box is damaged.
The MODE is selected as STICK.
Poor contact of the torch switch.
No gas flow.
Poor contact of the base metal.
The gap between electrode & base metal is too large.
The MODE is not STICK.
The gas hose doesn't connect with the machine
Serious gas hose banding.
。Defective gas valve.
The gas check states is selected as "CHECK".
The post-flow time is too long
Defective gas valve.
Poor connection of the input/output terminals.
Regarding to the dia. of the electrodes, the welding current is too
bad welding
low.
。Defective electrodes.
Regarding to the dia. of the sticks, the welding current is too low.
The gap between electrode & base metal is too large.
Regarding to the dia. of the electrodes, the welding current is too
large.
The pre-flow/post flow time is too short.
no gas flow
The TIG torch is connected to the "+" side.
check points
27