Machine - zika TIG160S User Manual

OPERATORS' MANUAL · TIG SERIES
Malfunction Phenomena
Turn on the machine, the
protection LED is off, but
there is no HF discharge
rustling, and arc can be
ignited by scraping.
Turn on the machine, the
protection LED is on, and
there is no welding output.
The output current
unstable and cannot be
controlled by potentiometer
when welding.
There is excessive spatter in
MMA welding, and it is hard
to ignite the basic electrode.
14
1. The primary wire of the arc ignition transformer is not well connected to
the power PCB. Reconnect it.
2. The discharge nozzle is oxidized or the interelectrode distance of the
discharge nozzle is too long. Get rid of the oxidation film or adjust the
interelectrode distance of the discharge nozzle to about 1mm.
3. Check if the MMA/TIG switch is damaged, and replace it if necessary.
4. Check if there are some parts in the HF arc ignition circuit, and replace
them if necessary.
1. Overcurrent protection: Shut down the machine, and restart it when the
protection LED is off.
2. Overheating protection: Wait for 2~3 minutes without shutting down the
machine, and it will recover automatically. (Machines for TIG welding only
are without overheating protection function.)
3. The inverter or arc ignition board fails. Pull out the power supply plug
(near VH-07 of the fan) of the main transformer on the MOS board, and
restart the machine.
1) If the protection LED is still on, shut down the machine, pull out the
power supply plug (near VH-03 of the fan) of the HF arc ignition
power supply, and restart the machine.
A. If the protection LED is still on, check if some of the MOSFET on
the MOS board are damaged, and replace them if necessary.
B. If the protection LED is off, check if the transformer booster in the
HF arc ignition circuit on the power PCB is damaged, and
replace it if necessary.
2) If the protection LED is off:
A. Check if the transformer on the center PCB is damaged, and
replace it if necessary.
B. Check if some secondary rectifier diode of the transformer is
broken down, and replace it if necessary.
4. The feedback circuit opens.
is
1. Check if the potentiometer (1K) is damaged, and replace it if necessary.
2. Check if any loose contact exists inside the machine.
The output polarity is incorrect. Exchange the polarity.
Cause and Solution
R160A SC-A5