Electrex TP 254 Manual De Instrucciones página 13

7.2 -TIG WELDING MODE
- Make the necessary connections to mains and earth as described in "Installation".
- Connect earth cable to positive plug by turning it firmly to right to assure a perfect electric contact.
- Connect TIG torch power cable to negative plug by turning it to right to assure a perfect electric contact.
- Connect gas tube to gas connection.
- Connect TIG torch control cable to the front panel connector.
- Connect input gas tube to gas inlet on machine rear panel and to the flowmeter on gas bottle. Check the content
of gas bottle, and replace it, if necessary.
- Adjust gas flow 6 l/min and 12 l/min according to the value of the current.
- Apply a tungsten electrode on TIG torch. The electrode must be sharpening according the welding method: TIG
DC (tip sharpen).
- Turn the main switch on rear panel to ON position.
- The Power ON indicator lights, indicating that machine is under voltage.
- Select TIG HF* (TIG welding with high frequency ignition) or LIFTIG** (TIG welding with contact ignition). In both
modes, there is the PULSED welding mode available (both indicators are lit respectively).
* TIG HF:
1-pre-gas 2-HF ignition 3-welding 4-post-gas
5-stop
** LIFTIG:
6-close gas
1-open gas 2-contact 3- arc ignition 4-w elding 5-stop
LIFTIG ignition (by contact) should be used when the high frequency radiations could disturb the functioning of
electronic devices near the welding zone (computers, pace-makers, medical tools, etc).
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