Nippon Gases 2719135, Руководство по эксплуатации и технике безопасности, Страница: 16 / 44

16
ES
PT
MICROTIG DC 162 / 202 PULSE
1-abrir gas 2-contact 3-cebado 4-soldadura 5-parar 6-cerrar gas
1-pré-gas 2-cebado HF 3-soldadura 4-post-gas
5-parar
8.2. TIG welding
- Make the mains and earth connections as described in the chapter "Installation".
- Connect the earth clamp cable to the positive socket by rolling it firmly to the right until a
perfect contact is ensured.
- Connect the power cable of the TIG torch to the negative socket by turning it firmly clockwise
until a perfect contact is ensured.
- Connect the gas hose of the TIG torch to the gas connection.
- Connect the torch control cable plug to the front panel connection.
- Connect the gas tube of the torch to the gas inlet on the rear panel and to the gas tube flow
meter. Check the gas content in the tube and, if necessary, change it.
- Regulate the gas flow through the pressure regulator of the flow meter 6 l/min and 12 l/min
depending on the current value.
- Apply the appropriate tungsten electrode to the TIG torch. The electrode must be sharpened
according to the selected welding mode - TIG DC sharpened on the tip.
- Switch on the machine by turning the main switch, located on the rear panel, to the ON position.
- The machine on and over voltage indicator lights up, indicating that the machine is over voltage.
- Select either TIG HF* (TIG welding with high frequency ignition) or LIFTIG** (TIG welding with
contact ignition). In both modes, there is a pulsed welding mode function - PULSED (both
indicators are lit respectively).
* TIG HF:
** LIFTIG:
This process is used in premises where the emission of high frequency waves may affect the operation
of sensitive electronic devices such as computers, hospital equipment, cardiac pacemakers, etc.
- Select 2T* (2-stroke) / 4T** (4-stroke) mode.
* 2T - Gas starts flowing according to the set PREGAS time when the torch trigger is pressed, and the
arc is established. The current rises according to the UPSLOPE time and the current IStart value for
the set Ip value. When the torch trigger is released, the current decreases according to the IFinal
current value. After the set DOWNSLOPE time, the arc is switched off and the POST GAS time starts.