8
9
Trigger mode
Selection of trigger mode. Four-times trigger mode
is active when the LED is illuminated, and two-times trigger
mode is active when the LED is turned off. It is not possible
to change trigger method during the welding process.
Two-times
The welding process begins by pressing the torch trigger.
Welding continues until the trigger is released again which
effects the slope-down period.
Four-times
The welding process begins by pressing the torch trigger.
If the torch trigger is released during the slope-up period
welding continues with the adjusted welding current. In
order to stop the welding process the trigger must be
pressed again for more than 0.5s after which the slope-
down period begins. The slope-down period can be
stopped by releasing the trigger. Thereafter the post-flow
starts.
Ignition methods
It is possible to choose between 2 different methods
of ignition for TIG welding: High-Frequency (HF) and LIFTIG
ignition. The ignition method cannot be changed during
welding. The LIFTIG ignition is active when the indicator is
illuminated. The HF is automatically active when the LED is
switched off.
HF-ignition
In HF-TIG ignition the TIG arc is ignited without contact. A
high-frequency (HF) spark initiates the arc when the torch
trigger is activated.
The machine will ensure that a HF ignition will not arise, if
the electrode is in contact with the workpiece. Detach the
electrode and restart.
LIFTIG-ignition
In LIFTIG ignition the TIG arc is ignited after making
contact between the workpiece and the tungsten
electrode, after which the trigger is activated and the arc is
established by lifting the electrode from the workpiece.
Power reduction
LED ”A” flashes to indicate that the machine has
reduced welding current. The machine monitors
the status of mains voltage and automatically
reduces the maximum welding current both in
MMA (to 120A) and TIG (to 140A) when its value is lower
than 230V-15% (195V), permitting reduced operations in
case of low supply.
Only after the mains has recovered normal levels, it will be
possible to increase the current up to maximum by rotating
the encoder.
Anti-freeze
This machine is provided with an anti-freeze control.
The anti-freeze-control reduces the current when the
electrodes stick to the weld piece. This makes it easier to
break off the electrode and welding can continue.
Reset
It is possible to reset the welding machine to its factory
settings:
• MMA current 80 A
• TIG current 80 A
• Pre-flow 0.2 sec
• Post-flow 6.0 sec
• No slope-up/slope-down
• Base amp 40 %
• Pause time = Pulse time = 0.1 sec
To activate reset, switch off the machine and wait until
the display is extinguished. Press the ”
A
” key while the
machine is switched on and hold it down for 10 seconds,
until the display shows “- - - “. Release the key and turn
the control knob to the right, until the display shows
“F.SE”. Press the “
A
”-key again, and the machine will
return to factory settings.
USER MENU
This menu is intended to permit advanced settings
and controls of machine.
To access the user menu, press the knob
for 3 seconds.
Rotate the encoder to point the desired option and
activate the selection by pressing ”
A
”. To change the
values of parameters press the knob MMA and rotate the
encoder. Press ”
A
” to save the data.
The following diagram display all parameters and options
of menu.
Exit from the USER menu
Open/Close the gas valve in order to purge the
torch, check the gas bottle and pressure reducer.
Press “A” to Open/Close the gas. Exiting the USER menu
will close the gas anyway.
Submenu containing different options:
Exit from the submenu (go back to main
menu)
Panel LOCK
Complete lock of box.
If the panel lock is active, the display will flash
“PA.L.”, when rotating the encoder or pressing
key pads.
0 = unlocked (default setting)
1 = locked
All above settings are not modified via Reset.
15
16
V
S
%
A
14
Control panel
Содержание FOCUS TIG 161 DC PFC
Страница 51: ......
