CARBONE TIG160PDCHF, Operator'S Manual, Page: 17 / 38

B-3 OPERATION B-3
CONTROLS AND SETTINGS
All operator controls and adjustments are located on the case front of the TIG machine. Refer to Figure B.1
and the corresponding explanations.
FIGURE B.1 CONTROL PANEL
1. FRONT PANEL 2. BACK PANEL
1. power switch 2. 2steps/4steps switch .
3. current regulator 4. indicating light of power
5. warning indicating light 6. (Gas)post flow
7. safety earthing column 8. pulse Freq. regulator
9. Up-slope regulator 10.Down slope regulator
11. gas inlet 12. torch control l (or connect
remote control box)13. output"+"14.output"-"
15. gas outlet 17. fan 18.incoming line of the power
19.Pulse ON/OFF switch 20.MMA/TIG switch
21.indication of welding current
22.over heat indicating light
CONTROL FUNCTIONALITY
1 POWER SWITCH -
Input line switch turns
input power ON or OFF, as indicated by the on or
off status of the front panel digital display (See Item
21).
2 steps/ 4 steps switch
Tig Trigger Sequences -
For the TIG machine AC/DC, TIG welding can be
done in either the 2-step or 4-step mode which is
selected with the Trigger Mode Push Button.
2-Step Sequence
With the Trigger Mode switch in the 2-step position,
the following welding sequence will occur. This
sequence is shown in (2-step diagram 1)
2 STEP DIAGRAM 1
1. Press and hold the Arc Start Switch to start the
sequence.
The machine will open the gas valve to start the
flow of the shielding gas. After a 0.5 second preflow
time, to purge air from the torch hose, the output of
the machine is turned ON. At this time the arc is
started.
After the arc is started the output current will be
increased from the start current to the welding
current. Both the start current and increase, or
upslope time are presettable. The default start
current is 15 amps and the default upslope time is
0.2 seconds.
2. Release the Arc Start Switch to stop welding.
The machine will now decrease the output current
at a controlled rate, or down slope time, until the
Finish current, (also commonly referred to as Crater
Current) is reached and the output of the machine is
turned OFF. Both the Down slope Time and the
Finish Current are can be preset.
After the arc is turned OFF, the gas valve will
remain open to continue the flow of the shielding
gas to the hot electrode and work piece. The
duration of this postflow shielding gas is adjusted by
the Postflow Parameter.
Possible variations of this standard sequence is
shown in (2 step diagram 2). It is possible to press
and hold the TIG torch trigger a second time during
downslope to restart. After the trigger is pressed the
output current will increase to the welding current.
This operation is shown in (2 step diagram 2).
2 STEP DIAGRAM 2
TORCH
BUTTON
OUTPUT
CURRENT
GAS
PRE-FLOW
GAS ON
POST-FLOW
TORCH
BUTTON
OUTPUT
CURRENT
GAS
PRE-FLOW
GAS ON
POST-FLOW