CARBONE Digi-Tig250ACDC, Operator'S Manual, Page: 19 / 43

B-5 OPERATION B-5
2. Release the TIG torch trigger to start the main
part of the weld.
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.
3. Press and hold the TIG torch trigger when the
main part of the weld is complete.
The machine will now decrease the output current
at a controlled rate, or down slope time, until the
Finish current is reached. Both the Down slope
Time and the Finish Current are presettable. This
Finish current can be maintained as long or as short
as necessary.
4. Release the TIG torch trigger.
The output current of the machine will turn OFF and
the gas valve will remain open to continue the flow
of the shielding gas. The duration of this postflow
time is adjusted by the Postflow parameter. This
operation is shown in (4 step diagram 1).
4 STEP DIAGRAM 1
Possible variations of this standard sequence are
shown below. By releasing and re-pressing the TIG
torch trigger during the downslope step, the output
will immediately drop to and hold at the Finish
Current. Releasing the trigger will turn off the output
and begin postflow. This operation shown in
(4 step diagram 2)
*note
：
13. Data Display Adjustment Knob
The control knob is used increase or decrease parameter
values. To increase adjustment speed, push in on the
knob while turning.
15. output"+"
（
Electrode Connection (Positive)
）
For quick disconnect system using Twist-Mate
cable plugs
16. output"-"
（
Electrode Connection (Negative)
）
This quick connect Twist-Mate receptacle provides
electrical connection to the electrode holder and cable for
Stick welding and connection for the TIG torch when TIG
welding.
17. argon out
connected gas pipe of torch
18. REMOTE RECEPTACLE
*note
(OR argon arc
control)
Provides for connection of remote control and/or
arc start switch in TIG Mode: Plugging a remote
current control (Adjustable foot control) into this
receptacle automatically switches the output control
from the panel Max Output Control (See Item 3) to
the remote control.
The connected remote control will then control
the output current between the Min. range of the
machine and the setting of the panel Max Output
Control.
19. Amp Adjustment slector
(remote control)
panel/ pedal /finger torch
20. power switch
It serves as the On/Off switch for the welder.
Always turn the welder on and off by the switch first
before using any disconnect.
21.argon inlet
connected gas pipe of flow meter
22.power supply
connected main supply
23. safety earthing column
The earthing must be made according to the national
regulations. Make sure that the supply mains and the
earthing are sufficient and adequate
24.fan
when power switch on, the cooling fan runs
TORCH
BUTTON
OUTPUT
CURRENT
GAS
PRE-FLOW
GAS ON
POST-FLOW