CARBONE TIG160PDCHF, Руководство оператора, Страница: 18 / 38

B-4 OPERATION B-4
4-Step Sequence
With the 4-step Selected, the following welding
sequence will occur.
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 at
the Start current. This condition can be maintained
as long or as short as necessary.
If the Start current is not necessary, do not hold the
TIG torch trigger as described at the beginning of
this step. Instead, quickly press and release the
trigger. In this condition, the machine will
automatically pass from Step 1 to Step 2 when the
arc is started.
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)
3. welding current regulator
Regulating the knob, It can be selected
between 5A TO 160A.
4.indicating light of power
Turn power on, it will illuminate indicating .
5. indicating light of over heat
-If the welder overheats due to blocked air flow,
high ambient air temperature, or exceeded duty
cycle, an internal thermostat will open disabling the
welding output and this yellow light will illuminate.
The cooling fans will continue to run to cool the unit
during this time. The light will go out when the unit
cools and the thermostat resets. Once the light
goes out, the machine will again become available
to weld.
6.post flow time regulator
Sets the TIG mode shielding gas post flow time
over the range of about 1 to 10 seconds after the
arc is shut off.
7.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
8.pulse Freq. regulator
Regulating the knob, It can be selected
between 0.5Hz TO 25Hz.
9.current up-slope time regulator
Regulating the knob, It can be selected
between 0s TO 5s
10.current down-slope time regulator
Regulating the knob, It can be selected
between 0s TO 5s.
11.argon inlet
connected gas pipe of flow meter
TORCH
BUTTON
OUTPUT
CURRENT
GAS
PRE-FLOW
GAS ON
POST-FLOW