Migatronic PILOT 1800 E Manuel D'instruction page 18

Mains error
The mains error indicator is illuminated if the
mains voltage is too high or low. The indicator
remains illuminated 5 seconds after the mains error
is corrected/removed.
Welding process
This display is used to select
the welding process, e.g. MMA electrode or TIG.
The function is fixed during welding, and shift from
TIG to MMA is not possible before the post-flow
has been finished.
MMA electrode
MMA electrode welding has been selected.
TIG
TIG welding has been selected.
Function of the torch trigger
(The trigger method)
This display is used to decide whether the start/stop
method of the TIG welding process is to be two-
times, four-times (latching), or spot. Welding process
means the phases: pre-flow, slope-up, welding with
adjusted current, if necessary, reduced current,
slope-down and post-flow. 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. Releasing the torch trigger during gas pre-
flow activates the slope-up period. If the torch trigger
is released during the slope-up period welding con-
tinues with the adjusted welding current. In order to
stop the welding process the trigger must be pressed
again after which the slope-down period begins. The
slope-down period can be stopped by releasing the
trigger.
Amp
slope-up
Set welding
current
Spot
The welding process begins by pressing the torch
trigger. Welding stops automatically, depending on
the time set in spot time.
slope-down
time
trig down ( ) / up ( )
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Amp setting function
The AMP keypad is used to
select the method by which the required welding
current shall be established. This welding current is
then shown in the display and cannot be changed
during the welding process.
Internal adjustment
The control knob positioned below the digital
display is used to set the current.
External adjustment
Current setting to be by means of a Migatronic
remote control unit. The remote control unit is
connected to a plug positioned on the rear of the
machine (not standard equipment).
Torch adjustment
Current setting to be by means of the current
control knob located in the handle of a Migatronic
dialog torch, if a dialog torch is used. The maximum
current is set with the control knob on the front panel.
The torch control is used to reduce the current from
the maximum set current to the minimum current.
of ignition for TIG welding: High-frequency (HF) and
LIFTIG ignition. The method of ignition cannot be
changed during the welding process.
Two-stroke
This symbol means contact-free striking.
The arc is established in the following way:
1) The torch is placed so that the Tungsten elec-
trode is quite close to the welding spot (1 or 2
mm).
2) The torch trigger is activated, and the high
voltage generator of the machine will produce a
voltage impulse that ignites the arc. The welding
process has started. The welding process will
stop when the torch trigger is deactivated. The
arc will extinguish after the period of slope-down
time. The torch is held at the welding spot until
after the period of gas post-flow time in order to
protect the welding spot against oxidation.
Four-stroke
This symbol means contact-free striking.
The arc is established in the following way:
1) The torch is placed so that the Tungsten elec-
trode is quite close to the welding spot (1 or 2
mm).
2) The torch trigger is activated, and the high
voltage generator of the machine will produce a
voltage impulse that ignites the arc. The torch
trigger is deactivated. The welding process will
stop when the torch trigger is reactivated.
Ignition of TIG welding
It is possible to choose be-
tween two different methods