Cebora 351 Manual De Instrucciones página 14

D
C
AX
E
AV
B
AW
A
AU
AT
AS
AA
AQ
Fig. 2
LED AU:
PULSE TIG welding with contact starting
TIG
(striking). The operating logic is the same as
described for LED B.
Program key AR.
One of the LEDs G, F, W, X, Z, or AA lights when
selected.
LED G:
Spot-welding (Manual).
After selecting the welding current (LED AG) and the
spot welding time (LED AE) using the selector switch
AP, set the values using the knob Y.
This welding mode is only used if continuous welding is
selected and high-frequency start is used (LED E lit).
The operator presses the torch trigger, the arc lights and
shuts off automatically after the pre-set spot welding
time. To do the next spot, you must therefore release the
torch trigger and press it again. Range from 0.1 to 30
sec.
F - 2-stage TIG welding LED (manual)
When the torch trigger is pressed, the current begins to
increase over the previously set "slope up" time, until it
reaches the value set by means of the knob Y. When the
trigger is released, the current begins to drop over the
previously set "slope down" time, until it returns to zero.
In this position, you may connect the pedal control
accessory ART. 193.
W - 4-stage TIG welding LED (automatic).
This program differs from the previous one in that the arc
is both started and shut off by pressing and releasing the
14
Z X W F G L
AP AR AO AY AN H AM
I M S N O Y P
R AL AI AH
torch trigger
X - Special program LED
To light the arc, press the torch trigger and hold it down;
the current begins to increase at a fixed rate. If the torch
trigger is released, the current immediately rises to the
welding value (LED AG). To stop welding, press the torch
trigger and hold it down; the current begins to drop at a
fixed rate. The current immediately returns to zero if the
trigger is released.
Z - four-stage TIG welding LED with four lev-
els of current (automatic).
To set the three minimum welding currents, proceed as
follows:
Press the selector switch AP until the LED AG lights, then
adjust the maximum current value using the knob Y.
Press the selector switch AP until the LED AD lights, then
adjust the intermediate current value using the knob Y.
Press the selector switch AP until the LED AY lights, then
adjust the starting current value using the knob Y.
When the arc strikes, the current reaches the first setting,
LED AI lit. The operator may maintain this current as long
as desired (for example until the part is heated). Pressing
and immediately releasing the torch trigger causes the
current to pass from the first to the second current over
the "slope-up" time (LED AH); the LED AG lights once the
welding current has been reached.
Should it be necessary to reduce the current during weld-
ing, without shutting off the arc (for instance when chang-
ing the welding material or working position, moving from
horizontal to upright, etc.), press and immediately release
the torch trigger: the current will switch to the second
value selected, the LED AD will light and AG will go off.
To return to the previous main current, press and release
T U Q
AF AE AD AC
AG
AB