Cebora 366 Manual De Instrucciones página 17

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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
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
the torch trigger once again. The LED AG will light, and the
LED AD will go off. To stop welding at any time, simply hold
down the torch trigger for more than 0.7 seconds, then
release. The current begins to fall to zero within the previ-
ously set "slope down" time interval (LED AC lit).
If you press and immediately release the torch trigger dur-
ing the "slope down" phase, you will return to "slope up"
if it is set to greater than zero, or to the lesser current
value of those set.
NOTE: The expression "PRESS AND IMMEDIATELY
RELEASE" refers to a maximum time of 0.5 seconds.
AA - TIG welding LED with two levels of cur-
rent.
This program differs from the previous one because when
the arc lights the current always rises to the first setting,
LED AI lit, but the operator cannot maintain it and the
slope-up time begins immediately (LED AH).
Crater Arc.
In the second functions this software is available which
was created to close the final crater by setting a given
current and its duration.
This function can be used in TIG AC or DC modes, both
manual and automatic (Fig. 3).
To activate the function proceed as follows:
• Press knob AQ and while holding it down press knob
AP.
• Hold it down until the display O shows the abbrevia-
tion H2O.
• Press knob AP until the display O shows the abbrevi-
ation CrA(Crater Arc).
• The display U shows the abbreviation OFF .
• Turn knob Y until the display U shows the abbrevia-
tion On.
• Turn the knob Y, the display O shows the abbreviation
CrC (crater current – corrente di cratere) and the dis-
play U shows 50; this is the crater current percentage
value related to the welding current. 50%. manufac-
turer' setting.
Range from 1 to 100%.
• Turn knob Y, the display O shows the abbreviation
CrC (crater current time – tempo corrente di cratere).
• knob Y is used to set this value which is shown on dis-
play U. 0.5 seconds - manufacturer' setting.
Range 0.1 to 30.0 seconds.
The fitting range between the main power and the
crater current is controlled by the AC «slope down»
led.
Y - Knob
Normally adjusts the welding current.
Also, if you select a function with the selector
switch AP, this knob adjusts its size.
Fig. 3
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