Cebora SOUND DC 3240/T Manuel D'instructions page 12

the set spot welding time the arc shuts off automatically. To
do the next spot, you must therefore release the torch trig-
ger and press it again.
M - LED - THERMAL PROTECTION
Lights when the operator exceeds the duty cycle or per-
centage intermittence admissible for the machine, and
simultaneously blocks the current output.
NOTE: In this condition the fan continues cooling the
power source.
O - Knob
Normally adjusts the welding current.
Also, if you select a function with the selector switch
R, this knob adjusts its size.
P - Display
Displays the welding current and the settings
selected by means of the push-button R and
adjusted via the knob O.
In the machine blocking procedures (see 2.3.2), it displays:
Three flashing or steadily lit points
The abbreviations E1 E2 E3 E4
The abbreviation H20
N - Display
Normally displays the arc voltage in relation to
the current welding process.
When setting the cooling unit operation, it displays the sta-
tus of the unit.
Q - SELECTOR
Selects and saves programs.
The welding machine can save nine welding pro-
grams P01.....P09, and call them up using this button. A
working program PL is also available.
Selecting
When this push-button is pressed briefly, the display P
shows the next program number after the one being worked
on. If it has not been saved the message will flash, otherwise
it will remain steady.
Saving
Once the program has been selected, hold for more than 3
seconds to save the data. In confirmation, the program num-
ber on the display P will stop flashing
R - SELECTOR
When this button is pressed, the LEDs light in suc-
cession:
Warning: only those LEDs that refer to the chosen welding
mode will light; i.e., in continuous TIG welding the LED T,
representing the pulse frequency, will not light.
Each LED indicates the parameter that may be adjusted by
means of the knob O while the LED itself is lit. Five seconds
after the last variation, the LED involved will shut off; the
main welding current will be displayed, and the correspond-
ing LED X lights.
12
AO - Pre-gas LED
Adjustment 0.05-2.5 seconds. Gas
output time before starting weld-
ing.
(LED L) this LED lights to indicate that the display H displays
the spot welding time that may be adjusted using the knob
O from 0.1 to 3 seconds.
AM - Hot-Start LED
May be selected via the button R only if MMA welding is
selected (LED B).
This LED lights to indicate that the display P displays the
time, expressed in seconds, during which the welding
machine delivers an overcurrent to improve electrode start-
ing. It may be adjusted using the knob O.
AN - Arc-force LED
May be selected via the button R only if MMA welding is
selected (LED B).
It is a percentage of the welding current. The display P dis-
plays its value, and the knob O adjusts it. This overcurrent
essentially aids in the transfer of drops of molten metal.
Y - 10-pin connector
This connector is connected to the remote
controls described in paragraph 4.
A clean contact is available between pins 3
and 6 to signal when the arc is lit (5A 230V).
Z - 1/4 GAS FITTING
This is where the gas hose of the TIG welding
torch is to be connected.
AP - Welding start current LED.
Welding start current. This is a per-
centage of the welding current
(LED X).
S - Slope up LED .
This is the time in which the current,
starting from the minimum, reaches
the set current value. (0-10 sec.)
X - Main welding current LED .
W - Second level of welding or
base current LED.
This current is always a percentage
of the main current.
T - Pulse frequency LED (0.16-
550 Hz).
The peak and base times are equal.
When spot-welding is selected
U - Slope down LED.
This is the time in which the current
reaches the minimum value and the
arc shuts off. (0-10 sec.)
V - Post gas LED.
Adjusts the time gas flows after
welding ends. (0-30 sec.)