Description Of Protective Devices; Description Of The Equipment - Cebora POWER TIG 1665 DC HF Manual De Instrucciones

equipment as suitable for use outdoors in the
rain.
C: The additional letter C means that the equip-
ment is protected against access to the live parts
of the power circuit by a tool (diameter 2.5 mm ).
S
Suitable for hazardous environments.
NOTES: The welding machine has also been designed for
use in environments with a pollution rating of 3.
(See IEC 664).

2.3 DESCRIPTION OF PROTECTIVE DEVICES

2.3.1. Thermal protection
This machine is protected by a temperature probe, which
prevents the machine from operating if the allowable tem-
peratures are exceeded. Under these conditions the fan
keeps running and the LED M lights.
2.3.2. Block protections (Art. 272 - 277)
This welding machine is equipped with various safety
devices that stop the machine before it can suffer dam-
age.
The machine stop is signalled by the flashing red LED (N).
When this occurs, it signals:
1) During the start-up phase, the power status of the
machine.
2) After the start-up phase, incorrect supply voltage.
3) With the machine running, that the voltage has fallen
below 118V.
4) With the machine running, that the supply voltage is
above 280V.
5) During welding, that the voltage exceeds 300V.
To restore operation, check the voltage. Then shut off the
AC switch, wait 5 seconds, and switch it on again. If the
problem has been corrected, the welding machine will
begin operating again.
NOTE: If the supply voltage is below 170V at start-up,
no LED will light and the fan is powered.
If the message E2 appears on the display, the
machine requires technical intervention.
2.3.3. Block protections (Art. 278)
THE WELDING MACHINE IS NOT PROTECTED FOR
VOLTAGES GREATER THAN 270V.
This welding machine is equipped with various safety
devices that stop the machine before it can suffer dam-
age.
The machine stop is signalled by the flashing red LED (N).
When this occurs, it signals:
1) During the start-up phase, the power status of the
machine.
2) After the start-up phase, incorrect supply voltage.
3) With the machine running, that the voltage has fallen
below 70V (U = 115V), 135V (U
1
4) With the machine running, that the supply voltage is
above 130V (U = 115V).
1
5) During welding, that the voltage exceeds 300V.
To restore operation, check the voltage. Then shut off the
AC switch, wait 5 seconds, and switch it on again. If the
problem has been corrected, the welding machine will
begin operating again.
NOTE: If the supply voltage is below 95V (U
180V (U = 230V) at start-up, no LED will light and the
1
fan is powered.
= 230V).
1
= 115V),
1
If the message E2 appears on the display, the
machine requires technical intervention.
2.3.4 Motor-driven generators
These must have a power equal to or greater than 6KVA,
and must not deliver a voltage greater than 260V.
3 INSTALLATION
Make sure that the supply voltage matches the voltage
indicated on the specifications plate of the welding
machine.
When mounting a plug, make sure it has an adequate
capacity, and that the yellow/green conductor of the
power supply cable is connected to the earth pin.
The capacity of the overload cutout switch or fuses
installed in series with the power supply must be equiva-
lent to the absorbed current I1 of the machine.
WARNING! Extension cords of up to 30m must have a
cross-section of at least 2.5 mm2.
3.1 START-UP
Only skilled personnel should install the machine. All con-
nections must be carried out according to current regula-
tions, and in full observance of safety laws (regulation CEI
26-10 - CENELEC HD 427).

3.2 DESCRIPTION OF THE EQUIPMENT

A - Procedure and mode selector switch
This push-button selects the welding procedure
(MMA or TIG) and mode.
In TIG mode there will always be two LEDs lit: one indi-
cating HF or striking start mode, and the other indicating
continuous or pulse mode with 2- or 4-stage command.
The selection changes each time the button is pressed.
The LEDs light alongside the various symbols to display
your choice.
B - LED. MMA welding (Manual Metal Arc)
This machine can weld all types of covered electrodes*
except for cellulosic.
In this position, only the knob O is enabled, to adjust the
welding current.
C - LED. TIG welding with arc started with-
out high frequency.
To light the arc, press the torch trigger and touch the
tungsten electrode to the workpiece, then lift it. This
move must be quick and decisive.
D - LED. TIG welding with arc started with
high frequency.
To light the arc, press the torch trigger: a high volt-
age/frequency pilot spark will light the arc.
E - LED. Continuous 2-stage TIG welding
(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 O. When the
trigger is released, the current begins to drop over the
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