Tig Welding - Cebora SOUND AC-DC 2330/M Manual De Instrucciones

welding position and type of joint to be made.
- Always remember to shut off the machine and remove
the electrode from the clamp after welding.

3.5. TIG WELDING

If the TIG AC is selected you can weld aluminium,
aluminium alloys, brass and magnesium; if the TIG DC
mode is selected you can weld stainless steel,
iron and copper.
Connect the mass cable connector to the positive pole
(+) of the welding machine, and the terminal to the work-
piece as close as possible to the welding point, making
sure there is good electrical contact.
Connect the power connector of the TIG torch to the neg-
ative pole (-) of the welding machine.
Connect the torch connector to connector BC of the
welding machine.
Connect the fitting of the torch gas hose to the BD ma-
chine connector and the gas hose coming from the cyl-
inder pressure regulator to the gas fitting BH.
3.5.1 Cooling unit(optional for Art. 1341).
If you use a water cooled welding torch, use the cooling unit.
Insert the torch cooling hoses into the fittings of the cooling
unit, being careful to correctly place the delivery and return.
3.5.1.1 Description of protections.
- Coolant pressure protective device.
This protection is achieved by means of a pressure
switch, inserted in the fluid delivery circuit, which con-
trols a micro switch. Low pressure is indicated by the
flashing message H2O on the display U.
3.5.1.2 Instructions
Unscrew the cap and fill the tank (the unit is supplied with
approximately one liter of fluid).
It is important to periodically check, through the slot ,
that the fluid remains at the "max" level".
As a coolant, use water (preferably deionised) mixed with
alcohol in percentages defined according to the following
table:
temperature
-0°C up to –5°C
-5°C up to –10°C
If the pump turns with no coolant present, you must re-
move all air from the tubes.
In this case shut off the power source, fill the tank, con-
nect one hose to fitting (
the tank.
Insert the pressure switch connector and the power cord
into the sockets BR and BQ.
- Turn the power source on for approximately 10 to 15
seconds and the N connect the hoses again.
Turn on the machine.
See chapter " SERVICE FUNCTIONS MENU " to select
the cooling unit operation mode.
3.5.2 Start-up
Do not touch live electrical parts and output terminals
when the machine is powered.
16
Water/alcohol
4L/1L
3.8L/1.2L
) and insert the hose end into
At first start-up, select the operation mode by means of
button E and the welding parameters by means of P but-
ton and knob AA.
Warning! Settings for LEDs AO = start, Q = Hz, R =
wave balance can be selected in TIG AC mode only.
The inert gas flow must be set at a value (liters per minute)
approximately 6 times the electrode diameter.
If gas-lens type accessories are used, the gas delivery
must be reduced by approximately 3 times the electrode
diameter. The ceramic nozzle diameter must be between
4 and 6 times the electrode diameter.
• When you have finished welding, do not forget to
shut off the machine and close the gas cylinder valve
.
3.5.3 Preparing the electrode.
Be especially careful when preparing the electrode tip.
WARNING: LOOSE HOT METAIL PARTS may cause per-
sonal injuries, fires and damage the equipment; TUNG-
STEN CONTAMINATION may lower the quality of the
weld.
Use only a grinder equipped with adequate safety guards
to shape the tungsten electrode and wear protections
for face, hands and body.
To shape the tungsten electrodes, use a hard, fine-
grained abrasive grinding wheel used solely for this pur-
pose.
Grind the tungsten electrode tip in a conical form and a
length 1.5 to 2 times the electrode diameter (fig. 3).
Fig. 3
3.6. SAVING
A long or short pressure of button AQ is used for
programs to be saved, their restoring and saving.
Short pressure to select, long pressure to save.
Programs to be saved (memories) are displayed by
display U: flashing are free, non flashing contain al-
ready stored data.
3.6.1. Saving data from the PL program
When using the machine the first time
Work programs and memories (P01... etc.) are always
displayed by display U, their selection is obtained by a
short pressure of button AQ.
Once all the parameters to be saved are decided, press
shortly button AQ, the display U will show the flashing
abbreviation P01 and display O will show three lines (---
); hold down the button AQ for more than 3 seconds, until
d