Tig Welding; Mma Welding - Cebora 514 Manuel D'instructions

g) Continuous TIg welding.
the arc strikes by creating a short-circuit between
the electrode and the workpiece; the welding cur-
rent is adjusted by means of the knob D.
h) Pulsed TIg welding.
the arc strikes by creating a short-circuit between
the electrode and the workpiece, the peak current
is adjusted by means of the knob D, the base current is
adjusted by means of the knob C, the frequency is adju-
sted by means of the knob A.
i) Display.
displays the value of the amperes or volts
based on the selections made using the
button O. in addition, it displays the values
set using the knobs A and C.
l) Connector
to which the remote controls are connected
m) LED
When lit, it indicates that display I is showing the wel-
ding voltage. activated by means of selector switch O.
n) LED
When lit, it indicates that display I is showing the wel-
ding current. activated by means of selector switch O.
o) Selector switch.
pressing this key selects the leds M and N.
p) On/Off switch.
q) Power cord.
r) (-) Output terminal.
s) (+) Output terminal.

3.3 MMA wELDINg

• make sure that the switch (P) is in position 0, then con-
nect the welding cables, matching the polarity required
by the manufacturer of the electrodes you will be using.
very important: connect the terminal of the ground-
ing cable to the workpiece, making sure that contact is
good to ensure smooth equipment operation and avoid
voltage dips with the workpiece.
• do not touch the torch or electrode clamp simultane-
ously with the mass terminal.
• turn the machine on using the switch (P).
• press the selector switch E until the led f lights.
• adjust the current based on the electrode diameter,
welding position and type of joint to be made.
• also adjust the hot-start using the knob A (recom-
mended setting 15) and the arc-force using the knob C
(recommended setting 30 for basic electrodes).
always remember to shut off the machine and remove the
electrode from the clamp after welding.
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3.4 TIg wELDINg

• this welding machine is suitable for welding the follow-
ing materials using the tig procedure: stainless steel,
iron, copper.
• make sure that the switch (P) is in position 0.
• connect the mass cable connector to the positive pole
(+) of the welding machine, and the clamp to the work-
piece as close as possible to the welding point.
• connect the power connector of the tig torch to the
negative pole (-) of the welding machine.
• connect the gas hose to the outlet of the pressure reg-
ulator, connected to an argon cylinder.
• use a tungsten electrode with 2% thorium (red stripe).
• do not touch the electrode and mass terminal simulta-
neously.
• turn the machine on using the switch (P).
• use the selector switch E to set the type of tig weld-
ing, continuous or pulsed.
• strike the arc by contact using a firm, rapid stroke.
• Remember to shut off the machine and close the
gas cylinder valve when you have finished welding.
3.4.1 Preparing the electrode
grind the electrode tip so that it has vertical grooves as
shown in the figure.
• to profile the tungsten, use a hard, fine-grained abra-
sive grinding wheel used solely for this purpose.
• Be careful with metal particle.
4 ACCESSORIES.
this welding machine is intended for use with the follow-
ing accessories:
Art 181. foot control to adjust the welding current.
equipped with 5m of cable and on-off switch.
Art 187+ extension art 1192. for current adjustment
during mma welding.
Art 1284.05. clamp + earth 35mm2 for mma welding.
(art. 514).
Art 1286.05. clamp + earth 50mm2 for mma welding.
(art. 519).
Art 1432. trolley.