General Notes; Tig Welding - Elettro TIG 157 Betriebsanleitung

M LED
Second level of current in dual level mode.
N LED
Slope down. This is the time during which the current reaches its
minimum value and the arc is extinguished (0-10 sec.).
O LED
Post gas. Adjusts the gas flow time at the end of welding (0-30
sec.).
P – Knob.
Adjusts the welding current – G LED.
In addition, combined with the I push-button, you may:
- adjust the "slope up" H
- adjust the base pulse current F
- adjust the pulse frequency L
- adjust the second level of current in dual level M
- adjust the "slope down" N
- adjust the post gas O
R LED – Welding machine block (see 2.3.2)
S LED – Thermal protection.
It lights when the operator exceeds the duty cycle or percentage
intermittence allowed for the machine and simultaneously locks
the current output.
N.B. Under this condition the fan goes on cooling the power
source.
Q – Display
Displays the welding current and the settings which were
selected via the I push-button and adjusted via the P knob.
W – Selector switch for programs in memory.
Selects and saves the programs in memory.
The welding machine can save nine welding programs
P01.....P09 and call them up via this button. A working program
PL is also available.
Selecting
When this push-button is pressed briefly, the Q display shows
the program number next to the one in use. If this has not been
saved, the message will flash, otherwise it remains steady.
Saving
Once the program has been selected, hold down for more than 3
seconds to save the data in memory.
To confirm this, the program number on the Q display will stop
flashing
Y – 10-PIN CONNECTOR.
The following remote controls are to be connected to this
connector:
a) foot control
b) torch with start button
c) torch with potentiometer
d) torch with up/down
e) remote control, etc.
X – ¼ gas fitting.
This is where the gas hose of the TIG welding torch is to be
connected.
A1
Negative output terminal (-)
A2
Positive output terminal (+)
A3 – Switch.
Turns the machine on and off.
A4 – Gas intake fitting.
A5 – Power supply cable.

3.3 GENERAL NOTES

Before using this welding machine, carefully read the
standards CEI 26/9 - CENELEC HD 407 and CEI 26.11 -
CENELEC HD 433. Also make sure the insulation of the
cables, electrode clamps, sockets and plugs are intact, and
that the size and length of the welding cables are compatible
with the current used.
3.4 MMA WELDING (MANUAL METAL ARC)
- This welding machine is suitable for welding all types of
electrodes, with the exception of cellulosic (AWS 6010)*.
- Make sure that the switch A3 is in position 0, then
connect the welding cables, observing the polarity
required by the manufacturer of the electrodes you will
be using; also connect the damp of the ground cable to
the workpiece, as close to the weld as possible, making
sure that there is good electrical contact.
- Do NOT touch
simultaneously with the earth clamp.
- Turn the machine on using the switch A3.
- Select the MMA procedure by pressing the button C:
LED A lit.
- In MMA procedure the cooling fan is always on.
- Adjust the current based on the diameter of the
electrode, the welding position and the 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

This welding machine is suitable for welding stainless steel,
iron, or copper using the TIG procedure. Connect the earth
cable connector to the positive pole (+) of the welding
machine, and the clamp to the workpiece as close as
possible to the welding point, making sure there is good
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the torch or electrode damp