Motor-Driven Generators; General Notes; Welding Mild Steel - Elettro MIG 176 ADJ SYNERGIC Manuel D'instructions

After it has been tripped, wait a few minutes to allow the
power source to cool down.

3.4 MOTOR-DRIVEN GENERATORS

They must have an electronic regulator of the tension, a
power equal to or greater than 4,5 kVA and must not
deliver a voltage greater than 260V.
4 INSTALLATION
The machine must be installed by skilled personnel. All
connections must be made in compliance with current
regulations and in full respect of safety laws (see standards
CEI 26-10 and CENELEC HD 427).
Make sure that the wire diameter corresponds to the one
indicated on the roller, and mount the wire reel. Make sure
that the welding wire passes through the groove in the
small roller.
Before plugging the power cable, make sure that the power
voltage corresponds to that of the welding machine and
that the earth plug is efficient.
Connect the earth clamp G to the part to be welded.
The welding circuit must not be deliberately placed in direct
or indirect contact with the protection wire except in the
workpiece.
If the workpiece is deliberately grounded using the
protection wire, the connection must be as direct as
possible, using a wire at least as large as the welding
current return wire, and connected to the workpiece at the
same point as the return wire, using the return wire clamp
or a second grounding clamp placed next to it.
All precautions must be taken to avoid stray welding
currents.
Turn the machine on using the switch I.
Remove the tapered gas tip by turning it clockwise.
Unscrew the contact tip.
Do not press the torch trigger until you have read the
instructions carefully.
It is important to make sure the machine is turned off
whenever changing the wire reel and wire roller, to prevent
the wire feed motor from starting accidentally.
Press the torch trigger and release it only when the welding
wire comes out.
Welding wire can cause puncture wounds.
Never aim the torch at parts of the body, other people or
metals when loading the welding wire.
Screw the contact tip back on, making sure that the hole
diameter corresponds to the wire used.
Slide the tapered gas welding tip on, always turning
clockwise.
WARNING! ELECTRIC SHOCK CAN KILL.
•
Do not touch live electrical parts.
•
Do not touch the weld output terminals when the unit is
powered.
•
Do not touch the torch and the earth clamp at the same
time.
ATTENTION: The green/yellow wire of the input power
cable must always be connected to the protection lead
(ground of the system).
The yellow/green wire must NEVER be combined with
another phase wire for drawing voltage.
4.1 CONNECTING THE GAS HOSE
• The gas cylinder must be equipped with a pressure
reducer and flow meter.
• Connect the gas hose leaving the back of the machine to
the pressure reducer only after the cylinder is in place.
• Open the gas cylinder and set the flow meter to
approximately 8-10 lt./min.
CAUTION: Make sure the gas used is compatible with the
material to be welded.

4.2 GENERAL NOTES

Before using this welding machine, carefully read the
regulations CEI 26/9 or CENELEC HD 407 and CEI 26/11
or CENELEC HD 433. Also make sure that the insulation
on cables, torch and earth cable is intact.
5 WELDING

5.1 WELDING MILD STEEL

5.1.1 With gas protection.
Either 82% ARGON + 18% CO2 or 100% CO2 may be
used for welding mild steel.
Connect the earth clamp to the piece to be welded.
Open the machine. Connect the earth cable to the negative
(-) terminal and the torch cable to the positive (+) terminal.
Adjust the welding machine by means of knobs B, E and
switch F.
Move the torch near the welding point and press the
trigger.
When you have finished welding, turn off the machine and
close the gas cylinder.
For the correct welding angle see pict. 3.
5.1.2 Without gas protection.
Use only flux cored wire of diameter 0.9 that complies with
the standard AWS AS.20 E71 TII or E71 TGS, suitable for
use without gaseous protection.
Connect the earth cable clamp to the piece to be welded.
Open the machine. Connect the earth cable to the positive
(+) terminal and the torch cable to the negative (-) terminal.
Adjust the welding machine by means of knobs B, E and
switch F.
After connecting the cables, follow the instructions given in
paragraph 5.1.1.
NOTE: For compact, well-protected welds always work
from left to right and from top to bottom.
Remove all waste after each welding operation.
For the correct welding angle see pict. 3.
6 MAINTENANCE AND CHECKS
6.1 GENERAL NOTES
• Turn off the welding machine and unplug the power cord
from the socket before each checking and maintenance
operation.
• Moving parts can cause serious lesions
• Keep away from moving parts.
• INCANDESCENT SURFACES can cause serious burns.
• Let the unit cool before servicing.
• Periodically remove any dust or foreign matter that may
have deposited on the transformer or diodes; to do so, use
a jet of clean, dry air.
• When replacing the wire roller, make sure the groove is
aligned with the wire and corresponds to the diameter of
the wire used.
• Always keep the interior of the gas nozzle clean to avoid
metal bridges created by welding dross between the gas
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