Elettro 207 Manuel D'instructions page 7

INSTRUCTION MANUAL FOR WIRE WELDING MACHINES
1 GENERAL DESCRIPTION
1.1 SPECIFICATIONS
This welding machine is a semiautomatic, constant
voltage generator. It is possible to weld mild steel,
stainless steel and aluminium.
1.2 EXPLANATION OF TECHNICAL SPECIFICATION
Art. Article number that must be stated when
asking for information or servicing related
to this machine.
Single-phase Transformer - Rectifier
Three-phase Transformer - Rectifier
External characteristics of the unit.
U Secondary no-load voltage.
o
X The duty-cycle expresses the percentage
of 10 minutes during which the welding
machine can operate at a determined
current level without overheating:
e.g. X = 60% at I
This means that the welding machine can
weld with a current I
minutes out of 10, i.e. 60%.
I Welding current
2
U Secondary voltage with welding current I
2
U Nominal supply voltage at the rated
1
frequency.
I Input current at the corresponding welding
1
current I
2
IP 21 Grade of protection of the case.
Grade 1 as a second digit means
that this unit is not fit for working
in the rain.
Fit for working in high-risk areas.
Suitable for MIG-MAG welding.
1.3 DESCRIPTION OF PROTECTION
This unit is protected by a normally closed thermostat
placed on the power transformer.
When the thermostat intervenes, the machine stops
welding, while the motor-driven fan continues to work.
Wait a few minutes to allow the generator to cool down.
2 INSTALLATION
3.1 PRECAUTIONS
− Read carefully the instructions for the machine set-
up and start-up.
WARNING: ELECTRIC SHOCK CAN KILL!
This machine must be installed by skilled personnel.
−
= 100 A.
2
= 100A for 6
2
2
Make sure that the input power plug has been
−
disconnected before inspecting, repairing, or servicing.
Connect the yellow-green wire to a good electrical
−
ground.
2.2 SET-UP
− Unpack the machine and place it in a properly
ventilated area, possibly not dusty, making sure that
airflow on the cooling vents is not obstructed.
WARNING: RESTRICTED
overheating and possible damage to internal parts.
Maintain at least 20 inches (500 mm) of free space
−
on all sides of the unit.
Do not place any filtering device over the intake air
−
vents of this power source. The warranty is void if any
type of filtering device is used.
2.3 START-UP
This unit must be installed by skilled personnel. All
fittings must be in conformity with the existing safety
standards. (See CEI standards 26-10 - CENELEC HD
427).
• Install the components supplied with the welding
machine (fig.3).
•
Connect the welding torch (52).
•
The torch on item 214 has to be connected as
follows :
Take the end of the torch cable and pass it through
−
the circular hole on the machine's front panel inserting
the wire guide into the wire feeder. Tighten the Allen
screw that is on the external part of the wire feeder
using the Allen wrench that is provided with the
machine.
After having done this it is necessary to connect the
−
gas hose that comes out from inside the machine to the
torch's gas fitting. Lastly, the wires that come out from
inside the machine must be connected to the wires that
come out from the end of the torch cable. To make this
connection fast and easy, quick connecting fastons
have been provided.
− Check that the wire diameter corresponds to that
shown on the drive roll and mount the wire spool.
Make sure that the wire goes into the groove of the
−
drive roll (B fig.2).
Before connecting the power supply cable (30) ensure
that mains voltage corresponds to the machine voltage
and that the earth plug is efficient.
The connection voltage can be changed on the
threephase machine by following the instructions in
figure.
− Connect the ground clamp (42) to the workpiece.
− Turn the machine on (1).
Remove the taper gas nozzle (51) by rotating it
−
clockwise.
Unscrew the contact tip (50).
−
Press the torch push button (46) and release it only
−
when the wire comes out.
Welding wire can cause puncture wounds.
- Do not press gun trigger until instructed to do so.
- Do not point gun toward any part of the body, other
people, or any metal when threading welding wire.
− Tighten the contact tip (50) and make sure that the
hole diameter corresponds to the wire being used.
Reinstall the taper gas welding nozzle (51), rotating
−
it clockwise.
AIRFLOW causes
5