Elettro CF MMA 770, Instruction Manual

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INSTRUCTION MANUAL FOR ARC WELDING MACHINE
1 GENERAL DESCRIPTIONS
1.1 SPECIFICATIONS
Before using this device all people authorised to its
use, repair or inspection, should read the book
“Safety rules for using machines” and the
“Instruction manual” specific for every machine.
Contact your distributor if you have not understood
some instructions.
This manual has been prepared in order to instruct the
personnel assigned to the installation, to the use and to
the repair or control of the arc-welding machine. This
welder is an alternate current generator designed for
welding with rutile coated electrodes.
If the machine is provided with a supplementary 70V
output, it will be able, in this position, to weld basic
electrodes for alternating current.
For any requests of information, please always state the
item and the serial number of the welding machine.
1.2 TECHNICAL DATA DESCRIPTION
IEC 974.1.......... This machine is manufactured
EN
60974.1 according to these international
standards.
Art................... Article number, which must be stated
for any demands relating to the
welding machine.
.. Single-phase arc welding transformer.
................... Dropping characteristic.
......... Suitable for manual welding with
coated electrodes.
I
2
..................... Welding current.
U
2
.................... Secondary voltage with welding current
I
2
.
U
o
.................... Secondary no-load voltage.
I
1
..................... Absorbed current at the corresponding
welding current I
2
.
U
1
.................... Nominal input voltage.
50Hz - 60Hz.... 50 or 60 Hz supply.
X..................... Duty cycle percentage. The duty cycle
expresses the percentage of 10
minutes in which the welding machine
can operate at a determined current,
without over-heating.
IP 21................ Grade of protection of frame. Grade 1
as a second number means that this
unit is not fit to work outside under the
rain.
NOTES : In addition, the welding machine has been
designed to work in areas with grade 3 of pollution (see
IEC 664).
1.3 BEFORE CONNECTING THE WELDING MACHINE
Before connecting and switching on the unit follow all
safety rules and instructions as indicated in this manual.
Make sure that the airflow on cooling slots is not
obstructed and then proceed as follows :
1) Unpack the machine.
2) Take care that the unit is not placed before a wall or
in a position which might cut off the air; moreover, do
not cover the unit's source with plastic materials,
metal or paper sheets because they cause the
decrease of the airflow.
3) Make sure that the air temperature does not exceed
+40°C.
4) Do not place any filtering device over the intake air
passages of this welding machine.
Warranty is void if any type of filtering device is used.
2 INSTALLATION
2.1 SET-UP
All connections must be made in compliance with current
regulations and in full respect of safety laws (see
CENELEC HD 427 standard).
Assemble the parts supplied with the welding machine.
To lift the machine use the two upper eyebolts, placing
the ropes as shown in fig.1.
The handle must
NOT be used for lifting.
Fig. 1