3
B. Drive rolls can injure fingers.
C. Welding wire and drive parts are at welding voltage
during operation — keep hands and metal objects
away.
1 Electric shock from welding electrode or wiring can
kill.
1.1 Wear dry insulating gloves. Do not touch electrode
with bare hand. Do not wear wet or damaged gloves.
1.2 Protect yourself from electric shock by insulating
yourself from work and ground.
1.3 Disconnect input plug or power before working on
machine.
2 Breathing welding fumes can be hazardous to your
health.
2.1 Keep your head out of fumes.
2.2 Use forced ventilation or local exhaust to remove
fumes.
2.3 Use ventilating fan to remove fumes.
3 Welding sparks can cause explosion or fire.
3.1 Keep flammable materials away from welding.
3.2 Welding sparks can cause fires. Have a fire extingui
-
sher nearby and have a watchperson ready to use it.
3.3 Do not weld on drums or any closed containers.
4 Arc rays can burn eyes and injure skin.
4.1 Wear hat and safety glasses. Use ear protection and
button shirt collar. Use welding helmet with correct
shade of filter. Wear complete body protection.
5 Become trained and read the instructions before
working on the machine or welding.
6 Do not remove or paint over (cover) label.
2 GENERAL DESCRIPTIONS
2.1 SPECIFICATIONS
The MultiMig 521 is an equipment suitable for synergic
pulsed MIG/MAG, synergic not pulsed MIG/MAG and
conventional MIG/NAG welding, developed with inverter
technology. The power source is equipped with a 2-roller
wire feeder.
This welding machine must not be used to defrost pipes.
2.2 EXPLANATION OF TECHNICAL SPECIFICATIONS
N°.
Serial number. Must be indicated on any
request regarding the welding machine.
Single-phase static transformer-rectifier
frequency converter.
MIG Suitable for MIG-MAG welding.
U0.
Secondary open-circuit voltage.
X.
Duty cycle percentage. The duty cycle
expresses the percentage of 10 minutes
during which the welding machine may run
at a certain current without overheating.
I2.
Welding current
U2.
Secondary voltage with current I2
U1.
Rated supply voltage
1~ 50/60Hz 50- or 60-Hz single-phase power supply.
I1 Max
Max. absorbed current at the corresponding
current I2 and voltage U2.
I1 eff
This is the maximum value of the actual
current absorbed, considering the duty
cycle. This value usually corresponds to the
capacity of the fuse (delayed type) to be used
as a protection for the equipment.
IP21S
Protection rating for the housing.
S
Suitable for use in high-risk environments.
NOTE: The welding machine has also been designed for
use in environments with a pollution rating of 3.
(See IEC 60664).
2.3 PROTECTIONS
2.3.1 Block protection
In the event of a malfunction, a flashing number may
appear on the display
AM
, with the following meaning:
52 = Start button pressed during start-up.
53 = start button pressed during thermostat reset.
56
=
Extended short-circuit between the welding
electrode and the material to be welded.
Shut the machine off and turn it back on. If different
numbers appear on the display, contact technical service.
2.3.2 Overload cut-out
This machine is protected by a thermostat, which prevents
the machine from operating if the allowable temperatures
are exceeded. In these conditions the fan continues to
operate and the display
AM
flashes the abbreviation “tH.”
3 DESCRIPTION OF POWER SOURCE
(Fig. 1)
A – Socket (-):
this is where the earth cable is to be
connected.
B
–
Central adapter
: Connect the welding torch.
C
–
Connector
: For connecting remote controls and the
welding control cable
Push–Pull (EL900005).
F
- Connector : Connector type DB9 (RS232 serial line) to
use for updating the microprocessor programs.
L - ON/OFF switch.
M –
Power cable.
N – Gas hose.
Summary of Contents for MultiMig 521
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