Standard Accessories; Optional Accessories; Introduction And General Description; Technical Data - Telwin MIG-MAG Manual De Instrucciones

safety platforms are used.
- VOLT AGE BETWEEN ELECTRODE HOLDERS OR TORCHES: working with
more than one welding machine on a single piece or on pieces that are
connected electrically may generate a dangerous accumulation of no-load
voltage between two different electrode holders or torches, the value of which
may reach double the allowed limit.
An expert coordinator must use measuring instruments to determine the
existence of a risk and should take suitable protection measures as detailed in
5.9 of the "IEC TECHNICAL SPECIFICATION or CLC/TS 62081".
RESIDUAL RISKS
- OVERTURNING: position the welding machine on a horizontal surface that is
able to support the weight: otherwise (e.g. inclined or uneven floors etc.) there
is danger of overturning.
- IMPROPER USE: it is hazardous to use the welding machine for any work other
than that for which it was designed (e.g. de-icing mains water pipes).
- MOVING THE WELDING MACHINE: Always secure the gas bottle, taking
suitable precautions so that it cannot fall accidentally.
The safety guards and moving parts covers of the welding machine and of the
wire feeder should be in their proper positions before connecting the welding
machine to the power supply.
WARNING! Any manual operation carried out on the moving parts of the wire
feeder, for example:
- Replacing rollers and/or the wire guide
- Inserting wire in the rollers
- Loading the wire reel
- Cleaning the rollers, the gears and the area underneath them
- Lubricating the gears
SHOULD BE CARRIED OUT WITH THE WELDING MACHINE SWITCHED OFF AND
DISCONNECTED FROM THE POWER SUPPLY OUTLET .
•
Never lift the welding machine.

2. INTRODUCTION AND GENERAL DESCRIPTION

2.1 INTRODUCTION
This welding machine consists of a power source and a separate wire feeder connected
to it by a cable bundle. The power source is a three phase powered, constant voltage
rectifier with step regulation and multiple reactance outlets. The wire feeder is supplied
with a wire feeder unit with 4 motorised rollers (2 rollers in the 350A model) with
independent adjustment of pulling pressure; the wire feed rate and welding cycle control
functions are adjusted electronically directly from the front panel.
For the R.A. version the wire feeder is equipped with piping and connectors for
connecting the water-cooled torch to the cooling unit.
2.2 WELDABILITY OF MATERIALS
The welding machine is suitable for MAG welding of carbon or mild steels using CO
shielding gas and Ar/CO or Ar/CO /O mixtures (Ar-Argon generally >80%) with both
2
flux core and tubular wire.
It is possible to use tubular wire without shielding gas (self-shielding gas) by adjusting
torch polarity according to the wire manufacturer's instructions.
For MAG welding of stainless steel, similar methods are use to those for carbon steel,
FIG. A
6
5
3
4
3
2
3
50/60Hz
1
2 2
N.
EN 60974-1
A/V - A/V
%
X
U
V
A
0
I
2
V
U
2
U V I max
1 1
IP
while it is necessary to use flux core or tubular wire identical to or compatible with the
base material and mixtures of Ar/O or Ar/CO shielding gas (Ar generally > 98%).
MIG welding of aluminium and its alloys should be carried out using wires with a
composition that is compatible with the material to be welded using pure Ar (99.9%) as
shielding gas.
MIG brazing, typically, can be carried out on galvanised plate with copper alloy wires
(e.g. copper-silicon or copper-aluminium) with pure Ar (99.9%) shielding gas.

2.3 STANDARD ACCESSORIES

- ARGON cylinder adapter.
- Cable and earth clamp.
- Gas regulator 2 manometers.
- G.R.A. water cooling unit
(just for the R.A. version).
- MIG torch
(water-cooled in the R.A. version).
- Wire feeder.

2.4 OPTIONAL ACCESSORIES

- G.R.A. water cooling unit
(standard accessory on the R.A. models).
- Torch holder mobile arm kit.
- Connection cables kit for the R.A. models 3m and 9m.
- Connection cables kit 3m and 9m.
- Reel cover kit.
- Wire feeder wheel kit.
- Aluminium welding kit.
- Cored wire welding kit .
- 5m MIG torch 350A, 500A.
- 3m MIG torch 500A R.A.
(standard accessory on the R.A. models).
- 5m MIG torch 500A R.A.

3. TECHNICAL DATA

3.1 DAT A PLATE (FIG. A)

The most important data regarding use and performance of the welding machine are
summarised on the rating plate and have the following meaning:
1- Protection rating of the covering.
2- Symbol for power supply line:
1~: single phase alternating voltage;
3~: three phase alternating voltage.
3- Symbol S: indicates that welding operations may be carried out in environments with
heightened risk of electric shock (e.g. very close to large metallic volumes).
4- Symbol for welding procedure provided.
5- Symbol for internal structure of the welding machine.
6- EUROPEAN standard of reference, for safety and construction of arc welding
machines.
7- Manufacturer's serial number for welding machine identification (indispensable for
technical assistance, requesting spare parts, discovering product origin).
8- Performance of the welding circuit:
- U : maximum no-load voltage (open welding circuit).
0
- I /U : current and corresponding normalised voltage that the welding machine can
2 2
supply during welding.
- X : Duty cycle: indicates the time for which the welding machine can supply the
corresponding current (same column). It is expressed as %, based on a 10 minutes
cycle (e.g. 60% = 6 minutes working, 4 minutes pause, and so on).
If the usage factors (on the plate, referring to a 40°C environment) are exceeded, the
thermal safeguard will trigger (the welding machine will remain in standby until its
temperature returns within the allowed limits).
- A/V-A/V: shows the range of adjustment for the welding current (minimum
maximum) at the corresponding arc voltage.
9- Technical specifications for power supply line:
2
- U : Alternating voltage and power supply frequency of welding machine (allowed
1
limit 10%).
- I : Maximum current absorbed by the line.
1 max
7
% %
8
A A
V V
A I eff A
1
9
- 21 -
2 2
FUSE T A
10
11