Telwin BIMAX 120 AUTOMATIC Manuel D'instructions page 6

- 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 (if
used).
The safety guards and moving parts of the covering 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.
- Do not use the handle to hang the welding machine.
- Never lift the welding machine.
2. INTRODUCTION AND GENERAL DESCRIPTION
This welding machine is a power source used for arc welding and has
been designed speci cally for MAG welding of carbon steel and low-alloy
steel with either CO or Argon/CO
2
cored (tubular) electrode wires. They are also suitable for MIG welding
of stainless steel using Argon gas + 1-2% oxygen and of aluminium with
Argon gas using electrode wires with a composition suited to the piece to
be welded (only models in Fig. B1).
It is also possible to use cored wires in applications without protective
gas by adapting the polarity of the torch to the wire manufacturer's
recommendations (Model in Fig. B2 uses only ux core wire).
STANDARD ACCESSORIES:
- torch;
- return cable complete with earth clamp;
- wheels kit (in models on wheels).
3. TECHNICAL DATA
DATA PLATE
The most important data regarding use and performance of the welding
machine are summarised on the rating plate and have the following
meaning:
1- EUROPEAN standard of reference, for safety and construction of arc
welding machines.
2- Symbol for internal structure of the welding machine.
3- Symbol for welding procedure provided.
4- 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).
5- Symbol for power supply line:
1~ : single phase alternating voltage;
3~ : 3-phase alternating voltage.
6- Protection rating of the covering.
7- Technical speci cations for power supply line:
- U : Alternating voltage and power supply frequency of welding
1
machine (allowed limit ±10%).
- I
: Maximum current absorbed by the line.
1 max
- I
: e ective current supplied.
1e
8- Performance of the welding circuit:
- U : maximum no-load voltage (open welding circuit).
0
- I /U : current and corresponding normalised voltage that the
2 2
welding machine can 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 min. cycle (e.g. 60% = 6 minutes
working, 4 minutes pause, and so on).
mixture shielding gas using solid or
2
Fig. A
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- Manufacturer's serial number for welding machine identi cation
(indispensable for technical assistance, requesting spare parts,
discovering product origin).
10- : Size of delayed action fuses to be used to protect the
power line.
11- Symbols referring to safety regulations, whose meaning is given in
chapter 1 "General safety considerations for arc welding".
Note: The data plate shown above is an example to give the meaning
of the symbols and numbers; the exact values of technical data for the
welding machine in your possession must be checked directly on the data
plate of the welding machine itself.
OTHER TECHNICAL DATA
- WELDING MACHINE:
- TORCH:
The welding machine weight is shown in table 1 (TAB. 1).
4. DESCRIPTION OF THE WELDING MACHINE
CONTROL, ADJUSTMENT AND CONNECTION DEVICES
5. INSTALLATION
WARNING!
CARRY OUT ALL INSTALLATION OPERATIONS AND ELECTRICAL
CONNECTIONS WITH THE WELDING MACHINE COMPLETELY
SWITCHED OFF AND DISCONNECTED FROM THE POWER SUPPLY
OUTLET.
THE ELECTRICAL CONNECTIONS MUST BE MADE ONLY AND
EXCLUSIVELY BY AUTHORISED OR QUALIFIED PERSONNEL.
Unpack the welding machine, assemble the separate parts contained in
the package.
Assembling the protective mask
Assembling the return cable-clamp
HOW TO LIFT THE WELDING MACHINE
None of the welding machines described in this manual is equipped with
a lifting device.
SITE
Locate the welding machine in an area where openings for cooling air
are not obstructed (forced circulation with fan), leave at least 250mm
free space around the welding machine; check that conductive dusts,
corrosive vapours, humidity etc., will not enter welding machine.
WARNING! Position the welding machine on a at surface
with su cient carrying capacity for its weight, to prevent it from
tipping or moving hazardously.
CONNECTION OF PLUG AND SOCKET (only applicable to models
supplied without plug): connect a normalised plug (2P + T for 1ph, 3P
+ T for 3ph) having su cient capacity- to the power cable and prepare a
mains outlet tted with fuses or an automatic circuit-breaker; the special
earth terminal should be connected to the earth conductor (yellow-
green) of the power supply line. Table 1 (TAB.1) shows the recommended
delayed fuse sizes in amps, chosen according to the max. nominal current
supplied by the welding machine, and the nominal voltage of the main
power supply.
- To carry out voltage change operations(only the 3-phase version), take
o the panel to gain access to the inside of the machine, and prepare
the voltage change terminal board so that the connection indicated on
the special indicator plate corresponds to the available power supply
- 6 -
see table 1 (TAB.1)
see table 2 (TAB.2)
Fig. B1, B2
PREPARATION
Fig. C
Fig. D
Fig. E