Introduction And General Description; Wire Feeder - Telwin 952607 Bedienungsanleitung

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INTRODUCTION AND GENERAL DESCRIPTION

This compact machine is used for arc welding (from now on
called WELDER) and has been designed specifically for the
MOG welding of carbon steel and low-alloy steel without
shielding gas using cored (tubular) electrode wires.
The welder is fitted with a flat power transformer and Graetz
bridge rectifier.
In addition a direct current permanent magnet gear-motor
(Fig A pos 1) is installed in the accessible opening in the
welder (Fig A pos 2). This gear-motor can take reels of up to
1 Kg (Fig A pos 3).
The welder also has a torch permanently connected (Fig A
pos 4) and a return cable complete with work clamp (Fig A
pos 5).
Welding current and wire speed are adjusted by means of
the switch placed on the front panel (Fig A pos 6).
Adjustment of wire speed can also be achieved using the
knob situated on the front (for those models where it is
present).
A thermostat is fitted which protects the welder from
overheating caused by malfunctions or particularly heavy
use; the yellow lamp on the main switch (Fig A pos 7) is
alight when the thermostat intervenes .
The symbol "S" on the rating plate indicates that the welder
has been designed to be used in locations where there is
increased risk of electric shocks
The code IP indicates the degree of protection of the casing
against solid and liquid substances. The welder with IP 21 IS
NOT suitable for outdoor use (see also paragraph on safety
rules).
PREPARATION FOR WELDING
- Connect the work clamp to the piece to be welded.
- Switch the welder on and set the welding current and wire
speed by means of the switch MIN-MAX /
speed with the special knob (for those models where it is
provided)
CAUTION: The contact tip is
maximum care should be taken to avoid inadvertent
starting.
- Press the welding torch button until the wire comes out of
the contact tip.
- The warning light will come on in the event of over-heating
and the welding current supply will be interrupted. This will
be automatically re-connected after a few minutes of
cooling.
MAINTENANCE TORCH
- The arc is dangerous for your eyes: always use and
ensure that others use the protective mask.
- Always wear suitable clothing and gloves during welding
operations.
- Do not direct the gun towards yourself and do not touch
the wire.
- Do not hit or clamp the gun with tools.
- Avoid resting the torch and its cable on hot pieces; this
could cause the insulating materials to melt and so
making the torch immediately unusable.
Fig. A
Set the wire
Fig. B
supplied with voltage;
- Each time the wire reel is changed, blow dry compressed
air (max 10 bar) through the wire guide hose and check
the condition of the hose.
- Check at least once a day, the condition and the correct
assembly of the end parts of the torch: nozzle, contact tip,
and gas diffuser.
- Before carrying out any maintenance operation or
replacing parts on the gun, disconnect from the power
supply and let the gun cool.
- Replace the contact tube if the hole is distorted or
enlarged.
- Periodically clean the inside of the nozzle and shroud.
- Frequently check the condition of the welding cables and
replace them if excessively worn.
TORCH TECHNICAL SPECIFICATIONS
Welding current
Voltage class
Voltage type
Reference standards

WIRE FEEDER

- Check the condition of the wire feeder rollers and
regularly remove any metallic dust deposited in the feed
area (rollers and entrance and outlet wire guide).
CONNECTION TO MAINS SUPPL Y
Connection to the mains should be carried out using the
cable supplied.
Make sure that the mains voltage corresponds to the
operating voltage of the wire system.
THE WELDER SHOULD ALWAYS BE EARTHED , using the
yellow-green wire of the power supply cable, which also has
the label with the symbol W ; the other two wires should be
connected to the mains.
PLUG:
Fit the power supply cable with a standard (2P + E) plug
with adequate current carrying capacity and make use
of a mains socket fitted with protection devices such as
fuses or automatic circuit breakers which should be
able to withstand the maximum absorption of the
welder (see reference data on rating plate).
If extension leads are connected to the main cable, the
cross-section of these should never be lower than the cross-
section of the cable supplied.
TECHNICAL DAT A
Technical data relative to the performance of the machine
may be found on a plate (back panel) with the following
symbols, whose meaning is explained below.
1- EUROPEAN Norm of reference, for safety and
construction of arc welding machines.
2- Symbol for internal machine structure: inverter
transformer -rectifier.
3- Symbol of planned welding procedure: welding with
continuous flow of welding wire.
Symbol S: indicates that welding operations may be
4-
carried out in environments with heightened risk of
electric shock (e.g. very close to large metallic
- 6 -
: 60A @ 100%
80A @ 60%
160A @ 15%
:
:
: EN 50078
Fig. D
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DC