Telwin TECHNOMIG 225 DUAL SYNERGIC Bedienungsanleitung Seite 8

WIRE.
- Remove the cover by unscrewing the relative screw (1).
- Position the wire coil onto the reel.
- Release the pressure counter-roller and distance it from the lower roller (2).
- Free the wire end, cut off the misshaped end by cutting it cleanly and without leaving a
burr; rotate the reel counter-clockwise and position the wire end into the wire feed input,
pushing it by 50-100 mm into the torch swan neck (2).
- Reposition the counter-roller, adjusting the pressure at an intermediate value, make sure
the wire is positioned correctly in the hollow of the lower roller (3).
- Gently stop the reel, using the relative adjustment screw.
- With the SPOOL GUN connected, insert the welding machine plug into the mains socket,
switch on the welding machine, press the spool gun push-button and wait for the end of
the wire which is running along the whole wire feed casing, to exit by 100-50mm from the
front of the torch, then release the torch push-button.
6. MIG-MAG WELDING: PROCESS DESCRIPTION
6.1 SHORT ARC
Wire welding and detachment of the drop takes place via subsequent short-circuits of the
wire tip and weld pool (up to 200 times per second). The stick-out length of the wire is
normally between 5 and 12mm.
Carbon, low-alloy steel
- Usable wire diameter:
- Usable gas:
Stainless steel
- Usable wire diameter:
- Usable gas:
Aluminium and CuSi/CuAl
- Usable wire diameter:
- Usable gas:
Core wire
- Usable wire diameter:
- Usable gas:
6.2 PROTECTION GAS
The protective gas flow rate must be 8-14 l/min.
7. MIG-MAG OPERATION MODEE
7.1 SYNERGIC operating mode
Defined by the user, the parameters such as material, wire diameter
welding machine is automatically set in optimal operating conditions established by the
various synergic curves saved. The user only has to select the material thickness to begin
welding (OneTouch Technology).
7.1.1 LCD display in SYNERGIC mode (Fig. L)
NB: All the values which be displayed and selected depend on the type of set welding.
1- Synergic operating mode
2- Material to weld. Types available: Fe (steel), Ss (stainless steel), AlMg
CuSi/CuAl (zinc-plated sheet metal - brazing), Flux (core wire - NO GAS welding);
3- Diameter of wire to use;
4- Recommended safety gas;
5- Thickness of material to weld;
6- Graphic indicator of thickness of material;
7- Graphic indicator of welding seam shape;
8- Welding values:
wire feed speed;
welding voltage;
welding current.
9- ATC (Advanced Thermal Control).
7.1.2 Parameters setting
Pressing button C-2 for at least 1 second, you can access the preset programs on the
machine.
Turning the knob C-2 you can slide all the programs (PRG 01, 02, etc.). Select the program
chosen by pressing and releasing the same knob. The welding machine sets itself
automatically in the best operation conditions established by the different synergy curves
that are saved. The user only has to select the material thickness using knob C-1 to begin
welding. The welding voltage and current is shown on the display only during welding.
7.1.3 Adjustment of the welding seam shape
Adjustment of the shape of the seam takes place using the knob (Fig. C-2) that regulates the
arc length thereby establishing the greater or lesser welding temperature input.
The settings scale varies from -10 ÷ 0 ÷ +10; in most cases, the knob in the intermediate
position (0, ) has an optimal base setting (the value is shown on the LCD display on the
left of the graphic symbol of the welding seam and disappears after a set time).
Using the knob (Fig. C-2), the graphic indication on the display of the shape of the welding
changes showing a more convex, flat or concave result.
Convex shape. It means there is a low thermal load, therefore welding is "cold", with
little penetration; therefore, turning the knob clockwise you obtain more thermal load with
the effect of welding with greater melting.
Concave shape. It means there is a high thermal load, therefore welding is too "hot",
with excessive penetration; then, turn the knob anti-clockwise to obtain greater melting.
7.1.4 ATC Mode (Advanced Thermal Control)
This is enabled automatically when the thickness selected is less or equal to 1.5mm.
Description: the particular instantaneous control of the welding arc and the ultra rapid
correcting of parameters minimize current spikes, something that is characteristic of Short
Arc transfer procedures, to the advantage of a low thermal load on the piece to be welded.
The result, on the one hand, is reduced deformation of materials and, on the other, a fluid
and accurate transfer of the weld material and the creation of a welding seam that is easy
to model.
Advantages:
- easy welding of thin materials;
- decreased deformation of material;
- stable arc even when working with low currents;
- rapid and accurate spot welding;
- easier coupling of spaced sheets.
0.6 - 0.8 - 1.0 mm (1.2 mm version 270A only)
or Ar/CO
CO
2
0.8 - 1.0 mm (1.2 mm version 270A only)
Ar/O or Ar/CO
2 2
0.8 - 1.0 mm (1.2 mm version 270A only)
, gas type
;
AlSi
5
7.1.5 Using the spool gun (where available)
All the settings procedures (material, wire diameter, gas type) are described above.
The spool gun knob (Fig. I-5) adjusts the wire speed (and the welding current and thickness
simultaneously). The user only has to adjust the arc voltage via the display (if necessary).
7.1.6 Advanced parameter setting: MENU 1 (Fig. M)
Press the knobs (Fig. C1) and (Fig. C2) for at least 1 second and release to access the advanced
parameter settings menu. When MENU 1 appears, again press. Each parameter can be set to
the desired value by rotating/pressing the knob (Fig. C2) until you exit the menu.
: trailing wire ramp correction (Fig. M-1)
Use to correct the trailing wire starting ramp to prevent any initial accumulation in the
welding seam. Settings from - 10 % to + 10 %. Factory value: 0 %
: electronic reactance correction (Fig. M-2)
A higher value determines a hotter welding bath. Settings from - 10 % (low reactance
machines) to + 10 % (high reactance machines). Factory value: 0 %
: burn-back correction. (Fig. M-3)
mixtures
Use to adjust the wire burn-back time when welding is stopped. Settings from - 10 % to +
2
10 %. Factory value: 0 %
mixtures (1-2%)
: Post gas. (Fig. M-4)
Use to adapt the protective gas outflow starting from when welding is stopped. Settings
Ar
from 0 to 10 seconds. Factory value: 1 sec.
0.8 - 0.9 - 1.2mm : Wire speed correction (Fig. M-5)
None It increases or decreases the wire feed speed according to the display. Adjustment from -3
to +3m/min. Factory value: 0 m/min.
7.2 MANUAL operating mode
The user can customise all the welding parameters.
7.2.1 LCD display in MANUAL mode (Fig. N)
1- MANUAL operating mode
, the
2- Welding values:
wire feed speed;
welding voltage;
welding current.
7.2.2 Parameters setting
(aluminium),
5
In manual mode, the wire feeding speed and the welding voltage are adjusted separately.
The knob (Fig. C-1) adjusts the wire speed, the knob (Fig. C-2) adjusts the welding voltage
(which determines the welding power and influences the seam shape). The welding current
is shown on the display (Fig. N-2) only during welding.
7.2.3 Setting of spool gun parameters (where available)
In manual mode, the wire feeding speed and the welding voltage are adjusted separately.
The spool gun knob (Fig. L-5) adjusts the wire speed, whilst the welding voltage is adjusted
via the display.
7.2.4 Advanced parameter setting: MENU 1 (Fig. M)
Press the knobs (Fig. C1) and (Fig. C2) for at least 1 second and release to access the advanced
parameter settings menu. When MENU 1 appears, again press. Each parameter can be set to
the desired value by rotating/pressing the knob (Fig. C2) until you exit the menu.
: Trailing wire ramp (Fig. M-1).
Use to adjust wire feed rate as welding starts, in order to optimise arc strike. Settings from 20
to 100 % (start in % of full capacity speed). Factory value: 50 %
: Electronic reactance (Fig. M-2)
A higher value determines a hotter welding bath. Settings from 10 % (low reactance
machines) to 100 % (high reactance machines). Factory value: 50 %
: Burn-back. (Fig. M-3)
Use to adjust the wire burn-back time when welding is stopped. Settings from 0 to 1 sec.
Factory value: 0.08 sec.
: Post gas. (Fig. M-4)
Use to adapt the protective gas outflow starting from when welding is stopped. Settings
from 0 to 10 seconds. Factory value: 1 sec.
: Wire speed correction (Fig. M-5)
It increases or decreases the wire feed speed according to the display. Adjustment from -3
to +3m/min. Factory value: 0 m/min.
7.2.5 T1, T2 and SPOOL GUN torch settings (where available)
The T1, T2, SPOOL GUN torch settings can be edited in two different ways:
- press the button on the control panel (Fig. C-4) where the corresponding LED will come
on;
- press and release, after at least one second, the button for the torch to be used until the
corresponding LED comes on.
8. CONTROLLING THE TORCH PUSH-BUTTON
8.1 Setting the torch push-button control mode (Fig. O)
Both in manual and synergic mode to access the menu, simultaneously press the knobs (Fig.
C1) and (Fig. C2) for at least 1 second and release them. Turn the knob (Fig. C2) until menu 2
appears. Confirm selection by pressing the knob again.
8.2 Torch push-button control mode
It is possible to set 3 different torch push-button control modes:
- 8 -
;