Telwin Technomig 180 Dual Synergic Manual De Instrucciones página 8

circuits in the wire tip positioned in the weld pool (up to 200 times per
second). The wire stick-out is normally between 5 and 12 mm.
Carbon steel and low-alloy steel
- Usable wire diameter:
- Usable gas:
Stainless steel
- Usable wire diameter:
- Usable gas:
Aluminium and CuSi
- Usable wire diameter:
- Usable gas:
Flux-core wire
- Usable wire diameter:
- Usable gas:
SHIELDING GAS
The shielding gas flow rate must be 8-14 l/min.
SYNERGIC OPERATION
Only the material thickness needs to be selected in order to start welding
(OneTouch Technology).
Two different scales are available (FIG. C-5) that give an approximate
indication of the thickness that can be welded according to the wire
being used.
Adjusting the welding power according to the plate thickness influences
the feeding speed and the quantity of current that is transferred to the
transfer wire at the same time.
Having the arc length adjuster in an intermediate position
good starting point for welding in different working conditions.
ADJUSTING THE SEAM SHAPE
The seam shape is adjusted using the knob (Fig. C-4) which adjusts the arc
length, therefore it establishes the highest or lowest heat transfer for
welding; in most cases when the knob is in the intermediate position (0,
), the base setting is optimal.
Convex shape. This means that there is a low thermal supply
therefore welding is "cold", with little penetration; rotate the knob
clockwise for greater thermal supply to weld with higher fusion.
Concave shape. This means there is a high thermal supply therefore
welding is too "hot", with excessive penetration; rotate the knob counter-
clockwise for lower fusion.
NOTE: There is a label in the reel area that shows various thickness scales
according to the material and gas to be used (Fig. F).
7. MAINTENANCE
WARNING! BEFORE
OPERATIONS MAKE SURE THE WELDING MACHINE IS SWITCHED OFF
AND DISCONNECTED FROM THE MAIN POWER SUPPLY.
ROUTINE MAINTENANCE:
ROUTINE MAINTENANCE OPERATIONS CAN BE CARRIED OUT BY THE
OPERATOR.
Torch
- Do not put the torch or its cable on hot pieces; this would cause the
insulating materials to melt, making the torch unusable after a very
short time;
- Make regular checks on the gas pipe and connector seals;
- Every time the wire reel is changed, blow out the wire-guide hose using
dry compressed air (max. 5 bar) to make sure it is not damaged;
- Before every use, check the wear and correct assembly of the parts at
the end of the torch: nozzle, contact tip, gas diffuser.
Wire feeder
- Make frequent checks on the state of wear of the wire feeder rollers,
regularly remove the metal dust deposited in the feeder area (rollers
and wire-guide infeed and outfeed).
EXTRAORDINARY MAINTENANCE
EXTRAORDINARY MAINTENANCE MUST ONLY BE CARRIED OUT BY
0.6 - 0.8 mm
CO or Ar/CO
2
Ar/O or Ar/CO (1-2%) mixtures
2 2
0.8 - 1.0 mm (0.8 mm for CuSi)
0.8 - 1.2 mm (140 A version)
0.8 - 0.9 mm (115 A version)
CARRYING OUT MAINTENANCE
TECHNICIANS WHO ARE EXPERT OR QUALIFIED IN THE ELECTRIC-
MECHANICAL FIELD, AND IN FULL RESPECT OF THE IEC/EN 60974-4
TECHNICAL DIRECTIVE.
mixes.
2
WARNING! BEFORE REMOVING THE WELDING MACHINE
0.8 mm PANELS AND WORKING INSIDE THE MACHINE MAKE SURE THE
WELDING MACHINE IS SWITCHED OFF AND DISCONNECTED FROM
THE MAIN POWER SUPPLY OUTLET.
If checks are made inside the welding machine while it is live, this
may cause serious electric shock due to direct contact with live parts
Ar
and/or injury due to direct contact with moving parts.
- Inspect the welding machine regularly, with a frequency depending
on use and the dustiness of the environment, and remove the dust
None deposited on the transformer, reactance and rectifier using a jet of dry
compressed air (max. 10 bar).
- Do not direct the jet of compressed air on the electronic boards; these
can be cleaned with a very soft brush or suitable solvents.
- At the same time make sure the electrical connections are tight and
check the wiring for damage to the insulation.
- At the end of these operations re-assemble the panels of the welding
machine and screw the fastening screws right down.
- Never, ever carry out welding operations while the welding machine is
open.
- After having carried out maintenance or repairs, restore the connections
and wiring as they were before, making sure they do not come into
contact with moving parts or parts that can reach high temperatures.
Tie all the wires as they were before, being careful to keep the high
gives a voltage connections of the primary transformer separate from the low
voltage ones of the secondary transformer.
Use all the original washers and screws when closing the casing.
8. TROUBLESHOOTING
IN CASE OF UNSATISFACTORY FUNCTIONING, BEFORE SERVICING
MACHINE OR REQUESTING ASSISTANCE, CARRY OUT THE FOLLOWING
CHECK:
- Check that when general switch is ON the relative lamp is ON. If this is
not the case then the problem is located on the mains (cables, plugs,
outlets, fuses, etc.)
- Check that the yellow led (ie. thermal protection interruption- either
over or undervoltage or short circuit) is not lit.
- Check that the nominal intermittance ratio is correct. In case there is
a thermal protection interruption, wait for the machine to cool down,
check that the fan is working properly.
- Check the mains voltage: if the value is too high or too low the welding
machine will be stopped.
- Check that there is no short-circuit at the output of the machine: if this
is the case eliminate the incovenience.
- Check that all connections of the welding circuit are correct,
particularly that the work clamp is well attached to the workpiece, with
no interferring material or surface-coverings (ie. Paint).
- Protective gas must be of appropriate type and quantity.
- 8 -