Telwin ELECTROMIG 550 SYNERGIC Manuel D'instructions page 10

- Quickly lift the electrode from the workpiece to interrupt welding.
14.3 LCD DISPLAY IN TIG MODE (Fig. L-12)
The actual welding settings (welding current and voltage) are shown in the top section
of the display.
14.4 Insertion of remote command (on request)
On insertion of the remote command in the specific connector (Fig. B-13) the icon
switches on .
Adjustment can exclusively be from the remote command and precisely:
a) Command with one potentiometer: allows adjustment of the welding current;
b) Command with two potentiometers: allows adjustment of the welding current,
while the second potentiometer is disabled.
15. ALARM SIGNALS (TAB. 8)
Reset is automatic when the reason for alarm activation stops.
Alarm messages that can appear on the display:
CODE
02 Thermal protection alarm
03 / 04 Overvoltage/undervoltage alarm
18 Auxiliary voltage alarm
10 Welding overcurrent alarm
11 Torch short-circuit alarm
19 Feeder anomaly alarm
13 Off-line alarm
13 Line-error alarm
09 Cooling unit alarm
When the welding machine is switched off, the Over/under voltage alarm signal may
appear for a few seconds.
16. JOBS MENU
16.1 Save procedure (SAVE).
Following optimal adjustment of the welding machine for a certain type of weld,
proceed as follows:
- Press button C-4 for at least 3 seconds until the screw in Fig. I-13 appears.
- Turn the knob C-5 to choose the number with which you want to save the program
(J1 ÷ 10).
- Press button C-4 for at least 3 seconds until the SAVE icon (
16.2 Retrieval procedure of a customised program
- Press button C-4 for at least 3 seconds until the screw in Fig. I-13 appears.
- Turn the knob C-5 to choose the number used to save the program which you now
intend to use (J1 ÷ 10).
- Press button C-4 to load the chosen program
NOTES:
- A RETRIEVED PROGRAM CAN BE MODIFIED AS THE OPERATOR WISHES,
BUT THE MODIFIED VALUES ARE NOT AUTOMATICALLY SAVED. IF YOU
WANT TO SAVE THE NEW VALUES ON THE SAME PROGRAM YOU NEED TO
EXECUTE THE SAVING PROCEDURE.
- REGISTRATION OF CUSTOMISED PROGRAMS AND THE RELEVANT
SCHEDULING OF ASSOCIATED
RESPONSABILITY.
- CUSTOMISED PROGRAMS CANNOT BE SAVED IN MMA OR TIG ELECTRODE
MODE.
17. MAINTENANCE
WARNING! BEFORE CARRYING OUT MAINTENANCE OPERATIONS
MAKE SURE THE WELDING MACHINE IS SWITCHED OFF AND
DISCONNECTED FROM THE MAIN POWER SUPPLY.
17.1 ROUTINE MAINTENANCE:
ROUTINE MAINTENANCE OPERATIONS CAN BE CARRIED OUT BY THE
OPERATOR.
17.1.1 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.
- Accurately match collet and collet body with the selected electrode diameter in order
to avoid overheating, bad gas diffusion and poor performance.
- At least once a day check the terminal parts of the torch for wear and make sure they
are assembled correctly: nozzle, electrode, electrode-holder clamp, gas diffuser.
- Before using the welding machine, always check the terminal parts of the torch for
wear and make sure they are assembled correctly: nozzle, electrode, electrode-
holder clamp, gas diffuser.
17.1.2 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).
17.2 EXTRAORDINARY MAINTENANCE
EXTRAORDINARY MAINTENANCE MUST ONLY BE CARRIED OUT BY
TECHNICIANS WHO ARE EXPERT OR QUALIFIED IN THE ELECTRIC-
MECHANICAL FIELD, AND IN FULL RESPECT OF THE IEC/EN 60974-4
TECHNICAL DIRECTIVE.
WARNING! BEFORE REMOVING THE WELDING MACHINE 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 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 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
DESCRIPTION
) stops flashing.
PARAMETERS IS THE USER'S
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 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.
18. TROUBLESHOOTING (TAB. 8)
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.)
- There is no alarm signalling intervention of the thermostat safeguard, over or
undervoltage or short-circuit.
- 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.
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