Table of Contents
Advertisement
GENERAL WARNINGS
Always disconnect both electrical and pneumatic supply before carrying out the following maintenance
operations.
•
Always keep the screws of arms, electrode holder, plates and rigid/flexible connections well tightened.
•
Remove possible oxidation from secondary circuit with fine sandpaper.
•
Periodically lubricate (at least every 6 months) with some drops of oil both pins and axis
•
Keep welder clean free of dirt and metal filing attracted by magnetic field generated by the welder when working.
•
Neither washing the welding unit with jets of water which could enter it, nor use strong solvents, thinner, nor
benzene that could damage either painting or the machine plastic components.
ELECTRODES
Electrodes maintenance must be carried out with the welder switched off and with the compressed air
supply disconnected.
•
When operating, the electrodes must be kept clean and their diameter must be kept suitable for the work to be
carried out. Too worn electrodes must be replaced.
PNEUMATIC CIRCUIT
Pneumatic circuit maintenance must be carried out only by specialised personnel trained to accomplish it
under safety conditions. When possible, maintenance must be carried out with the welder switched off and
disconnected from the pneumatic supply, with the circuit free from left air.
•
In case of air leakage, immediately stop operating and remove it.
•
Periodically drain the moisture from the filter group placed on the welder supply input. We recommend the use of
an air filter.
•
Check pressure gauges calibration
EXTRAORDINARY MAINTENANCE
This chapter states the maintenance operations to be carried out in case of:
1) Welder non-working.
2) Lowering of the welder performances.
3) Welder faulty operating.
4) Welding faults.
WELDER NON-WORKING
If the welding control unit does not light up, check the fuse # (30) continuity if the printed circuit connector (14) is
connected.
LOWERING OF THE WELDING UNIT PERFORMANCES
Extraordinary maintenance must be carried out only by specialised personnel equipped with the proper
instruments and trained to accomplish it under safety conditions. When possible, the welder must be
disconnected from both pneumatic and electric supply.
If performances are lower than expected, check :
•
that, when welding, line voltage drop is less than 15%;
•
that the supply cables cross section is adequate;
•
that the electrodes diameter is appropriate for the work to be carried out;
•
that welding or working pressure is adequate for the work in process
10
Advertisement
Table of Contents
