90PUNTPI11 – 90PUNTPI12 – 90PUNTPI13 – 90PUNTPI21 – 90PUNTPI22 – 90PUNTPI23
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4.
MAINTENANCE INSTRUCTIONS
4.1
MAINTENANCE INFORMATION
Maintenance personnel must be qualified, know the welding machine and work without modifying the safety of the product.
The maintenance person must also respect the general accident prevention rules and regulations.
Small maintenance jobs
Use a fine grain file to keep the electrode tips free from ferrous waste and from the small craters that form.
Restore electrode diameter to its original size because welding tends to widen it.
4.2
GUIDE TO MAINTENANCE
Daily checks
q
clean surfaces that are dirty with oil, grease and water
q
clean the area around the welding machine
q
clean any transparent guards
q
make sure that all the protection devices are in their place and working properly
Attention: do not squirt jets of water on the welding machine
do not use solvents to clean the painted parts
Electrical system and welding control unit
q
check condition of the protection circuit and tightness of the “PE” terminal
q
check condition of the electric contacts (microswitches)
q
check condition of the setting keypads/potentiometers
q
see if there is any noise coming from secondary connections that have not been fixed properly
q
check that all the signalling lights are in proper working order
Compressed air circuit
q
check for any air leaks
q
check line pressure, welding pressure, force on the electrodes
q
empty the air line filter
q
check lubricator oil level (if there is one)
Mechanical parts
q
lubricate the cylinder rod
q
check tightness of the components: cylinder, arm holder, arms, electrode holder
Weekly checks
q
check any unusual operations with the operator
q
remove oil stains from the welding area floor
q
check for any air leaks
Electrical system and control unit
q
check the microswitches
q
check to see if any unauthorised changes have been made to the programming parameters.
Electrodes and electrode holder
q
carry out an internal inspection of the electrodes and electrode holder
q
clean the electrodes, electrode holder, clamps
q
check parallelism of the arms in the welding position
Compressed air circuit
q
check tightness of connections
q
check tightness of the cylinder screws
