Maintenance, Care And Disposal; General; Identifying Damage Or Worn Components - EWM AMT301G Operating Instructions Manual

6

Maintenance, care and disposal

6.1

General

Risk of injury due to electrical voltage after switching off!
Working on an open machine can lead to fatal injuries!
Capacitors are loaded with electrical voltage during operation. Voltage remains present
for up to four minutes after the mains plug is removed.
1. Switch off machine.
2. Remove the mains plug.
3. Wait for at last 4 minutes until the capacitors have discharged!
Improper maintenance, testing and repairs!
Maintenance, testing and repair of the machine may only be carried out by skilled and
qualified personnel (authorised service personnel). A competent person is someone
who, based on training, knowledge and experience, can recognize the hazards and pos-
sible consequential damage that may occur when testing power sources and can take
the necessary safety precautions.
• Follow the maintenance instructions > see 6.1.2 chapter.
• If any of the test requirements below are not met, the unit must not be put back into opera-
tion until it has been repaired and tested again.
Repair and maintenance work may only be performed by qualified authorised personnel; otherwise the
right to claim under warranty is void. In all service matters, always consult the dealer who supplied the
machine. Return deliveries of defective equipment subject to warranty may only be made through your
dealer. When replacing parts, use only original spare parts. When ordering spare parts, please quote the
machine type, serial number and item number of the machine, as well as the type designation and item
number of the spare part.
The welding torch is one of the most stressed components of the welding system. Due to the high thermal
load and contamination, regular maintenance and care not only extends the service life of the system but
also saves costs in the long term through the use of fewer replacement parts and less downtime. Perfect
welding results can only be achieved with a properly maintained welding torch.
For maintenance and care, use only the tools, aids and tightening torques specified in the operating in-
structions.
6.1.1

Identifying damage or worn components

Contact tip
• Oval, ground bore at the wire outlet
• Clinging weld spatter that can no longer be removed
• Penetration or burn-off at the contact tip
• Contact tip that sits eccentrically
Gas nozzle
• Clinging weld spatter, deformation, notches, penetration and damaged threads
• The O-ring of the gas nozzle holder is worn (for water-cooled welding torches)
Gas diffuser
• Clogged bores, cracks, burnt-off outer edges
Contact tip holder
• The key flat is defective or worn, thread damaged, clinging weld spatter
Torch head
• The thread is defective or worn
099-500061-EW501
30.05.2023
Maintenance, care and disposal
DANGER
WARNING
General
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