Maintenance, care and disposal
Maintenance schedule
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6.3.4 Power source (inverter)
WARNING
Risk of injury due to insufficient training!
Appropriate training is required for the following maintenance steps to prevent injuries.
• Only authorised service personnel may carry out this maintenance step.
• Note the warnings and maintenance instructions at the beginning of this chapter!
Figure 6-8
• Switch off the machine and disconnect the mains plug. Remove the screws of the side panels and the
grille at the rear. Remove side panels (lift up and to the side). Remove louvre (remove downwards and
to the back).
• Use only compressed air free of water and oil. Do not blow on electronic components directly. The ma-
chine fans may over-rev due to the compressed air and thus become damaged. Therefore, use a
screwdriver to block the machine fan mechanically.
Figure 6-9
• Blow out the areas in front of the inverter from the side.
Follow official regulations on disposal!
• After cleaning, remove any mechanical blockages from the fans, close the machine in reverse order
and check according to applicable regulations.
6.3.5 Annual test (inspection and testing during operation)
A periodic test according to IEC 60974-4 "Periodic inspection and test" has to be carried out. In addition
to the regulations on testing given here, the relevant local laws and regulations must also be observed.
For more information refer to the "Warranty registration" brochure supplied and our information regarding
warranty, maintenance and testing at
