Service
10 Service
This chapter contains information for maintaining the device.
10.1 Safety
WARNING
Any service work must be carried out by qualified staff.
Unauthorized opening and improper interventions can lead to personal injury or material
damage. Repairs on the frequency inverters may only be carried out by the manufactur-
er or persons authorized by the manufacturer.
During any service work, comply with the documentation.
Disconnect the frequency inverter from mains voltage and protect it against being ener-
gized unintentionally.
Verify that the frequency inverter is discharged.
When the frequency inverter is disconnected from power supply, the mains, DC-
link
voltage and motor terminals may still be live for some time. Wait for some minutes until
the DC link capacitors have discharged before starting to work at the unit.
Do not touch the terminals because the capacitors may still be charged.
If voltage supply is switched on, no covers of the frequency inverter may be removed.
After service, all covers must be installed and the terminals must be checked.
The frequency inverter complies with protection class IP20 only if the covers are mount-
ed properly.
Avoid soiling during service work.
After service, make sure that no foreign particles (e.g. chips, dust, wires, screws, tools)
are inside the frequency inverter.
Do not touch electronic components or contacts. The frequency inverter is e
quipped
with components which are sensitive to electrostatic energy and can be damaged if
handled improperly.
Only use original spare parts.
10.2 Regular service work
Cleaning instructions
• Use dry, oil-free air to remove dust.
• Use appropriate air pressure for cleaning.
• Do not use solvents for cleaning circuit boards.
• Use antistatic materials for cleaning in order to avoid electrostatic charging.
271
Safety 06/2013 Operating Instructions
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