Siemens PM330 Hardware Installation Manual page 66

Service and maintenance
5.1 Maintenance
Safety instructions for maintenance and repair work
Not observing fundamental safety instructions and residual risks
The non-observance of the fundamental safety instructions and residual risks stated in
Chapter Basic safety instructions (Page 7) can result in accidents with severe injuries or
death.
• Adhere to the fundamental safety instructions.
• When assessing the risk, take into account residual risks.
Electric shock due to the residual charge of the DC link capacitors
Because of the DC link capacitors, a hazardous voltage is present for up to five minutes
after the power supply has been switched off.
Contact with live parts can result in death or serious injury.
• Only open the device after five minutes have elapsed.
• Measure the voltage before starting work on the DCP and DCN DC link terminals.
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WARNING
DANGER
Hardware Installation Manual, 12/2018, A5E32844552B AF
Power Module PM330