Siemens YASKAWA 840DI Maintenance Manual page 17

• When switching on the main power, ensure that at least 2 seconds have elapsed
after the last switching-off operation.
Otherwise malfunction could result.
• Never attempt to disassemble or modify the units or devices in the control panels.
Otherwise a fire, damage, or malfunction could result.
• Do not tamper with the settings of the rheostats or other devices of the control
panels.
Otherwise a fire, damage, or malfunction could result.
Maintenance
• Confirm that the main power and the control power supplies are switched off and
the CHARGE indicator is not lit before starting maintenance work except
confirmation of running status.
Otherwise electric shock or damage could result.
• Do not touch the terminals of the Inverters and Converters, as some of them are at
high voltage and very dangerous.
Otherwise electric shock could result.
• Do not leave the up-down cover open when the panel is energized. Always turn off
the circuit breaker before opening the covers.
Otherwise electric shock could result.
• Only qualified personnel may perform maintenance or service work.
Otherwise electric shock could result.
MANDATORY
PROHIBITED
WARNING
xvii
Safety precautions