Yaskawa YASNAC PC NC Maintenance Manual - Manual (Page 105)

PC NC Maintenance Manual The VS-626M5
4-84
Maintenance and Inspection
Others
• Never touch high-voltage terminals in the inverter and the converter. Failure to
observe this warning can result in an electric shock.
• Close upper and lower covers before powering up the inverter or the converter. To
open the covers, make sure to shut OFF the molded-case circuit breaker. Failure to
observe this warning can result in an electric shock.
• Perform maintenance or inspection only after verifying that the CHARGE LED and 7-
segment LED go OFF, after the main circuit power supply and control power supply
are turned OFF. The capacitors are still charged and can be dangerous.
• Only authorized personnel should be permitted to perform maintenance, inspections
or parts replacement. Remove all metal objects (watches, bracelets, etc.) before
operation. Use tools which are insulated against electric shock. Failure to observe
this warning can result in an electric shock.
• The control PC board employs CMOS ICs. Do not touch the CMOS elements. They
are easily damaged by static electricity.
• Do not connect or disconnect wires or connectors while power is applied to the circuit.
Failure to observe this caution can result in personal injury.
• Never modify the product. Failure to observe this warning can result in an electric
shock or personal injury and invalidates the guarantee.
WARNING
CAUTION
WARNING