Omron J7 series, User Manual

Page: 142 / 177

128
Maintenance and Inspection
Chapter 8-3
8-3 Maintenance and Inspection
Do not touch the Inverter terminals while the power is being supplied.
Maintenance or inspection must be performed only after turning OFF the
power supply, confirming that the CHARGE indicator (or status indicators) is
turned OFF, and after waiting for the time specified on the front cover. Not
doing so may result in electrical shock.
Maintenance, inspection, or parts replacement must be performed by
authorized personnel. Not doing so may result in electrical shock or injury.
Do not attempt to take the Unit apart or repair. Doing either of these may
result in electrical shock or injury.
Carefully handle the Inverter because it uses semiconductor elements.
Careless handling may result in malfunction.
Do not change wiring, disconnect connectors, the Operator, or optional items,
or replace fans while power is being supplied. Doing so may result in injury,
damage to the product, or malfunction.
Daily Inspection
Check the following items with the system in operation.
• The motor should not be vibrating or making unusual noises.
• There should be no abnormal heat generation.
• The output current value shown on the monitor display should not be
higher than normal.
• The cooling fan on the bottom of the Inverter should be operating
normally, if the Inverter model has the cooling fan.
Periodic Inspection
Check the following items during periodic maintenance.
Before beginning inspection, be sure to turn off the power supply. Confirm that
all the indicators on the front panel have turned off, and then wait until at least
1 minute has elapsed before beginning the inspection.
Be sure not to touch the terminals right after the power has been turned off.
Otherwise, an electric shock may occur.
• The terminal screws of the Inverter should not loose.
• There should be no conductive dust or oil mist on the terminal block or
inside the Inverter.
• The mounting screws of the Inverter should not be loose.
• No dirt or dust should be accumulating on the radiation fin.
• No dust should be accumulating on the vents of the Inverter.
• There should be no abnormalities in the outward appearance of the
Inverter.
• There should be no unusual noises or vibration and the accumulated
operating time should not exceeded the specifications.
!
WARNING
!
WARNING
!
WARNING
!
WARNING
!
Caution
!
Caution