Chapter 6 Maintenance And Inspections - Watt Drive V2500 Series Manual

CHAPTER 6: MAINTENANCE AND INSPECTIONS
CHAPTER 6 MAINTENANCE AND INSPECTIONS
Modern AC drives are based on solid state electronics technology, preventive
maintenance is required to operate this AC drive in its optimal condition, and to ensure a
long life. It is recommended to perform a monthly check up of the AC drive by a qualified
technician. Before the check up, always turn off the AC Input Power to the unit.
at least 10 minutes after all display lamps have gone out, and then confirm that the
capacitors have fully discharged by measuring the voltage between B1 and Ground
using a multimeter set to measure DC.
6.1 Periodic Inspection:
Basic check up items to detect if there were any abnormality during the operation:
1. Whether the motors are operating as expected.
2. Whether the installation environment is abnormal.
3. Whether the cooling system is operating as expected.
4. Whether any irregular vibration or sound occurred during the operation.
5. Whether the motors are overheated during the operation.
6. Always check the input voltage of the AC drive with Voltmeter.
6.2 Periodic Maintenance
!
WARNING! Disconnecting AC power before processing!
1. Tighten and reinforce the screws of the AC drive if necessary, cause it may loose due to
the vibration or changing of temperatures.
2. Whether the conductors or insulators were corroded and damaged.
3. If use of the AC drive is discontinued for a long period of time, turn the power on at least
once every two years and confirm that it still functions properly. To confirm functionality,
disconnect the motor and energize the AC drive for 5 hours or more before attempting
to run a motor with it.
4. Clean off any dust and dirt with a vacuum cleaner. Place special emphasis on cleaning
the ventilation ports and PCBs. Always keep these areas clean, as accumulation of
dust and dirt can cause unforeseen failures.
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