AutomationDirect DURAPULSE GS3-2010, User Manual

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Chapter 6: Maintenance and Troubleshooting
6–2 DURA
PULSE AC Drive User Manual 1st Ed. Rev. D 05/2013
Maintenance and Inspection
Modern AC drives are based on solid state electronics technology. Preventive
maintenance is required to operate the AC drive in its optimal condition, and to
ensure a long life. We recommend that a qualified technician perform a regular
inspection of the AC drive. Some items should be checked once a month, and
some items should be checked yearly.
Monthly Inspection
Check the following items at least once a month.
1. Make sure the motors are operating as expected.
2. Make sure the installation environment is normal.
3. Make sure the cooling system is operating as expected.
4. Check for irregular vibrations or sounds during operation.
5. Make sure the motors are not overheating during operation.
6. Check the input voltage of the AC drive and make sure the voltage is within the
operating range. Check the voltage with a voltmeter.
Annual Inspection
Check the following items once annually.
1. Tighten and reinforce the screws of the AC drive if necessary. They may loosen
due to vibration or changing temperatures.
2. Make sure the conductors and insulators are not corroded or damaged.
3. Check the resistance of the insulation with a megohmmeter.
4. Check the capacitors and relays, and replace if necessary.
5. Clean off any dust and dirt with a vacuum cleaner. Pay special attention to
cleaning the ventilation ports and PCBs. Always keep these areas clean.
Accumulation of dust and dirt in these areas can cause unforeseen failures.
6. Recharge the capacitors of any drive that is in storage or is otherwise unused.
Recharge Capacitors (for unused drives)
Recharge the DC link before using any drive that has not been operated within a
year:
1. Disconnect the motor from the drive.
2. Apply input power to the drive for 2 hours.
WARNING! Disconnect AC power and ensure that the internal capacitors have fully
discharged before inspecting the AC drive!
Wait at least two minutes after all display lamps have turned off.
If the drive is stored or is otherwise unused for more than a year, the drive’s internal DC
link capacitors should be recharged before use. Otherwise, the capacitors may be
damaged when the drive starts to operate. We recommend recharging the capacitors
of any unused drive at least once per year.