Periodic Inspection and Maintenance88.6 Storage GuidelinesYASKAWA SIEPC71061753A GA500 Technical Manual 3058.6 Storage GuidelinesThe chemicals in the electrolytic capacitors and other electronic parts of the drive change over time. When youstore the drive for long periods of time, use the information in this section to help keep the performance lifeestimates.◆ Storage Location• Temperature and HumidityWhen you store the drive for approximately one month, for example during shipping, you can put the drive in alocation where the temperature is -20 °C to +70 °C (-4 °F to +158 °F). Correctly package and store the driveduring shipping to prevent vibration and impact damage.Do not put the drive in direct sunlight or where there will be condensation or ice. Put the drive in a locationwhere the relative humidity is 95% or less.• Dust and Oil MistDo not keep the drive locations with dust or oil mist. For example, cement factories and cotton mills.• Corrosive GasDo not keep the drive in locations with corrosive gas. For example, chemical plants, refineries, and sewageplants.• Salt DamageDo not keep the drive in salty locations. For example, locations near the ocean, and salt damage-designatedlocations.Do not keep the drive in unsatisfactory locations. Keep all drives in storage rooms that are safe fromunsatisfactory elements.◆ Regular Application of PowerTo prevent deterioration of the capacitors, Yaskawa recommends that you apply power to the drive a minimum ofone time each year for a minimum of 30 minutes.If you store the drive for longer than two years and do not apply power, Yaskawa recommends that you use avariable power source and gradually increase the power from 0 V to the rated drive voltage over a period of 2 to 3minutes. Apply power for a minimum of 1 hour with no load to reform the main circuit electrolytic capacitor.When you operate the drive after you apply power, wire the drive correctly and check for drive faults,overcurrents, motor vibration, motor speed differences, and other defects during operation.A - AC power supplyB - Variable power sourceC - DriveFigure 8.24 Power Distribution Method
