6.2 InspectionYASKAWA TM.V1000.01 V1000 Drive Installation & Start-Up Manual (Preliminary 01-19-07) 273Periodic Inspection &Maintenance6◆ Recommended Daily InspectionTable 6.1 outlines the recommended daily inspection for Yaskawa drives. Checkthe following items on a daily basis to avoid premature deterioration inperformance or product failure. Copy this checklist and mark the “Checked”column after each inspection.Table 6.1 General Recommended Daily Inspection Checklist◆ Recommended Periodic InspectionTable 6.2 outlines the recommended periodic inspections for Yaskawa driveinstallations. Periodic inspections should generally be checked every 3-6 months;however, the drive may require more frequent inspection due to poor environmentsor rigorous use. Operating and environmental conditions, along with experience ineach application, will determine the actual inspection frequency for eachinstallation. Periodic inspection will help to avoid premature deterioration inperformance or product failure. Copy this checklist and mark the “Checked”column after each inspection.InspectionCategory Inspection Points Corrective Action CheckedMotor • Inspect for abnormal oscillation or noisecoming from the motor.• Check the load coupling• Measure motor vibration• Tighten all loose componentsCooling• Inspect for abnormal heat generatedfrom the drive or motor and visiblediscoloration.• Check for excessive load• Loose connections• Check for dirty heatsink or motor• Ambient temperatureEnvironment• Verify the drive environment complieswith the specifications listed in theInstallation section of this manual.• Eliminate the source of contaminantsor correct poor environment.Load• The drive output current should not behigher than the motor or drive rating foran extended period of time.• Check for excessive load.• Check the motor parameter settings ofthe drive.Cooling • Inspect drive cooling fan operation. • Check for clogged or dirty fan.• Check fan operation drive parameter.Power SupplyVoltage• Check main power supply and controlvoltages.• Correct the voltage or power supply towithin nameplate specifications.• Verify all main circuit phases.
