7.4 Cooling Fan and Circulation FanYASKAWA ELECTRIC SIEP C710616 27G YASKAWA AC Drive A1000 Technical Manual 397Periodic Inspection &Maintenance7 Installing the Cooling Fan Unit1. Reverse the procedure described above to reinstall the cooling fan unit.Figure 7.31Figure 7.31 Installing the Cooling Fan Unit: 4A04142. Reattach the covers and digital operator.3. Turn the power supply back on and reset the cooling fan operation time for the Maintenance Monitor by settingo4-03 to 0. Cooling Fan Replacement: 4A0515 and 4A0675WARNING! Electrical Shock Hazard. Do not connect or disconnect wiring while the power is on. Failure to comply can result in seriouspersonal injury. Before servicing the drive, disconnect all power to the equipment. The internal capacitor remains charged even afterthe power supply is turned off. After shutting off the power, wait for at least the amount of time specified on the drive before touchingany components.CAUTION! Burn Hazard. Do not touch a hot drive heatsink and a fan unit. Failure to comply could result in minor or moderate injury.Shut off the power to the drive when replacing the cooling fan. To prevent burns, wait at least 15 minutes and ensure the heatsink andthe fan unit have cooled down.NOTICE: Prevent Equipment Damage. Follow cooling fan and circulation fan replacement instructions. Improper fan replacementcould result in damage to equipment. When installing the replacement fan into the drive, make sure the fan is facing upwards. Toensure maximum useful product life, replace all fans when performing maintenance. Removing and Disassembling the Cooling Fan Unit1. Remove the terminal cover and front cover 1 and 2.Refer to Removing the Terminal Cover on page 69 for detail.CAUTION! Crush Hazard. Do not completely remove the cover screws, just loosen them. If the cover screws are removed completely,the terminal cover may fall off causing an injury. Take special care when removing/reattaching the terminal covers for larger drives.2. Remove the connectors for the cooling fan relay and the circuit board cooling fan.Figure 7.32Figure 7.32 Component Names: 4A0515 and 4A0675A – Fan Unit E – HookB – Fan Relay Connector F – Circuit Board Cooling Fan ConnectorC – Circuit Board Cooling Fan G – Circuit Board Cooling Fan CableD – Circuit Board Cooling Fan CaseABDCFF GE E
