Periodic Inspection and Maintenance88.4 Replace Cooling FansYASKAWA SIEPC71061753A GA500 Technical Manual 299◆ Replace the Cooling Fan (Procedure B)DANGER! Electrical Shock Hazard. Do not examine, connect, or disconnect wiring on an energized drive. Before servicing,disconnect all power to the equipment and wait for the time specified on the warning label at a minimum. The internal capacitorstays charged after the drive is de-energized. The charge indicator LED extinguishes when the DC bus voltage decreasesbelow 50 Vdc. When all indicators are OFF, measure for dangerous voltages to make sure that the drive is safe. If you do workon the drive when it is energized, it will cause serious injury or death from electrical shock. The drive has internal capacitors thatstay charged after you de-energize the drive.CAUTION! Burn Hazard. Do not touch a hot drive heatsink. De-energize the drive, wait for a minimum of 15 minutes, then makesure that the heatsink is cool before you replace the cooling fans. If you touch a hot drive heatsink, it can burn you.NOTICE: Use the instructions in this manual to replace the cooling fans. When you do maintenance on the fans, replace all thefans to increase product life. If you install the fans incorrectly, it can cause damage to the drive.■ Remove a Fan1. Push the tabs toward the back of the drive and pull up to remove the fan finger guard from the drive.A - Fan finger guardFigure 8.10 Remove the Fan Finger Guard2. Pull the cooling fan straight up from the drive. Disconnect the power supply connector and remove the fanfrom the drive.A - Cooling fanFigure 8.11 Remove the Cooling Fan■ Install the Cooling FansReverse the removal procedure to install a cooling fan.1. Connect the power supply connector between the drive and cooling fan.Figure 8.12 Connecting the power supply connector
