Maintenance
4
4.1 Replace Cooling Fans and Circulation Fans
YASKAWA TOEPC71061779E GA800 DRIVE INSTALLATION MANUAL
47
◆ Fan Replacement (Procedure C)
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 capacitor stays charged after the drive is de-energized. The charge indicator LED
extinguishes when the DC bus voltage decreases below 50 Vdc. When all indicators are OFF,
remove the covers before measuring for dangerous voltages to make sure that the drive is safe.
If you do work on the drive when it is energized, it will cause serious injury or death from electrical shock.
CAUTION
Burn Hazard
Do not touch a hot drive heatsink. De-energize the drive, wait for a minimum of 15 minutes, then
make sure 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 the fans to increase product life.
If you install the fans incorrectly, it can cause damage to the drive.
■ Fan Removal
1. To remove the fan finger guard from the drive, push the hooks on the left and right sides of it and pull up.
A - Fan finger guard
Figure 4.14 Remove the Fan Finger Guard
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