YASKAWA GA800 Series, Техническое обслуживание и устранение неисправностей, Страница: 40 / 566

1.4 Replace Cooling Fans and Circulation Fans
40 YASKAWA TOEPYAIGA8001B GA800 Drive Maintenance & Troubleshooting
5.
Push the hooks on the left and right sides of the fan finger guard and click it into place on the drive.
Figure 1.32 Reattach the Fan Finger Guard
6.
Energize the drive and set o4-03 = 0 [Fan Operation Time Setting = 0 h] to reset the fan operation time.
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Fan Replacement (Procedure F)
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.
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Fan Removal
1.
To remove the fan finger guards from the drive, push the hook on the back side of each guard and pull up.
A - Fan finger guards
Figure 1.33 Remove the Fan Finger Guards
2.
Pull the cooling fans straight up from the drive. Disconnect the relay connectors and remove the fans from the
drive.
Note:
The number of fans is different for different drive models.
A - Cooling fans
Figure 1.34 Remove the Cooling Fans