5 Replace Cooling Fans and Circulation Fans
YASKAWA
TOEP C730600 0FA Fan Replacement Procedure
31
6.
Energize the drive and set
o4-03 = 0 [Fan Operation Time Setting = 0 h]
to reset the
cooling fan operation time.
◆
Replace a Fan (Procedure E)
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.
■
Remove the Cooling Fans
1.
Push the tabs on the back side of each fan finger guard and pull up to remove the fan
finger guards from the drive.
A - Fan finger guard
Figure 5.46 Remove the Fan Finger Guard
2.
Pull the cooling fans straight up from the drive. Remove the protective tubes on the
power supply connectors and disconnect the connectors to remove the fans from the
drive.
Note:
The number of fans is different for different drive models.