Fan Replacement (Procedure D) - YASKAWA CR700 Technical Manual

7.4 Replace Cooling Fans and Circulation Fans

Fan Replacement (Procedure D)

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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
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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
2.
Pull the cooling fans straight up from the drive. Disconnect the relay connectors and remove the fans from
the drive.
A - Cooling fans
Fan Installation
■
Reverse the removal procedure for fan installation.
1.
Connect the relay connectors between the drive and cooling fans.
396
Figure 7.20 Remove the Fan Finger Guard
Figure 7.21 Remove the Cooling Fans
Figure 7.22 Connect the Relay Connectors
YASKAWA SIEPC71061723A YASKAWA AC Drive CR700 Technical Manual