Dismounting the fan
↻
Replace fan time requirement: (10 min each fan) 30 min
↻
It has been ensured that there is no AC/DC voltage present.
↻
DANGER! Risk of injury from starting fans: If the device is not com-
pletely disconnected from the voltage source, the fan may start up
unexpectedly and sever or injure limbs. This may also cause damage
to the fan and impair the functionality of the device.
↻
Cover hood for fans removed.
1. Wait until the 3 fans have stopped rotating.
2. Rotate the defective fan through approx. 10° in the clockwise direction and re-
move it carefully using the collar.
3. Release the interlock and remove the connector plug from the inside of the
housing.
4. Remove the fan.
5. If necessary, clean the heat sink from above.
ð
Install the replacement fan.
1
2
Fig. 74:
Removing the fans
1 Fans
2 Connector
Fitting the cover
↻
The fan has been correctly installed and all impurities in the area of the cover
have been removed.
1. Lift up the cover from both sides, place it on the mounting clips and carefully
press it in.
2. Insert the fastening screws into the cover on both sides and tighten them [
_T20 / 17.70 In-Ibs ].
ð
You may now start up the device [See section 8
2
Fig. 75:
Fitting the cover
2 Fastening screw
11.4
Shutting down for maintenance / troubleshooting
NOTE: Shutdown sequence
1. If possible, shut down the device via EMS.
2. Switch off the grid voltage by turning off the external circuit breakers.
3. Enable the DC side via the external DC switch.
ð
After shutdown, wait 5 minutes before opening the device.
Shutdown sequence
1. Switch off the grid voltage by turning off the external circuit breakers.
2. Disconnect the DC side using the DC isolator switch.
.
DANGER! The DC cables are still live
ð
After shutdown, wait 5 minutes before opening the device.
Manual
Maintenance and troubleshooting | 11
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