Fujitsu PRIMERGY RX4770 M5 Upgrade And Maintenance Manual page 166

Fans
Installing the new fan module
Figure 70: Installing the fan module
▶ Install the fan module in the fan bay and press down the fan module until it
locks.
Concluding steps
▶
"Reassembling" on page
When a system fan module fails, the remaining fans will start
operating at full speed. After the defective fan module has been
replaced, all fans will continue to run at full speed for a couple of
minutes, before resetting to a lower speed.
Ensure that all system fans reset to a normal operating speed.
▶
"Performing a fan test" on page
166
53.
118.
Upgrade and Maintenance Manual RX4770 M5