Fujitsu PRIMERGY RX2540 M6 Upgrade And Maintenance Manual page 378

Liquid cooling (LC)
Figure 247: Installing the LC heat sink onto the CPU frame
▶ Place the LC heat sink onto the CPU frame.
▶ Prepare the second CPU and LC heat sink in the same way.
▶ Hold the complete LC kit with both hands and position it onto the CPU
sockets.
378 Upgrade and Maintenance Manual RX2540 M6