Fujitsu PRIMERGY GX2560 M7 Upgrade And Maintenance Manual page 186

Processor (CPU)
Installing the heat sink
▶ If applicable, remove the heat sink from the protective cover.
▶ If using a heat sink again, clean residual thermal paste from the heat sink
surface using a lint-free cloth.
Figure 135: Installing the CPU frame on the heat sink
▶ Place the CPU frame onto the heat sink.
Ensure that the triangle marks on the heat sink and on CPU frame are on
the same edge.
186 Upgrade and Maintenance Manual GX2560 M7