Fujitsu PRIMERGY CX400 M4 Upgrade And Maintenance Manual page 44

Basic hardware procedures
In addition, at least two people are needed when server enclosure is
installed in the height of 25U or more.
(for Japan, please refer to " 安全上のご注意 ".)
Additionally, a lifter is required in the following cases:
– The server weighs more than 50 kg.
– The server weighs more than 21 kg and is installed above the height
of 25 U.
When using a lifter, this removal procedure needs to be carried out by
maintenance personnel.
44
For configurations below 32 kg:
At least two people are needed to lift the server
out of the rack cabinet.
For configurations below 55 kg:
At least three people are needed to lift the server
out of the rack cabinet.
For configurations above 55 kg:
At least four people are needed to lift the server
out of the rack cabinet.
Upgrade and Maintenance Manual
CX400 M4