NEC S2500 User Manual page 92

8. Install the rack nut at the position shown in the figure below (or the hole just above the set
screw the first hole of the top of the rail).
Rack nut
9. Lift the unit, put the rear section on the rails, and push it into the rack.
NOTE: The unit is very heavy. It is recommended that 3 people
assist in lifting and installing the unit. If less than three persons
are involved, personal injury may occur. Be careful not to
drop the unit while lifting.
Insert
D-16