Nortel Meridian 1 Succession 1000M Installation And Configuration Manual page 119

Simultaneously slide both latches in towards the center of the cabinet.
Grasp the sides of the cover and pull the top outwards, then lift it upward
to remove it from the cabinet.
Note: The bottom of the front cover is supported but not secured to the
cabinet. Be careful not to drop it.
Figure 35
Unlocking the latches
7 Remove the metal drip tray.
Check the wrist strap in the bottom right of the cabinet. It may have come
loose during transit. If so, attach it to the Velcro tab on the inside right wall
of the cabinet.
WARNING
An empty cabinet weighs 25 lb (12 kg). Get help to lift the
cabinet if necessary.
8 Lift the cabinet and hang it on the mounting bracket hook.
Mounting the cabinets
Small System Installation and Configuration
Page 119 of 562