F 29 mm (1-9 / 64 in)3. Fit the washers on the screws, and drive the screws into the anchor plugs.Drive the screw to this point.Note• As indicated above, do not tighten the screw fully.• The pull-out strength of the installation area must be at least 294 N (30 kgf) per screw.• Do not block the operations of the cabinet. Allow space of at least 20 cm (8 in) above, 10 cm (4in) at the sides, and 10 cm (4 in) below the PBX.• Make sure that screw heads are the same distance from the wall.• Install the screw perpendicular to the wall.• Be careful not to drop the cabinet.4. Hook the main unit on the screw heads.3.2.9 Surge Protector InstallationCAUTIONPerforming surge protection is essential. Make sure to follow the instructions in this section.OverviewA massive electrical surge can be caused if lightning strikes a telephone cable 10 m (33 ft) above ground, orif a telephone line comes into contact with a power line. A surge protector is a device that is connected to atrunk to prevent potentially dangerous electrical surges from entering the building via the trunk and damag-ing the PBX and connected equipment.3.2.9 Surge Protector Installation56
