4.2.11 Wall MountingThe PBX can be mounted on a concrete wall using the optional wall mounting kit.WARNING• Make sure that the wall that the unit will be attached to is strong enough to supportapproximately 4 times the weight of the unit. If not, it is necessary for the wall to be reinforced.• When mounting the PBX on a wall, only use the wall-mounting equipment (anchor plugs,screws, metal brackets) included with the PBX and the wall mounting kit.• Be careful not to drop any components. Dropping components may damage them or cause aninjury.• Proper earthing (connection to earth) is very important to reduce the risk to the user ofelectrocution or to protect the PBX from the bad effects of external noise in the case of alightning strike. (See "4.2.4 Frame Earth Connection".)CAUTION• Make sure to install all necessary optional service cards in the PBX before performing the wall mountingprocedure. If it is necessary to install or remove a card, make sure to detach the PBX from the wallbefore installing or removing the card.• Do not block the openings of the PBX. Allow space of at least 20 cm above and 10 cm at the sides ofthe PBX.• Make sure that the surface behind the PBX is flat and free of obstacles, so that the openings on theback of the PBX will not be blocked.• Make sure that the surface behind the PBX is not made of wood.• If the PBX is not installed properly using the securing correct methods, the PBX may fall causing seriousdamage.• When placing the PBX onto the wall, make sure that the arrows on the metal brackets are pointingupward. If the arrows are not pointing upward, the PBX may fall, resulting in injury.• When driving the screws into the wall, be careful to avoid touching any metal laths, wire laths or platesin the wall.• When this unit is no longer in use, make sure to detach it from the wall.NoteFor details about dimensions and weight of the PBX, see "2.3.1 General Description".Necessary ItemsIncluded in the PBXScrew B 6Included in the wall mounting kit (KX-A247)Top Bracket 1Bottom Bracket 1Anchor Plug (For use in concrete) 4Screw A (For use in concrete) 4Installation Manual 874.2.11 Wall Mounting