User Manual

AS4000 Release3 and Release 4 Central
Terminal Installation and Commissioning
DLP-002
605-0000-432
Issue 1.3a Date 18th October 1999
Page 3 of 4
12mm Bolt and Washer
12mm Screw and Washer
150mm
300mm
Rack Earth Point
Figure 4 Securing a AS4000 Release 3 rack to a wall
Using an 11mm. drill bit, drill holes in the wall to a depth of 75mm. and fit
masonry plugs. Fix the hex head screws through the brackets and finger
tighten. Check that the rack is in the correct position and tighten all fixings.
Attention should be paid to the fabric of the wall. Where possible, drill directly
into the brick and not into mortar. With panelled or partitioned walls,
instruction should be taken locally as to how the rack is to be secured. See site
survey.
2. Rack Earthing
Using the site survey, locate the building central [safety] grounding point. Run
an earth cable rated at 30A. and connect it to the centre earth stud located at
the top or bottom of the ETSI rack only. See Figure 4. These points are
labelled with the IEC Earth symbol. .
Warning: No other external safety earth connection shall be made to the
rack. The two studs located towards the sides at the top of the rack are
used for earth bonding the side and rear panels to the rack and must be left
untouched to maintain the systems safety earthing integrity