N93-586-84 Issue 04 AB Page 8 of 32 © Protec Fire Detection plc 2015
5.0 Installing the 3500
The 3500 may be surface or flush mounted (no extra bezel is required when flush mounting).
The 3500 circuit board is fully enclosed within a sealed control PCB housing. The control PCB housing must
not be opened. If the 3500 requires repair it must be sent back to the distributor from where it was
purchased.
The standby batteries are fully accessible with the control PCB housing removed from the enclosure.
The 3500 must be located internally in an area that is not subject to dampness, extremes of temperature or
physical abuse. The environmental limits are given in section 7.0
5.1 Unpacking
Carefully open the cardboard carton (do not use a sharp object) and remove the packing fitments,
manuals and spares pack.
5.2 Removal of the Door
Remove the 3500 from the packaging then, using a T15 Torx® type security tool, unscrew but do not
withdraw the fixing screw from the bottom of the panel housing front as shown in figure 5.0 (stage 1).
Slide the door upward from the bottom and pull away as shown in figure 5.0 (stages 2 and 3).
Put all removed parts in a safe, dry place.
Figure 5.0 Removing the 3500 door
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