
Digibell Vandal Resistant System
PD-169 Issue 3B Installation Guide Page 55 of 56
Safety Information and Declarations
Connections to the 240VAC mains supply must be carried out by a qualified electrician or
similar competent person, and made in accordance with current legislative requirements. A
two pole switch (as provided by a Consumer Unit or Switch Fuse) must be included to isolate
both Live and Neutral during Installation or Maintenance. The circuit must be protected by a
fuse or other current limiting device, rated according to the capacity of the cable used, up to a
maximum of 10A. Use only mains cable to BS6004 or equivalent, within the following
specified limits:
Min Max
Conductor Diameter
1.0mm (0.8mm
2
)
2.25mm (4mm
2
)
Cable Diameter 4.0mm 8.0mm
Model 840 Power Supply (with battery standby)
The Model 840 power supply must be placed in a protected indoor environment such as an
electrical cupboard. It must be secured to the wall with adequate fixings so that there is no
possibility of it falling. The Lead acid battery for the standby power supply is shipped in
separate packaging. It should only be connected once the system has been fully tested.
Connection is made by 2 leads with spade terminals; observe the correct polarity - red to
positive, black to negative. Care must be taken to ensure that the terminals of the battery are
not shorted together by metal objects, as this may constitute a Fire Hazard. A good mains
safety earth must be connected to all sections of the enclosure.
Where the power supply is fitted with a replaceable internal mains fuse and or battery fuse,
always replace with the same type as indicated on the power supply. The fuse must be
approved to BS EN 60127 or equivalent.
Power Supply Model
Mains Fuse (Time Delay) Battery Fuse (Quick Blow)
840 T2A 20mm HBC (HRC) Ceramic
F4A 20mm Glass
Model PS4 Power Supply
These power supplies must be wall-mounted onto plasterboard, or a similar non-conductive
material, in a protected indoor environment such as an electrical cupboard. When fitting the
power supply cable (both mains and low voltage) ensure the cable entry cut-outs in the
enclosure lid are no larger than necessary for the cable diameter used and under no
circumstances must they be taken beyond the outer cut-out zones.
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