Maintenance, Overhaul And Repair - E2S GNExB2X05 Series Instruction Manual

9.3 Unit Activation Mode - Pulsed or Latched,
Header Setting (H2)
The H2 header selection configures the beacon operation
depending upon the type of activation signal.
Option B is the factory default setting. The beacon visual
output will start when an initiation signal is received and will
not follow the telephone ringing cadence. See section 9.4
If the unit is set to Option A the beacon will not work
effectively.
9.4 Unit Latch mode duration DIP switch S1 setting
The relay/telephone latch duration setting is only applicable
when Header H2 is set to latched mode via header pin set to
position option B.
The beacon is activated on the first telephone ring (or
relay pulsed input) and any other subsequent inputs
and will remain activated for the duration as set by DIP
switch S1.
This feature is useful where some countries have short
ringing cadence with long off cycle times and the
customer requires the beacon to operate for longer
periods to better attract attention.
Where this feature becomes essential is for
telephone/relay activated beacons to function correctly
in these parameters.
Factory default for the relay/telephone latch duration switch
setting is 0000.
See table for DIP switch S1 delay timing.
Unit activation period DIP Switch S1 Setting
(s) from start of (0000) = All off
activation signal.
1.5 0000
2.0 1000
2.5 0100
3.0 1100
3.5 0010
4.0 1010
4.5 0110
5.0 1110
5.5 1111
European Safety Systems Ltd. Impress House, Mansell Road, Acton, London W3 7QH
Document No. D156-00-581-IS Issue 1 15-11-23

10) Maintenance, Overhaul and Repair

Maintenance, repair and overhaul of the equipment should
only be carried out by suitably qualified personnel in
accordance with the current relevant standards:
EN60079-19/IEC60079-19
Equipment repair, overhaul and reclamation
EN 60079-17/IEC60079-17 Explosive atmospheres -
Electrical installations inspection and maintenance
Units must not be opened while an explosive atmosphere is
present.
If opening the unit during maintenance operations a clean
environment must be maintained and any dust layer removed
prior to opening the unit.
Repair of the flameproof threaded joints and cemented joints
is not permitted.
Electrostatic charging hazard - Clean only with a damp cloth.
www.e2s.com
Explosive atmospheres
Tel: +44 (0)208 743 8880
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