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FIREFINDER SERIES II
INSTALLATION,
COMMISSIONING
&
OPERATION
Stage 1 outputs are switched to +24VDC. (FIRE ALARM sign
illuminated, aural alarm sounds).
Stage 2 outputs are switched to +24VDC. (FIRE ALARM, EVACUATE & DO NOT ENTER
signs illuminated, aural alarm sounds).
Optional pre-release delay is started (Selected via FACP on-site programming).
The delay times out and if the Interlock signal is ON, the selected circuit will activate.
The Pressure Switch field input on the Termination Board is activated and the Agent
Discharge LED on the Agent Release Module and Local Control Station will be illuminated.
Activate gas-fired output.
Dual Zone Activation
,
if the first zone goes into alarm the following steps are initiated;
The automatic activation LED on the Agent Release Module and Local Control Station will
flash.
Stage 1 outputs are switch to
–24VDC. [FIRE ALARM sign illuminated, aural alarm sounds].
When the second zone goes into alarm, then the following steps occur;
Automatic activation LED goes steady.
Stage 1 outputs are switched to +24VDC. (FIRE ALARM & EVACUATE signs illuminated,
aural alarm sounds)
Stage 2 outputs are switched to +24VDC. (DO NOT ENTER sign illuminated)
Optional pre-release delay commences (Selected via FACP on-site programming).
The delay times out and if the Interlock signal is on the selected circuit will activate.
The Pressure Switch field input on the Termination Board is activated and the Agent
discharge LED on the Agent Release Module and Local Control Station will be illuminated.
Activate gas-fired relay output.
Service Inhibit Switch
The service inhibit switch is situated on the Agent Release Module when activated causes the
following;
Electrically isolates the activation circuitry from the agent release device.
Operates the System Inoperative output.
Note:
The service switch is
NOT
overridden by a manual discharge.
Lock-Off Valve
When the manual lock-off valve is operated;
The agent is blocked from reaching the release valve.
The lock-of
f valve inhibit indicator LED’s on the Agent Release Module and Local Control
Station are illuminated.
The system inoperative output operates.
Fault Monitoring
Fault conditions are initiated by:
The Pressure Switch monitoring circuit.
The Low Pressure Switch monitoring circuit.
The Lock-off Valve monitoring circuit.
Activation circuitry.
Stage 1 outputs. (Aural & visual discharge alarms).
Stage 2 outputs. (Aural & visual discharge alarms).