Ampac SP Series, Installation, Commissioning & Operation

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FireFinder
™
Installation Commissioning & Operation
Page 51
If the lock-off valve or service inhibit is activated to the ON position during the sequence, then the
sequence is aborted. This means the automatic activation indicators at the ACC and LCSs are
extinguished and the Stage 1 and Stage 2 outputs are switched OFF. The system inoperative output is
also be activated.
If the trigger zone is isolated during the sequence, then the sequence is aborted. This means the automatic
activation indicators at the ACC and LCSs are extinguished and the Stage 1 and Stage 2 outputs are
switched OFF and, the system inoperative output shall be activated and the trigger zone isolated indictor is
illuminated
If the lock-off valve or service inhibit switch is operated after the agent has been released then there is no
effect on the stage 1 and stage 2 outputs and the selected activation circuit. The system inoperative output
shall be activated
If the trigger zone is isolated after the agent has been released, there is no effect on the stage 1 and stage
2 outputs and the selected activation circuit. The system inoperative output shall be activated and the
trigger zone isolated indicator shall be lit.
Dual Zone Activation , if the first zone goes into alarm the following steps are initiated;
1.
The automatic activation LED on the Agent Release Module and Local Control Station will flash.
2.
Stage 1 output is switch to –24VDC, and the stage 1 relay output is closed
When the second zone goes into alarm, then the following steps occur;
1.
Automatic activation LED goes steady.
2.
Stage 1 outputs are switched to +24VDC.
3.
Stage 2 outputs are switched to +24VDC and Stage 2 relay output is closed.
4.
Optional pre-release delay commences ( selected via FACP on-site programming ).
5.
Upon expiration of the delay and the interlock signal is on the selected circuit is then activated. If the
interlock is in fault, then the agent will be released if the interlock signal is not asserted within 10
seconds.
6.
The agent release LED on the ACC and LCSs is illuminated when the pressure switch input on the
termination card is activated or immediately depending on the pressure switch configuration – refer
to FACP on-site programming).
7.
The gas-fired relay output is activated.
8.
When the FACP reset control is activated – the automatic activation indicator, agent discharge
indicator, stage 2 timer running are extinguished, and the stage 1, stage 2, selected activation circuit
and gas fired output are switched off (to 0VDC).
General Conditions
If the agent select button is operated at the ACC once the agent has been released, then the newly
selected activation circuit is operated immediately.
If one of the two trigger zones is isolated during the sequence, then the Stage 2 outputs are switched OFF,
the Stage 1 switch positive output is switched to -24VDC and the automatic activation indicator
commences to flash.
If both of the two trigger zones are isolated during the sequence, then the Stage 1 and Stage 2 outputs are
switched OFF, and the selected activation circuit is switched OFF. The system inoperative output is
activated. The trigger zone isolated indictor shall be illuminated.
If the lock-off valve or service inhibit switch is activated to the ON position during the sequence, then the
sequence is aborted. This means the automatic activation indicators at the ACC and LCSs are
extinguished and the Stage 1 and Stage 2 outputs are switched OFF. The system inoperative output is
activated.
If one or both of the two trigger zones are isolated after the agent has been released, then there is no
effect on the stage 1 and stage 2 outputs and the selected activation circuit. The system inoperative output
is activated and the trigger zone isolated indicator is illuminated.
If the lock-off valve or service inhibit switch is operated after the agent has been released then there is no
effect on the stage 1 and stage 2 outputs and the selected activation circuit. The system inoperative output
is activated