Ampac FireFinder PLUS, Установка, пусконаладка и эксплуатация

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Page 79
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Note #1: The common fault indicator on the Agent Release Module and Local Control Station
is illuminated for any Fault condition.

Note #2: For a pressure switch fault, low pressure switch fault, lock-off valve fault, stage 1
output fault, stage 2 output fault and interlock fault, the FACP will signal the brigade.

Note #3: When there is a fault in the activation circuit or in the trigger zones, in addition to the
above, the system inoperative output is operated.

Note #4: The FACP fault buzzer will sound for all faults.

Note #5: The FACP will report the type of fault on the LCD.
Isolation
If a trigger zone is isolated at the FACP the trigger zone isolated indicator at the Agent Release
Module and Local Control Station is illuminated, and the system inoperative output is operated.
System Inoperative Output
The system inoperative output is switched to +24VDC under the following conditions;
➢
Operation of the Service Switch.
➢
A Fault in the selected trigger circuit.
➢
Operation of the Lock-off valve.
➢
Operation of the Inhibit at an Local Control Station.
➢
A Fault in any of the activation zones.
➢
If any of the activation zones are isolated.
Manual Mechanical Release of the Agent
With agent release systems, a manual mechanical means can be provided to release the agent.
If the pressure switch is activated (indicating that the agent has been released), and the agent release
module has not activated the selected activation circuit, then the following will occur:
➢
Stage 1 output is switched to +24VDC and stage 1 relay is output closed
➢
Stage 2 output is switched to +24VDC and stage 2 relay output is closed
➢
Light the agent release led on the ACC and LCS
’s
➢
Activate gas-fired relay output
Monitoring of the Pressure Switch
Due to the requirements of Manual Mechanical Release of the Agent, the pressure switch input
conveys two pieces of information:
When the pressure switch input is active, it signals that the agent has been released. The release can
be as a result of the agent release module or due to a manual mechanical release.
When the pressure switch is not active, it signals that there is a full bottle of agent available to be
discharged.
In order for the agent release module to respond to a manual mechanical release, the pressure
switch must have been previously not active, to signify that a full bottle of agent is available