Fire Mode: Lhd Installations - JSG M2AP01 Operation & Installation Manual

FIRE MODE: MUSTERWIRE LHD INSTALLATIONS
In MusterWire LHD installations the Alarm Panel will detect a fire if any of the following conditions are met:
Automatic activation of the MusterWire Linear Heat Detection as a result of excessive heat.
Manual activation of a Remote Actuator (M2RA01) attached to the detector circuit.
Manual activation of the FIRE button on the panel itself.
Once activated the Alarm Panel goes through a strict sequence of events as follows:
1. The release solenoid is activated and remains activated for a period of 4 seconds. This triggers the release of
the Cylinder Valve (M2VA01) which will continue to discharge without further action from the Alarm Panel. The
DISCHARGED LED will flash during the four seconds that the solenoid is activated.
2. The ALARM relay contacts are activated.
3. The buzzer and FIRE indicator goes into a ½ second on – ½ second off cycle.
4. If the SHUTDOWN delay is set to 0 seconds the SHUTDOWN relay will activate immediately, otherwise the
SHUTDOWN delay timer starts to count down from its set value (see SETUP).
5. After the 4 second activation of the release solenoid the Alarm Panel will continue to monitor the pressure in the
system and the DISCHARGED led will only be lit once the pressure drops below 3 bar.
6. Step 6 is skipped if the SHUTDOWN delay is set to 0 seconds:
5 seconds before actual SHUTDOWN the buzzer and FIRE indicator change to a ¼ second on – ¼ second off cycle
to indicate the impending shutdown. At any stage during the SHUTDOWN delay the operator can press the DELAY
SHUTDOWN button to extend the delay by a further 6 seconds. This can be done a maximum of twice. After the
SHUTDOWN delay is over the SHUTDOWN relay is energized and if this circuit is used the machine will shut down
permanently. The buzzer and FIRE indicator will revert to a ½ second on – ½ second off cycle.
7. 5 seconds after shutdown the delay button can be held down and the machine can be started and relocated.
Once the button is released the machine will shutdown instantly. Repairs to the fire suppression system should be
completed first before the use of this function.
8. 15 minutes after detection of a FIRE the Alarm Panel will go into a low power mode where the buzzer and FIRE led
will only flash briefly every three seconds.
EXITING FIRE MODE & RELEASING THE SHUTDOWN RELAY (MusterWire LHD systems)
After a fire event the Alarm Panel remains in FIRE mode and the SHUTDOWN relay remains energized. The TEST button
serves no purpose. To exit FIRE mode the following procedure must be followed:
1. Using a Hex Key, remove (for a minimum of 5 seconds) and then re-install the Alarm Panel face. This will release the
SHUTDOWN relay.
2. Any manual call points that have been activated must be reset and any activated Linear Heat Detection wire
(MusterWire) must be replaced to ensure there is no signal (closed circuit) on the detection circuit.
3. Press the TEST button to reset the Alarm Panel. If the Alarm Panel still detects a signal (closed circuit) on the
detection circuit it will not reset – see step 2 above.
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