version 4.7.2 ā July 10th, 2022 Firmware version V2.1.7 and higher
EXXFIRE Installation and Service Manual 95
Fire Extinguishing
In order to start fire extinguishing the following conditions must be met:
1. An Alarm condition must be set either by the smoke detection system or by activation of the
Manual Activation Button (MAB)
2. Fire extinguishing must not be blocked by an Open Door Switch (see section 7.5)
3. The system must not be in TRIGGER DISABLED mode (see section 7.6)
4. The count down period after start of the Alarm condition has passed (see sections 7.3 and
7.4)
If all these conditions are met the system will start extinguishing the fire by releasing the nitrogen
gas:
1. During the gas release there will be a continuous beep that can be muted by pressing the
MUTE button on the UI panel and the GAS RELEASED LED will be blinking
2. There will be a delay between firing adjacent gas generators dependent on the chosen
release mode (see section 5.3)
3. After all generators have been fired the GAS RELEASED LED will be switched ON
continuously; the continuous beep will still be on and can be muted by pressing the MUTE
button on the UI panel.
4. The aspiration fan will be stopped in order to increase the HOLD time of the system, i.e. the
time that the oxygen level stays below a defined threshold value.
5. The cooling fan(s) of the system will be switched on in order to cool the gas generators as
they will get hot after gas release. The cooling fans will be switched off after 4 hours.
After the system has deployed its gas the system will show the following status:
1. The ALARM and GAS RELEASED LEDS are ON
2. In case the Alarm condition was set by the smoke detection system also the PRE-ALARM 1
and PRE-ALARM 2 LEDS are ON; in case the Alarm was activated by the MAB these two
PRE-ALARM LEDS will be OFF
3. The buzzer will be on (continuous beep) and can be muted
4. The cooling fan(s) will be on
Keep the system powered if possible and call your installer/distributor.
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