Operation; Control Module; Indicators - Atlas Copco PNS 1250 Cud S3A/T3 APP Instruction Manual

5.3.2 Operation

The fire suppression system is equipped with a
manual and automatic activation.
The automatic activation detects a fire via a heat
sensitive wire. As soon as a fire is detected, the
control module (1) shuts down the compressor. After
a delay of 30 seconds the automatic actuator (8)
releases a small nitrogen cartridge (6), by which the
larger nitrogen bottle (3) is released. The compressed
gas will blow the extinguishing powder from cylinder
(2) through the nozzles (7) into the engine
compartment.
The manual activation is a push button (4) on the
outside of the compressor. Removing the lock pin and
pushing the button releases a separate nitrogen
cartridge (5) which activates the powder release and
shuts down the machine
The automatic fire suppression system is directly
powered by the compressor batteries.

5.3.3 Control module

The automatic fire suppression installation is
constantly monitored by a control module. It is
powered by an internal battery.
A number of LED's indicate the system status.
2
3
4
5
6
1 Power 5 Release
2 Battery 6 Delay
3 Alarm 7 Reset
4 Detection
- 50 -
Staff that are not familiar with this
!
system are not allowed to run checks
on the system. Wrong handling may
lead to an inactive system or release
of extinguishing powder.
All repairs have to be done by
authorized personnel.

5.3.3.1 Indicators

1. POWER
1
LED pulses every three seconds when indicating
normal power. If the power drops below an
acceptable level of either the internal or external
power source, the green POWER LED will be
7
extinguished.
2. BATTERY
LED pulses every 10 seconds when low power
condition is detected from either the internal or
external power source. Please check the system and
restore power supply.
3. ALARM
The alarm LED will flash in case of an alarm
condition. An alarm condition is caused by detection
circuit activation.