Brooks ALARM 2000 - Gas Shutdown Module Testing; Power Supply Supervision Module

Site Manual
Alarm 2000 Iss 5
39
 To re-activate the mains power to the emergency lights and terminate the
test, press & hold the emergency lighting AUTO/TEST button until the
amber LED extinguishes (approximately 5 seconds).
3. Press and release the Heating / Cooling AUTO/OFF button:
 The amber LED integral to the switch illuminates.
 The control relays energise and turn off the mains power to the Heating /
Cooling system, which shuts down the air conditioning.
 To re-activate the mains power to the Heating / Cooling system.
Press & hold the Heating/Cooling AUTO/OFF button until the amber LED
extinguishes (approximately 5 seconds).
5.5.3.7 Gas Shutdown Module Testing:
1. Simulate Sprinkler alarm activation (-Ve switching) to the alarm input of the gas
shutdown module:
 24V
DC
power to main gas valve turns off
 “Main Valve Open” LED extinguishes
 “Gas Pressure Fault” LED illuminates
Note: Now the DC supply to the main gas valve remains off even when the
sprinkler alarm restores. To re-initialise the system, go to step 2
2. Press and hold the “Reset” button:
 The 24V
DC
power will be available to the by-pass valve
 The by-pass valve opens and pressurise the gas until the main valve opens.
Once the main valve be opened i.e. the green main valve open LED
illuminates, at this moment release the Reset button
 Gas pressure fault LED extinguishes
3. Press “Gas Test” button (simulate alarm input):
 “Gas Test” LED illuminates
 Repeat as per step 1
 Restore the switch and repeat as per step 2
4. Press “Gas Isolate” button:
 “Gas Isolate” LED illuminates
 24V
DC
supply to the main valve is guaranteed even when the sprinkler is
activated.
Note: Gas Isolate facility is used so maintenance of the sprinkler system can
be performed.
5.5.3.8 Power Supply Supervision Module:
The Power Supply Supervision Module is tested and set up in the factory, no further
adjustments or testing required in the field.
LED’s Normal Status
 LD1 Mains on – ON
 LD2 Auto test Running – OFF
 LD3 Battery isolate – OFF
 LD4 Auto test inhibited – OFF
 LD5 Power fail (relay output) – ON
 LD6 Power supply fault open collector (to RFP) – OFF
 LD7 Power supply fault (Relay output) - ON
Charger and Battery threshold:
 Normal 27.5V
 Charger high 28.2V