TM 55-1930-209-14&P-17
4-10.2 Normal operations
a.
Make sure flag in each of eight detection void modules shows NORMAL
b.
Make sure digital clock is operating as indicated by a flashing decimal point on numerical display.
c.
While smoke detector system is operating, periodically check indicator lights on smoke detector cabinet and listen
for buzzer and alarms.
4-10.3 Emergency procedures for smoke. When alarms sound, indicating smoke in one or more of the voids:
a.
Check if alarms are sounding due to a problem with the alarms by observing if ALARM BELL TROUBLE indicator
light in ZONE TROUBLE or any of the eight VOID MODULE TROUBLE indicator lights is on. If these lights are
on, follow procedures in paragraph 4-10.4. If not on, continue with next step.
b.
Determine the location generating smoke by checking VOID MODULE window and red SMOKE indicator light of
the eight void modules.
c.
Open olfactory valve and sniff air being discharged by blower to determine possible source of smoke.
d.
Activate emergency procedures as necessary. If fire is producing the smoke, use dry chemical portable fire
extinguishers in the voids or activate the Halon 1301 system for fires in void 4. See paragraph 4-8 to operate
Halon 1301 system and paragraph 4-11 to operate dry chemical fire extinguishers.
e.
Silence alarms by setting ALARM SILENCE/NORMAL switch to SILENCE. Both red ALARM and VOID MODULE
SMOKE indicator lights go out and amber ALARM SILENCE light comes on.
f.
Observe VOID MODULE window in detection module. When air is free of smoke, push blue RESET button to
reset smoke detector cabinet panel.
NOTE
When panel resets, trouble buzzer on detector cabinet will sound until ALARM
SILENCE/NORMAL switch is returned to NORMAL.
g.
Set ALARM SILENCE/NORMAL switch to NORMAL. Amber SILENCE indicator light goes out.
h.
Smoke detector system is now operating normally.
4-10.4 Emergency procedures for malfunctions. If smoke detector cabinet trouble buzzer sounds, do the following:
a.
Make sure blue POWER FAILURE indicator light comes on.
NOTE
When a power failure occurs, blue POWER FAILURE indicator lamp on smoke
detector cabinet comes on and trouble buzzer indicates that one of the following
has occurred: loss of main power, fuse opening or simultaneous failure of both
power supply no. 1 and power supply no. 2.
b.
Silence buzzer by setting POWER FAILURE SILENCE/NORMAL alarm switch to SILENCE.
c.
Make sure blue POWER FAILURE indicator light goes out and amber POWER FAILURE ALARM SILENCE
indicator light comes on.
d.
Troubleshoot as discussed in paragraph 4-18 to determine cause of failure.
NOTE
As soon as power is restored, trouble buzzer will sound.
e.
Silence buzzer by setting POWER FAILURE SILENCE/NORMAL switch to NORMAL Make sure amber POWER
FAILURE ALARM SILENCE indicator light goes out.
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