Clock hi speed
Release switch to return system to normal operation. If trouble is indicated, troubleshoot
according to TM 55-1930-209-14 & P-17.
Smoke detector system is now operational
4-8 Normal operations.
Make sure flag in each of eight detection modules shows NORMAL.
Make sure digital clock is operating as indicated by a flashing decimal point on numerical display.
While smoke detector system is operating, periodically check indicator lights on smoke detector cabinet
and listen for buzzer and alarms.
4-9 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 amber ALARM BELL TROUBLE
indicator light in ZONE TROUBLE or any of the eight void module TROUBLE indicator lights are on. If
these lights are on, follow procedures in paragraph 4-11. If not on, continue to next step.
Determine location generating smoke by checking void module windows and red SMOKE INDICATOR
light of eight void modules.
Open olfactory valve and sniff air being discharged by blower to determine possible source of smoke.
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
TM 55-1930-209-14 & P-17 to operate the Halon 1301 system and the dry-chemical fire extinguisher.
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 indicator light comes on.
Observe void module window in detection module. When air is free of smoke, push blue RESET button
to reset smoke detector cabinet panel.
When panel resets, trouble buzzer on detector cabinet will sound until ALARM
SILENCE/NORMAL switch is returned to NORMAL.
Set ALARM SILENCE/NORMAL switch to NORMAL. Amber SILENCE indicator light goes out.
Smoke detector system is now operating normally.
4-10 Emergency procedures for malfunctions. If smoke detector cabinet trouble buzzer sounds, do the following:
Make sure blue POWER FAILURE indicator light comes on.
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.
Silence buzzer by setting POWER FAILURE SILENCE/NORMAL switch to SILENCE.