Using a suitable meter or test light,
check for continuity at wire connections when blackout
warning switch is depressed.
Removal. Remove blackout warning
buzzer as follows: (a) Position blackout buzzer circuit
breaker in main power service box to off.
Tag and disconnect two wires at the
Remove the screws which attach
the buzzer base to the outlet box on the shelter wall and
remove the base.
Repair. Repair of the blackout warning
buzzer consists of replacement.
Installation. Install the blackout buzzer
Position new buzzer base on the
box and secure with attaching screws.
Connect two wires at the buzzer
base and remove tags.
buzzer cover on the buzzer base and secure with
breaker in main power service box to on.
Depress blackout warning switch
and ensure that buzzer operates correctly.
Blackout Warning Switch.
Inspection. If the blackout warning
buzzer is not activated when the switch is depressed,
inspect/test the switch as follows: (a) Remove three
nuts, lockwashers and bolts that secure the cover to the
housing. Loosen the fourth nut and allow the cover to
swing down. (See fig. 12-2.)
Figure 12-2. Blackout Warning Switch, Removal and Installation