TM 10-3610-203-14CHAPTER 13REPAIR OF BLACKOUT WARNING SYSTEM13-1. GeneralThe blackout warning system is intended to warn personnel in the shelter to turn off the lights in the shelter before theshelter door is opened during a blackout. The system consists of a blackout warning buzzer, located directly above theelectrical control box against the inside of the right-hand rear wall, and a blackout buzzer warning pushoutton located onthe rear outside wall to the left of the shelter door.13-2. Blackout Warning Buzzera. Blackout Warning Buzzer.(1) Inspection. If the blackout warning buzzer is not activated when the switch is depressed, inspect/test the buzzeras follows:(a)Position blackout buzzer circuit breaker in main power service box to on.(b)Remove the screws that attach the buzzer cover to the base and remove the cover. (See fig. 13-1).Figure 13-1. Blackout Warning Buzzer, Removal and Installation.13-1
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