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CHECKFIRE ELECTRIC DETECTION AND ACTUATION SYSTEM - SERIES 1
The Checkfire Electric Detection and Actuation Sys-
tem - Series 1 (Figure 2-5) uses linear detection
wire. This is a two conductor heat rated thermo
cable. When the detection cable is subjected to
221°F (105°C) the insulating coating of the cable
melts allowing the conductors to short together clos-
ing the electric circuit to the squib which detonates
to depress the puncture pin and actuate the expel-
lant cartridge.
Components of the checkfire electric detection and
actuation system are shown in Figure 2-5.
Control Module
(Figure 2-4)
Provides the electrical connections necessary
between the power lead and the linear detection
wire to the power lead supplying electrical power,
via the squib, to the actuator. Also provides a visual
check of power availability - pressing the switch but-
ton will illuminate the green indicator light if electri-
cal power is available in the system.
FIGURE 2-5. CHECKFIRE ELECTRIC DETECTION/ACTUATION SYSTEM
1. Control Module
2. Manual/Automatic Actuator
M02005
FIGURE 2-4. CONTROL MODULE
3. Linear Detection Wire
4. Power Wire
Fire Control Systems
5. Test Kit (Not Shown)
M2-5
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