Checkfire Electric Detection And Actuation System - Series 1 - Komatsu 930E-2 Shop Manual

CHECKFIRE ELECTRIC DETECTION AND ACTUATION SYSTEM - SERIES 1

The Checkfire Electric Detection and Actuation System
- Series 1 (Figure 2.3- 1) 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 insu-
lating coating of the cable melts allowing the conduc-
tors to short together closing the electric circuit to the
squib which detonates to depress the puncture pin and
actuate the expellant cartridge.
Components of the Checkfire Electric Detection and
Actuation System are shown in Figure 2.3-1.
Control Module (Figure 2.3-2):
Provides the electrical connections necessary be-
tween 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 button will illu-
minate the green indicator light if electrical power is
available in the system.
FIGURE 2.3-1. CHECKFIRE ELECTRIC DETECTION/ACTUATION SYS.
M02003
1. Control Module
2. Manual/Automatic Actuator
Ansul "Checkfire" Electric Detection and Actuation System
FIGURE 2.3-2. CONTROL MODULE
3. Linear Detection Wire
4. Power Wire
5. (Not Shown) Test Kit
M2.3-1