Komatsu 830E-AC Shop Manual page 800

Actuator
(Figure 2-6)
Provides automatic and manual means of fire sup-
pression system actuation. By pulling the ring pin
under the knob and then depressing the red knob,
the puncture pin will rupture the diaphragm in the
actuator and apply the system. Automatically, the
squib is fixed to rupture the cartridge disc when the
linear detection wire is exposed to temperatures in
excess of its rated range.
FIGURE 2-6. MANUAL/AUTOMATIC ACTUATOR
Linear Detection Wire
(Figure 2-7)
Consists of a two conductor heat rated thermo cable.
The temperature rating of the cable is 105°C (221°F)
using black wire or 180°C (356°F) using red wire.
When the cable is subjected to temperatures in
excess of this rating the insulating coating melts
allowing the conductors to short together, closing the
actuating circuit to fire the squib.
FIGURE 2-7. LINEAR DETECTION WIRE
Power Wire
(Figure 2-8)
Consists of a battery connector and conductor lead
wires to connect the actuation system to the truck
electrical system (battery circuit). The battery con-
nector is equipped with a 5 ampere in line fuse
(replaceable).
M2-6
1. Indicator Light Assembly
2. End-of-Line Detection Wire Jumper Assembly
Test Kit
(Figure 2-9)
Provides for checking of electrical continuity and con-
sists of an indicator light assembly and an End-of-
Line linear detection wire jumper assembly.
Squib
(Figure 2-10)
Is an electrically detonated component containing a
small exact charge of powder. When the actuation
circuit is closed by the linear detection wire melting,
an internal wiring bridge in the squib heats up caus-
ing the power charge to detonate, forcing the punc-
ture pin to rupture the cartridge disc to release the
nitrogen gas charge.
Fire Control Systems
FIGURE 2-8. POWER WIRE
FIGURE 2-9. TEST KIT
FIGURE 2-10. SQUIB
M02005