Komatsu 830E-AC Shop Manual page 806

What to Expect
When a fire suppression system discharges, there is
some noise, accompanied by clouds of dry chemical.
While breathing foreign particles is not pleasant, the
agent is non-toxic.
What to Do After the Fire is Out
The machinery should not be restarted until it has
been serviced and cleaned (water spray or steam
may be used to remove the dry chemical). If the elec-
tric detection and actuation system cannot be
recharged immediately, at least recharge the remain-
der of the fire suppression system so that manually
actuated protection is available.
Recharging the Electric Detection and Actuation
System
The recharge of the electric detection and actuation
system is similar to the original procedure for install-
ing and placing the automatic detection system into
service. Follow these procedures as outlined previ-
ously in this manual, omitting the section which deals
with mounting the bracket and power wire.
Replace the entire length(s) of detection wire
involved in the fire area.
Before the system is put back into service, it is impor-
tant that the inside chamber of the actuator be
cleaned thoroughly. Failure to do so may cause
excessive carbon build-up on the internal O-ring and
piston chamber. This build- up will also stop the
puncture pin from returning to its up-most position.
To clean actuator (See Figure 2-25):
1. Remove squib.
2. Remove actuator from bracket and loosen
upper portion of body.
3. Apply pressure to the bottom of the puncture
pin. This will force out the puncture pin and
spring.
4. Thoroughly clean carbon deposits from base of
stem, puncture pin, spring and inside surface of
body.
5. After all components are clean and dry, liberally
lubricate O-rings with silicone grease.
6. Reassemble actuator and push button manually
several times to insure free movement of punc-
ture pin.
NOTE: When puncture pin is fully reset, cutting point
of pin will be located approximately 0.06 in. (1.6 mm)
below thread on lower actuator body (Figure 2-25).
M2-12
FIGURE 2-25. ACTUATOR ASSEMBLY
Fire Control Systems M02005