What To Expect; What To Do After The Fire Is Out; Recharging The Electric Detection And Actuation System; Actuator Assembly - Komatsu 930E-2 Shop Manual

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 Electric Detec-
tion and Actuation System cannot be recharged imme-
diately, at least recharge the remainder of the fire
suppression system so that manually actuated protec-
tion 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 installing
and placing the automatic detection system into serv-
ice. Follow these procedures as outlined previously 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 upmost position.
To clean actuator (See Figure 2.3-22):
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 buttom manually
several times to insure free movement of puncture
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 2.3-22).
M2.3-8 Ansul "Checkfire" Electric Detection and Actuation System
FIGURE 2.3-22. ACTUATOR ASSEMBLY
M02003