TM 55-1930-209-14&P-17
c.
Pull on safety chain on control head on top of active cylinder, on port bulkhead aft of switchboard, and then move
activation handle 90 (Figure 4-9).
NOTE
When one of these handles is pulled, it activates two warning horns (one on each
side in voids 4), turns off voids ventilation system, and starts a 20-second delay
mechanism. After this delay, Halon is automatically discharged from nozzles on
ceiling of both voids 4.
WARNING
When warning horn sounds in voids, personnel must immediately:
(1)
Close hatch between voids 4 and 3.
(2)
Leave door open between starboard and port voids 4.
(3)
Close hatch to void 5.
(4)
Evacuate the voids.
WARNING
Halon system is designed to extinguish any class A, B, and C fires in voids 4 only
if hatch between starboard and port voids is OPEN and hatches to voids 3 and 5
are CLOSED.
4-9 CO2 hose/reel units
a.
Trigger either of these two units by pulling out safety pin-ring (Figures 4-4 and 4-10) from control head and
activating lever on top of master cylinder. Pull activating lever to open position.
WARNING
Do not pull hose from reel by pulling on handle. Handle is used to release CO2.
b.
Pull hairpin retainer pin near top of black nozzle horn to release nozzle horn from stored position. Hold nozzle
horn and hose and pull out amount of hose necessary to reach fire. Hose is held in tension and does not free-
wheel off reel.
WARNINGS
If any breeze or wind is present in area of fire, persons fighting the fire MUST
· stay upwind (breeze on the back) from fire to stay out of fumes and oxygen-
starved area created by the CO2.
Operator must hold nozzle horn by handle or wear thick gloves to protect
· hands. Flesh must not touch nozzle horn while it is discharging. If hand is
wrapped around nozzle horn when it discharges CO2, the hand will freeze to horn
in just a few seconds. If this happens, pour water on hand to free it from nozzle.
Do not try to pull hand away; this will tear the skin and be very painful.
c.
Get as close as possible to fire. Aim nozzle at fire and release CO2 by pulling handle on base of nozzle horn.
d.
Use plenty of CO2 as soon as possible on fire. Continue to blanket burning area until fire is completely smothered
and out.
4-16
