TM 5-4310-277-14
b. Operation. Remove fire extinguisher from its
(1) Press lever to release pressure from used
location; break the seal, operate the control valve,
cylinder.
and direct the stream at the base of the flame.
(2) Loosen swivel valve coupling nut and
remove valve assembly from used cylinder.
c. Maintenance. For maintenance of the fire ex-
tinguisher, refer to TM 5-687 and TM 9-1799.
(3) Remove instruction band from used
cylinder.
(4) Place new cylinder through instruction
a. Description. The dry chemical type fire ex-
band.
tinguisher is suitable for use on all types of fire and is
(5) Replace safety pin in valve and seal pin
effective in areas where ambinet temperature is -
with sealing wire.
25 F. (-32oC.) and above. The fire extinguisher is
(6) Attach valve assembly and tighten swivel
a 21/2 pound (1.1 kg), stored pressure, lever operated
coupling nut on the new cylinder and place fire
extinguisher.
extinguisher in mounting bracket.
b. Operation. Remove the fire extinguisher from
(7) Adjust instruction bank on cylinder to
its location, lift the handle, press lever, and direct the
show maintenance and operating instructions.
powder at the base of the flame using a side-to-side
d. Maintenance. Weigh fire extinguisher every 3
sweeping motion.
months and replace cylinder if gross weight has
c. Maintenance. Weigh the fire extinguisher every
decreased 4 ounces (112 grams) or more. Lubricate
six months and replace the extinguisher if weight is
cylinder neck threads with one drop of OE-30 oil
less than 41/2 pounds (2 kg) or if pressure is below
before reassembly.
125 pounds. Refer to SB5-111. The dry chemical fire
extinguisher will be serviced at installation level
a. Description. The carbon dioxide type fire ex-
through Repair and Utilities facilities, with the
tinguisher is suitable for electrical and flammable
filling agent supplied by local procurement through
liquid fires. The carbon dioxide types are of the 4
Troop Supply channels.
pound (1.8 kg), 71/2 pound (3.4 kg), and 10 pound
(4.5 kg) sizes. The 4 pound (1.8 kg) extinguisher is
portable; the other two are the fixed type.
