TM 5-4310-247-15
d. Clean brass and copper surfaces, and oil
b. Protect the unit from dust and sand as
lightly.
much as possible. Keep the unit clean and free
from foreign matter.
c. Cover the unit when not in use.
Keep the air cleaners clean and unobstructed.
d. If possible, wet down the area surrounding
the operating site to keep down dust and blow-
at altitudes up to 5,000 ft. A slight loss of efficiency,
ing sand.
proportionate to altitude, is a normal condition.
cleaners frequently.
(dry chemical type)
a. Description. The dry, chemical type fire
tions
extinguisher is suitable for use on all types of
a. Lubricate the unit in accordance with the
fire and is effective in areas where ambient
current lubrication order.
temperature is -25F. and above. If winter-
b. Frequently wipe dry all exposed areas.
ized (pressurized with nitrogen), the fire ex-
c. Keep the fuel tank full, to prevent conden-
tinguisher may be used in temperatures below
sation.
-25F. The fire extinguisher is a 2 pound,
d. Keep electrical components clean and dry.
stored pressure, lever-operated extinguisher.
e. Coat all exposed machine surfaces with a
light film of oil.
b. Operation. Remove the fire extinguisher
from its location, lift the handle, press lever,
f. Keep the servicing hoses clean and dry.
Inspect frequently for cracks and deterioration.
and direct the powder at the base of the flame,
using a side-to-side sweeping motion.
g. Drain the air receiver frequently, to re-
move moisture.
c. Maintenance. Weigh the extinguisher
h. Cover the unit when not in operation.
every 6 months and replace the extinguisher
if weight is less than 4 pounds, or if pressure
is below 125 pounds. Refer to SB 5-111. The
a. Wash unit frequently with clean, fresh
dry chemical fire extinguishers will be serviced
water. Be careful not to contaminate fuel sys-
at installation level through repair and utilities
tem.
facilities, with the filling agent supplied by local
b. Coat exposed metal surfaces with rust-
procurement through troop supply channels.
proofing material. Remove any rust immedi-
ately and apply paint and/or oil as applicable.
c. Watch closely for evidence of fungus
growth on electrical components, and remove
promptly.
