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Figure 2-9. Performance curve.
Section V. OPERATION OF MATERIAL USED IN CONJUNCTION
WITH CENTRIFUGAL PUMP ASSEMBLY
powder at base of flame, using a side-to-side sweeping
2-20. Fire Extinguisher (Dry Chemical Type)
motion.
a.
Description.
The dry chemical type fire
c. Maintenance. Weigh the fire extinguisher every
extinguisher (fig. 2-3) is suitable for use on all types of
6 months and replace if weight is less than 4 1/2
fire,  and  is  effective  in  areas  where  ambient
pounds, or if pressure is below 125 pounds. The dry
temperature is -25 F.  And above.  If winterized
chemical  fire  extinguishers  will  be  serviced  at
(pressurized with nitrogen), the fire extinguisher may be
installation level through Repair and Utilities facilities
used in temperatures below -25 F.
The fire
with the filling agent supplied by local procurement
extinguisher is a 2 1/2 pound, stored-pressure, lever
through Troop Supply Channels. Refer to TB 5-4200-
operated extinguisher.
200-10.
b. Operation. Remove the fire extinguisher from its
location, lift the handle, press lever, and direct the
2-14

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