Fire Extinguisher Maintenance. The PU-751/M Power Unit is equipped with a 5 lb Halon fire extinguisher.
Maintenance is limited to weighing the fire extinguisher monthly to insure that it is sufficiently charged. Fully charged, the
fire extinguisher (with head and horn attached) weighs 5 lb. Send the unit to specialized activity for recharging if it weighs
4 lb 12 oz or less.
Monobromotrifluoroethane liquid or gas (Halon 1301) can cause death or serious Injury if
personnel fall to observe safety precautions. Inhalation of monobromotrifluoroethane gas at
concentrations of 5% to 6% for more than 4 or 5 minutes may result In serious cardiac or central
nervous system effects. Liquid Halon 1301 (including the spray In the immediate vicinity of the
discharge) may freeze the skin on contact. In the event of frostbite, warm the affected area
quickly to body temperature. Immerse hands in warm water or place hands in armpits. Get
medical attention promptly.
Do not attempt to verify readiness of fire extinguisher by partially discharging unit. Any discharge
of contents will require refilling.
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