Fire Extinguisher Maintenance.
Monobromotrifluoroethane liquid or gas (Halon 1301) can cause death or
serious injury if personnel fail 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
unit. Any discharge of contents will require refilling.
The PU-753/M Power Unit is equipped with a 2-3/4 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.