SECTION IIIMAINTENANCE3-1.PERIODIC INSPECTION.3-2.The fire extinguishing system requires ordinary care to ensure efficient operation at all times. However, periodicinspections should be made to determine the exact condition of the system equipment.3-3.MONTHLY.3-4.Make a general inspection survey of the system components and their immediate vicinity to ensure that accidentaldamage to equipment has not occurred and that no obstructions to the operation of the system or system distribution ofagent are present. Ensure that egress to the extinguisher assembly and all control pull boxes are unobstructed. Checkextinguisher assembly pressure gages for proper operating pressure. 360 PSI at 70F, 395 PSI at 80F, 430 PSI at 90F,470 PSI at 100F.3-5.SEMI-ANNUALLY.3-6.Check all agent supply cylinder pressure gages for proper operating pressure. Check extinguisher assembly forproper charged weight. If charge weight or pressure has decreased, a pressure leak is apparent. Forward chargedextinguisher assembly with control head removed, to a service facility when weight loss is in excess of 5% or a loss inpressure ( adjusted for temperature) is more than 10%.3-7.SERVICE.3-8.Fire extinguishing system service consists of the removal of an expended cylinder assembly from the fireextinguishing system, recharge of the cylinder assembly by a qualified person and installation of the recharged cylinderassembly into the system.3-9.MAINTENANCE.3-10.System maintenance is performed as a result of periodic inspection, service requirement or system operation.
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