At least ones in a weak check the nozzle outlet and vent holes on the threaded portion of the cap[ for clogging.Check the plunger can be raised to the fully exerted position and that is to be cleaned if necessary.Once in a three months ,dismantle the components ,check for any damage,clean & grease them as required,stir the solution in the container with clean and dry stick.
Annually operate 50 % of extinguisher and check it project to the distance of not less than 6 meter for a minimum period of 30 seconds. Clean the extinguisher thoroughly and examine their inside for rust & corrosion .Subject rusty & corroded extinguisher to pressure test , even if they are not due for it and their performance otherwise satisfactory. Carry out the pressure test every 2 years on which extinguisher by means of hydraulically test pressure is 17.5kg/cm2 and is applied for 2.5 minutes.
Annually operate 50 % of extinguisher and check it project to the distance of not less than 6 meter for a minimum period of 30 seconds. Clean the extinguisher thoroughly and examine their inside for rust & corrosion .Subject rusty & corroded extinguisher to pressure test , even if they are not due for it and their performance otherwise satisfactory. Carry out the pressure test every 2 years on which extinguisher by means of hydraulically test pressure is 17.5kg/cm2 and is applied for 2.5 minutes.
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