4
2. Discharge valve assembly
- consists of the operating lever, carrying
handle, valve stem, pressure gauge and discharge outlet that
permits the actuation and discharge of the dry chemical extinguishing
agent.
3. Siphon tube assembly -
houses the spring assembly and provides
the means for the extinguishing agent to be drawn up from the
bottom of the cylinder to the discharge valve.
4. Ring pin and tamper seals
- provide a means of visual assurance
that the extinguisher has not been activated, charged or subjected to
tampering.
5. Discharge hose assembly
-provides a flexible means of agent
delivery from the discharge valve to the nozzle.
6. Nozzle assembly
- provides the agent discharge stream shaping
characteristics necessary for optimum fire fighting performance.
Operation Instructions
1. Remove the extinguisher from its hanger or bracket.
2. Pull and remove the ring pin, breaking the visual tamper seal.
3. Using the extinguisher carrying handle, transport the unit to a safe
position upwind of the fire.
4. Remove the hose nozzle from the retention clip (if equipped) and,
while keeping the extinguisher in a vertical position, aim the nozzle
at the base of the fire.
5. Approach fire from upwind, to within approximately 8 to 12 feet of
the front edge of the fire.
WARNING:
Failure to start back at a sufficient distance from the front edge
of the fire or to use an adequate sweeping tempo of the agent
discharge stream could cause splashing and or scattering of the
burning material.
6. Starting back from this distance, squeeze the operating lever fully to
initiate the agent discharge.
7
.
Apply the dry chemical agent discharge in a side to side sweeping
manner, being careful not to splash or scatter the fuel. Operators may
advance closer as control of the fire is gained however, they should
avoid stepping into the fuel or fire area.
8. After fire extinguishment, stand by and be prepared to address any
re-flash.
9. Once the fire is out and has cooled, ensure the fuel is properly
removed and disposed of in accordance with any local handling
requirements.
