Quenchmaster CP500 RFS Rev4, 16/2/2010
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6 of 16
QUENCHMASTER FOAM SYSTEM OPERATION
PROPORTIONER OPERATING PROCEDURE
To supply foam
(when drawing water from water tank or static supply)
Open the cap on the foam drum ¾ to 1 full turn.
Start the pump and set the pressure at greater than 600kPa. (700 kPa. is optimum)
Do not
exceed 1000 kPa.
Open nozzle/branch to provide water flow through pump and proportioner.
Check class of foam to be used is selected.
Turn Foam On/Off valve On. (if fitted)
Select percentage of foam required to suit type/class of fire.
To shut-down foam
With water discharging from a nozzle/branch, set Foam Metering Valve percentage selector
to Off.
Allow a 15- 20 secs. of water to pass through the pump then close the Foam On/Off valve (if
fitted).
Close the cap on the foam drum (if no more foam required).
To flush foam system
Set foam percentage selector to zero.
Start the pump and set pressure at greater than 400 kPa.
Turn foam On/Off valve to On.
Discharge water through the hoses used until discharged water is free of foam.
Turn foam On/Off valve Off.
Shut down the pump.
If foam entered the tank during any fire fighting operation, flush the water tank until free of
foam.
NOTES & SUGGESTIONS
BFFF is Class ‘A’ foam. AFFF and ATC are Class ‘B’ foams.
Never exceed 1000 kPa. Pump pressure whilst operating Quenchmaster unit
Clean ‘Y’ strainer regularly. This means after each fire (or shift at a major fire) when water is
drawn from a dirty creek or dam and at least monthly when town water is used. A
blocked ‘Y’ strainer can cause the pump to overheat or the foam system to fail to
operate. To clean, undo the hexagon cap and carefully remove the mesh screen.
Flush with clean water, Replace carefully. Do not over-tighten the cap when refitting.
