Quenchmaster CP500 RFS Rev4, 16/2/2010
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Foam On/Off Valve (Optional):-
Located on the discharge side of the pump, after the ‘Y’
strainer. ‘Foam ON’ position allows water to pass from the pump to the foam proportioner to
operate the proportioner. ‘Foam Off’ position (or ‘Tank Recirc.’) allows water to circulate
from the pump back to the water tank to keep the pump cool during standby periods when the
pump is in operation.
‘Y’ type Strainer (Optional):-
Located on the side of the pump near the discharge flange. Its
main function is to filter the water that passes from the pump to the proportioner to protect
the proportioner from becoming blocked and therefore unable to supply foam to the nozzle. It
also protects the pump bypass from similar blockage that can cause pump overheating. This
should be cleaned on a weekly basis.
Foam Concentrate:-
Normally stored in 20 litre plastic drums that are mounted near the
foam proportioning system. Foam is drawn out of the drum by a probe and hose that is fitted
to the cap of drum. This cap should be opened ¾ to 1 full turn when foam is required and
closed when travelling. (Where foam tanks are fitted to the tanker, the tank may have a
vented filled cap that does not need to be unscrewed.)
