Hale CAFSPro - Manual (Page 35)

Operation ❑
35
CAFSPro User Operation Manual
p/n: 029-0020-75-0
There are three critical items in the water flow path from the intake side of
the pump and finally out of a hose line, i.e., the fire pump, the foam concen-
trate injection point, and finally, the air injection point.
The Hale CAFSPro system uses integrated check valves, constructed of
stainless steel, between all three points. The check valves ensure that at no
point can air or foam concentrate flow back into the fire pump. This is very
important as foam contamination of the water tank or portable municipal
water supplies is a serious hazard to avoid.
When the CAFSPro system is ON, any discharge that is piped between the:
❑ Fire pump and the foam injection point will always be able to flow plain
water.
❑ Foam injection point and the air injection point will always be able to flow
foam solution.
❑ Air injection point and the discharge valves will always be able to flow
compressed air foam.
When the CAFSPro air compressor is shut OFF, the CAFS and foam capa-
ble discharges flow foam solution. When the FoamLogix proportioner is
shut OFF, all the foam capable discharges revert to water operation.
It is important to understand the limitations of the CAFSPro system depend-
ing upon the manifold installed. The foam solution and compressed air
foam manifold is designed to flow at a specific flow rate. Generally, a maxi-
mum of 750 or 1,000 GPM (2,839 or 3,785 LPM) of foam solution (liquid) is
specified.
4.5 CREATING FINISHED FOAMS
The Hale CAFSPro is able to provide a wide range of compressed air foam
consistencies and foam solution flow rates to meet most operational needs.
If your system is equipped with a dual tank foam reservoir and a dual tank
switch, your new foam pumper can handle most Class “A” and Class “B”
foam agents. Use the recommended foam chemical percentage (%) listed
for the foam concentrate.
Operation
When the pump is initially engaged, the foam injection and air injection sys-
tems are powered up, the tank-to-pump valve is opened and the air com-
pressor clutch is engaged.