Hale CAFSPro - Manual (Page 45)

Operation ❑
45
CAFSPro User Operation Manual
p/n: 029-0020-75-0
Hale CAFSPro Display Unit
❑ Air Flow ....................................................... 70 SCFM (50 NCMH)
Wet and Dry Foam
When the CAFSPro system is energized the CAFSPro display unit is set for
WET 0.5% attack foam – a concentrate of approximately 0.5 SCFM (0.3
NCMH) air to 1.0 GPM (3.8 LPM) foam solution.
The foam type is adjustable from WET (0.5%) to DRY (11.0%) by pressing
the DRY button. Three stages of CAFS are available:
❑ WET 0.5% to 1.5%
❑ MEDIUM 1.75% to 3.0%
❑ DRY 11.0%
The DRY button must be held for several seconds for the changeover to
occur. The display shows CFLO and the audible alarm beep sounds when
the changeover is complete.
When shifting from MEDIUM to DRY the foam concentrate injection rate
automatically sets to 1.0%, to produce a drier finished compressed air foam.
When shifting back to MEDIUM, the foam injection rate switches back to
0.5%, or the initial value prior to switch.
4b CAFS
Operation Summary
4B.1 PROCEDURE
The following is a summary of the steps required for normal CAFS system
operation.
1. Connect (supply) suction hoses, layout discharge hoses.
2. Establish water supply.
3. Engage apparatus fire pump for operation. Prime the water pump.
4. Increase apparatus engine speed until desired discharge pressure is
attained (for example, 100 PSIG (7 BAR).