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TM 5 4210-220-12
1-19. FIREFIGHTING SYSTEM. - Continued
f. Water and Foam Control - Structural Mode.
(1) With the mode switch selected to structural firefighting mode (see fig. 1-40), air pressure is provided via
manifold #2 to the manual throttle regulator. Air pressure is also provided to the water TANK VALVE switch and the
foam control switches on the structural control panel.
(2) The water and foam control switches in the cab are isolated. The water tank valve as well as the foam
control valves can only be opened and closed from the structural control panel.
(3) When the pump is switched on (see para. 1-19d.), water flow and pressure is regulated by adjusting the
manual THROTTLE regulator. Refer to paragraph 1-13 for details of throttle operation.
Figure 1-40. Water and Foam Control - Structural Mode
Change 6 1-47
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