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 TM 55-1925-273-10-1
0067 00
FIRE FIGHTING/AFFF SYSTEM
Firefighting
1.
Align the firefighting system to allow the diesel engine driven fire fighting pump to take suction from the
forward sea chest and discharge up to the fire monitors by opening valves AE-28 and FM-1. Individual supply
valves to fire monitors, FM-60, FM-61 and FM-62, may be opened as required.
2.
Follow steps 1 -14 of pump drive engine operating instructions.
3.
Open CA-73 and GS-111.
4.
Clutch in fire fighting pump at idle and observe fire fighting pump discharge pressure gauge. Engine RPM
shall be set at 2200 when discharging from two monitors.
5.
Close CA-73 and GS-111 when pressure rises.
6.
To secure system, return engine to idle, declutch fire fighting pump and follow steps 15-16 of pump drive
engine operating instructions.
AFFF
1.
Ensure AFFF tank is at the proper operating level.
2.
Line up system to allow the AFFF pump to take suction from the AFFF storage tank and discharge to the in-line
foam proportioner by opening valve FM-84.
3.
Ensure power is available to the AFFF pump motor controller.
4.
Follow steps 1 - 4 of fire fighting operating instructions.
5.
Start AFFF pump by depressing start button on AFFF pump motor controller.
6.
Observe system duplex pressure gauge at the foam proportioner. AFFF concentrate supply pressure should be
approximately 5 PSI higher than the fire fighting supply pressure.
7.
To secure system, depress stop button on the AFFF pump motor controller and allow fire fighting pump to
continue discharging out of the monitors to flush system of remaining AFFF concentrate, close FM-84.
8.
Upon completion of flushing system, approximately 2-3 minutes, declutch fire fighting pump and follow steps
15 -16 of pump drive engine operating instructions.
Placard 12. Firefighting/AFFF
0067 00-17
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