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TM 10-4210-235-13
Section I. DESCRIPTION AND USE OF OPERATOR'S CONTROLS AND INDICATORS
2-1. FIRE SUPPRESSION EQUIPMENT SET.
The controls and indicators needed to operate the fire suppression equipment set are located for easy access at the rear
(hose reel end) of the unit.
2-2. AFFF SYSTEM.
See figure 2-1 for location of AFFF system controls and indicators.
1.
CYLINDER DISCHARGE VALVE
When opened, pressurizes the AFFF system.
2.
CYLINDER PRESSURE GAGE
Gives a continual reading of cylinder pressure. Normal reading, fully charged, 2400 psi (16560 kPa) at
70° F (21° C). Minimum pressure required for operation, 1750 psi (12075 kPa) at 700F (21° C).
3.
BALL VALVE
Controls the pressurization of the AFFF tank.
4.
BALL VALVE
Controls the tank bypass line to permit purging of the discharge lines and dispensing hose with nitrogen directly
from the nitrogen cylinder.
5.
AFFF VALVE ROD
Extends the AFFF shut-off valve control to the rear of the unit for easy access. Used to control outlet of AFFF
tank.
6.
FIRE HOSE NOZZLE
When the nozzle lever is squeezed, the shut-off valve opens to discharge the AFFF onto the fire.
2-2
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