Operation Under Usual Conditions (Cont)
2-128. FOAM SYSTEM FLUSHING (CONT).
Perform steps (7) through (13) if discharges were used.
While flushing, open and close METERING VALVE
two times; continue flushing until water runs clear.
Open discharge valves and flush out all discharges that were used,
removing foam until water runs clear.
While flushing, open and close foam METERING VALVE (1) twice or
until water runs clear from discharge.
Flush portable equipment such as hoses, nozzles, monitors, etc.
Discharge caps should not be removed if water system is
pressurized. Discharge caps can act as projectiles if released
under pressure, causing injury or death to personnel.
Perform steps (10) through (13) to flush foam system
piping to discharges that were not used.
(10) Remove two caps from NO. 2 DRIVER SIDE DISCHARGE (5) and
NO. 4 PASSENGER SIDE DISCHARGE (6).