Operation Under Usual Conditions (Cont)
2-132. DRAINING AND FLUSHING FOAM TANKS.
Foam drained from foam tanks will need to be drained
into properly marked and sealed containers.
Foam tank B shown.
a. Gather suitable containers.
b. Attach drain hose (1) to FOAM TANK DRAIN valve (2).
c. Open expansion dome hatch (3).
d. Put FOAM TANK DRAIN valve handle (4) in open position and
completely drain foam into containers.
e. Put FOAM TANK DRAIN valve handle (4) in closed position.
Properly label the sealed containers when foam is completely drained
from foam tank.
g. Remove fill tower screen from foam tank.
Defoaming agent can be used in assisting to clean foam tanks.
Defoaming agent and water must be added into foam
tank that is being flushed.
h. Add defoaming agent into foam tank.
i. Fill foam tank with warm water.