TEST OR INSPECTION
Do not mix different types or brands of foam agent in foam cells or piping. Mixing
of different foam agents (either type or manufacturer) may cause deterioration of
foam agent, improper proportioning and poor performance in a fire situation.
Mixing of Class A and Class B foam agents may result in a chemical reaction which
can create globules, which can clog orifices and cause system failure.
Failure to flush system after each foam use could result in equipment damage.
Do not open foam agent supply tanks while performing flush procedures.
Start water pump engine (WP 0022). Put pump operator's panel FOAM FLUSH switch
FOAM FLUSH switch to off position (WP 0004). Put cab FOAM SYSTEM switch to on
turret POWER switch to | (on) position (WP 0004). Push bumper turret control foam
selected. Check if foam A and Foam B is delivered from bumper turret.
If foam is delivered from bumper turret, fault corrected.
If foam is not delivered from bumper turret, replace foam system
multi-metering valve (WP 0292).