TEST OR INSPECTION
Check red and blue air lines from shutoff control valve manifold (WP 0567) to foam
system B shutoff valve for leaks, kinks, or damage.
If air lines leak, are kinked, and/or damaged, replace air lines from shutoff
control valve manifold to foam system B shutoff valve (WP 0567).
Air lines may be under pressure when control valve is operated. If under pressure
and air lines are disconnected, air lines may whip around and cause injury to
personnel. Caution should be exercised when operating control valve with air lines
Air pressure is checked by disconnecting air lines at foam system B shutoff valve and
observing air pressure escaping from air line, when foam system B shutoff control valve
manifold is activated. Air will escape from blue air line when FOAM TANK switch is
positioned to B position, and escape from red air line when the FOAM SYSTEM switch is
positioned to OFF position.
Disconnect red air line from foam system B shutoff valve (WP 0567). Put pump
operator's panel FOAM TANK switch to "A" position (WP 0004). Disconnect blue air
line from foam system B shutoff valve (WP 0567). While an assistant puts FOAM TANK
switch to "B" position (WP 0004), check for air pressure at foam system B shutoff valve.
If air pressure is present, replace foam system B shutoff valve (WP 0285).