TEST OR INSPECTION
If air lines are under pressure when they are disconnected, they can whip around
and cause injury to personnel. Caution should be exercised when disconnecting
air line fittings.
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
Disconnect air line at bumper turret foam A multi-metering valve cylinder. While an
assistant pushes bumper turret control agent discharge button (WP 0004), check if air
pressure is present at bumper turret foam A multi-metering valve cylinder.
If there is pressure, replace foam system multi-metering valve (WP 0292).