TEST OR INSPECTION
Ensure system air pressure is at least 85 psi (586 kPa) during this procedure. System air
pressure is required to activate valves.
Do not engage water pump engine during this procedure, except when performing
complete system checks. Valve operations can be checked without water pump
Valve operations can be checked by observing valve shaft rotation. Valves are open when
tabs or yellow paint tabs are aligned with direction of fluid flow.
Open pump house panel A (WP 0539). Check if eductor valve is in open position.
If eductor valve is not in open position, troubleshoot Foam Not Delivered
From All Systems (Bumper Turret, Ground Sweeps, and Manual Metering
While an assistant puts pump operator's panel FOAM TANK switch to "B" position and
back to "A" position (WP 0004), check if foam A shutoff valve operates to closed and
If foam A shutoff valve does not operate to closed and open positions, go
to Step 18.