FS15-60-120 Rev0204
24
Operational Check
It is very expensive to use foam to test the system. As an alternative a die (e.g. red)
can be used to color water in the foam tank. The color of the discharge allows the
change in foam concentration to be observed. A lighter color indicates less foam in
proportion to water while a darker color indicates more foam in proportion to water.
(Refer to Figure 9 for control module sample displays.)
1. Ensure that the pump intake and discharge pressures will be within minimum
requirements. (Refer to Table 1.)
2. Ensure that the bypass valve and flush valve are closed. Ensure there is enough
foam (colored water) in the foam tank to run this check.
3. Open the foam isolating valve (and the eductor water valve if installed).
4. Pump water. The lower display shows the discharge flow.
5. Press FOAM ON button. The system will be in automatic mode. The upper
display shows the last used proportion percent selected.
6. Press FOAM % increase and decrease buttons to change the foam proportion.
(Foam concentrate (or colored water) will start to be injected if water is flowing
through the pump.) Set the desired foam proportion percent. When the FOAM
% button is pressed the upper display will show the selected percent for 3
seconds then show foam flow in GPM.
Note:
This system can be operated in the manual mode. The metering valve
is opened or closed manually using the Manual OVERRIDE buttons to
change the foam proportioning percent. The operator has to monitor the
discharge flow and make corrections for foam proportioning.
7. Press and hold Manual OVERRIDE OPEN or CLOSE button for 3 seconds.
The system will go into manual operation and the upper and lower displays
will flash. The operator is in control of the metering valve position. The valve
position is adjusted by pressing the OPEN or CLOSE push buttons. The
position of the valve determines the foam concentrate rate of flow.
8. Press FOAM ON button to revert to automatic mode.
9. Press and hold TOTAL button to display the total gallons of foam and water
discharged. The upper display (x 1) shows the amount of foam discharge and
the lower display ( x 100) shows the amount of water discharged.
10.Press OFF button to turn off the AutoFoam.
Note:
The foam system should be flushed after each use. (Refer to
Maintenance section.)
