36
Installation and Operation Manual
12
Operation Instructions
Figure 12-1 Digital Display Control Module Operation
Normal System Operation
Once the system has been set up and calibrated,
operation is very simple and is controlled by the buttons
on the Digital Display Control Module (See Figure 12-1).
For setup and calibration instructions, see Section 11.
When the
FOAM
button is pressed, the
ON
status lamp
will illuminate, indicating that the system is ready. The
ON
status lamp will
flash
when foam is being injected.
The FoamPro system will monitor the water flows and
control foam injection at the specified concentrate
injection rate. The system responds to variations in
water flow by increasing or decreasing the speed of the
foam pump. When the
FOAM
button is again pressed,
the
ON
status lamp will extinguish, indicating that the
system is in Standby mode and the foam pump will stop,
but other system monitoring functions will continue.
Even when there’s no foam concentrate being injected,
the water flowmeter will display the current flow rate of
the water.
If water flow requirements exceed the capacity of the
pump to deliver foam concentrate, the pump will run at
maximum rate and
HI.FLO
will flash on the digital
display so that the operator realizes that the system
capacity is being exceeded and is running
lean
on foam
concentrate percentage.
