24
Installation and Operation Manual
Turn the “CAL/INJECT” valve pointer to the Cal/Flush
position. Place a graduated measure container beneath
the outlet from the CAL/INJECT valve that can contain
the expected volume of foam concentrate (minimum 5
gallons [19 liters]). If an accurate calibrated container
is not available, a scale can be used to weigh the
foam concentrate pumped. The total volume of foam
concentrate can then be calculated from this weight.
Start the FoamPro foam pump by pressing the red
“FOAM” button. The foam pump will operate and pump
foam concentrate into the container. Stop the foam
pump and measure precisely the amount of foam
concentrate collected.
Adjust the reading on the Digital Display Control Module
to the volume pumped by pressing the or button.
Repeat the procedure two to three times to verify
calibration.
If using a dual-tank system, switch to the other tank by
using the electric selector switch or the manual valve.
Repeat the calibrating procedure using the method
previously described.
Turn the CAL/INJECT valve back to “INJECT” position.
Exit Calibration and Setup mode as previously
described. REPLACE THE COVER SCREW. The
system is now calibrated to the actual flow from the
foam pump.
These Setup and Calibration procedures complete the
adjustment of the system. The FoamPro system is now
ready to be placed in service.
If this system is installed and calibrated by an apparatus
manufacturer or dealer, the end user may wish to adjust
the default Foam Concentrate Injection Rate and/or
Simulated Flow to their special needs. These changes
can be made without altering the calibration by using
the procedures for those functions only.
PRESSURE RELIEF VALVE ADJUSTMENT
The pressure relief valve is factory tested and preset
at 400 psi [28 BAR] (600 psi [41 BAR] for model
2000HP). During normal installation and operation, the
relief valve will not require adjustment. The following
procedures are provided if adjustment is necessary in
field installation. DO NOT set the relief valve above 400
psi [28 BAR].
Perform this adjustment after the foam pump has been
primed.
1. Determine the maximum pressure that will be
needed to discharge foam solution. (For example:
The maximum foam injection pressure should
be approximately 50 psi [3.5 BAR] higher than
the maximum operating pressure as set forth by
department policy.)
2. Gather the items required for reading concentrate
injection pressure: a 0-500 psi [0 to 34.5 BAR] test
quality gauge, 500 psi [34.5 BAR] hoses and fittings
to connect to the injector line from the foam pump.
3. Disconnect the injector from the foam line and
connect the pressure gauge to it.
4. Screw the Pressure Adjustment Nut on top of the
valve all of the way down until it stops.
5. Unscrew the Pressure Adjustment Nut
counterclockwise 10 full turns. This will place it in a
position to relieve at low pressure.
CAUTION: DO NOT run the FoamPro system
more than one minute deadheaded against the
pressure gauge because the foam pump will
overheat.
6. Operate the foam pump as described in the Foam
Pump Priming Check Section.
7. While the foam pump is running, slowly screw the
Pressure Adjustment Nut down clockwise until the
desired pressure is reached. Apply tamper proof-
type sealant to pressure relief valve adjustment nut
so that it does not move accidentally.
8. Stop the foam pump.
WARNING: Slowly loosen the foam pressure
line fittings and allow the pressure to escape.
Protect your face and eyes from any potential
spray which may occur.
9. Reconnect the foam line to the injector fitting. The
pressure relief valve is now set.
Note: FoamPro 12V 2000 Series systems require
13.8 VDC (standard automotive voltage) to reach full
capacity. 24V systems require 27 VDC.
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