©Copyright Task Force Tips, Inc. 2004 - 2017 LIU-330 November 16, 2017 Rev08
6
3.1 PART IDENTIFICATION cont.
The eductor can be split into two parts by grasping the locking ring and retracting it fully to separate the metering head from the
eductor body. All the foam passageways can easily be inspected. The foam passageway into the eductor contains a free-fl oating
check disk with three fi ns. The check disk is pressure activated to keep water from coming out of the fi re hose and back into the
foam pail.
The metering head contains a red back fl ush button that can be depressed to open the check disk.
The metering head also has a large proportioning knob that can be rotated to align a ball valve to six diff erent detent positions:
Off , 1/4%, 1/2%, 1%, 3% & 6%. Each foam setting has a precision sized metering orifi ce in the valve ball. The eductor cannot be
operated between settings, as the metering orifi ces will not line up properly. The setting on the proportioning knob lines up with the
white indicator ball.
The eductor body is equipped with two 5/16-18, 3/4” deep mounting holes with set screw plugs. To mount the unit, remove the set
screws and attach to the desired location using bolts with enough length to provide at least 1/2” engagement with the unit.
3.2 GENERAL OPERATING INSTRUCTION
1) Choose the right foam concentrate (see section 4)
2) Lay the right hose (see section 5)
3) Connect the right nozzle (see section 6)
4) Charge the hose and open the nozzle fully to establish the water fl ow.
5) Adjust the pump pressure so the eductor inlet is set at its rated pressure of 200 PSI (13.8 bar), 160 PSI (11 bar) or 145 PSI (10 bar).
6) Put the wand in the bucket and rotate the percentage knob to the desired concentration.
3.3 CLEANING INSTRUCTIONS
After use take the wand out of the bucket and turn down the pump pressure below 75 PSI (5 bar). Shut off the nozzle. Restrain the
wand and expect a rapid discharge of water especially at 6% setting. Push the red fl ush button and run fresh water through the wand
and metering head on each setting until there is no visible foam in the fl ush water.
Retract the lock ring to remove the metering head. Turn off the water supply and remove the eductor from the hose so that any
remaining foam residue can be washed from the wand, metering head, and eductor.
CAUTION
Do not back fl ush above 75 psi (5 bar). Rapid back fl ush discharge from the wand could cause
injury. The back fl ush push button is pressure activated and must not be forced at pressures over
75 psi (5 bar).
4.0 FOAM SELECTION
Actual foam concentrations vary with changes in water fl ow, foam concentrate temperature and viscosity. The user must verify that
the concentrate’s performance is suitable for use in their application. In all cases, the manufacturer’s recommendations must be
followed.
CAUTION
Class A foam concentrates are generally less viscous than Class B foam concentrates. Using
1% Class B foam percentage setting to educt Class A foam, may cause the actual Class A foam
percentage to be more than 1%.
To Next Page
Loading...
Need help?
General