Class1 FoamLogix 2.1A & 1.7AHP REV D - Manual (Page 15)

FoamLogix, Model 2.1A and 1.7AHP Class “A”
Electronic Foam Proportioning Systems 15
SECTION 2 DESCRIPTION
The Hale FoamLogix 2.1A and 1.7AHP Foam
Proportioning Systems are completely engineered,
factory matched foam proportioning systems that
provides reliable, consistent foam concentrate
injection for Class “A” foam operations.
Hale FoamLogix Foam systems accurately deliver
from 0.1% to 10.0% (up to the capacity of the foam
pump) foam concentrate through a check valve/
injector fitting, directly into the water discharge
stream. It is then fed as foam solution into a
standard fog nozzle, an air aspirated nozzle, or
CAFS equipment, through the apparatus discharge
piping. A properly configured and installed foam
system with Hale recommended components
virtually eliminates contamination of the booster
tank, fire pump and relief valve with foam
concentrate.
ROTARY PLUNGER PUMP
The heart of the Hale FoamLogix 2.1A and 1.7AHP
systems are an electric motor driven rotary plunger
pump. The pump is constructed of anodized
aluminum and stainless steel and is compatible
with most Class “A” foam concentrates. The pump
is close coupled to the electric motor thereby
eliminating maintenance of an oil filled gearbox.
A relief valve mounted on the foam pump and
con structed of brass, protects the foam pump
and foam concentrate discharge hoses from over
pressurization and damage.
CONTROL UNIT
The control unit, mounted on the operator panel, is
the single control point for the FoamLogix system.
Pressing the ON button starts foam concentrate
injection. A super bright digital LED display shows
the:
❑
Water flow rate
❑
Total water flow
❑
Foam concentrate injection percentage
❑
Total foam concentrate used, depending on the
display mode selected.
A bar graph indicates the approximate system
capacity being used. Adjustment of the foam
concentrate injection rate is accomplished by
pressing the appropriate button.
The control unit display also warns the operator if
errors or abnormal operations occur in the system,
such as low foam level.
WATER FLOW SENSOR
Foam concentrate injection rate is controlled by
a computer chip in the control unit for accurate,
repeatable, reliable foam concentrate injection. A
water flow sensor constantly monitors water flow
through the discharge piping. The informa tion from
the flow sensor is provided to the control unit by
a shielded cable. When the FoamLogix system is
activated at the control unit a signal is sent through
the control cable to the distribution box to begin
foam concentrate injec tion. The distribution box then
provides power to the electric motor. As the motor
rotates the pump, foam concentrate flows through
the foam pump discharge to the one piece check
valve/ injector fitting into the water discharge stream.
Note: All Hale FoamLogix Foam systems
require a flow sensor for operation.
FEED BACK SENSOR
A feedback sensor in the foam pump discharge
measures foam concentrate flow. The water flow
rate and foam concentrate flow rate are con stantly
compared by the computer chip in the control unit.