IV
-3
ROTARY GEAR PUMP
ELECTRONIC FOAM PROPORTIONING SYSTEM
Section
IV
: Operation
Figure 4-1. Control Unit Identification
BARGRAPH
(LIGHTS TO APPROXIMATE
CAPACITY WHEN FOAM PUMP IS
RUNNING)
ON PUSHBUTTON
(TURNS THE HALE FOAMMASTER
SYSTEM ON AND OFF. LIGHTS
WHEN THE SYSTEM IS ON)
DOWN ARROW AND UP ARROW
(ADJUST THE CONCENTRATE INJECTION RATE DURING OPERATION.
PUSHING BOTH AT THE SAME TIME WILL RESET TOTAL VALUES)
LEDs
(LIGHT TO INDICATE FUNCTION
SELECTED)
SELECT DISPLAY
(SELECTS CONTROL UNIT
FUNCTION AS INDICATED BY
LABEL AND LED AT LEFT)
OPERATING INSTRUCTIONS
SYSTEM OPERATION DESCRIPTION
Operation of Hale FoamMaster systems is
simple with all control provided by the push
buttons on the control unit face (see figure 4-
1).
Upon initial power up of the apparatus the
Hale FoamMaster system will go to the
standby mode upon completion of a self
diagnostic routine. There are four different
display functions on the control unit digital
display. While in standby mode with the
FLOW
LED lit the digital readout will show the
current water flow rate in the monitored
discharge pipe. Pressing the
SELECT DISPLAY
button will change the function indicated by
the LED that is lit under a particular label.
TOTAL WATER
and
TOTAL FOAM
values can be
reset any time they are displayed. When the
% FOAM
LED is lit, or in any other function
mode, the foam concentrate injection rate
can be set to the desired value, if different
from the default value, prior to or during
foam operations by pressing the
é
and
ê
buttons.
When the red
ON
button is pressed, the
button will illuminate indicating that the
system is ready. If water flow is present the
foam pump will start and inject foam
concentrate into the discharge stream.
The bargraph will light when foam is being
injected and indicate system capacity.
The Hale FoamMaster system constantly
monitors water and foam concentrate
flow values maintaining 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
ON
button is again pressed, the
button will extinguish, indicating that the
system is in Stand-By mode and the foam
pump will stop, but other system
monitoring functions will continue.
DIGITAL DISPLAY
(PROVIDES DIRECT READOUT OF
SELECTED FUNCTION VALUES AND
DISPLAYS WARNINGS)
