Hale FoamLogix 6.5 - Manual (Page 20)

❑ Introduction
20 FoamLogix 3.3 / 5.0 / 6.5 Installer / Operations Manual
p/n: 029-0021-68-0
The control unit display also warns the operator if errors or abnormal opera-
tions occur in the system, such as low foam level.
2.3 WATER FLOW SENSOR
The 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 pip-
ing. The information 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 injection. 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 fit-
ting into the water discharge stream.
Note: All Hale FoamLogix Foam systems require a flow sensor for operation.
2.4 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 constantly
compared by the computer chip in the control unit.
The motor speed is constantly adjusted to maintain the operator selected
foam concentrate injection rate. Since the system is flow based, injection
rate remains constant regardless of changes in system pressure or the
number of discharges that are open (within the limits of the system).
Injection
Rate
(Percent
%)
Maximum Foam Solution Flows
Model 3.3 Model 5.0 Model 6.5
GPM LPM GPM LPM GPM LPM
0.1 3,300 12,492 5,000 18,927
Not
Applicable
0.2 Not 6,245 2,500 9,464
0.3 1,100 4,164 1,667 6,310
0.5 660 2,498 1,000 3,785 1,300 4,921
1.0 330 1,249 500 1,893 650 2,461
3.0 110 416 167 632 216 818
6.0 55 208 83 314 108 409
Table 2-1: Maximum Foam Solution Flows