Hale FoamLogix 6.5 - Manual (Page 143)

Troubles hooting
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143 FoamLogix 3.3 / 5.0 / 6.5 Installer / Operations Manual
p/n: 029-0021-68-0
Note: The FoamLogix system has a SIMULATYED FLOW function. (See Sec-
tion 5.9, “Simulated Flow Mode Operation,” on page 131 for more information.)
This allows troubleshooting without flowing water.
Distribution Box
The Distribution Box, part of the pump/motor assembly, sends data to the
control unit for LOW tank warnings, TANK A or B selection status, as well as
foam concentrate flow feedback.
Selector valves are connected to the main cable harness and provide the
appropriate data to the control unit, i.e., is the unit in TANK select or FLUSH
mode.
Note: If no accessory is used, a connector plug is installed to lock the system in
the TANK A mode. For cable harness overviews, see Section 9 “Plate Drawings,”
beginning on page ? Removing this plug or disconnecting the MST accessory
cable places the system in the FLUSH mode.
Pump / Motor
The discharge of the foam pump directs foam to the rotary lobe flow meter.
The rotors are a composite material containing small stainless steel targets.
As the foam is being pumped, a target lines up with the sensor in the pump
head. The sensor “sees” the target and sends this signal to the control unit,
through the distribution box.
An indicator lamp on the sensor FLASHES as the target passes the sensor.
Depending on how much foam is being pump determines the flashing
speed, which could be so fast that the indicator light actually appears to be
constant.
Bar Graph
The bar graph, on the control display unit, indicates the system capacity by
illuminating LEDs form right-to-left, and is a good troubleshooting tool.
If the controller does not see foam feedback data, indicating foam is being
pumped, the all bar graph LEDs FLASH. The control unit then increases
pump speed attempting to prime the pump and achieve the proper foam
concentrate flow.