HALE MiniCAFS 2.1A, Описание, установка и руководство по эксплуатации

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Page 95
SmartFOAM
Pump/Motor
The discharge of the foam pump directs foam to the rotary
lobe flow meter. The rotors are a composite material con-
taining small stainless steel targets. As the foam is being
pumped these targets are detected by the inductive sensor
which sends pulses to the distribution box. An LED indicator
on the inductive sensor flashes as a target passes the tip of
the sensor. The speed of the foam being pumped deter-
mines how quickly the rotors are turning and how quickly the
inductive sensor LED flashes (which could be so fast that the
indicator light appears to be constant).
Figure 84: Inductive Sensor Indicator LED
SmartFOAM Controller Bar Graph
The bar graph on the SmartFOAM controller display indi-
cates the system capacity and is a good troubleshooting
tool.
Figure 85: Bar Graph and Warning Messages
If the SmartFOAM controller display does not see foam feed-
back data indicating that foam is being pumped, the bar
graph will increase to 100% (full scale) because the control-
ler is commanding the pump to turn fast in an attempt to
prime it and achieve the proper foam concentrate flow.
If the display does not receive data that foam concentrate is
flowing, it displays “ramping to re-gain foam prime” caution
message. This message also displays the number of sec-
onds until the pump will be turned OFF if prime is not estab-
lished. If the timer times out then the “foam pump shut
down” operation halted message will appear. Pressing ON
button starts the cycle again.
The Total Foam flow display is useful in this scenario to de-
termine if the foam sensor is detecting any foam flow.
PROBLEM ISOLATION
SmartFOAM replacement parts are “plug and play” type de-
vices that do not require specialized equipment to service.
Normal water flow and foam calibration is usually necessary
after a major component service.
The first step in troubleshooting is to determine which sub-
system caused the system failure. To make this determina-
tion operate the apparatus and Hale SmartFOAM system in
accordance with standard operating procedures and isolate
where the problem occurs.
1. Setup the apparatus for normal operation.
2. Power-up the apparatus and energize the pump op-
erator panel. Take notice of the Hale SmartFOAM
control unit. If the display is NOT illuminated check
for power and ground voltage on the SmartFOAM
controller “B” connector.
3. If the Hale SmartFOAM controller is illuminated, en-
gage the apparatus water pump and establish dis-
charge. If water flow CANNOT be established, trou-
bleshoot the water pump system.
4. If there is no indication of water flow on the control
unit display troubleshoot the water flow sensor.
5. If water flow is established, turn the Hale Smart-
FOAM system ON to flow foam.
6. Observe foam pump discharge. If foam is NOT flow-
ing troubleshoot the foam pump.
7. If foam is flowing, check the status of the total foam
flow display. If the foam total is NOT incrementing
troubleshoot the foam flow sensor.
8. If the foam flow is registering on the total foam dis-
play but the accuracy is not correct (too little foam /
too much foam) check accuracy of system using cali-
bration procedures in the OPERATION section of
this manual making adjustments as required.