Assembly and Operation
© 2012 Little River Research & Design; updated July 2018
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A square, green indicator light in the circuit board displays when the power is on. Change flow rate
using the knob on the controller. Pressing the knob resets the flow to zero. See Figure 21
.
Troubleshooting:
If the controller does not produce flow, and there are no lights on the circuit board,
check the power supply to ensure that the cord is fully connected and that there is a light on the power
brick.
If the power light is on, but there is no flow, check to see that the flow indicator LED is lit on the circuit
board (round green light). If it is lit, check the connection between the controller and the pump. Also
check for any obstructions or clogged filters. Expel all air from pump and hose. If the flow indicator LED
is not lit, adjust the knob clockwise until the LED is lit and there is flow.
Figure 21. Turn on the pump and
control flow with the knob.
Note
:
The knob does not turn the pump off completely; it merely stops flow. The pump is on as long as
the power is connected. To completely turn off the pump, the power must be disconnected.
Note
:
If the pump is reluctant to prime when started, reorient or shake it a bit (while underwater) to
remove air trapped in its intake. If necessary, clean any debris from the filter by unscrewing it from the
pump and flushing it with water.
