Step Eight
Step Nine
FLOW SWITCH CALIBRATION
TROUBLESHOOTING
Controller Logic:
For all controllers, please use the following
guide to understand the operation of the FLOWLINE LC30 con-
troller.
1. Power LED:
Make sure the Green power LED is On when
power is supplied to the controller.
2. Input LED:
For NC switch wiring, the input LED on the con-
trollers will be Amber when the switch reads no-flow and Off
when the switch reads flow.
3. Invert Operation:
When the input LED turn Off and On, the
relay LED will also switch. With invert Off, the relay LED will be
On when the input LED is On and Off when the input LED is Off.
With invert On, the relay LED will be Off when the input LED is
On and On when the input LED is Off.
4. Relay Operation:
The relay may be wired either NO or NC.
The normal state of the relay is when its LED is Off. With the
LED On, the relay is in the energized mode and all terminal con-
nections are reversed.
Cleaning Procedure:
1. Power:
Make Sure that all power to the sensor, controller and/or
power supply is completely disconnected.
2. Sensor Removal:
Make sure that the flow is off and the pres-
sure is down prior to removing the Switch-Pro™. Carefully, remove
the sensor from the installation. Replace the sensor with a 3/4” NPT
plug to insure that liquid does not leak out during this procedure. Do
not re-install the flow switch if the threads are damaged.
3. Cleaning the Sensor/Controller:
Use a soft bristle brush and
mild detergent, carefully wash the flow switch and controller. Do
not use harsh abrasives such as steel wool or sandpaper, which
might damage the surface sensor. Do not use incompatible sol-
vents which may damage the sensor’s PP/Ryton or PVDF plastic
body or the PP and Polycarbonate body of the controller..
4. Installation:
Follow the appropriate steps of installation as out-
lined in the installation section of this manual.
Set Points:
If the preset factory calibration is not adequate for
your application, follow the calibration steps listed below. Note: the
switch's internal LED will be on when the switch detects no-flow and
will off when the switch detects flow.
1. Install the fitting and flow switch as described in the Installation
section of this manual. Turn the flow switch and controller power
on and adjust the flow rate to the application setting. If the medi-
um to be sensed is likely to be subject to high temperature varia-
tions, the flow switch should be set at the highest normal temper-
ature likely to be encountered.
2. Locate the potentiometer knob at the top
of the flow switch. The red LED is visible
through the potentiometer. (If the LED is
on, slowly adjust the potentiometer coun-
terclockwise, with a small flat head
screwdriver until the LED turns off.) The
adjustment is a single turn 270° poten-
tiometer. The initial response time of the
flow switch after adjustment is 1 to 10
seconds. Adjust the potentiometer in slow
increments and wait for the response.
If the LED is off, slowly adjust the poten-
tiometer clockwise until the light turns on.
Then turn the potentiometer counterclockwise to bring the LED
off at a reliable setting. Remember, adjust the potentiometer in
slow increments and wait for the response.
3. Verify that the new calibration is correct by lowering the system
flow rate below the set point and check to see that the red LED
turns on. Then increase the flow rate above the set point and ver-
ify that the red LED turns off accordingly.
Liquid Switch
Gas Switch
FT10-___5 Series
GT10-___5 Series
1 fps
90 fps
10 fps
.04 fps
3 fps
0.2 fps
Adjustment Potentiometer
Accessing the Adjustment Potentiometer:
Remove the
two screws from the top of the printed circuit board (PCB) and gently
slide the PCB from the housing. Use caution when removing the PCB.
You will now be able to see the potentiometer through the housing. Make
any necessary adjustment. Note: Electrical wiring of any liquid level
control system should be performed in accordance with all applicable
national, state, and local codes. When completed, gently return PCB
into housing and replace the two screws.
