Maintenance - FlowLine Switch Pro A 1 Series Owner's Manual

WIRING
Step Eight
VAC Power Input Wiring:
troller. Note: Polarity does not matter with the AC input terminal.
HOT
NRTL
GND
Relay Input Wiring:
type rated at 250 Volts AC, 10 Amps. The terminals Normally Open
(NO) and Normally Closed (NC) will be used in different applica-
tions. Remember that the "normal" state is when the relay coil is de-
energized and the Red relay LED is OFF (de-energized).
Relay
Terminals
A typical application for the Switch Pro™ with Compact Relay
Controller is to operate a pump or valve between the two set points
(automatic fill or empty). In this application, a pump or valve can be
wired to either the Normally Open (NO) or Normally Closed (NC)
side of the relay.
AC AC
P P AC AC
Power to
GND GND
Switch Pro
not shown.
NC NC
R R
C C
NO NO
Alarm
NO Wiring
Strobe Alert Output
With the Strobe Alert wired NO, the strobe will flash when the Red
LED is ON (Invert OFF). The strobe will flash when the Red LED is
OFF when wired NC or by turning the Invert ON. If the strobe is
wired NC and the Invert is ON, the strobe will flash when the Red
LED is ON (same as NO wiring and Invert OFF).
Power to
Switch Pro
not shown.
Strobe
Observe the labeling on the con-
HOT
AC
NRTL
AC
GND
GND
NC
C
NO
The relay is a single pole, double throw
AC
AC
GND
NC
C
NO
P P
Power to
Switch Pro
not shown.
R R
Alarm
NC Wiring
AC
AC
P
GND
NC
R
C
NO

MAINTENANCE

Step Nine
General:
maintenance except to clean off any deposits or scaling from the sen-
sor tip as necessary. It is the responsibility of the user to determine
AC the appropriate maintenance schedule, based on the specific charac-
teristics of the application liquids.
AC
GND
Cleaning Procedure:
NC
1. Power: Make Sure that all power to the sensor, controller and/or
C
power supply is completely disconnected.
NO
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 Switch-Pro™ if the threads are damaged.
3. Cleaning the Sensor: Use a soft bristle brush and mild deter-
gent, carefully wash the Switch-Pro™ flow switch. Do not use
harsh abrasives such as steel wool or sandpaper, which might
damage the surface sensor. Do not use incompatible solvents
which may damage the sensor's PP/Ryton or PVDF plastic body.
4. Sensor Installation: Follow the appropriate steps of installa-
tion as outlined in the installation section of this manual.
Testing the Flow Switch:
Used to verify if the sensor is indicating a no-flow or flow condition.
This test uses all four-wires (Red, Black, White and Green). With Red
to Positive and Black to Negative, the Contacts (White and Green) will
be Open in a Flow Condition and Closed in a No-Flow Condition.
Also, the Red LED in the switch will ne OFF for a Flow Condition and
ON for a No-Flow Condition.
AC AC
AC AC
GND GND
NC NC
Shield
C C
Ground
NO NO
The Switch-Pro™ flow switch requires no periodic
Red
Black
White
Green
+
24 VDC
Power Supply
-
-
Multimeter
(Continuity)
+