C
NO
NC
A
N
AUX
E
PUMP
MOTOR
A1
A2
A3
N
E
OPTIONAL
EXTERNAL
ALARM
415V 3 Phase Supply
Isolation switch,
used to reset
the F30HD
CONTACTOR
Pressure
Switch
F30HD
3 PHASE PUMP WIRING DIAGRAM
C
NO
NC
A
N
AUX
E
N
E
A
MAIN ISOLATION SWITCH
PRESSURE SWITCH
F30HD
240V AC SUPPLY
MAXIMUM MOTOR SIZE
3.75kW 5HP
PUMP
MOTOR
SINGLE PHASE WIRING DIAGRAM
C
NO
NC
AUX
E
PUMP
MOTOR
-
+
+
-
AC or DC
SUPPLY TO PUMP
PRESSURE
SWITCH
ISOLATION SWITCH
USE TO RESET THE
CONTROLLER
CONTACTOR
12 to 24 VDC Supply
F30-DC
F30-DC WIRING DIAGRAM
ELECTRICAL
The F30 flow switch requires a stable supply voltage in order to operate
correctly. Pay particular attention to cable sizes, and ensure cables are
adequate for the specific pump motor load. This is particularly relevant
where long cable runs are to be used in the installation. If the voltage
drop associated with the pump motor starting is excessive the F30 will
reset, and may cause the pump to jog. Jogging can snap a pump shaft
very quickly, so please take all precautions to ensure the voltage supply
to the F30 is stable and adequate for the job. Supply voltage must be
within the limits set out in the table below.
VOLTAGE RATING
MODEL
MAXIMUM SUPPLY
VOLTAGE
MINIMUM SUPPLY
VOLTAGE
F30-240HD
F30-240
260V AC
160V AC
F30-24HD
F30-24
18V AC
28V AC
F30-DC
24DC
10V DC
IMPORTANT NOTES:
Never connect a DC load across the normally open terminals of the F30HD.
These controllers are only suitable for AC applications. The F30HD models are
designed for motor control and do not have voltage free contacts. To operate
properly all F30HD models require a minimum load of 10mA impressed
across the normally open terminals. The small leakage current across the
normally open terminals means the F30HD flow switches are not suitable for
driving small loads such as low wattage relays or electronic timers. For such
applications use a standard F30-240 or F30-24 flow switch. The F30-DC can be
used in AC or DC applications, its relay contacts are voltage free.
The F30-240HD and F30-24HD flow switches incorporate a solid state
drive to control a pump connected to their common and normally open
output terminals. The solid state drive enables very large pump motors
to be directly controlled, without the need for an interposing contactor.
The maximum size motor that can be controlled directly by the F30HD
flow switches is 3.75kW 5HP. At 240VAC the maximum recommended
continuous current load controlled by the F30HD must not exceed
16 Amps. The maximum motor starting current should not exceed 60
Amps.
Wire the system according to the model number of the controller and
the circuit schematics on this sheet. The F30 is normally connected to
an external pressure switch which must be set to cut in and out at the
correct settings before the controller can operate properly.
All F30 controllers have a single set of normally closed terminals, marked
“C” and “NC”, with a 16Amp 240V resistive rating. These contacts can be
used to control an external alarm or loss of flow warning light if required.
The F30-DC is essentially a control device that incorporates an S.P.D.T.
relay as its output. The F30-DC does have the capacity to directly
control small AC pump motors up to 0.75kW 1HP. For all DC motor load
applications, an interposing relay must be used between the F30-DC and
the load.
Several examples of typical wiring arrangements are provided on this
installation sheet. The circuits provided are intended as a guide only
to show the most basic and common ways to connect an F30 pump
controller.
FUNCTIONS OF THE INDICATOR LIGHTS
PADDLE LIGHT (3)
FUNCTION
GREEN
Indicates that the paddle is in the flow
position. Normally off, this light turns
green as soon as flow pushes the
paddle forward. The pump will be on
whenever this light is green.
SLOW RED PULSE
Blinks red every 2 seconds to indicate
power is on. This light will blink red
whenever the power is on but the
pump is off.
RAPIDLY FLASHING RED
This light flashes rapidly red to indicate
that the pump has been run dry and
the F30 has shut it down. The blue
auxiliary light will also be on indicating
the pressure is low.
TIMER LIGHT (4)
FUNCTION
GREEN
Provided the start-up timer is not set
to zero, this light indicates the start-up
timer is running, only comes on when
the F30 is first powered up. The pump
will run while ever this light is on.
RED
Turns red to indicate the run-on timer
is running. Can only come on after the
start-up timer has timed out. Provided
the run-on timer is not set to zero, this
light will turn red whenever the paddle
swings to the off position, indicating
flow has stopped. This light also turns
red whenever the pressure switch
closes. This red light can only ever be
on while the pump is running.
AUXILIARY LIGHT
FUNCTION
BLUE
This light indicates the true status of
the remote pressure switch. It is on
whenever the contacts of the pressure
switch are closed. The pressure switch
contacts must be open and this light
off before the run-on timer times out.
If not, the F30 will shut down the
pump and go into alarm mode, with
the paddle light flashing rapidly red,
indicating dry run. Once in this mode,
the pump will not restart until the
power to the F30 is reset.
