RainFlo PC115A User manual

PC115A
Pump Controller
USER MANUAL
®

1
It is the installer’s responsibility to read, understand, and comply with these instructions.
A Guide to Your PC115A Pump Controller
The RainFlo PC115A provides automatic multifunction control for your
water pump. The PC115A electronic controller commands the starting
and stopping of single-phase electric water pumps whenever a tap or
valve connected to the installation is opened or closed, respectively.
When the pump is started, it keeps running as long as any connected tap
remains open, supplying the network with the required ow at the related
pressure.
TABLE OF CONTENTS
1. Diagram.............................................................1
2. Physical Characteristics ....................................2
3. Installation .........................................................2
4. Starting and Operating ......................................3
5. Performance Specications...............................5
6. Friction Loss ......................................................6
7. Troubleshooting.................................................6
1. PC115A CONTROLLER DIAGRAM
Pressure gauge
Reset button
Outlet
LED
• Power
• Failure
• Pump on

2
2. PHYSICAL CHARACTERISTICS
• Inlet connection: 1”
• Outlet connection: 1”
• Water hammer check valve
• Dry-running protection system
• Pressure gauge
• Manual start button (Reset)
• Power supply LED (Power)
• Pump switch-on LED (On)
• Safety system activation LED (Failure)
3. INSTALLATION
Note: This device must be assembled and installed by a qualied elec-
trician in accordance with local laws. Install a GFCI grounded circuit.
Handle with care. Impact can damage the product. Before installation,
make sure the unit shows no visible signs of damage.
Water Connection
The PC115A features an internal check valve and must be installed
with the arrows pointing upward, connecting the 1” threaded inlet to
the pump’s outlet and the 1” threaded outlet to the point of use with
the water inlet facing downward and the output above.
Before starting up the unit, ll the suction inlet with water as
specied in the pump’s manual.

3
Electrical Connection
Ensure the voltage supply corresponds to the rated voltage. Remove
the cover (faceplate) from the electronic board and make the elec-
trical connection according to the instructions shown inside. This
controller can also be used with a single-phase pump with electrical
demand greater than 16A, or a three-phase pump, using an auxiliary
remote control switch (115V coil). In this case, the electrical connec-
tions must be made as shown in the diagram.
WARNING: Power supply
voltages other than those
specied or improper con-
nections can permanently
damage the electronic
components and will void
the warranty.
SOOW or H07RN-F
type cables (.35-0.5in/
9-12mm O.D.) must be
used in order to ensure
IP65 protection.
4. STARTING AND OPERATING
Start Up
1. Check that the pump is primed properly, then partially open a
faucet or valve in the user circuit.
2. Turn on power to the controller; the power LED will light up
(Power).
3. While the pump is running, the corresponding LED (On) will
remain illuminated.
4. Close the open faucet or valve. After 10- 12 seconds the pump
will stop running, but the power supply LED (Power) will remain
lit. Improper priming will cause malfunctions to occur.

4
Starting Pressure Adjustment
(P. Start):
Starting Pressure is the pressure at
which the pump will re-start from the
idle condition. When the water pres-
sure drops to this setting, the pump will
start. This adjustment has no effect on
the maximum system pressure which
is determined solely by your pump’s
maximum output pressure. The pump
controller is factory set to start with a
minimum pressure of 28 PSI (1.9 bar). This pressure can be in-
creased up to 36.25 PSI (2.5 bar) by rotating the screw found at the
back of the cone-shaped end of the device.
To Set the Pump Start Pressure:
1. Read the pressure indicated by the gauge when the pump is
started.
2. Disconnect the power supply.
3. Open a faucet or valve to discharge the pressure.
4. Adjust the screw clockwise to increase (or counter-clockwise to
decrease) the start pressure.
5. Supply power to the controller; if you are not satised with the
adjustment, repeat the operations described above until you
obtain the desired pressure value.
Operating Pressure
The maximum pressure of the pump (closing contact pressure) and
the minimum start pressure must comply with the values shown in
the table otherwise the controller will go into Failure mode. The max-
imum pressure of your pump must exceed the start pressure setting.
The maximum operating height between the pump and the highest
point in the system will depend on the pump start pressure setting.
These limits are specied in the table below.
Start Pressure Max. Operating
Height
Max. Pump Pressure
Greater Than
22 PSI 33 ft 44 PSI
29 PSI 49 ft 51 PSI
36 PSI 66 ft 58 PSI

5
Pressure Gauge
The PC115A pump controller features a built-in pressure gauge
located on the right side of the unit. This gauge features measure-
ment units in both PSI and bar. One bar is approximately equal to
atmospheric pressure at sea level. In terms of water pressure, 1 bar
= 14.5037 PSI.
Pressure Gauge (bar) Pressure (psig)
2.0 29.0 PSI
3.0 43.5 PSI
4.0 58.0 PSI
5.0 72.5 PSI
6.0 87.0 PSI
7.0 101.5 PSI
Automatic Reset Function
When a failure is experienced, the automatic reset function will begin
a series of starts to attempt to restore operation without manual
intervention. For example; the pump has a water failure, after ve
minutes of low water it will do a 25 second reset, attempting to prime
the pump. If it is able to prime the pump, the failure will clear and the
pump will resume normal operation. However, if the failure persists,
the system will attempt to reset every 30 minutes for 24 hours. If
unable to reset, the system will require manual intervention for assis-
tance.
5. PERFORMANCE SPECIFICATIONS
• Power supply voltage: (1) 115-125V
• Maximum current: 16A
• Max pump power: 1100W (1½ HP) at (1) 115-125V
• Frequency: 50/60Hz
• Protection class: IP65
• Ambient temperature: 0 /+140°F
• Liquid temperature: 0 /+140°F
• Max ow rate: 44 GPM
• Adjustable starting pressure: 22-36 PSI
• Max operating pressure: 145 PSI

6
6. CONTROLLER FRICTION LOSS
7. TROUBLESHOOTING
Issue Solution
The pump does not
start
• Try pressing the manual reset button.
• Check the power supply. The Power LED
must be illuminated.
• Electronic board malfunction: disconnect
the pump from the electrical mains and
reconnect it; the pump should start, if it
does not replace the controller board.
The pump keeps
stopping and starting
• There is a small leak in the delivery pipe-
line: check for any leaking taps or running
toilets.
The pump does not
stop
• Water loss exceeding 0.8 GPM. Make
sure that all the taps along the pipeline
are closed and that there are no leaks.
• The electrical connection is incorrect:
refer to the instructions, page 3.
• Electronic board malfunction: replace the
electronic board.

RainHarvest Systems | RainHarvest.com | 800-654-9283 | 090220