4. Start Up Procedure; Checking For Leaks; Run/Stop Input Options - Xylem CentriPro Aquavar ABII+ 3AB2 Manuel D'instruction

this value to the motor overload setting. If the motor
overload setting is set too low, nuisance tripping on Over
Current (04, 4 red blinks) can result.

4. START UP PROCEDURE

4: START UP PROCEDURE
Purge the System of Air
• Insure that plumbing connections are tight and wire
connections are correct.
• Partially open a valve and turn power to controller on.
• Run the pump and controller with the furthest and
highest faucets or valves in the system open. This will
allow all air to escape the piping system.
• When flow is constant, close the faucets or valves and
allow the system pressure to reach the pressure setpoint
and shutdown.
PRESSURE ADJUSTMENT – Only if pressure
other than 60 PSI is desired:
• Adjust tank pressure according to the desired set pressure
- see Tank Sizing and Tank Pressure Setting section.
• Open a faucet and allow pump to start and purge the
system of air.
• Press and Hold the UP or DOWN button until the desired
pressure setpoint is shown on the Status Display.
• The larger the tank the longer it will take to increase
pressure.
• When desired pressure is reached, close the faucet and
allow the system to shut down.
Pump size determines the maximum flow and head which can
be provided, if flow or head are not sufficient and rotation on
three-phase units has been verified, a larger pump is required.

Checking for leaks

Constant pressure systems utilizing small tanks run
whenever there is demand. Even small leaks can prevent
a pump from turning off. To check for leaks, close all
valves, turn power off to the controller, and note the
pressure displayed on the pressure gauge. Tap the gauge
to ensure you get an accurate reading.
Wait ten minutes and check the gauge again tapping to
prevent the needle from sticking. If the pressure dropped
then the system may have a leak*.
*If a system is pressurized after having been un-
pressurized, it will continue to expand for several
minutes. This expansion causes the pressure to drop
and can be misinterpreted as a leak. Allow a system to
stabilize for 10 minutes under pressure before
performing the aforementioned leak test.
A spring check valve placed on the pump side of the
tank and transducer will often improve the ability of the
system to shut down.
Checking Rotation
For three phase motors, it is possible for the motor to
rotate in the wrong direction. If running backwards,
the pump will work but it will have greatly reduced
performance.
To check rotation, perform the following tests:
Connect an amp probe to one of the power supply
wires. Run the system with several valves open and note
the pressure and amps. Leave the valves open, turn the
power off.
Electrocution Hazard. After turning off
DANGER
power, wait 5 minutes for hazardous
voltages to discharge before proceeding to swap wires.
Swap red and black motor leads where they connect to
the controller terminal block (NOT L1 and L2).
Turn power back on and let the system pressure
stabilize. Again note the pressure and amps. Whichever
wire position provided the most pressure/flow is the
correct wire position. If there was little difference in the
pressure/flow, then whichever had the lower amp reading
is the correct wire position.
Turn the power off, wait 5 minutes and swap the wires
back if necessary.
Replace the plastic protective covers on the terminal
block.

5. RUN/STOP INPUT OPTIONS

5. RUN/STOP INPUT OPTIONS
Run/Stop Input
Electrocution Hazard. Opening RUN/STOP
DANGER
INPUT does not de-energize controller
or any of its outputs. Always treat wire terminals of this
controller as energized until power supply to the controller
has been removed for 5 minutes.
RUN/STOP INPUT - for connection of an external switch
or control device used to start and stop the pump. Devices
such as an over-pressure switch, level (float) switch or any
other non-powered switch (time delay, flow, etc.) can be
connected to this input.
Run/Stop Input wires must never be in the
CAUTION
same conduit with power wires. There
should always be a minimum of 12" between the Run/Stop
Input wiring and the power wires. Failure to separate these
wires can cause controller malfunction.
The Run/Stop Input terminals have a Jumper Wire installed
at the factory (do not confuse the jumper wire on the
Run/Stop Input with the Transducer Jumper next to the
Transducer Connection Terminals, see Transducer Jumper
below). The Run/Stop Input terminals must be connected
(closed) for the pump to operate. If they are not connected
the Run/Stop Indicator (visible inside the enclosure) will
be Solid RED, the Status Display will display STOP and the
Controller Status Light will be Solid GREEN indicating
that the pump-motor is off. Remove the Jumper Wire when
connecting a float or over-pressure switch.
CONSTANT PRESSURE SYSTEM - with an Over-Pressure
Switch:
• Connect two wires from the Load and Lead connections
of a pressure switch to provide over-pressure protection.
In the event the pressure transducer fails, this will prevent
high pressure from damaging piping.
• The over-pressure switch cut-out setting must be a mini-
mum of 10 PSI higher than the system set point pressure.
• Set the over-pressure switch cut-out 5 - 10 PSI lower than
the pressure relief valve (PRV) pop-off pressure. This will
turn the system off before the pressure relief valve opens.
• Ex. On a system with a 50 PSI set point, set the over-pres-
sure switch cut-out at 60 PSI with a typical PRV setting of
75 PSI. In the event the transducer fails at high pressure
the switch will turn the system off before the PRV pops.
9