Xylem IM229 R06 Aquavar SOLO - Manual (Page 11)

11
6: ADVANCED SETTINGS / OPTIONS
WHEN TO USE ADVANCED SETTINGS
• Failure of the controller to go into standby mode (pump
stopped) is sometimes caused by the tank or check valve.
First insure that the tank pre-charge pressure is correct,
refer to Tank Sizing and Setting section. The system
must be drained to properly check the tank pre-charge
pressure. A faulty check valve or system leak will allow
a system pressure drop preventing the controller from
shutting down as it will see flow. Spring type check valves
should be used for every 200’ of vertical pipe and one on
the pump side of the tank and pressure sensor. If the tank
and check valve appear to be operating correctly, use the
instructions and chart in Size of Pressure Variation for
Flow Detection in this section to make a program change.
• If the controller stops momentarily when there is plenty
of flow - see instructions to increase pressure variation in
Size of Pressure Variation for Flow Detection.
• If a Dry Well fault (2 red blinks) is not detected when
the well is dry, first ensure the motor overload setting is
correct. Then perform the Dry Well Power Calibration
while the system is at maximum flow (open several
faucets) and the pressure setting is normal. It may be
necessary to change the Dry Well Trigger Conditions to
Power Only or Pressure Only.
• If the Dry Well fault (2 red blinks) occurs when there is
plenty of water available, perform the Dry Well Power
Calibration while there is low flow and the pressure
setting is high.
• If a Dry Well is impossible e.g. pumping from a lake, it
can be disabled.
Most applications do not require changes to these advanced
settings. They are provided for the occasional application
that requires more flexibility to achieve desired results.
Advanced Settings include:
• Trigger conditions for No Water/Loss of Prime Fault
• Calibration of power threshold used for No Water/Loss of
Prime Fault
• Dry Well Restart Time Fixed or Progressive
• Size of pressure variation used for No Flow detection
Note: In the text below, “Dry Well” and “No Water/Loss of
Prime” mean the same thing.
HOW SETTINGS ARE CHANGED
Advanced settings are made by holding down pushbutton(s)
while at the same time switching a DIP switch in a specific
direction. In all cases, power to the controller must be on
and the pump stopped in order to make the desired change.
If needed, the pump can be forced to stop by disconnecting
one wire from the switch input terminal block.
After settings have been changed, the controller must run
and stop the pump for the setting to be stored in memory.
Once this is done, removing power will not affect settings.
There is no limit to how many times the settings can be
changed.
Settings are described below. Where applicable, after a
description, there is a table showing which pushbutton(s)
and DIP switch to use to make a particular setting. The
tables show which pushbutton(s) to hold down, which DIP
switch to flip and the direction to flip it. If the DIP switch is
in the wrong starting position, move it before pressing the
pushbutton.
For example, suppose a setting calls for flipping a DIP
switch from left to right but it is already in the right
position. In that case, before pressing any pushbuttons, you
would first flip the switch to the left position. Then you
would press the pushbutton and flip the switch to the right.
You can switch the DIP switches all you want without
affecting any of the advanced settings as long as no
pushbuttons are pressed. You can change settings as many
times as you want. Be sure to put DIP switches back in the
required positions after the setting are done.
RESETTING THE FACTORY DEFAULTS
Controller settings can always be returned to factory
defaults by pressing both pushbuttons for 10 or more
seconds while controller is powered and the pump is
stopped. Default controller settings are:
• Pressure Setting = 50 PSI
• Dry Well trigger = Low Pressure AND Low Power
• Dry Well power level = factory default which is based on
motor overload switch
• Dry Well restart time = increasing 1/10/20/30/60 min.
• Pressure variation = +/-2 PSI.
DRY WELL TRIGGER CONDITIONS
Dry Well fault has four choices for trigger conditions. The
factory default is to trigger when power and pressure are
both low. This is the best choice for most applications. The
other three choices are Low Power only, Low Pressure only
and disabled. Low Pressure is defined as being less than 75%
of pressure setting.
Pushbutton DIP Switch Direction to
Dry Well Trigger Condition to Hold to Flip Flip
Down DIP Switch
Low Pressure + Low Power*
Top
Left to Right
Low Pressure Only
Top
Right to Left
Low Power Only
Bottom
Left to Right
Disabled Right to Left
* Factory Default
DRY WELL POWER CALIBRATION
While pump is pumping water press and hold both
pushbuttons until LED turns orange. This will calibrate
the power level at which the Dry Well fault occurs. This
calibration is especially important when Low Power only
is used as the trigger condition. Hold the pushbuttons
for at least 3 seconds to get the LED to turn orange. The
controller requires the pump to be running at least at 75%
of full speed before allowing calibration. If the LED does
not turn orange ensure the Max Speed switch is in the
correct position (usually 60 Hz). It may be necessary to flow
more water and/or temporarily increase the pressure setting
to get the pump speed to 75%. If power is not calibrated,
the controller will use a default value based on the setting of
the motor overload setting dial.
The Dry Well Sensitivity DIP switch determines the
percentage of the power level at which to trigger. Low
Sensitivity uses 75%, High Sensitivity uses 80%.
6: ADVANCED SETTINGS / OPTIONS