Xylem IM182 Balanced Flow - Manual (Page 6)

6
3: INSTALLER PRE-START SELECTIONS
DRIVE SETTINGS AND PROTECTION
Maximum Frequency (Speed) Switch
The Maximum Frequency switch sets the maximum
frequency (motor speed) the controller uses to energize the
motor to either 60 or 80 Hz.
• 60 Hz - Use for matched pump-motor combinations
where the motor HP and pump HP are the same.
Example: 2 HP WE and 2 HP Motor
• 80 Hz - Use for mis-matched pump-motor combinations
where motor HP is larger than the pump HP (typically 2x
larger).
Example: 1 HP WE and 2 HP Motor
• The unit is factory pre-set at 60 Hz.
Dry Well Sensitivity
Selections are High or Low. This function protects the
system from running dry. The selection depends on
several conditions and pump size.
Start with the sensitivity on high and test by running
pump at various flows. If a dry well fault is triggered,
switch to low setting. The unit is factory pre-set at high.
Restart times in minutes are: 1, 10, 20, 30, 60, 60 and
repeating every 60 minutes thereafter.
Example: 1st fault shuts down for 1 minute, next fault
shuts down for 10 minutes, then 20, etc.
Broken Pipe Protection
ON Position - Used for constant pressure systems. The
drive will turn off if the system pressure drops 20 PSI
below the system set point pressure for a minimum of
30 seconds. This fault must be manually reset, it will not
clear automatically, this may prevent property damage if
a pipe breaks.
OFF Position - Use for open discharge situations such as
flushing a tank, filling a pond or tank, or whenever the
system pressure will be 20 psi or more below the system
set point pressure.
Pressure Drop – 5 PSI or 20 PSI
The pressure drop before the pump restarts can be set to
the standard 5 PSI or to 20 PSI.
The 20 PSI setting results in fewer starts for systems with
leaks. It is recommended for irrigation systems. It will
require a tank pre-charge adjustment. See Tank Sizing.
CURRENT LIMIT PROTECTION
Motor Overload Setting Dial
Failure to properly adjust the Motor
Overload Setting before applying power may
damage the motor or wire and void the warranty.
• Use Table 2 to determine which controller and setting to
use. Note that some 200V motors require upsizing to the
next larger controller.
• Set the Motor Overload - Turn the dial pointer to align
with the motor’s service factor amps (SFA) as listed on
the Motor Overload / Current Limit chart. Choose the
amperage value from the Current Limit Settings chart
on UIB that is closest to the SFA listed on the motor
nameplate but not higher.
• See Table 3 or the motor nameplate for Motor Amperage
ratings. The controller limits the output current to the
value selected by this dial. It does this by lowering the
frequency and voltage. If the current does not come
within the selected value by the time the frequency is at
40Hz, the controller will shut down and indicate Bound
Pump error (4 red blinks).
PRESSURE ADJUSTMENT
Pressure Adjustment Pushbuttons
The INCREASE and DECREASE pushbuttons are used
to set the desired pressure. To adjust pressure, press and
hold (do not tap) the button until the desired pressure is
obtained. It may take a full minute to adjust the pressure
from maximum to minimum, please be patient. Pressure can
only be changed when the pump-motor is running.
Controller Status Indicator (Light Visible Through
Window in Cover)
The controller status indicator light has 3 possible modes:
• Solid green = Standby, pump not running. There is no
water flow or the SWITCH INPUT is open.
• Blinking green = Pump running. There is flow (possibly a
leak) and the SWITCH INPUT terminals are connected to
each other (closed).
• Red = Error/Fault. Light will blink to indicate a particular
fault. See Troubleshooting Section for Fault Codes.
Purging System
Open a valve and turn power on to the controller. If
the system pressure is below the factory preset pressure
setting (50 psi), the status light will begin blinking green
indicating that pump is running. The controller hums
when it is running. This is normal.
It is common for the pump to be air bound at
first, especially with shallow wells. In this case, the
controller will begin testing for a dry well (refer to the
troubleshooting section for a description of Dry Well
Detection).
Once the water is flowing, be sure to open all valves to
purge air from the system.
Checking Rotation
It is possible that the motor is rotating in
the wrong direction. The pump will work
but will have greatly reduced performance if rotating
backwards.
To check rotation, perform the following test:
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, and wait 5 minutes for the hazardous voltages
to discharge.
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.
3. INSTALLER PRE-START SELECTIONS
WARNING
WARNING