Flint & Walling Commander Pro 75 - Manual (Page 8)

8
95 North Oak Street • Kendallville, IN 46755
Copyright 2012. All Rights Reserved.
10. Set the pressure tank pre-charge at 30% below the
desired water pressure setting (as per the table on
Page 3). To check the tank’s pre-charge, de-pressurize
the water system by opening a tap. Measure the tank
pre-charge with a pressure gauge at its inflation valve
and make the necessary adjustments.
Pressure
Sensor
Boot
Remove Rubber End Cap To Adjust Pressure
With 7/32" Allen Wrench
IL0326
Figure 8
A 10 foot section of cable is provided with the
CP WATER to connect to the pressure sensor.
Lengths of up to 100 feet can be used, provided the
appropriate shielded cabling is used. Consult the
factory for proper cable specification.
11. The pressure sensor communicates the system
pressure to the CP WATER SubDrive controller. The
sensor is preset at the factory to 50 PSI, but can be
adjusted by the installer using the following procedure:
A. Remove the rubber end-cap (Figure 8).
B. Using a 7/32” Allen wrench (provided), turn the
adjusting screw clockwise to increase pressure
and counter-clockwise to decrease pressure. The
adjustment range is between 25 and 80 PSI (1/4
turn = approximately 3 PSI).
C. Replace the rubber end cap.
D. Reset the pressure tank pre-charge to the
appropriate pressure.
When increasing the pressure, do not
exceed the mechanical stop on the pressure sensor or 80
PSI. The pressure sensor may be damaged.
12. Cover the pressure sensor terminals with the rubber
boot provided (Figure 8).
START-UP OPERATION
Apply power to the controller. A steady green light
indicates that the CP WATER SubDrive has power
but the pump is not running. The green light will flash
continuously when the pump is running.
NOTE: Conventional private water systems intermittently
fill a pressure tank as commanded by a standard pressure
switch (e.g. 30-50 PSI). The CP WATER SubDrive
maintains a constant pressure at the pressure sensor
up to the maximum capability of the motor and pump.
Although the pressure is constant at the pressure sensor,
pressure drops may be noticeable in other areas of the
home when additional taps are opened. This is due to
limitations in the plumbing and will be more pronounced
the further the taps are from the pressure sensor. This
would be true of any system, and if observed, should not
be interpreted as a failure in the performance of the CP
WATER SubDrive.