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10A. Connect the other end of the pressure sensor cable with the two
spade terminals to the pressure sensor. The connections are
interchangeable (Figure 4A).
10B. Connect the other end of the pressure sensor cable with the two
¼" quick connect terminals to the pressure shut-off sensor. The
connections are interchangeable (Figure 4B).
11. Set the pressure tank pre-charge at 70% of the desired water
pressure setting. 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 infl ation valve and make the necessary
adjustments.
12. The pressure sensor communicates the system pressure to the
SubDrive300 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 4A).
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 (¼ turn = approximately 3 psi).
c. Replace the rubber end cap.
d. Reset the pressure tank pre-charge to the appropriate pressure.
e. Cover the pressure sensor terminals with the rubber boot
provided (Figure 4A).
NOTE: Ensure that the system is properly grounded all the way to the service
entrance panel. Improper grounding may result in the loss of voltage surge
protection and interference fi ltering.
▲ CAUTION
!
When increasing the pressure, do not exceed the mechanical stop on
the pressure sensor or 80 psi. The pressure sensor may be damaged.
Figure 4A:
Pressure Sensor
Figure 4B:
Pressure Shut-off Sensor
Non-Adjustable
Set at 100PSI
Quick Connect
lead connect
Pressure
Sensor
Boot
Remove Rubber End Cap To Adjust Pressure
With 7/32" Allen Wrench