Franklin 5870206300 ユーザーズマニュアル

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.

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 CAUTION

When increasing the pressure, do not exceed the mechanical stop on 
the pressure sensor or 80 psi. The pressure sensor may be damaged.

Non-Adjustable

Set at 100PSI

Quick Connect

lead connect

Pressure
Sensor
Boot

Remove Rubber End Cap To Adjust Pressure 

With 7/32" Allen Wrench