Franklin Electric SubDrive15 Manual De Uso página 29

Note: A 10-foot (3 m) section of pressure sensor cable is provided with the controller,
but it is possible to use similar 22 AWG wire for distances up to 100 feet (30 m) from the
pressure sensor. A 100-foot (30 m) section of pressure sensor cable is available from your
local Franklin Electric distributor. Low capacitance cable must be used if the pressure
sensor is being connected with cable not supplied by Franklin Electric. Cable length
longer than 100 feet (30 meters) should not be used as it can cause the drive to operate
incorrectly. (See Accessories section on page 35 for details.)
8. Verify that the SubDrive/MonoDrive unit is properly configured for the horsepower
rating of the motor and pump being used. (See the Pump Sizing section on page 26 for
information on Drive Configuration.)
9. Replace the cover. Tighten screw to 10 in-lbs (1.1 Nm).
10. Connect the other end of the pressure sensor cable with the two spade terminals to
the pressure sensor. The connections are interchangeable.
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 with the
drive off. (See Table 4 on page 20.)
Measure the tank pre-charge with a pressure gauge at its inflation valve and make the
necessary adjustments.
12. The pressure sensor communicates the system pressure to the SubDrive/MonoDrive
controller. The sensor is preset at the factory to 50 psi (3.4 bar), but can be adjusted by
the installer using the following procedure:
a. Remove the rubber end-cap.
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 (1.7 and 5.5 bar). Note: 1/4 turn = approximately 3
psi (0.2 bar).
c. Replace the rubber end cap.
d. Cover the pressure sensor terminals with the rubber boot provided (Figure X). Do
not place boot in direct sunlight.
SubDrive/MonoDrive
29