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Constant pressure systems are changing the standard for private well systems all over the country. A private water well is one of the best sources of water for your home, but just as in municipal water systems, water pressure may sometimes be insufficient for the changing demands of the home. If you have a problem with water pressure in your home, you may have noticed that your washing machine fills more slowly when your dishwasher is running, or that your shower sputters when your sprinkler turns on. You don’t like it, but you live with it.


Now you have a choice.


With a constant pressure system, you don’t have to schedule your day around your water usage. Franklin’s SubDrive and MonoDrive constant pressure controllers vastly improve your home water system. Using variable speed technology, SubDrive and MonoDrive continuously monitor water demand and adjust the speed of your pump to provide the water you need without pressure fluctuations. Available in a wide variety of ratings, these systems also provide:


  • Smooth, quiet operation
  • Choice of pressure settings
  • Built-in pumping system protection

Applications

Franklin Electric’s constant pressure controllers use state-of-the-art technology to provide constant water pressure through variable speed control of submersible water well pumps.

Features—All Controllers

  • Constant water pressure with a wide range of pressure settings
  • NEMA 3R (Outdoor), NEMA 4 (Outdoor) and NEMA 1 (Indoor) Enclosures
  • Easy installation
  • Soft start feature prevents water hammer and increases motor life
  • Works with small pressure tanks or existing larger tanks
  • Smart Reset® technology allows well recovery before restarting the pump
  • Single-phase input power with three-phase motor performance (see next page for details)
  • Excellent radio frequency interference shielding
  • UL and cUL listed
  • Built-in Diagnostics and Protection
    • Surge protection
    • Underload
    • Undervoltage
    • Locked pump
    • Open circuit
    • Short circuit
    • Overheated controller

Features — MonoDrive & MonoDriveXT

  • Selectable hp rating: MonoDrive (½, ¾, and 1 hp), MonoDriveXT (1.5 and 2 hp)
  • Easy installation – remove the 3-wire control box and install the MonoDrive
  • Can retrofit existing systems – no need to pull the pump
  • NEMA 4 & NEMA 1 enclosure
  • Single-phase, 3-wire Franklin Electric motor

Features — SubDrive2W

  • Selectable hp rating: (½, ¾, and 1 hp)
  • Easy retrofit installation – remove the pressure switch and install the SubDrive2W
  • Can retrofit existing systems – no need to pull the pump or motor
  • NEMA 3R enclosure
  • Single-phase, 2-wire Franklin Electric motor

Features — SubDrive75, SubDrive100, SubDrive150 & SubDrive300

  • Works with a standard three-phase Franklin Electric submersible motor
  • NEMA 4 & NEMA 1 enclosure
  • Three-phase performance with single-phase input
  • High starting torque
  • More efficient
  • Smooth running
PRODUCTINPUTOUTPUTENCLOSUREMODEL NO.
SubDrive2WSingle-phase, 50-60Hz, 207-253VSingle-phase, variable frequencyNEMA 3R587 020 3223
MonoDriveSingle-phase, 50-60Hz, 190-260VSingle-phase, variable frequencyNEMA 1587 020 3110
MonoDriveSingle-phase, 50-60Hz, 190-260VSingle-phase, variable frequencyNEMA 4587 020 3114
MonoDriveXTSingle-phase, 50-60Hz, 190-260VSingle-phase, variable frequencyNEMA 1587 020 4110
SubDrive75Single-phase, 50-60Hz, 190-260VThree-phase, variable frequencyNEMA 1587 020 3380
SubDrive75Single-phase, 50-60Hz, 190-260VThree-phase, variable frequencyNEMA 4587 020 3384
SubDrive100Single-phase, 50-60Hz, 190-260VThree-phase, variable frequencyNEMA 1587 020 4100
SubDrive100Single-phase, 50-60Hz, 190-260VThree-phase, variable frequencyNEMA 4587 020 4104
SubDrive150Single-phase, 50-60Hz, 190-260VThree-phase, variable frequencyNEMA 1587 020 4150
SubDrive150Single-phase, 50-60Hz, 190-260VThree-phase, variable frequencyNEMA 4587 020 4154
MonoDriveXTSingle-phase, 50-60Hz, 190-260VSingle-phase, variable frequencyNEMA 4587 020 4114
SubDrive300Single-phase, 50-60Hz, 190-260VThree-phase, variable frequencyNEMA 4587 020 6300

Drive Specifications

ProductRetrofit Existing?Motor RatingPump RatingInput VoltageInput HzInput AmpsOutput VoltageOutput HzOutput Amps
SubDrive2WYes0.5, 0.75 or 1 Hp, 230VAC 1Ø (Selectable)0.5, 0.75 or 1 Hp, (match motor rating)207-253 V 1Ø60<12AVariable, 1ØVariable (30-60 Hz)6.0 A (0.5 Hp) 8.0 A (0.75 Hp) 9.8 A (1 Hp)
MonoDrive*Yes0.5 Hp, 0.75 Hp, 1.0 Hp, 1Ø, 3W0.5 Hp, .75 Hp, 1.0 Hp190-260 V, 1Ø60/505.7 A (.5 Hp), 8.7 A (.75 Hp), 11 A (1.0 Hp)Variable, 1ØVariable (30-60 Hz)4.0 A (0.5 Hp), 6.6 A (.75 Hp), 9.0 A (1.0 Hp)
MonoDriveXT*Yes1.5 Hp, 2.0 Hp, 1Ø, 3W1.5 Hp or 2.0 Hp190-260 V, 1Ø60/5013 A (1.5 Hp), 16 A (2.0Hp)Variable, 1ØVariable (30-60 Hz)10 A (1.5 Hp), 12 A (2.0 Hp)
SubDrive75No1.5 Hp, 230 VAC, 3Ø.75 Hp (default), 1.0 Hp or 1.5 Hp190-260 V, 1Ø60/5011AVariable, 3ØVariable (30-80 Hz)5.9 A
SubDrive100No2.0 Hp, 230 VAC, 3Ø1.0 Hp (default), 1.5 or 2 Hp190-260 V, 1Ø60/5019 AVariable, 3ØVariable (30-80 Hz)8.1 A
SubDrive150No3.0 Hp, 230 VAC, 3Ø1.5 Hp (default), 2.0 Hp or 3.0 Hp190-260 V, 1Ø60/5023 AVariable, 3ØVariable (30-80 Hz)10.9 A
SubDrive300No5.0 Hp, 3Ø3.0 Hp (default), 5.0 Hp190-260 V, 1Ø60/5036 AVariable, 3ØVariable (30-80 Hz)17.8A

*N1 = NEMA 1 (Indoors), N4 = NEMA 4 (Outdoors), N3R = NEMA 3R (Outdoors)


Drive Shipping Information

 

SubDrive300

NEMA 4 Dimensions

NEMA 4 A B C D E F G H I J
Dimension 8.75"
(22.23 cm) 		12"
(30.48 cm) 		6"
(15.24 cm) 		15.34"
(38.96 cm) 		14"
(35.56 cm) 		14.75"
(37.47 cm) 		1.37"
(3.48 cm) 		0.885"
(2.25 cm) 		1.71"
(4.34 cm) 		4.75"
(12.07 cm)
Conduit Size - - - - -- 1 ½ 1¾ -

 

 

SubDrive2W

NEMA 3R Dimensions

NEMA 3R A B C D E F G
Dimension 6.20"
(15.75 cm) 		14.27"
(36.25 cm)		 9.91"
(25.71 cm)		 .44"
(1.12 cm) 		11.87"
(30.15 cm)		 5.5"
(13.97 cm)		 .88" / 1.13"
(2.24 cm) / (2.87 cm)
Conduit Size - - - - - - ½ / ¾

 

 

SubDrive75/100/150/MonoDrive/MonoDriveXT

NEMA 4 Dimensions

NEMA 4 A B C D E F G H I
Dimension 7.25"
(18.42 cm) 		12.6"
(32.0 cm)		 7"
(17.78 cm) 		13.6"
(34.5 cm) 		12.5"
(31.75 cm) 		14.8"
(37.6 cm)		 0.875" / 1.100"
(0.22 cm) / (2.80 cm)		 1.100" / 1.375"
(2.8 cm) / (3.50 cm)		 closed / 0.473" / 0.875"
closed / (1.20 cm) / (2.22 cm)
Conduit Size - - - - - - ½/¾ ¾ / 1 ½

 

 

SubDrive75/100/150/MonoDrive/MonoDriveXT

NEMA 1 Dimensions

NEMA 1 A B C D E F G H
Dimension 5.25"
(13.34 cm) 		11.5"
(29.21 cm) 		5.5"
(13.97 cm) 		9.75"
(24.77 cm) 		12.8"
(32.51 cm) 		14"
(35.56 cm) 		1.12"
(2.84 cm) 		0.5"
(1.27 cm)
Conduit Size - - - - - - ¾ -