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Franklin MonoDrive Controller, NEMA 1

Part Number 21257
Franklin MonoDrive Controller, NEMA 1
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MSRP
MSRP:  $1,327.00
Your Savings:  $464.45
Your Price:  
$862.55
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Description

The MonoDrive from Franklin Electric

Convert your single phase submersible pump system to constant pressure. The MonoDrive control will replace your 3/4 hp or 1 hp control box to make your water well system constant pressure, giving you water pressure like pressure available only in the city.

The MonoDrive control will vary the speed of your three wire 1/2 HP 230 Volt, 3/4 HP 230 Volt, or 1 HP 230 Volt Single Phase submersible pump motor. By replacing your control box with the MonoDrive control, and replacing your pressure switch with the special pressure single pole switch, you can convert your water well system to a constant pressure system, that will provide a specified pressure whenever you call for water (up to the maximum of 60hz performance of the water end/motor installed). The MonoDrive will check the special pressure switch every 1/10th of a second so that it can keep precise control of your pump with a typical plus or minus of 1 PSI in system pressure. Therefore, the MonoDrive will eliminate pressure cycling like you are used to with a typical 30/50 or 40/60 pressure switch.

The control will start the motor with a soft start at about 1800 rpm and will run the motor at speeds up to 3450 rpm. The pump performance will be constant pressure at gallons per minute of up to the full performance curve for your pump model. If you open one valve, the motor will run just fast enough to keep a constant pressure of water coming out of the valve. When more demand is made on the well system, the control speeds up the motor to provide a constant pressure at your new demand.

The pressure switch is adjustable by using the Allen wrench provided. Under the rubber boot is a rubber plug you remove to adjust the pressure. Therefore, the well pump can be set up to provide any specific pressure you desire. After you adjust the pressure setting of the pressure switch, you will need to drain your pressure tank of water and adjust the pressure above the bladder to 70 percent of the switch setting (if the switch is set to 60 PSI, then the bladder should be set at 42 PSI). If you are using the pressure switch at the factory setting of 50 PSI, you will need 35 PSI in the top of your bladder style pressure tank.

Take a shower, flush to toilet, do the wash, and maybe sprinkle the lawn. The MonoDrive constant pressure controller and the special pressure switch will keep a constant flow of water at a specified pressure coming.

The MonoDrive protects you against running dry. If your well was to drop the water level to a point where it is out of water, the control will shut down. After 30 seconds it will attempt to restart, and if all is well, will provide the water at a constant pressure. If after restarting, the system shuts down again because of low water level, it will stay off based on the time it pumped before failing again, up to 5 minutes.

The MonoDrive control also protects against low line voltage, since the MonoDrive control will operate from 200 V up through 260V. Built in protection for high voltage and lightning surges is provided, along with fault detection for open or short circuits. If the pump becomes bound, the MonoDrive will use auto reversing torque to free the pump. The MonoDrive can run your water system with a constant pressure at pressures of from 25 PSI up through 80 PSI settings.

Features of SubDrive & MonoDrive 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, including:
    • Surge protection
    • Underload
    • Undervoltage
    • Locked pump
    • Open circuit
    • Short circuit
    • Overheated controller

Features for the 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 1 enclosure
  • Single-phase, 3-wire Franklin Electric motor
Horsepower (HP): 1/2, 3/4, 1
Voltage: 190-260 Volt, 60/50 Hz, Single Phase In, 30-60 Hz Variable Frequency Single Phase Out
Amperage: 5.7 (1/2 HP), 8.7 (3/4 HP), 11 A (1 HP)
Phase: Sinle Phase Input / Single Phase Output
Wiring Configuration: 3 Wire w/ Ground
Requirements For Proper Operation:
NEMA 1 controller is rated for conditioned indoor use - keep free of dust, insects, etc. Motor & all cable to motor must be 3 wire WITH ground. We recommend that the wiring be checked for continuity to ground - if wires have less than 500k ohms to measured to ground, replace wiring at same time as controller. If possible, check motor separately and replace as necessary.
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