Geotech Variable Frequency Drive

Electrical Submersible Pump Controller

The Geotech Variable Frequency Drive (VFD) is designed to operate and protect the Redi-Flo2® pump. With the turn of a knob, an operator can precisely control the discharge flow rate from the pump from 8 GPM (30 LPM) to 100 milliliters per minute, to depths down to 280 feet (85m).

  • Precise Flow Control
    Turn the knob or use the push button control for greater control over the discharge flow rate for better accuracy and precision during sampling.
  • Wide Performance Range
    Not just one performance curve, the Geotech VFD covers a range of performances and can function at any point of operation within that range.
  • Choose Input Power
    Either 120V or 230V, single-phase AC input power is available.
  • IP66/NEMA 4x Enclosure
    The NEMA 4x enclosure is designed for outdoor duty and is resistant to damage as a result of incidental exposure to rain. Designed for wash down applications.
  • Optimized Volts/Frequency Pattern
    The Geotech VFD V/Hz pattern is specially optimized to allow the most efficient operation of the Redi-Flo2® variable performance pump.
  • Motor Protection
    The Geotech VFD will protect the Redi-Flo2® Variable Performance Pump from adverse motor conditions such as, over- and under-voltage, over-current, and groundfault.


Input (115V model)   115V (±10%)/1PH/48-62Hz/23A
Input (230V model)
  230V (±10%)/1PH/48-62Hz/23A
Wetted Parts:   316 Stainless steel, PTFE, Viton®
Acceleration Time (preset)   0 to 400Hz, 5 seconds
Deceleration Time (preset)   0 to 400Hz, 5 seconds
Recommended Input Protection (115V)   Fuse, 600V, 30A, Fast Acting, UL Class CC or J
Recommended Input Protection (230V)   Fuse, 600V, 25A, Fast Acting, UL Class CC or J
Power Cord   18AWG, 300V, 6 ft.
Minimum/Maximum Frequency   1Hz/400Hz

Dimensions and Weight
Dimensions (L x W x D):
Protective Case
VFD Only

19.2" x 15.2" x 9.0" (49 x 39 x 23cm)
10.12" x 7.40" x 7.16" (26 x 19 x 18.2cm)
VFD, Cords and Case
VFD Only

18 lbs. (8.2 kg)
8 lbs. (3.6 kg)

Operations Conditions
Ambient Temperature:   -20–50°C (-4–122°F)

Storage Conditions
Ambient Temperature:   -40–60°C (-40–140°F)
Maximum Humidity:   95%, non-condensing

Protective Case Construction
Case:   Lightweight, Strong HPX® Resin, IP66/NEMA 4


  115V Input
230V Input

Minimum Generator Size (Redi-Flo2®)
For Generators With Voltage Regulation:
For Generators Without Voltage Regulation:
Recommended For Optimal Performance:

  (2000) Watts at 115/230 VAC, single phase
(5000) Watts at 115/230 VAC, single phase
(3000) Watts at 115/230 VAC, single phase w/voltage regulation


Performance Curve for the Redi-Flo2
Performance Curve for the Redi-Flo2®







Geotech 115V Variable Frequency Drive