CATALOG INDEX
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ORDER

CATALOG INDEX
BY DEPARTMENT

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- [ Model SP-84
Sampling Pump System ]
- [ Model PRS-90 Product
Recovery System ]
- [ Portable Air Sampling
Pump ]
- [ Waterra Inertial Pump ]

The Redi-Flo Variable Frequency Drive (VFD) has been uniquely designed to operate and protect the Redi-Flo2® Variable Performance Groundwater Sampling Pump and the Redi-Flo4™ Variable Performance Sampling/Remediation Pumps. Due to the revolutionary electronics within the Redi-Flo VFD, the operator can easily change between the Redi-Flo2® Pump or the Redi-Flo4™ Variable Performance Pumps by simply turning a knob. With the turn of another knob, the operator can precisely control the discharge flow rate from the pump from a maximum of 50 gallons per minute to a minimum of 100 milliliters per minute, to depths to 950 feet of head.

Unlike most variable frequency drives, the Redi-Flo VFD is compatible with either 120V or 230V single-phase, AC input power. The operator can simply change the terminations of the power cord to accommodate the different voltages.

The Redi-Flo VFD can also be operated in the "Automatic Mode" in which the drive's output frequency is directly related to a 2-40 milliamp input signal.

The Redi-Flo2® Variable Performance Pump combines state-of-the-art technology into a light, compact and yet powerful submersible pump for precise, accurate and reproducible groundwater sampling. Designed for long-term reliability in dedicated monitoring wells, the Redi-Flo2® provides optimal sample quality with either traditional purging prior to sampling, or low draw-down passive sampling when operated with the new Redi-Flo VFD.

Study after study has shown the Redi-Flo2® Variable Performance Pump is the ideal sampling device for representative groundwater samples.

The Redi-Flo4™ Variable Performance Pumps are submersibles constructed of virgin Teflon® and stainless steel to handle the rigors of contaminated groundwater monitoring and continuous operation in remediation applications. The Redi-Flo4™ Variable Performance Pumps are designed to operate in 4 inch and larger wells to depths of 590 feet. The Redi-Flo4™ pumps have a built-in check valve to prevent  back-flow in the well after the pump is shut down. A user-friendly cable guard aids in the ease of variable length motor lead installation.

The Unique Features of the Redi-Flo VFD

• Precise Flow Control
  The ten-turn potentiometer provides greater control over the pump's discharge flow rate for better accuracy and precision during sampling.
• Wide Performance Range
  Instead of operating according to one performance curve, the Redi-Flo VFD allows for coverage of a range of performances and  can function at any point of operation within that range.
• Motor Protection
  The Redi-Flo VFD will protect the Redi-Flo Variable Performance Pumps from adverse motor conditions such as over-and-under-voltage, over-current, and groundfault.
• Dual Input Power Capability
  Either 120V or 230V, single-phase AC input power is accommodated simply by changing the power cord terminations.
• Dual Functionality
  The Redi-Flo can be easily switched to operate either the Redi-Flo2® pump or the Redi-Flo4™ Variable Performace Pumps.
• NEMA 3R Enclosure
  The enclosure of the Redi-Flo VFD is designed for outdoor use and will shed incidental exposure to water when operated is a horizontal position.
• Remote, Automatic Operation
  The Redi-Flo VFD can be remotely operated and controlled by an external 2-40 mA signal from a device like a pressure transducer or flow meter. With use of a PID, along with pressure transducer or flow meter, the Redi-Flo Variable Performance Pumps can maintain a constant draw down within the well, or maintain a constant flow rate from the pumps.
• Dry-Run Protection
  The Redi-Flo VFD can be configured to protect pump and motor from experiencing a prolonged "dry-run" condition. The drive can be automatically restarted after a specified delay.