During the past two decades, the wastewater industry has significantly increased the use of variable frequency drives (VFDs). Gorman-Rupp’s VFD control panels offer superior wastewater flow control compared to constant-speed pumps in wastewater pumping stations. This is beneficial as utilities seek ways to reduce power costs.

Advantages of Gorman-Rupp’s VFD Control Panels:

• Power Savings: VFDs help reduce energy consumption.
• Enhanced WWTP Processes: They improve wastewater treatment plant processes.
• Reduced Risk of Overloading Downstream Sewer: VFDs ensure that the pumping rate matches the inflow.
• Extended Equipment Life: Soft start and stop features extend the life of pumps, motors, valves, and couplings.
• Reduced Current and Voltage Fluctuations: VFDs reduce inrush current and voltage dips, minimizing stress on the system.
• Reduced Water Hammer: They reduce the potential for water hammer, protecting the system from damage.
• Flexibility: VFDs provide the flexibility to change the pumping rate as needed.

Gorman-Rupp’s Pump Control Panels with VFDs:

• Standard Product: These panels come in NEMA 3R steel enclosures with panel heaters and ventilation fans.
• Key Features: They include a lockable main circuit breaker, Hand-Off-Auto selector switch, elapsed time meter, and a door-mounted keypad message center (HIM-Human Interface Module).
• Safety Features: The panels have a door-mounted disable push button and indicating lights for pump run, VFD fault, and no flow/load.
• Drive Details: They use Allen-Bradley Power Flex 753 variable frequency drives and are UL-listed.
• Remote Operation: The panels allow for remote start/stop operation with panel connectors for inputs.
• Sensor Options: They can be set up for two float inputs (start and stop levels at a preset speed) or a single transducer input (level and pressure).
• Monitoring: Dry contacts are provided for monitoring drive run, drive faulted, no flow/load, and torque/power out-of-range alarms.
• Shipping: Control panels are available to ship from Gorman-Rupp in four weeks or less.

Lift Station VFD Control Panels from Gorman-Rupp:

• Customized Control: These panels are designed to precisely match controls to pumps and motors, ensuring optimal system performance.
• Liquid Level Control Options: Customers choose from four liquid level control options when selecting a Gorman-Rupp ReliaSource solids-handling pump package.
• Reliable Performance: Gorman-Rupp control panels offer simple, reliable performance, with features for accurate start/stop operation, alternation, level sensors, pump delay, and alarms.
• Advanced Control Systems: Some panels include soft starters or variable frequency drives (VFDs) to manage electric inrush, hydraulic shock, and starting and stopping torque-based management and monitoring.

Contact Envirep

Envirep/TLC serves the municipal and industrial water and wastewater market in Pennsylvania, New Jersey, Maryland, Delaware, the District of Columbia, Virginia, and West Virginia.

Do you need help selecting the right equipment for your application? Contact Envirep at 717-761-7884 or sales@envirep.com.

By Joshua Price, Plant Sales at Envirep/TLC