ADA Compliant Lifts Aquatic Dev. Group BECS Automated Controllers Chemical Feed Pumps Cleaning Systems
Deck Equipment Filter Systems Heaters Ozone Systems Paddock Main Drains
Pool Covers Pumps & Motors Pulsar Feed Systems Replacement Parts Specialty Chemicals
UV Treatment Systems Variable Frequency Drives Waterplay Water Level Control Water Testing
Variable Frequency Drives


Eco-Flow - C



Eco-Flow - C is a VFD system specifically designed for commercial pools and water features. Pumps ranging from 1 to 1500 HP can benefit from the Eco-Flow - C's many unique features.

Traditional methods of flow control are via control valves installed on the discharge side of the pump. Pumps are frequently over-sized and deliver too much flow when run wide-open and at full-speed. Using a flow control valve to partially dead head the pump not only wastes energy, but can often reduce the pump's life.

With Eco-Flow - C, Flow Control Valves can be set to their fully open position and the pump's speed adjusted to meet the flow requirements mandated by State Code. Alternatively, the system can be configured to maintain a "constant-flow rate". This so-called PID control will maintain the required flow rate, even as the filter starts to become dirty and where flow would normally decrease.

Adjusting the pump's speed to the exact flow rate required will:
  • Significantly reduce consumed electrical energy.
  • Reduce equipment wear.
  • Reduce operating noise.
  • Ensure state-mandated turnover rates are met.
Technical Data:



There exists a growing tendency within the pool industry to wrongly describe the NEMA rating of a VFD.

It is very common for the pool equipment room to comprise harmful chemical gases such as chlorine. These gases are known to have an adverse effect on electronic equipment and have been witnessed to cause corrosion even on stainless steel. Exposed circuit boards and components will be damaged when subjected to these chemicals. Even if the circuit boards are conformal coated, there remains the customers non coated wiring coming into and out of the drive, that will corrode.

Certain manufacturers are describing their VFD’s as being rated as NEMA 12 whereas in reality, they are simply taking their NEMA 1 VFD and housing it in a NEMA 12 enclosure which they then have to ventilate using fans and louver kits. Despite certain manufacturers describing these enclosures as being ‘Vented NEMA 12’ there is no such rating under NEMA standards. In venting the NEMA 12 (or NEMA 4), enclosure, it has, by default, now become a NEMA 1.

Note, you cannot house a NEMA 1 VFD in a totally enclosed NEMA 12 or 4 enclosure without ventilation. A VFD is 97% efficient – which means that 3% of the fully rated power is being converted to heat. A 10 HP VFD running at full load, will emit 223 watts of heat, you cannot generate this amount of heat inside a non ventilated panel. The only way to have a true NEMA 12 VFD is to arrange it so that the electronics are housed within a fully sealed enclosure and the VFD’s heatsink is open to atmosphere.

Regrettably, it will be the consumer who pays for the VFD failing due to chemical exposure.

Site crafting | SIMPELLER DESIGNS