A rotary-vane vacuum pump with energy-saving features
The EcoDrive series of rotary-vane vacuum pumps features an adjustable gas-ballast valve, a forced oil-circulation system and an anti-suckback design. The series’ signature model, the ED16 (photo), delivers a 16 m3/h flowrate and an ultimate vacuum down to 4 × 10–3 mbar. A key feature for the EcoDrive series is the application of a high-efficiency brushless d.c. (BLDC) motor and control. In addition to its higher efficiency compared to conventional a.c. motors, BLDC is an inverter-driven d.c. motor, which can run at variable speeds. Also, its Eco Mode significantly reduces speed, thus conserving energy while maintaining vacuum level. When the Eco Mode is activated on an ED16, the motor speed will be reduced by one third, therefore reducing power consumption. — NAVAC Vacuum, Lyndhurst, N.J.