Atlas Copco has introduced a range of pumps to provide an energy efficient solution for fluctuating vacuum demand applications. While a traditional fixed speed vacuum pump is either on or off, a VSD pump automatically adjusts its motor and element speed to the demand. As the VSD pump only runs at the required speed, significant savings in energy consumption are achieved.

Energy efficient acuum pumpsAtlas Copco’s VSD+ technology eliminates the peak current penalty during start-up commonly experienced with stop-start machines. The inlet control valve which provides modulating vacuum control in conjunction with the VSD also minimises energy consumption.

According to Willem Brits, representative for Vacuum Technique in South and Southern Africa, Atlas Copco’s vacuum engineers designed these energy efficient vacuum pumps to deliver peak performance at operating pressures commonly found in industrial applications. “Understanding how important low operating expenses and sustainable productivity are for customers and end-users, during the development of the GHS VSD+ series, Atlas Copco, took every single factor into consideration in order to determine where extra efficiencies and increased life span could be gained,” he says.

“Consumption of approximately 50% less energy than alternative technologies positions these vacuum pumps among the most energy-efficient oil-lubricated vacuum pumps on the market in the capacity range where some other technologies such as oil-sealed vane start to become mechanically inefficient and expensive in terms of capital expenditure. The built-in efficiencies of the GHS VSD+ series deliver sustainable productivity while the optimum and efficient performance of the vacuum pumps do not compromise on worker safety and comfort or the environment.”

High oil retention

The patented design of the vacuum pump ensures ultra-high oil retention (<3 mg/m3 even when under the greatest load) at all operating pressures – from ultimate pressure to atmospheric pressure. In conventional fixed speed vacuum pumps, overloaded oil separators lead to oil carryover. Managed performance means the vacuum pump never overloads the separators, extending life and reducing the environmental impact.

The oil retention ensures that the quality of the exhausted air is optimal and avoids oil spills on the factory floor, which commonly occurs with conventional oil-lubricated pumps. This ensures a significantly cleaner working environment and faster cycle times.

Plug and play

The GHS VSD+ series is based on the plug-and-play design principles of Atlas Copco compressors, ensuring easy and fast installation saving on time and space. The low maintenance design of the vacuum pump series offers low lifecycle costs for replacement pumps as well as new equipment.

“As replacement units, the end-user can generally expect a very short payback time of less than two years against existing oil-lubricated or dry vane installations,” Brits says. “This is considering power and maintenance costs alone, without taking into account the ease of installation. For new equipment, the lifecycle cost of the vacuum pump can be cut by around 50%.”

The vacuum pump is delivered as a complete package, and because of its fuse and cable size, provides reduced electrical installation costs. The footprint of the pump, no larger than that of a standard pallet, is one of the smallest on the market.

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