Scroll vacuum pumps consist of both a fixed and an orbiting scroll. As the orbiting scroll moves, voids are manufactured at the inlet of the pump, drawing in the gas. As the rotor additional moves, the gas can be steadily compressed until it is discharged to Scroll Vacuum Pump atmosphere at the pump exhaust.
The scroll pump design provides 100% oil-free procedure as it will not require any lubrication. The bearings are separated from the compression chamber therefore no contamination of the pumped gas is possible. Furthermore, the leak-tight design aids in preventing contamination of the pumped gas by ambient atmosphere. Maintenance is limited to changing the scroll suggestion seals which can be easily performed by the 
operator and without the need for special tools.