Scroll vacuum pumps consist of both a fixed and an orbiting scroll. As the orbiting scroll movements, voids are created at the inlet of the pump, drawing in the gas. As the 
rotor additional moves, the gas is steadily compressed until it really is Scroll Vacuum Pump discharged to atmosphere at the pump exhaust.
The scroll pump design provides 100% oil-free operation as it will not require any lubrication. The bearings are separated from the compression chamber so no contamination of the pumped gas is possible. In addition, the leak-tight design helps prevent contamination of the pumped gas by ambient air flow. Maintenance is bound to changing the scroll suggestion seals which can be easily carried out by the operator and with no need for special tools.