1- When the piston is in the low part, the suction vane opens admitting the evaporator refrigerant;
2- When the piston is in the high position, the suction vane closes to prevent refrigerant from returning to the evaporator and the compression vane opens releasing refrigerant to the condenser.
Every mechanical assembly of the compressor is suspended by three springs, giving the compressor very low noise levels during its operation.