To calculate the standardised 8h daily exposure value, A(8), add your products and the hours of use, including breaks, maintenance, tank fillings etc.

Accumulated daily vibration exposure m/s² A(8)
A(8) < 2.5 m/s².
Daily vibration exposure below the Action Level. No need for further measures to reduce exposure.
A(8) = 2.5 - 5.0 m/s²
Daily vibration over Action Level. Increased risk for developing vibration related diseases for the operator. See Husqvarna recommendations and Directive 2002/44/EC for guidelines to reduce hazards from vibration exposure.
A(8) > 5.0 m/s²
Daily vibration exposure exceeds the Exposure Limit Value. Reduce daily work time and/or use machine with lower equivalent vibration level.