A powerful 500W motor and choice of blades, beaters and balloon whisk make the Dualit hand blender a perfect choice for smaller kitchen tasks. Now in practical new high gloss finish
The attachment you are using may not be securely attached. Remove and re-attach, ensuring it is locked in place.
The Dualit Hand blender is designed for intermittent use; you may have used it for over a minute. Allow it to cool and try to use it for shorter periods of time.
The food chunks may be too large; try chopping into smaller chunks. You may also need to adjust the speed selection.