As above. Mine just arrived, seems pretty solid for the price. After a second or two or running though it starts to develop a bit of a droning noise (separate to motor noise), is that normal?
Do you mean the Heavy Duty Chip and Dust Collector - 550 Watt - DK7108 or the High Filtration Dust Collector - 50 Litre - DK7109? They have different types of motor, so it'll help to know which one it is.