Zanussi ZHT 610 Instruction Booklet page 6

Before carrying out any maintenance or
cleaning isolate the cooker hood from the
mains supply.
The cooker hood must be kept clean, a
build up of grease or fat can be a fire hazard.
Always wear protective gloves when
cleaning the hood.
Never use scouring pads or abrasive
cleaners.
Never use excessive amounts of water
when cleaning particularly around the
control panel.