This manual provided the necessary information to properly use the C-3 deck. The manual was an excellent reproduction and very clear.
Text excerpt from page 7 (click to view)
The charcoal filter cannot be cleaned. The filter should be replaced at least every three months or more frequently if the hood is used more than three hours per day.
To Remove/Replace the Charcoal Filter
1. 2. Remove the metal inlet grille. Carefully turn the disk (C) anti-clockwise and remove the the charcoal filter (B) from the motor support (A) as illustrated opposite. Clean the metal inlet grille and motor support before replacing the charcoal filter. Place the new charcoal filter (B) over the motor support (A), and while holding the filter securely insert the disk (C) and turn clockwise.
Changing the Light Bulb
If a lamp fails to function check that the bulb is screwed into the holder. If bulb failure has occurred then it should be replaced with a 220-240V 40W clear cylindrical shape bulb with a small E14 screw thread. Charcoal filters, grease filters and light bulbs can be obtained from your local Service Force Centre This appliance can be a fire hazard if the grease and charcoal filters are not cleaned and replaced as recommended.