R5906848 /04 DP2K SLP Series288
23.4 Washing and drying the dust filters
About filter washing and drying
For environments where popcorn grease and such can contaminate the filters, Barco advises the client to
purchase one extra set of filters to cover drying time, as well as taking following extra precautions and
instructions pertaining to filter cleaning and drying.
Cleansing agent
To clean sticky, greasy dust filters we suggest usage of Sodium carbonate crystals (Na
2
CO
3
). Sodium
carbonate (Often called washing soda, soda crystals, or sal soda in the detergent section of stores) is
widely used to effectively remove oil, grease, alcohol stains … The product itself is relatively safe, sodium
carbonate is used in toothpastes and as a food additive (E500). Potential Hazards are described in the section
“Hazards”, page 396.
Image 23-5: Sodium carbonate crystals.
This cleaning procedure assumes that the filters are already removed from their slots.
Take into account that the time needed to dry the dust filters may be 24 hours or more. For that, it's
recommended to have a second set of dust filters which can be used while cleaning the first set.
Required tools
• Bucket with hot water.
• Sodium carbonate, 30 gram (handful) per liter hot water.
How to wash and dry the dust filters?
1. Make a solution with a ratio of 30 gram (a handful) sodium carbonate to 1 liter hot water.
2. Soak the dust filters in the solution for 30 to 60 minutes. The grease should be dissolved after 1 hour.
3. If the dust filter is still clogged repeat this procedure from step 1.
4. Rinse the dust filters with clean water to flush all grease residue away.
5. Shake out all excess liquid by repeatedly swinging the filter to-and-fro in a centrifugal action.
6. Then allow the filters to dry thoroughly.
Note: Drying time of the dust filters can be up to 24h or more. Drying time can be shorter when being
done in a well-ventilated area.
Tip: To speed-up drying, allow the filter(s) to dry at 50°C max in a well ventilated room.
Dust Filters
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