Inner filters
The inner filters are the second filter stage.
• Lift off the top cover to get access to the filter drawers (below the fans)
• Push the drawers a to swivel out the filter holders
• Pop out the sandwich filters
• For each filter, place a new filter pad between the metal grids b and remount it in its holder
• Push the drawers back into position c
• Close the housing again
a
b
c
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