VEVOR DB22 Bedienungsanleitung Seite 8

Attach the vent brush to an extension rod. Attach the extension rod to the
drill adapter.
STEP 7：Cleaning from the inside of the house
Feed the first rod through the Shop VAC adapter and connect the brush
and drill. Make sure the adapter is taped to the end of the vent. Complete
steps 7 and 8 as was done from the outside.
With the vacuum or blower running, begin to spin the brush and extension
rod into the vent.
Remember: Do not apply too much force or over torque the rods while
feeding them into the vent.
Ensure that the drill clutch is at half or lower. Connect one rod at a time as
needed to reach the opposite end of the vent. If you are unable to reach
the end with all of the extensions, cleaning may need to be completed from
the inside of the house towards the outside.
STEP 8：Removal of the extension rods and brush from the vent while still
spinning, slowly remove the rods from the vent. If there is enough room
and it can be done safely, all of the extensions can be removed at one time
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