32 SmartFan EN
7.2.2 Fan unit maintenance
Step 1: Pull the inside cover
out of the mounting tube.
Step 2: Unplug the fan (1)
Pull the fan unit out of the
mounting tube using the
strap (2), taking care that the
power / control cable is not
damaged.
Step 3: Using a brush and
a vacuum cleaner, clean
the fan grille and the rotor
blades.
Step 4 : Reinsert the cleaned
fan unit into the mounting
tube. Pay attention to the
power cable. Plug in the fan
(1). Push the fan unit down
into the mounting tube until
the spacers touch the heat
exchanger (2).
Step 5: Reinsert the inside
cover (with the air intake
pointing upwards) into the
mounting tube.
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