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The suction effect is
weak.
Is the pressure loss excessive (> 2000 Pa)?
YES
Is the filter cleaning
system operating?
YES
Replace the
filters.
NO
Contact the
manufacturer.
NO
Does the motor rotate in
the right direction?
YES
Make sure that any sliding
traps in the channel system
are open and that there are
no obstructions in the
channel system.
NO
Contact a
professional
electrician.
