Maintenance

The air must be able to flow freely through the air duct.

There must be no deposits on the impeller blades (this can lead to imbalance and damage to the motor bearings).

Carry out the following inspection and maintenance work annually:

  1. Check all components for damage, e.g. the protective grille.
  2. Check the fastening screws of the motor, impeller and steel wall ring for tightness.
  3. Check that the ball bearings are running smoothly. To do this, turn the impeller slowly by hand.