134 Maintenance Cleaning the door air inlets (IP54)1. Stop the drive and do the steps in section Electrical safety precautions (page 16)before you start the work.2. Remove the fasteners at the top of the grating.3. Lift the grating and pull it away from the door.4. Remove the air filter mat.5. Place the new filter mat in the grating the metal wire side facing the door.6. Reinstall the grating in reverse order. Cleaning the outlet (roof) filters (IP54)The outlet (roof) filters in IP54 drives can be accessed by pulling the gratings upwards. Replacing the outlet (roof) filters (IP54)1. Stop the drive and do the steps in section Electrical safety precautions (page 16)before you start the work.2. Remove the front and back gratings of the fan by lifting them upwards.3. Remove the air filter mat.4. Place the new filter mat in the grating.5. Reinstall the grating in reverse order.233456