102 Maintenance
Replacing the air filters (IP54 / UL Type 12)
Check the air filters and replace if necessary (see page 127 for the correct filter types).
Inlet (door) filters (IP54 / UL Type 12)
1. Remove the fasteners at the top of the grating.
2. Lift the grating and pull it away from the door.
3. Remove the air filter mat.
4. Place the new filter mat in the grating the metal wire side facing the door.
5. Reinstall the grating in reverse order.
Outlet (roof) filters (IP54 / UL Type 12)
1. Remove the front and back gratings of the fan cubicle by lifting them upwards
2. Remove the air filter mat.
3. Place the new filter mat in the grating.
4. Reinstall the grating in reverse order.