Crushing hazard ▲ When slide back there is a risk of trap of fingers. Only carry out step 1 and 2 in case of complete dismantling of the supporting frame (dismantling for maintenance). If the supporting frame was only pulled out for cleaning, begin installation at step 3. 1. Use two people to carefully slide the supporting frame into the housing until the supporting frame rests again on the telescopic rails. Ensure that the telescopic rails slide in correctly. 2. Latch the stop pin. 3. Slide the supporting frame slowly completely into the housing. Turn the drive roller (3) so that the coupling (2) of the drive roller locks into the coupling of the worm drive gear. 4. Pull down the two hangar brackets and tighten the knurled knobs (1). 5. Close the front door and upper cover.