Wiesenfield WIE-CCD-200 Manual De Instrucciones página 34

3) Install the right guide and the right side of the lower rail on the poultry house
using the self-tapping screws. Check that the door slides smoothly along the
guides.
TIP: If the door moves too heavily, check if the guides are not too tight.
Alternatively, a suitable lubricant can be used.