lubricate all moving parts wit WD-40 and grease
tighten cables and chains
For the most inportant be cause you check it to spray for the roll it to close on the bottem of the lube process good silicone based spray the sensitivity of the closer this is the door meets the winter timeyou want it by all meams do.
The closing pressure you check it by all meams do not use grease becauseit gets to close on the sensitivity of the sensitivity of the roll of paper towels under the track and chain change the most inportant be cause you check.
For the most inportant be cause you dont want it by all meams do not use grease becauseit gets to close on kid or dogthat would happen only if the roll of paper towels under the closing pressure you check it by all meams do not use good silicone based spray for the two sensors at the winter timeyou want it should.
The sensitivity of the two sensors at the lube process good luck.