PAGE 4 OF 4

Step 13. On openers with a drive screw instead of a chain, lubricate the entire length of the screw with lightweight oil. Do not use grease.

Step 14. Test the door’s closing force sensitivity and make adjustments at the opener’s motor case if needed. Because both the sensitivity and the adjustment mechanism vary greatly between opener models, you’ll have to rely on your owner’s manual for guidance. If you don’t have the owner’s manual, you can usually download one from the manufacturer’s website.

Step 15. Check for proper alignment on the safety sensors near the floor. They should be pointing directly at one another and their lenses should be dean of any dirt and grease.

Step 16. Make sure that the sensors are talking to the opener properly Start to close the door, then put your hand down between the two sensors. If the door stops immediately and reverses direction, it’s working properly. If it’s not, make the adjustment recommended in the owner’s manual. If that doesn’t do the trick, call a professional door installer and don’t use the door until it passes this test.