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Garage door openers are rugged devices that are expected
to do many years of hard labor. An opener has both
mechanical and electrical parts that could use a little
maintenance and care. Always be sure the power is off to
an opener before making any adjustments.
Speaking of electricity, the first thing to check if
an opener doesn't work is the
power supply. Is it plugged in? Are electrical wires loose
or disconnected? Lots of household fix-its are just that
easy. |
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 Eliminate a
sagging chain by adjusting the chain tension. If the chain
sags more than 1/2 inch below the rail, it may bang
against the rail and cause undue wear on the drive
sprocket. Tighten the chain until it rests 1/2 inch above
the base of the rail, but be careful not to overtighten. |
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 A door that
fails to open fully can be fixed by adjusting the limit
screws. Unplug the opener and locate the up-limit
adjustment screw on the power unit. Turn the screw
clockwise. Plug in the opener, run it through a cycle, and
see if you need to adjust it more. |
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 Safety
reversing sensors are those two little light-beam devices
near the bottom of the door. If something breaks the beam
while the door is closing, the sensor reverses the door.
Sometimes, the beams can get out of alignment. Make sure
the sensors face each other across the garage door opening
in order to function properly. |
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 Clean and
lubricate the drive chain and track of the automatic door
opener once or twice a year. Use a light penetrating oil
instead of grease to keep from collecting dirt and grit. |
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RELATED PROJECTS
Adjusting an
Out-of-Balance Door
Roll-Up Door Maintenance
Tips |
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