· by Michael Blair, Nashville's Garage Door
Middle Tennessee storms take the power down often enough that the manual release on a garage door opener gets used. The release disconnects the door from the opener carriage so the door can be lifted by hand. Whether it can be lifted safely depends entirely on the springs, and the release cord is also the thing most likely to be misused when the power comes back.
Using the release
The red cord hangs from the trolley on the opener rail. With the door fully closed, pull it straight down or slightly back toward the motor; a lever on the trolley disengages and the door is free. Lift the door by the handle or the bottom section, never by the panels or the rollers, and it should rise with moderate effort and stay wherever you leave it.
That last part is the test. A correctly sprung door is balanced so that its weight is almost entirely carried by the springs, and it will hold at half height without help. If it slams down, or takes all your strength to lift, or shoots up on its own, the springs are wrong or broken and the door is not safe to operate by hand.
When not to pull it
Never release the door while it is open. With the opener disengaged, a door with a broken spring or a weak one drops under its own weight, and a double door can weigh several hundred pounds. If the door is stuck open when the power fails, leave it, or have someone hold it while the release is pulled and it is lowered carefully.
If a spring is visibly broken, with a gap in the torsion spring above the door or a stretched extension spring hanging loose, do not attempt to lift the door at all. The opener may have been the only thing holding it up. That is a service call, and it is the reason the door was probably straining before the power went out.
- Release only with the door closed
- Lift by the handle, with a straight back
- A door that will not stay half open has a spring problem
- A broken spring means do not lift; call for service
Re-engaging the opener
When power returns, the door has to be reconnected to the trolley. On most openers, pull the cord toward the door to reset the lever, then either run the opener so the trolley travels along the rail until it clicks into the carriage, or slide the door by hand until the carriage engages. Some models reconnect automatically on the next cycle.
A door left disengaged is a security problem, because it can be lifted from outside, and an opener run repeatedly against a disengaged door can damage the trolley. If the door does not reconnect after a cycle or two, stop and check the lever position rather than running it again.
Battery backup, and why newer openers have it
Openers sold with a backup battery run the door a number of times on the battery after the power fails, which removes the whole question for the length of an ordinary outage. The battery is a wear item with a life of a few years, and the opener usually signals when it needs replacing; a backup that has not been tested is not a backup.
For a house where the garage is the main entrance, or where someone cannot safely lift a door by hand, a battery backup opener is the sensible replacement when the current one is due. Until then, know where the release cord is, and try it once on a calm afternoon rather than the first time in a storm.