Safety Reversal Testing: A Complete Guide for Homeowners
2024-01-15 6 min read
Your garage door is the largest moving object in your home, weighing anywhere from 150 to 400 pounds depending on its size and materials. With something this heavy moving up and down multiple times a day, safety features aren't just nice to have.they're absolutely essential for protecting your family.
Understanding the Safety Reversal System
Since 1993, federal law has required all garage door openers sold in the United States to include an automatic reversal system. This life-saving feature causes the door to immediately reverse direction if it encounters an obstruction while closing. There are two primary components to this safety system: the mechanical auto-reverse and the photoelectric sensors.
The Mechanical Auto-Reverse
The mechanical auto-reverse is built into the opener itself. When the door encounters resistance while closing.whether from a person, pet, bicycle, or any other object.the opener senses the increased force and immediately reverses the door's direction. This feature relies on proper force adjustment settings within the opener.
Photoelectric Safety Sensors
Also known as "photo eyes," these sensors are mounted near the floor on either side of the garage door opening. They create an invisible beam across the doorway. If anything breaks this beam while the door is closing, the door automatically reverses. These sensors are your first line of defense, stopping the door before it ever makes contact with an obstruction.
How to Test Your Safety Features
Testing your garage door's safety features should be part of your regular home maintenance routine. We recommend performing these tests monthly. Here's how:
Testing the Photo Eye Sensors
1. Open your garage door completely 2. Place an object (like a cardboard box) in the door's path, breaking the sensor beam 3. Press your remote or wall button to close the door 4. The door should immediately reverse upon detecting the obstruction 5. If the door doesn't reverse, do not use it until the sensors are repaired
Testing the Mechanical Auto-Reverse
1. Open your garage door completely 2. Place a 2x4 piece of lumber flat on the ground in the center of the door opening 3. Close the door using your remote or wall button 4. When the door contacts the 2x4, it should immediately reverse 5. If the door doesn't reverse or reverses too slowly, the force settings need adjustment
What to Do If Tests Fail
If your garage door fails either of these safety tests, stop using the automatic opener immediately. You can still operate the door manually by disengaging the opener (usually by pulling a red emergency release cord). However, you should call a professional technician as soon as possible to diagnose and repair the issue.
Common causes of safety system failures include misaligned sensors, dirty sensor lenses, damaged wiring, or improper force adjustment settings. While some issues like dirty lenses can be cleaned by homeowners, most repairs should be handled by trained professionals to ensure proper operation.
The Importance of Regular Testing
Many homeowners install their garage door opener and never think about the safety features again. Unfortunately, these systems can fail gradually over time due to vibration, temperature changes, or simple wear and tear. Regular testing catches these issues before they become dangerous.
At Garner Garage Doors, we include comprehensive safety testing as part of every service call. If you're unsure about your door's safety systems or if your tests reveal any problems, don't hesitate to contact us. Your family's safety is worth the peace of mind.