Are you curious of the answer to this question yourself? Well here at EZhawk we Recommend 2-3 times a year. It is also worth mentioning that it is equally important to keep your hardware clean. If you notice build up of things like dust, dirt, mud, or thick grease around your tracks, hinges or rollers it should be cleaned accordingly and lubricated after.
Does this sound like your problem? 8 out of 10 times if you push the button and your door begins to go down then comes back up it is your safety sensors. It should be accompanied by your opener flashing or making an analog clicking sound. Now, here is the solution. 1. Find your sensors. they should be located on your track. 2. Make sure they have power. You should have 2 different colors (typically, green and orange) if at least one has light you have power. 3 If you have power make the necessary adjustments to ensure they are pointing at each other. This should solve your problem, if your sensors do not have power call EZhawk Garage Door to have a trained professional assist you.