While generally easy to install, without an Introduction or Basic Principles of Operation as a preamble, you will likely have the same issues I did. Read on for the lessons I learned and tips that will save your hair. I will explain each of the major elements of the system and provide suggestions to improve your probability of a successful installation.
Because it was a Saturday and I knew the garage door company I usually use wasn't open week-ends. I decided to look on the internet for week-end workers. The first site that came up was Precision Overhead Garage. Their website said if you call before noon, you can get an appointment that day. Even though it was 1pm, I decided to call anyway. After explaining that I couldn't close or open my garage door, they told me they would go ahead and schedule a time that day...even though it was after their same-day service cut off time of noon. They told me the technician would arrive between 3pm-5pm and he would call before coming (that was nice because I was able to run errands locally and not have to wait at home for those 2 hours). I also have to mention that although the company used an answering service to take the call and schedule the appointment, the gentleman that helped me was also very professional and courteous. Derrick, the technician that was assigned to the repair, called to tell me he was on his way. It was also within the arrival timeframe the company had promised. When he got to my house, he was polite and professional. He assessed the problem and made sure that I was clear about the cost of the repair and the cost of the service call. I agreed and he immediately went to work. He never tried to sell me any other services or parts or repairs that weren't needed. He was finished within 45 minutes and the door worked perfectly. I was able to pay with a credit card even without them being able to verify the information because it was a week-end. I was very impressed that they did that, especially because I was a new customer and had no history with them. Obviously, by my 5-star rating, I would recommend them to anyone who is looking for a professional garage door company. Thank you to Derrick and Precision Overhead Garage Door Service!!
Now check the springs. There will be just one on a single-car garage, two on a two-car garage. Roll-up doors are operated by torsion springs, controlled by cables on pulleys. Two-car models can be adjusted by pulling the cable further through the plate above the door, then knotting the end to hold the newly established tension. One-car roll-up door springs should only be adjusted by a professional, as there is such a great amount of tension on the one spring that you could be injured when trying to adjust it yourself. Swing-up door springs are hooked on each side of the door into special notches or holes. To adjust the tension on these springs, simply move the spring hooks to the next notch.
"We had an unusual repair requirement. We have horizontal sliding steel doors on our 1950's equipment shed. The upper track was damaged by a roofer's forklift while they were loading supplies onto the roof. The track is made out of very heavy steel, not like the track in today's doors. Toby, responded to my request very quickly and came out of his way to inspect the damage. Although it was not something that he had encountered before, he was able to fix the track and the door is operating better than it has in years. Thank you."
I'm not a professional, but I watched as my garage doors were serviced last year. The tech used a spray lubricant (I had bought a different brand in the garage door section of a home improvement store). He sprayed the inside of the entire track, top and bottom, the rollers that ride along the track, and all hinges on the door. He sprayed each hinge twice -- once on each side. The techs were more generous with the lubricant than I was when I'd done it before, so don't be afraid to give it a good squirt.