GARAGE DOOR OPENER REPAIR: 455 AUTOMATIC DOORMAN.
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how do u adjust the chain if its a single tube model455 hamburg door there are no nuts just a single solid tube of which the chain is connect at both ends?
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how do u adjust the chain if its a single tube model hamburg door
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If your chain sags on these never tighten the chain without looking at the top bearing on the drive shaft. You should inspect it from underneath. What happens is when the bearing fails the driveshaft tilts forward causing the chain to sag. When the chain is tightened the radial force accelerates the bearing wear usually wrecking the driveshaft before it is noticed. I know. I sold and fixed hundreds of these years ago.
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I have an Automatic Doorman 455 and I need a new remote. Anyone know where I might find one? Or where I may find the model number (or whatever number is by/around the light)? I may have found a place to obtain one, but I need the number by the light.
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they're not rolling code.
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455 is a deathtrap safety dont work,get an allstar
mvp their the best
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I have an Automatic Doorman 455 that keeps burning out capacitors. The door repair, guy who installed it 15 years ago, has replace it 3 times (twice free) and says the relay may be going bad. He says he will keep the opener working as long as he can, because new ones aren't this good. Unfortunately, the company is out of business and he can't get parts. He thinks they might be available in Canada. Do you know a source for parts? Please reply by email; I might not find your video again.
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hi, another question for you. My garage door won't close completely and leave a 5 inches clearance from the ground. Is there a way to adjust for that with the doorman 455?
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Question for ya...my chain fell off of the "sprocket" how do I get it back on?
21Iso 3 years ago
The chain probably fell off because the tension nut that tightens the chain wasn't tightened enough, or an excessive force was put on the operator, causing it to fall off.
I will make a follow-up video explaining the chain-reinstallation and tightening process soon.
gamealarm 3 years ago