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Is connected and properly aligned.
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From informational videos to product manuals and troubleshooting articles the chamberlain group resource library has the information you need.
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This garage door opener has been designed and tested to offer safe service provided it is installed operated maintained and tested in strict accordance with the instructions and warnings contained in this manual.
If you have an old chamberlain opener you might even consider replacing it with one that has all of the modern safety features.
The model number label is located on the left side panel of your opener.