Keep opener and door manuals
Model, installation date and service contacts belong in the property binder.
Record changes in operation
Unusual noise, jerking, damaged sections or repeated reversal deserve service review.
Do not adjust high-tension components
Springs and similar hardware can store dangerous energy.
Follow the manufacturer
Testing and service intervals should come from the actual door and opener instructions.
Safety boundary. This site is for planning, observation and records. Do not improvise electrical, fuel-burning, structural, roof-height or other hazardous work. Follow manufacturer instructions, applicable codes and qualified professional guidance.