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Alutech Garage Door Opener IB/95-17 Operation manual (3 pages)
4. Make sure that the safety brake is duly protected from excessive harsh conditions such as dust, water, etc.5. If there is a chain transmission in the rolling system, it is necessary to ensure that the chain is not loose. Insufficient chain tension causes sharp accelerations that can trigger the safety brake to block.5.REINSTANTEMENTInertia safety brakes, …
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