Using an electric roller shutter, you will hit the awkward moment of a blackout now and then. If you knew how to pick one and the maker taught you how to use it, opening it in a blackout is easy. So RHidoor first tells you how to pick:
- Does it support manual? Manual should be easy and quick. In a blackout, turn the clutch 90 degrees and push it open by hand.
- It should not coast by inertia; it needs a two-sided auto-lock.
- To smooth the run and add pull, we use 8-wheel front-and-back drive with linked-gear tech.
- Check if the build is precise and well lubed. A good shutter dissipates heat well, uses all-gear drive with no chain and no belt, which extends the motor core life.
- Use a mechanical external sensor to open or close from outside.
- Use a dual-mode motor with a torsion spring, switchable, manual in a blackout.
- Use a DC battery motor with an external battery.
While picking a good shutter to avoid blackouts, also do these three ahead:
a. At install, fit an uninterruptible supply like a backup battery.
b. When buying, pick a shutter with manual function, just in case.
c. If you happen to be inside during a blackout, use the supplied chain to pull the shutter up.
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