[Roller shutter] Fast repair for a broken spring
Roller shutters are easy and quick to use, so they show up in many places, especially shops, industry, and garages. With age, the spring can break. When that happens, first cut the power, then find the cause and repair or replace it. If you have no repair experience, call +86 18938501256 (ruihua@rhidoor.com), RHidoor’s repair department. This spring is a standard hardware part, easy to source, but pick the right spec so it fits and works. The spring is a key part of the shutter. It stores energy and cushions big shocks during travel, keeping things stable and extending the unit’s life.
How to replace a broken roller shutter spring:
1. To fit a torsion spring, grab the spring shell firmly with both hands, facing you (from the front), pulling up. Keep a firm grip.
2. With the left hand gripping, use a wrench with the right to loosen the screw fixed to the door body. After removal, both hands slowly release the spring until it has no resistance. Repeat for each.
3. Then remove the screws on both sides of the manual beam, take it down to the floor, remove the manual shutter spring screw, fit the new spring the same way as the old one, fix the screws, and reassemble the beam as before.
4. Now tighten the spring, the key step (basically the reverse of how you took it off). Tighten to the ideal resistance, then secure the screw. Done.
5. For a steel-strip spring, first grab the torsion spring shell facing you (from the front), pulling up firmly. With the left hand gripping, remove the hook plate with the right (if the manual shutter spring is broken, just take the hook off).
6. Then pull the spring down and off. The steel strip should be at least 80 cm longer than the door body, ideally. Remove the old screws, fit the new manual shutter spring, tighten to best resistance, then hook the plate back.
7. In fact, steel-strip and torsion springs work on the same principle. A note on replacing: if a user suddenly cannot pull the shutter up, the safest plan is to call a technician for on-site repair to avoid needless loss. Do not get clever if you do not know how, or you risk your own safety. The spring force is large; even a technician can get hurt.