I have bought a second-hand roller shutter door, it is a galvanised, industrial door. The problem is that there is no tension in the spring in the roller.
Does anyone know the correct procedure for re-tensioning the spring?
There is a hole drilled through the shaft so the spring can be tensioned and locked into position.
Does anyone know the correct procedure for re-tensioning the spring?
There is a hole drilled through the shaft so the spring can be tensioned and locked into position.
