Broken Shutter Guide
The steel roller shutter was sticking and occasionally jamming when the shutter was opening or closing. Our technician opened up the metal casing where the mechanism was located and discovered the broken plastic runner was the cause of it all.
The roller shutter is operating without one but a new runner would need to be replaced soon. This is a very old roller shutter. Parts are not easy to come by as there was no operating manual or record of any parts number.