[Fire-rated roller shutter] Fault answers
A fire-rated roller shutter is an electric door among shutters that guards life and property in a fire. Faults can show up in use. Users may not know them. RHidoor, a maker that builds, installs, and repairs, answers them one by one.
Faults:
1. Noise when opening or closing: many think it is minor since the noise is weak. That view is wrong. First find where the noise comes from and why. It could be hardware, loose install, or a shifted curtain. Or no lube, so try some oil. If that fails, check the hardware; if still no, it is the shutter. Just re-align it so both sides are parallel. If noise stays, ask the maker’s repair tech.
2. Cannot open the shutter: one fault is the motor runs fine but the door will not open. Cause may be the shutter off the track on both sides, or a motor problem. Best to check the door or motor. If the shutter, replace it. If the motor, the issue is bigger; still best to go back to the original maker or a pro repair tech. Expertise matters.
3. Door will not close right: electric fire shutters not opening or closing fully is common. The shutter does not close right or open fully. Cause is wrong limit setting, or something blocking. If blocked, easy to fix: check and clear it. If the shutter itself, same as above: go to the original maker or a pro.