The maker tells you repair differs by type
Many think all roller shutters repair the same. They do not. Different types need different tricks and knowledge. Do not mix them up. The maker tells you how they differ.
Homes with garages usually have garage shutters, so repair is common and familiar. But many know nothing of shutter repair and must call the maker.
Manual roller shutter repair
a. Manual shutters still have a market. When the spring breaks or the spring link belt breaks, replace the spring sling.
b. Manual shutters often will not unlock or take the key. Just replace the lock.
c. If the shutter rolls up fine, the spring is likely fine; this is usually a deformed slat or a slat catch stuck in the guide. Repair the guide slot entrance.
Fire-rated roller shutter repair:
a. Check the power and fire control box; reset or replace if damaged.
b. If it will not open fully or close tight, re-set the travel switch, then check the door body.
c. If it runs one way, check the travel switch and wiring.
d. If the motor runs but the door does not, it is usually a slipped or stuck slat. Tighten hardware and adjust slat position.
e. If it reverses or opens when not closed tight, raise the load force.
High-speed roller shutter repair:
A high-speed shutter runs over 0.8 m/s, a fast lift barrier-free door. Its main trait is fast isolation to keep air dust-free. In repair, wire the forward/reverse and stop buttons in series, parallel the forward/reverse and start buttons and connect one end to the stop button; the other stop end connects to power. Run the shutter forward and reverse; the contactor’s normal-open auxiliary contacts parallel the matching start buttons.
Electric remote roller shutter repair:
This is fairly complex. The control system includes the button box, a CPU-based control board, the remote, and sensor-based detection circuits. It is specialized and technical, hard for most of us.
For electronic remote repair, use a pro. Know the model, cause, and symptom, then repair by the case for an accurate next step.
Some repair notes: the operator must not leave the post, and must watch the shutter’s open/close and execution. Never stand or walk under the door, in case the travel switch fails and causes an accident. Check if electric lines and devices are damaged; repair promptly to avoid trouble.