Torsion springs
Carry the door's weight. A broken spring makes the door extremely heavy and unsafe to operate manually.
Overhead doors & docks
Sectional Doors and Dock Levellers
Sectional doors save side room and insulate well — but their springs and cables are the components most likely to end a working day early.
Sectional overhead doors run on horizontal tracks under the roof, which keeps the opening clear and allows insulated panels to seal the building envelope. They are widely used on loading bays, workshops and warehouse openings.
Access Opening Solutions installs, services and repairs sectional doors and dock levellers in Dublin, including the spring, cable and track components that carry the door's weight.
Sectional door components and common faults
Cables and drums
Frayed or jumped cables cause the door to hang unevenly and jam in the tracks.
Panels and hinges
Impact damage to a lower panel is common; individual panels can often be replaced.
Tracks and rollers
Bent tracks and worn rollers cause binding, noise and eventual derailment.
Operators and safety gear
Motor units, safety brakes, photocells and manual release equipment.
Warning signs worth acting on
- The door feels much heavier than usual, or slams the last section closed
- A loud bang from the door area, followed by the door refusing to lift — usually a spring failure
- The door hangs crooked or one side lags behind the other
- Grinding or rattling from the tracks and rollers
- The leveller lip sticks, or the platform will not sit level with the trailer bed
Dock leveller servicing
- Hydraulic power pack, hoses and cylinders inspected for leaks and pressure loss
- Lip operation and hinge condition checked under load conditions
- Safety legs, maintenance struts and controls function-tested
- Deck welds, wear plates and pit condition inspected
- Controls and any door interlocks proven before handback
Safety points our engineers insist on
- Never attempt to adjust or release torsion springs without the correct tools and training
- Do not operate a sectional door with a broken cable or visibly slack cable on one side
- Take a leveller out of service if it creeps under load
- Use the maintenance strut whenever anyone needs to work in the pit
Questions we are asked
Sectional Doors & Dock Levellers — FAQs
Our sectional door will not lift and made a loud bang. What happened?
That combination almost always indicates a broken torsion spring. Do not attempt to lift the door manually — it is carrying its full weight.
Can one damaged panel be replaced?
Usually yes, provided the panel profile is still available and the rest of the door is sound.
How often should a dock leveller be serviced?
For busy bays, at least twice a year, with hydraulics and safety legs checked at each visit. Frequency should rise with usage.
Do you cover both the door and the leveller on one visit?
Yes, and covering the full bay on one visit is usually the most efficient approach.
24/7 Emergency Response
Sectional door or leveller fault?
Describe the symptom and we will tell you whether the equipment should be taken out of use before we arrive.
Call 01 877 5206Request an Emergency Call-Out
Or email info@accessopeningsolutions.com with photographs of the shutter and its location.