Security Door Lock Care: Quick Troubleshooting Guide
Problem: If your security door lock feels stiff, sticky, or difficult to open, it usually needs a little lubrication. Follow the simple steps below to help your lock move smoothly again.
Important: Use silicone spray only.
Do not use WD-40 or oil-based products. These can leave a sticky residue that attracts dirt and may jam the lock over time. Silicone spray helps repel water, reduce friction, and protect the moving parts. Regular lubrication helps extend the life of your lock and keeps your door easy to use.
- Open the security door and locate the silver lock tongue on the side of the door. If your door has a triple lock, there will also be tongues near the top and bottom.
- Press the small round nib above the centre tongue to extend the lock tongue/s.
- Wipe the tongue/s with a clean cloth to remove dust and debris.
- Apply silicone spray to the tongue/s and the internal snib that operates the lock.
- Check that the strike plate and cavity are clean and free from debris.
Your lock should now move more freely. Repeat these steps whenever the lock starts to feel stiff or difficult to operate.
One suitable option is Boston Silicone Spray.
Problem: If your security door lock works with the inside snib but not the key, or the key but not the snib, the lock needs to be reset.
How to reset the lock:
Open the door and remove the screw holding the cylinder in place. This is usually the third screw from the bottom and lines up with the centre of the cylinder.
Do not remove the cylinder. Press the small nib above the lock tongue, make sure the cylinder is centred, then lock the door with the key. Refit the screw to secure the cylinder.
If the lock still does not operate smoothly after lubrication or resetting, please contact us for assistance.