Maintaining your M&C cylinders: lifespan & prevention
Maximize the lifespan of your security. Discover how to prevent malfunctions, what intervals to follow, and when overhauling or replacing your M&C cylinders is necessary.
The importance of periodic checks
✓ Preservation: Protects the complex internal mechanism from corrosion and wear.
✓ Operational reliability: Prevents keys from breaking or you from finding yourself in front of a closed door.
✓ Certification: Keep your SKG 3* security in top condition according to PKVW standards.
Professional Service Step-by-Step Plan
- Inspection: Check for visible damage or play in the security fitting.
- Cleaning: Remove dust from the cylinder core with compressed air (no liquids!).
- Lubricate: Use only the M&C Service Pen or dry PTFE spray.
- Activate: Move the key several times to distribute the agent over the locking pins.
- Follow-up check: Wipe off any excess residue from the key with a dry cloth.
How often is maintenance required?
| Context | Frequency: |
|---|---|
| Interior doors | 1x every 12 months |
| Exterior doors (House) | 1x every 6 months |
| Coastal areas or industry | 1x every 3 months |
When is replacement smart?
Maintenance helps a lot, but after 10-15 years or in case of mechanical damage, replacement is safer.
Frequently asked questions about cylinder maintenance
Which spray is specifically suitable for M&C?
Use only a dry PTFE/Teflon- of graphite Cylinder spray. These products don't leave a greasy film. Avoid standard oil-based products and WD-40, as they can encapsulate dirt over time.
Why is WD-40 harmful to my lock?
WD-40 is a penetrating oil that leaves a grease residue. This grease attracts dust and sand. In the fine mechanics of an M&C cylinder, this creates an abrasive effect, leading to accelerated wear and ultimately blockages.
How do I know when my cylinder needs maintenance?
When the key no longer slides smoothly into the keyhole, or when turning the keyway encounters more resistance than usual, it's time for maintenance. Don't wait until the key seizes up or breaks.
Does the environment influence the maintenance frequency?
Yes, in coastal areas (salty air) or near heavy industry/construction sites (particulate matter), we recommend maintenance every three months. In a clean indoor environment, once or twice a year is sufficient.
What should I do if my key keeps sticking?
First, thoroughly clean the key itself with a dry cloth. Then, apply a short puff of cylinder spray to the keyway. If the problem persists, the cylinder is likely internally damaged or worn, and replacement is the only safe option.
