Common Mistakes When Installing Electromagnetic Locks

Why Proper Installation Matters

Electromagnetic locks may seem straightforward to fit and operate, but our Technical Support team regularly receives calls, chats, and emails from installers needing guidance. While the basic operation of a maglock is simple, there are a number of key tips and best practices that ensure a smooth and secure installation.

Installing the Wrong Lock in the Wrong Place

The first step to a successful installation is assessing the environment. The location will influence the type, strength, and configuration of the electromagnetic lock you need. A frequent mistake is selecting a lock with insufficient holding force or installing it inappropriately for the door’s purpose.

Installing Electromagnetic Locks on Internal Doors

When securing interior doors, consider the area being protected:

  • Standard internal use: For doors that only need to remain closed and control routine access, a 300kg electromagnetic lock is typically sufficient.
  • High-security areas: For zones protecting valuables or sensitive information, a stronger solution is recommended. 500kg locks, double maglocks, or magnetic architectural handles with multiple magnets along the door’s height help reduce the risk of forced entry and door flexing.

Distributing magnetic holding force across the door makes it far more resistant to brute force attacks.

Installing Electromagnetic Locks on External Doors

External doors require extra attention:

  • Door only needs to stay closed: If a lock’s purpose is merely to keep a door shut while the building is occupied, 300kg may be adequate, provided a mechanical lock secures the door when unoccupied.
  • Primary security device: If the electromagnetic lock is the main or only security measure, 500kg should be considered the minimum holding force. Underestimating the force needed is a common cause of compromised security.

Avoid Misusing Pull-Force Locks as Shearlocks

Electromagnetic locks generate a strong perpendicular (pull) force between the magnet and the armature plate. A common error occurs when installers mount a maglock in a way that subjects it to shear force (sliding along the surface).

For example, a 300kg maglock provides 300kg of pull force, but not 300kg of resistance to sideways force. Incorrect installation like this can create a serious security vulnerability.

If the magnet must be mounted vertically (downward from a frame or upward from the floor), a shearlock should be used instead. Shearlocks combine magnetic pull with a mechanical pin to resist sideways force safely.

Regular Maintenance Is Essential

Electromagnetic locks are durable, but they are not maintenance-free. Even high-quality maglocks with extended warranties require basic upkeep:

  • Keep surfaces clean: Dust and small metallic particles can accumulate on the magnet and armature plate, especially in industrial environments. Regularly wiping the lock helps maintain optimal performance.
  • Check for loose fixings: Small vibrations over time can loosen screws or bolts, so routine inspections are recommended.

Tips to Ensure a Smooth Installation

  1. Use security ropes: These short steel cables help keep the magnet in place during installation, preventing it from shifting or falling. They also reduce the risk of injury from heavy components.
  2. Apply Threadlock: Threadlock glue secures screws and bolts in place, preventing gradual loosening over time. It sets in under 10 minutes and fills gaps up to 0.25mm. Avoid substitutes like Studlock, which can make screws impossible to remove later.

Key Takeaways

Many of the most common installation mistakes are easy to avoid with proper planning and attention to detail. Choosing the right lock for the door type, understanding pull vs. shear force, and maintaining the hardware regularly will ensure long-term performance and security.

Every installer’s journey to expertise involves learning from experience, and having support available can make a significant difference.

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