| If the shear lock does not activate when the door is closed |
- The magnet assembly is too far away from the armature assembly
- Adjust the distance between the magnet and armature assembly by adding more shims under the back portion of the armature assembly
- Re-adjust the position of the armature assembly or the magnet assembly
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| Poor attraction between the magnet assembly and the armature assembly |
- Check the power supply, and make sure it is according to specifications
- If the power supply is adequate, replace the unit.
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| If the magnet assembly pulls the armature assembly, but the door can still be opened |
- Check to make sure the locking bolts are in the armature assembly’s keeper hole when the unit is activated
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| If the door can be kicked in or pushed in with your shoulder |
- Check to make sure the magnet assembly and armature assembly surfaces are clean and free from dirt
- Even a little dirt could reduce the attraction between the two surfaces.
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| For any other problems |
- Test again
- Replace the unit
- The problem unit can also be substituted for a working unit in another door frame to see if it works there
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