The magnet is running very warm, almost hot'Power to Lock' devices such as magnetic locks can run warm as they require constant power to them, however, the most common causes of this are the magnet is 12v dc operation, but the power supply is 24v dc
Electrical resistance in the circuitry will create heat but if the power supply is providing insufficient amperage then the magnet will feel hot
Also, if there is a current drop because of a long cable run with an inadequate wire gauge, the magnet will not get sufficient current and will run hot
The armature plate is vibratingThis is due to either a faulty or under rated power supply, or the magnet is 24v dc operation and the power supply is 12v dc
The magnet does not lock, the door can be pulled open quite easilyThe most common cause is incorrect alignment of the armature plate to the magnetic lock, a faulty or under rated power supply, or the magnet is 24v dc operation and the power supply is 12v dc
Armature plate alignment 
Tech TipsThis magnetic lock will operate via 12v dc or 24v dc, however, please ensure you check the wiring connections correctly for use with a 12v dc power supply or 24v power supply before you turn the power on
If you fail to check this, then you run the risk of either the magnetic lock running very hot or it not locking correctly
Eventually you will cause damage to the system you have installed
Periodically clean the surface of both the magnet and armature plate with light oil
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