Manually Operating Access Control Doors

Card access locks are operated using electricity and will ‘fail safe’ when the power isn’t there. This means that they will not work in their usual way but can be manually operated. You should never be in the situation where you are stuck in a room/ corridor.

There are two types of systems;

  1. A green box on the wall on the inside of the door, if the breakglass within the box is pressed in, the door will unlock and revert to a manual door.

  2. Metal thumb turn or handle which once turned will allow the door to be manually pushed open.

If you have the ‘breakglass’ type and activate it, please can you ensure you report this to Customer Services as soon as reasonably possible, otherwise once the power is restored the door will be permanently unlocked. 

Please note – Once the power is turned back on, there will be a slight delay before the door returns to normal as it needs to go through a ‘power up’ sequence.

If you require more information, please contact the Card Access System Administrator by emailing

The Estates Department- © University of Kent

The University of Kent, Canterbury, Kent, CT2 7NN, T: +44 (0)1227 764000

Last Updated: 28/06/2018