This is a SLS Cashguard safe. Staff had reported they were having problems with the key. The key had jammed into the lock and it would not move.
The key was stuck in an original SLS lock. The lock was older than me and had stood the test of time but it had finally worn out. The key was removed and lock sorted.
Safes used day in day out will wear out eventually. Most I see are abused and show signs of failure well before I get called to open. With most things prevention is better than cure. If you find your safe difficult to open,
you rely on one key or its started being unreliable give me a call. I can service safes and recommend solutions if the safe cannot be saved.