Over time, keyless combination locks as well as key operated locks will wear with use.
In most instances this wear will start to show up with the occasional 'hard-to-open' combination lock.
"It took me 5 tries to dial it open yesterday!"
"It was really hard to close last night."
"The dial is really hard to turn on that first number."
"It seems really loose when I turn the dial."
"I spent 2 hours last week trying to open that stupid lock!"
If you have said this or heard it being said, you should take action NOW to avoid the expense of a lock-out.
In the vast majority of cases the lock can be set right by a competent and complete servicing.
Key locks can wear prematurely if they are lubricated to overcome 'stickyness' of operation. Worn or damaged keys can mean a 'clicky' feel to the lock.
Servicing the safe also involves the inspection and adjustment of the door on the hinges, the boltwork in the door and the movement of the bolt-throw handle which operates the boltwork. Many locksmiths use the incorrect grade grease or too much grease to lubricate these moving parts.
Many a safe has been put right by a thorough clean and the application of the correct grease type.
If your last service involved a can of spay.......... get it re-done soon.