How to put batteries in ds3607

It is on the first page of your manual according to this

https://cdn.masterlock.com/sentrysafe/resources/pdf/manuals/Sentry-Barracuda-Owners-Manual-Instructions.pdf

https://www.sentrysafeshop.com/Sentry-Safe-FIRE-Electronic-Safes-Model-DS3607-p/ds3607.htm

..

Maybe is time to replace battery?

That means that it is low on battery and does not have enough power to lock.

Hi, you would either need to pay for a locksmith to open it and reset the code or you will need to contact sentrysafe

If you registered your safe when you purchased it go here to recover your combination.

If you did not register your safe after you purchased it click here and follow instructions on recovering your combination.

After recovering your combination be sure and register it here so next time you will have easy access in case you forget it again.

If none of the above options have helped you will need to Email or Call customer service directly.

It should be left, right, left

Hi there,
Don't worry with your owner manual, there is FixYa for you . And please get back your manual here :
http://www.sentrysafe.com/Products/184/DS3607_Electronic_FIRE-SAFE_#tabs-4


Regards, vote this if useful, Jay

Your batteries are probably low. The safe came with a key in case something like this happens. I am afraid that you are going to have a rough Monday without the key.

If you need further assistance:
https://www.sentrysafe.com/CustomerCare/Lost_Your_Combination

here is the user manual for the safe http://www.sentrysafe.com/pdfs/OwnersManuals/513022.pdf
hope this helps.