Good afternoon. My name is***** model of Sentry safe do you have?
Ok, give me a moment to look up that model so that I know what we're talking about
Ok, I saw the model and here is what I would suggest...
First, get some dessicant packs for the inside of the safe to dry out any moisture.
Then, get a can of compressed air at a store like Staples. Also, a can of WD-40 from a hardware store.
Spray the compressed air with the small straw attachment behind the dial on the lock, and rotate the dial. This will blow out any old lubricant or dust. Then, spray some WD-40 in using a small straw, and turn the lock dial. Get a decent amount of WD-40 in there, but not an excessive amount. Keep turning the dial for a bit so that the WD-40 makes it way into the dial. I think then you'll be good to go.
WD-40 is an all purpose lubricant that has been used for years on safes
Where did you get that info from?