My safe will not open.

The key should open the safe in any circumstances.

All safes of this type have a 4 number combination.

They are very insecure and can be open using a Rare Earth Puck Magnet. Then you can remove the batteries, and reset the code.

I think you have given us the Serial Number not the Model Number?

Check Your Safe ' SentrySafe

https://www.sentrysafe.com > Support
Enter Your Serial Number. Enter the serial number of your electronic fire safe in the space provided below to determine if you need to read an important ...
Missing: 633639 ‎' Must include: 633639

• 
  

  Customer Support ' SentrySafe

  https://www.sentrysafe.com > support
  Guides to safe setup, troubleshooting, and other support needs. View Videos. Sign up for updates and Offers from SentrySafe. New subscribers get 10% off ...

https://www.google.com/search?q=Locked+out+of+Sentry+BW-633639

..

New Sentry Electronic Fire Safe Opened in Seconds with No ...

? 8:22
https://www.youtube.com/watch?v=u3p5KUNfDG0
May 15, 2015 - Uploaded by Mr. Locksmith
New Sentry Electronic Fire Safe Opened in Seconds with No Sign of ... Marc Tobias and Terry Whin-Yates open a locked Sentry Fire Safe in ...

Unlocking sentry safe without keys!! - YouTube

? 3:41
https://www.youtube.com/watch?v=Zy5kJ5Uqa2o
Jun 7, 2012 - Uploaded by PAWS611
You saved me from destroying sentry fire safe with a mini-sledge and .... haha haha doubted you at first but I got it open just kept wiggling it ...

Sentry Safe Not Safe - YouTube

How to crack sentry safe, Lost safe combination - YouTube

? 5:43
https://www.youtube.com/watch?v=UdMun9qBgFo
Sep 25, 2012 - Uploaded by George Serrano
Lost safe combination Sentry Safe m# DS0100 Cracked! Still usable.

' Sentry® Safe ' DS3431 Combination FIRE-SAFE®

go here: http://www.sentrysafe.com/CustomerCare/Product_Manuals

Your best bet would be to contact the manufacturer, just be prepared to provide your proof of purchase for the item.

Shut the pump off, then push down on the backwash (BW) handel turn it clockwise 180 degrees to BW and start pump again. Run pump till water coming from BW pipe runs from cloudy to clear. Shut the pump off and pushing down on the BW handel again turn it 180 degrees to filter and start pump again.

Samsung Sync 223 BW open it find the plybac there are two switch there for the screen focus turn it with a screw until the screen is ok then apply glue to fix it.

Actually, this problem can be fix going to power management under control panel. You have to log in in safe mode in order change configuration. It displays stand by monitor and you choose the time that you see fit.

you just select a program just go to the settings an then open a folder, after that try to play a song,

You don't have to replace them as a set unless there both empty. You could try resetting the printer by unplugging it, wait 30 seconds, replug it back in, and turn the power on.