u/Beccaban60

I have a 2 year old Bradford White Eco Defender Water heater, my HOA will be doing repairs on the main water line so our neighborhood will have no water for 5 hours. No instructions were given, is it safe to just leave it alone, I don’t want to mess with it and I’m scared I’ll mess something up. Also, I am providing a pic of what I believe is the cold water inlet valve. It’s the blue lever, correct? If I have to turn it off, do I push it up?