A:AnswerWe were unsure how this dishwasher would work without a built-in disposer (which our last dishwasher had). But it's fine. We scrape the large food of the plate, and never pre-rinse the plate. The filter system catches what it needs to, and we clean the fine filter every month or two, which is done by rinsing under the tap for a minute or two. We haven't had any issues, and I think the design is simpler.
A:AnswerIt's rated at 44 dba. It is really quite, especially compared to my old Whirlpool that you could hear upstairs! This one you can sit in the same room and hardly notice it.
A:AnswerBosch 300 comes with plug and drain hose. If your current Whirlpool is plugin, no extras needed except elbow for drain hose. If your old whirlpool is hardwired, then you need to purchase junction box separately. We had seamless transition from Whirlpool Gold 3 to this dishwasher. What a difference in sound reduction and cleaning!
A:AnswerYou are probably missing the spring the pops the door open at the appropriate time. Check the bottom of the dishwasher - it may be down there. You can buy replacement parts online to replace the door cover (comes with a new spring).
A:AnswerThere is no alarm sound at the end of cycle. But there is a time remaining counter to tell you how much longer the cycle will take.
You can also configure the dishwasher to shutdown (1) immediately at end of cycle (2) after two hour when cycle complete (3) don't shutdown at end of cycle. Option 2 gives you some idea of when the cycle is done.