The manufacturer would be more than happy to come to your unit to give an inservice. I know several reps for one of the big specialty bed manufacturers and they do this all the time. Free. You can google them and get contact information, or your purchasing department will know who the local rep is.
I would hazard a guess that turning off the alarm is a bad idea. Generally speaking, anytime somebody says, "Oh, I just turn off the alarm," you should be very worried. Bet the rep could help you troubleshoot the thing and help everyone understand how to make it most effective for the patient.