You can silence ALL alarms except for “Sensor Glucose Over 400”, “Sensor Glucose Below 40”, “Battery Low Delivery Suspended”, and one other critical alarm I can’t remember off the top of my head. Menu > Audio Options > Alert Silence Options > All Sensor Alerts, you can then select 0:30hr to 24 hrs duration in 30 minute increments. If Automode runs into trouble, it will first go into a reduced basal “Safe Auto”, eventually it will exit to Manual Mode. If your glucose reading ever drops below 40 in any mode, basal delivery is stopped until you come back above 40, this is a safety feature you cannot disable. I think you have to manually enable “Suspend on Low” and “Suspend Before Low” for manual mode every time you exit Automode into Manual Mode though, because these features are ‘turned off’ in Automode. You can select a conservative basal rate in manual mode before going into Auto Mode, that way if you drop out of Auto while you’re asleep you know it won’t drop you low. Manual mode basal patterns do not effect Automode rates in any way.
To be successful in Auto Mode(closed loop), it is imperative that you get your insulin sensitivity factor, carb ratio, and active insulin time dialed in. The amount of carbs you’re telling the pump that you are eating also needs to be fairly accurate. Automode just looks at the past 6 day rolling average of basal delivery per time of day, makes minor adjustments for glucose reading rising or falling in the last 5 minutes, and delivers the appropriate basal. It takes the safest approach to discrepancies by assuming that any error is the pump or calculuation’s fault, and starts asking for a confirmation BG reading to make sure it’s making safe decisions.
You can’t use a fake bolus to correct, that trips up the system; you must give “Bolus Wizard” a BG value and let it handle the correction bolus. If you have a low BG and eat something to raise it, you have to enter that BG and Carb count into the “Bolus Wizard” screen; bolus wizard will know to not give a certain amount of insulin in order to get you back up to target glucose reading, and Automode wont get tripped up wondering how your glucose came back up.
Any small snack needs to be entered into the pump or it wont know that you ate and will assume a basal delivery error.
My sensor readings have always been more accurate than my glucose monitor, so at this point I feel safe entering an SG reading into BG field for boluses, but you shouldn’t ever calibrate your SG off of a SG reading.
If you are willing to give total control to Automode, and you can accurately give it carb counts, then it will work great for you with minimal alarms going off.