Re: What is this? MS? Volt Reducer?
Unfortunately, a switch "can" have a NO position, yet once installed, it becomes NC, if that makes sense. If I understand the diagram, it appears that MS-1 is the backup buzzer, so yes, I'd disconnect it.
The buzzer is designed to be placed directly between battery 36 volt + and -. If you try and bypass this with a wire, it will get HOT!
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