I'm confused.
The handle looks up to me, meaning on. The note says 'main' switch, not isolation or disconnect.
I have had to deal with local switches that fail to change contact position.
What I usually do is drill, tap, and bolt the handle in the 'stuck position'. I then put a big red tag on it that says: "DANGEROUS - GO AWAY"
Then I order the parts to fix it; or if they are on hand, I make sure the supervisor has them changed as soon as the equipment allows a shut down.
