Henkyou Gurashi no Maou, Tensei shite Saikyou no Majutsushi ni naru - Vol. 8 Ch. 36 - Lord of Phantom's First Startup Experiment

[pepoluan]

I thought that yuuki put a sceal on the robot? I guess I need to check relevant chapters again

Yuuki programmed the mecha to be turned off for 24 hours, giving time to transport the robot to the Magic Guild.

I think the timer had expired by the time the mecha is experimented with.