This is a newly deployed EMERSON UPS. The model is: GXT3-3000RT230. After mounting it to the server rack, and put in the power cable to the INPUT. I tried to up the UPS by pressing the MAIN Switch on the front panel, the UPS's battery LEDs is blinking for a while, but, suddenly whole UPS can't be power up. I saw there is a CIRCUIT BREAKER on the rear panel, that swung to OFF. Shall I swing it to ON? Anything to try out?
Thank in advance.