How to Maintain High Frequency 3/3 Online UPS in uninterrupted condition
Here make example with MUST model EH9335:
Step 1:Open the maintainance switch baffle,turn on the switch until system from DC/AC mode to bypass mode;
Step 2: AC input, AC output, DC breaker switch turn off;
Step 3:Maintain
Step 4:After finish maintained, turn on the AC input, AC output, DC breaker switch
Step 5: Turn off the bypass maintain switch, close baffle.
