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HT33 Series User Manual
5.5 EPO Procedure
The EPO button on UPS operator control and display panel is designed to switch off the UPS in
emergency conditions (e.g., fire, flood, etc.).To achieve this, just press the EPO button, and the system
will turn off the rectifier, inverter and stop powering the load immediately (including the inverter and
bypass output), and the battery stops charging or discharging.
If the input utility is present, the UPS control circuit will remain active; however, the output will be
turned off. To completely isolate the UPS, you need to disconnect the external mains input supply to the
UPS.
5.6 Language Selection
The LCD is available in two languages: Chinese and English.
The language can be selected through LCD prompt window.
5.7 Control Password
When the LCD displays “input control password 1”, the initial password is 12345678.
