OPTI-UPS DS120KC33 User Manual
Page 42
5-4 System recovery from maintenance procedure
Turn ON switch S1 (for some UPS models only), S2 (for some UPS models only), S3 and S5, Turn
off S6 in sequence. Turn on S4 and then press “ON” button on the panel for a few seconds. A screen for
conforming setting appears. Press “ ENTER” button. The a message “Setting is successful” will appear
in a few seconds. The LCD panel will be illuminated after 50 seconds. Measure the voltage on terminal
B+ and B- to see if the value is exact 410VDC. Measure the output voltage and frequency of terminal R,
S, T to see if they are all correct. If the reading is correct, it means the system is initialized successfully.
Finally, install the protection plate on Switch S6. Please follow operating steps as shown in fig.5-3。