OPTI-UPS IS5000LR - Manual (Page 16)

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4.11.2 To change the UPS O/P frequency at DC start
When the frequency value is blinking, push any selection button,
or , for 1 second to change
the frequency setting! The setting will keep changing every 2 seconds if you keep pushing the
button. Push two selection buttons at the same time for next setting, or leave the LCD blinking
without pushing any button for 30 seconds to end the setting.
4.11.3 To change the UPS rated voltage
When the voltage value is blinking, push any selection button for 1 second to change the rated
voltage. Keep pushing the button until the required voltage blinking. Then, push two selection
buttons at the same time for next setting, or leave the LCD blinking for 30 seconds to end the
setting.
4.11.4 To change the Auto-turn-on setting at the recovery of utility power
The method of changing the setting is similar to that of voltage setting. If you don’t need
Auto-turn-on function, please select “oFF”. To select “On” is for immediate auto turning on at the
recovery of utility power. While the “On.S” means auto turning on with safety mode. Sometimes,
when battery is empty after blackout, the auto turn-on function will have very short backup time if
blackout happened again following with a short time recovery. To select “On.S” will provide
Auto-turn-on only when the battery is charged for, at least, 30% of its capacity.