OPTI-UPS DS120KC33 - Manual (Page 20)

Status indication on LCD/LED panel is divided into 4 modes:
(1) System Normal mode: In this mode, only INPUT, RECTIFIER, CHARGE, INVERTER, OUTPUT
LEDs are illuminated and others LEDs are off.
(2) System Bypass mode: INPUT, BYPASS and OUTPUT LEDs are illuminated and others are off.
(3) Back-up mode: DISCHARGE, INVERTER and OUTPUT LEDs are illuminated and others are off.
(4) Manual Bypass mode: When Switch S6 is switched to “ON” position, Only MANUAL BYPASS
LED is on, others are off. It means that the system has transferred to Manual Bypass mode correctly.
After S1, S2, S3 and S4 are switched “OFF”, use a discharging tool to release the remaining voltage
on the DC capacitor. When the MANUAL BYPASS LED is extinguished, proceed to execute
maintenance operation.
3-2 Function key
Introduction to function key on the panel
ON button for turning on inverter
OFF button for turning off inverter
← button for shifting cursor left
→ button for shifting cursor right
↑ button for shifting cursor up or turn to other page
↓ button for shifting cursor down or turn to other page
ESC button Exit from present page
ENTER button for confirming setting