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5. Operations
5.1 Switching on the UPS
1. Insert the battery fuses into the appropriate fuse breakers of the external battery cabinets (if present).
2. Press for at least 5 seconds the COLD START button of the SSS interface. The display turns on and the UPS boot starts.
3. The UPS boot ends when the LEDs on the power modules turn to steady blue. Tap on the Setting icon of the menu bar
at the bottom of the display:
4. Provide the mains supply to the UPS by closing the external mains input/bypass input disconnectors (ON position).
5. Tap on the tab “System”. Then choose the item “System Power” and select ON to turn ON the UPS.
6. The LEDs on the power modules turn to steady yellow while they are powered from the batteries. When they are
powered from the mains and the UPS is on-line, the LEDs turn to steady green.
7. Provide the power supply to the load by closing the external output disconnector (ON position).
5.2 Setting the UPS in forced bypass mode
1. Tap on the Setting icon of the menu bar at the bottom of the display
2. Check on the tab “System” that the item “Bypass Enable” is set to YES. If not, tap on the item and enable the bypass.
3. Tap on the item “Bypass Forced Mode” and set it to YES. The LEDs of the PM blink fast in orange.
4. To exit, tap on the item “Bypass Forced Mode” on the “System” tab. Set it to NO. The LEDs of the PM turn to steady green.
5.3 Switching off the UPS
1. Tap on the Setting icon of the menu bar at the bottom of the display.
2. Tap on the tab “System” and select OFF on the item “System Power” to turn OFF the UPS.
3. The LEDs on the power modules turn to steady blue when they are in stand-by mode and the UPS is no longer
supplying the load.
DANGER
In this stand-by condition there are still hazardous voltages on the UPS.
After the removal of power from the UPS, the capacitors discharge time inside the power modules is 40 minutes. It is
forbidden to operate inside the power modules before this time has elapsed.
To disconnect the UPS from all sources of supply:
- open the external mains input/bypass input disconnectors (ON position);
- open all the fuse breakers of the external battery cabinets (if present);
- remove at least one battery drawer for every shelf present to interrupt the battery string.
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