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R&D – USER MANUAL DT0430-E04
4.7. INSTRUCTIONS FOR SWITCHING SYSTEM TO MANUAL BY-PASS MODE
For the switches details refer to the fig. 4.3
1. Disconnect the battery
Open the battery switch on the battery cabinet
2. Switch load on reserve line (skip this step if the UPS is configured to POWER SAVE)
Enter into “3. UPS COMMANDS” of the menu, choose and confirm “3.3 SWITCH THE LOAD”.
The red indicator will appear on the control panel and the sound will be audible.
Since this moment the load is supplied directly from the reserve line.
3. UPS Shutdown
Enter into “3. UPS COMMANDS” of the menu, choose and confirm “3.2 SYSTEM STOP”.
An automatic shutdown procedure will start and the LCD display will show percentage of it's advance.
When the procedure finishes, the message ”System stop done” will be displayed and the red indicator
will be present on the control panel.
4. Close MANUAL BY-PASS (I3) switch
Remove the padlock (or any other mechanical safety lock) from the switch and lift the knob to ON
position
The warning sound will be activated and the LCD screen will display “Manual bypass switch closed”.
The red indicator of the control panel will remain on.
5. Open switches
Open in sequence, MAINS INPUT SWITCH (I1), the OUTPUT SWITCH (I4) and finally RESERVE
INPUT SWITCH (I2).
The load is supplied directly from the reserve line through the manual by-pass.
ATTENTION!
At this point the load is supplied directly by the reserve network
and inside the UPS there are not hazardous voltages, except of the compartment
(covered with metal panel) where the input and output cables are connected,
and - for few minutes - inverter DC and AC capacitors (also covered with metal panel).
