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R
ESTORE THE
O
N
L
INE
M
ODE AFTER
M
ANUAL
B
YPASS
Carefully follow the operations described below in order to switch the UPS from “Manual Bypass” to ON LINE mode without
losing the load supply:
Switch on (close) the Mains SWIN, the Bypass SWBYP and the Output switch SWOUT.
The system will turn on in stand-by “MANUAL BYPASS ACTIVE” mode (The status led will light up and the display will start).
Verify that the Mains and the Bypass input voltages are present on the “System measurements” page of the display.
Verify that no anomalies are present on the status bar (except [A10] – Battery circuit open, and [A11] - Cover of maintenance
switch is open).
Close the battery switch. Check that the battery starts to be charged.
From the “Command Panel” page, press the “System ON” icon to turn on the system.
Confirm the “System ON Command”, by selecting OK.
If the “SYSTEM ON” command is activated properly, all measurements will be ok and no anomalies will be present (except
[A11] Cover of maintenance switch is open”).
NOTE: Before opening the maintenance bypass switch, check the display:
if the bypass line is represented with a white stripe, it means that the load is supplied by the manual bypass alone.
If the maintenance bypass switch is opened in this condition, the power to the load will be lost.
If the bypass line is represented with a solid blue stripe, the static bypass is also present, hence the maintenance
bypass switch can be opened without risk to lose the load power (also output switch must be closed).
✔
✘
The bypass line is represented with a filled blue line. In this
condition, it is possible to open the manual bypass switch.
The bypass line is represented with a white stripe. In this
condition, do not open the manual bypass switch: the load
will be lost.
Open the Manual bypass switch (SWMB).
The load is now fed by the static bypass. Confirm output voltage presence.
Put back in place the Maintenance Bypass interlock paddle.
Verify that the system status changes to “ON LINE” mode in a few seconds.
Now the system is On Line.