Liebert 130 kVA - Manual (Page 56)

User Manual
Hipulse - Single Phase ‘1+N’ UPS System 130 kVA - 110V
36
5.4
Procedure for Switching the UPS into a Maintenance
Bypass condition from normal operation
The first part of this procedure details how to select the Inverter OFF and power the
load from the bypass mains via the Static Switch. This procedure should be followed
to transfer the load from the UPS inverter output to the maintenance bypass system.
This may be required during UPS maintenance procedures.
NORMAL OPERATION:
Follow the procedure below to transfer the load from the output to the Maintenance
Bypass of UPS.
ECOMODE:
Follow the procedure below to transfer the load from the output Maintenance Bypass
of the UPS.
CAUTION
The following window alls the operator to select the UPS
inverter ON or OFF
Before making this operation, read messages on display to be sure
that bypass supply is regular and the inverter is synchronous with it,
not to risk a short interruption in powering the load.
IF YOUR ARE NOT SURE OF WHAT YOU ARE DOING
- THEN DO NOT DO IT
1. Press the INV switch on the left side of the
operator control panel.
2. Confirm this operation as instructed at the
display:
Press ENTER for 1 second to confirm INV OFF
Press ESC for 1 second.
3. If ENTER is pressed:
The Module Mimic indicator Load on Inverter (5)
will extinguish and the Load on Bypass indicator (6)
will flash amber, and also the red led (13) will flash
and normally will accompanied by an audible
alarm.
Pressing the Alarm Silence Switch cancels the
audible alarm but leaves the warning message
displayed until the appropriate condition is rectified.
4a) NORMAL OPERATION:
The UPS inverter will not shut down and the load
will transfer to the Bypass supply.
The Module Mimic indicator Load on Bypass (6)
will flash amber and the Load on Inverter (5)
indicator will extinguish.
Your load is now powered via the Static Bypass system.
4b) ECOMODE:
WARNING! STOP
INVERTER REQUESTED
ENTER TO CONTINUE
↵
ESC TO CANCEL
WARNING! STOP
INVERTER REQUESTED
ENTER TO CONTINUE
↵
ESC TO CANCEL