Instruction manual
UPS OPERATING INSTRUCTIONS
Eaton
®
9390 UPS (20–80 kVA) and 9390IT (20-40 kVA) Installation and Operation Manual S 164201603 Rev 4 www.eaton.com/powerquality
9-7
9.1.12 Transfer from Bypass to High Alert Mode
To transfer the critical load to High Alert mode:
NOTE The High Alert mode commands are displayed only if enabled at the factory or by an Eaton Customer
Service Engineer.
1. Press the CONTROLS pushbutton on the main menu bar. The System Status
screen is displayed.
2. On the System Status screen, select the BYPASS command.
3. Press the
CONTROLS pushbutton on the System Status menu bar. The Bypass
Control Command screen is displayed.
4. On the Bypass Control Command screen, select GO TO HIGH ALERT.
5. Press the
SELECT pushbutton on the Bypass Command menu bar.
The UPS transfers to High Alert mode, but remains online. After one hour the
UPS transfers to Energy Saver mode and the critical load is immediately supplied
by the bypass source. If the bypass source is not available, the power module
remains on and an alarm sounds.
The NORMAL status indicator is illuminated. The UPS status indicates HIGH
ALERT. The UPM status indicates ONLINE. The power module is on.
9.1.13 Transfer from High Alert to Bypass Mode
To transfer the critical load to Bypass mode:
NOTE The High Alert mode commands are displayed only if enabled at the factory or by an Eaton Customer
Service Engineer.
1. Press the CONTROLS pushbutton on the main menu bar. The System Status
screen is displayed.
2. On the System Status screen, select the BYPASS command.
3. Press the
CONTROLS pushbutton on the System Status menu bar. The Bypass
Control Command screen is displayed.
4. On the Bypass Control Command screen, select GO TO BYPASS.
5. Press the
SELECT pushbutton on the Bypass Command menu bar.
The UPS transfers to Bypass mode and the critical load is immediately supplied
by the bypass source. If the bypass source is not available, the power module
remains on and an alarm sounds
The BYPASS status indicator is illuminated. The UPS status indicates BYPASS. The
Bypass status indicates ON. The UPM status indicates READY. The power module
remains on.