UPS Operation 4
UPS Shutdown
Performing a UPS shutdown turns off the power to your protected equipment. Make sure the equipment is prepared for a power5off before shutting down the UPS.
iNOTE Do not perform a UPS shutdown if you want to use the Maintenance Bypass feature on the Bypass Module see •Using the Bypass Module" on page41.
To perform a UPS shutdown:
Press and hold the Output 
Off button until the long beep ceases (approximately three seconds).
The Indicator remains lit indicating Normal Mode, load offline.
Unplug the UPS.
The UPS enters Battery Mode for several seconds. The Indicator turns off and the UPS shuts down.
When all LEDs are no longer illuminated on the UPS, switch the circuit breaker to the OFF (O) position on each battery module or cabinet.
Changing the Output Voltage
To change the operating voltage of the UPS:
Perform a UPS shutdown as described in the previous section.
Follow the instructions in •UPS with Bypass Module Startup" on page 33.
Using the Bypass Module
The Bypass Module provides continuous online power for your equipment. With the Bypass Module, you can replace the UPS without losing power to the load.
Using Maintenance Bypass
Use the following procedure to transfer the critical load to Maintenance Bypass (ACLine operation) and remove the UPS:
Turn the Bypass switch on the Bypass Module to the BYPASS position (see Figure18). The Bypass Module is now powering your equipment from utility power.
Press and hold the Output 
Off button until the long beep ceases (approximately three seconds). The Indicator remains lit.
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