Powerware 5140 - Manual (Page 41)

Operation
33 Powerware ® 5140 User’s Guide
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Starting the UPS on Battery
NOTE Before using this feature, the UPS must have been powered by utility power
at least once and the batteries must be completely charged.
NOTE The UPS does not auto-detect the input frequency when starting on battery;
the default is the last frequency used by the UPS.
This feature allows you to start the UPS without utility power. To turn on
the UPS without using utility power, press and hold the On button for
five seconds.
The UPS supplies power to your equipment and goes into Battery mode.
When the UPS starts on battery, it does not conduct a self-test to
conserve battery power.
Maintenance Bypass
Battery power is not available while on bypass; however, utility power
continues to be passively filtered by the UPS.
To switch the UPS to Maintenance Bypass mode:
1. Turn the Bypass switch on the UPS rear panel to the BYPASS
position (see Figure 23).
The indicator illuminates and the UPS beeps every three
seconds. The UPS is now powering your equipment directly
from utility power.
Figure 23. The UPS Bypass Switch