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UPS Operation 4
Lucent Technologies Model 3000 UPS Operator's Manual (167Ć405Ć119 Issue 3)
41
UPS Shutdown
Performing a UPS shutdown turns off the power to your protected equipment.
Make sure the equipment is prepared for a powerĆoff before shutting down the UPS.
NOTE 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 page 41).
To perform a UPS shutdown:
1 Press and hold the Output
Off button until the long beep ceases
(approximately three seconds).
The
Indicator remains lit indicating Normal Mode, load offline.
2 Unplug the UPS.
The UPS enters Battery Mode for several seconds. The
Indicator turns
off and the UPS shuts down.
3 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:
1 Perform a UPS shutdown as described in the previous section.
2 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
(AC Line operation) and remove the UPS:
1 Turn the Bypass switch on the Bypass Module to the BYPASS position (see
Figure 18). The Bypass Module is now powering your equipment from
utility power.
2 Press and hold the Output
Off button until the long beep ceases
(approximately three seconds). The
Indicator remains lit.
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