Lucent Technologies Uninterruptible Power Systems 3000 VA - Manual (Page 51)

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 theUPS.
The UPS enters Battery Mode for several seconds. The

Indicator turns
off and theUPS 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 changetheoperating voltageof theUPS:
1 Perform a UPS shutdown as described in the previous section.
2 Follow theinstructions in UPS with Bypass ModuleStartup" on page33.
Using the Bypass Module
The Bypass Module provides continuous online power for your equipment. With
theBypass Module, you can replacetheUPS without losing power to theload.
Using Maintenance Bypass
Usethefollowing procedureto transfer thecritical load to MaintenanceBypass
(AC Lineoperation) and removetheUPS:
1 Turn theBypass switch on theBypass Moduleto theBYPASS 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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