HP Uninterruptible Power System T1000 XR and T1500 XR Models User Guide  2-1 
 
 
HP CONFIDENTIAL Codename: Sherman Part Number: 216164-002 Last Saved On: 8/27/02 3:59 PM 
 
2 
Operation 
This chapter contains information on operating the UPS. Topics include the front panel 
controls, LED indicators, and modes of operation. Knowledge of these features is helpful 
when configuring and troubleshooting the unit.  
 
NOTE:  For installation considerations and procedures, refer to the instructions included with the UPS. 
Copies of this document can be downloaded from www.hp.com. 
Front Panel Controls and LED Indicators 
The front panel controls and LED indicators provide an easy-to-use interface for UPS 
configuration and monitoring.  
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Figure 2-1:  Front panel LED display and controls when front bezel 
removed 
Item Description  Meaning/Function 
1  Overload LED  Red—UPS load exceeds maximum power available. 
2  76% to 100% load  Green—UPS load approximately 76% to 100% of maximum power. 
3  51% to 75% load  Green—UPS load approximately 51% to 75% of maximum power. 
4  26% to 50% load  Green—UPS load approximately 26% to 50% of maximum power. 
5  0% to 25% load  Green—UPS load approximately 0% to 25% of maximum power. 
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