UPS MAINTENANCE
Eaton 9355-F47 Unirom UPS (10/15 kVA) User's Guide S 164201642 Rev C www.eaton.com/powerquality
85
Replacing the Internal Batteries
D A N G E R
Lethal voltage will be present when performing the steps in this section.
To replace the internal batteries:
1. Notify others working in the immediate area that the UPS is under
maintenance control.
2. Verify that the input, output, and battery circuit breakers are in the
OFF position (see Figure 41).
3. Using customer-provided locks, lock the input and output circuit
breakers in the OFF position. Display a DO NOT OPERATE tag,
completed with your name, the date, and the time of locking.
4. Verify the absence of hazardous energy according to Table 1 on
page 9.
UPS Battery
Circuit Breaker
Input and Output
Circuit Breakers
Figure 41. UPS Rear View