User`s guide

UPS MAINTENANCE

Eaton 5125 Rack-Mount UPS (5000/6000 VA) User's Guide S 164201541 Rev D

www.eaton.com/powerquality

Replacing the Electronics Module

The electronics module can be hot-swapped for easy replacement

without losing power to your equipment. The UPS automatically

switches to Bypass mode. Battery mode is not available; however, the

utility power continues to be passively filtered by the UPS.

If you prefer to remove input power to change the electronics module,

see “Turning the UPS Off” on page 40.

To replace the electronics module:

1. Disconnect the communication cable if installed.

2. Remove the X-Slot card if installed.

3. Remove the UPS front cover by pulling on both ends (pull harder on

the left side and lift the front cover off the right retaining hook).

4. Remove the screw on the left of the electronics module. Remove

the electronics module and retain the screw.

NOTE To prevent power loss to your equipment, follow Step 5 closely.

5. While inserting the new electronics module, press and hold the

button for approximately five seconds or until the front panel

indicators illuminate individually.

NOTE If the five load level indicators are flashing, the module may not be properly seated.

Remove and reinsert the module as described in Step 5.

6. Secure the electronics module to the UPS chassis with the screw

removed in Step 4.

7. Replace the UPS front cover.

8. Replace the X-Slot card if removed in Step 2.

9. Reconnect the communication cable if removed in Step 1.

10. See “Recycling the Used Battery or UPS” on page 59 for proper

disposal.