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Compaq UPS R3000 XR Maintenance and Service Guide
Replacing an ERM
To replace an ERM:
1.
Turn all battery circuit breakers on all attached ERMs (one circuit breaker each) to the Off
position.
2.
Unplug the ERM from the back of the UPS.
Figure 3-21. Unplugging the Extended Runtime Module
4.
Remove the front bezel from the ERM you want to replace.
5.
Remove the screws that secure the ERM to the front of the rack.
6.
Remove the ERM from the rack.
7.
To replace the ERM, place the new ERM in the rack and reverse steps 1 through 4.