Battery Drawers Replacement; Installation/Replacement Of Battery Drawers With Ups In On-Line Mode - LEGRAND Keor MOD Series Installation And Maintenance Manual

6. Maintenance
6.4

Battery drawers replacement

WARNING
A battery can present a risk of electrical shock and high short circuit current. Read and apply the safety instructions in
chapter 2 before operating on batteries
INDICATION
The battery drawers must always be added/removed in multiples of two (1 KB consists of two battery drawers). Always
replace just one KB at a time. If one KB is added, start from the free slots at the top which are covered by protective covers.
If a KB is completely removed, install the protective covers to block any access to live parts.
If the installation/removal procedure changes the total number of KB installed in the UPS, it is necessary to update this
setting from the control panel.
After concluding the installation/replacement operations, perform a battery calibration to get precise information re-
garding the total autonomy of the UPS.

6.4.1 Installation/replacement of battery drawers with UPS in on-line mode

To replace a battery drawer:
1. Check that the UPS has installed more than 1KB every 25kVA of power supplied to the output.
2. Check that the UPS is not working in battery mode and that the battery charger is in the "maintenance" or "standby"
state.
3. Extract the battery drawer until the safety block prevents to continue the extraction.
4. Remove all the battery blocks from the drawer.
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