APC MGE 300 - Manual (Page 16)

MGE™ Galaxy™ 300 10-40 kVA 3:3, 10-30 kVA 3:1 - 380/400/415 V Installation 12
Replace the Batteries
Warning: Before battery replacement, ALL safety instructions in the Safety Sheet (990-
3620) must be read, understood and followed. Failure to do so could result in equipment
damage, serious injury, or death.
Caution: Batteries must be replaced by qualified electricians only.
Note: For the replacement of batteries, please refer to the relevant diagram for your
configuration under “Appendix” on page 16.
Note: Before replacing batteries, make sure that the UPS is running in normal operation with
no internal UPS faults displayed. In normal operation all breakers must be in the ON (closed)
position except for the maintenance bypass breaker which must be in the OFF (opened)
position.
Note: Replacing batteries in the UPS and in the XR enclosure(s) requires that the UPS is
turned into maintenance bypass operation and that the batteries are disconnected. Follow the
procedure described under “Connect an XR Battery Enclosure to a running UPS” on page 10.