Eaton 9PXM8S4K, User Manual

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94 4–20kVA Users Guide P-164000669 4–20kVA Users Guide P-164000669—Rev 10
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The Eaton 9PXM hot-swappable feature lets you replace the battery modules without disconnecting the load or
damaging the batteries.
NOTE The Eaton 9PXM UPS will operate with uncharged (or no) batteries, but will have limited
(or no) battery backup capability. The UPS will indicate an alarm with a insufficient
number of batteries present. One battery string (two battery modules) must be installed
adjacent to each power module.
To replace a two-battery slot in pairs:
1. Remove the front cover.
The cover has magnetic latches on the left and right sides that hold it in place.
2. Loosen the captive screw on the retaining bracket and slowly pull the upper battery module out of the
cabinet.
3. Repeat the procedure with the lower battery module.
4. Treat the original and replacement battery modules with care to avoid damaging connectors or internal
circuitry. Label the original batteries with masking tape or some other identifier. Record the serial number
of the replacement modules for your warranty.
5. Insert the replacement battery modules by sliding the lower module carefully into the cabinet. Repeat for
the upper replacement module.
6. Reinstall the retaining bracket and tighten the captive screw.
7. Replace the front cover.
Figure 78. Battery Replacement
Retaining Bracket
Battery
Modules
Captive
Screw
Front Covers
Battery Replacement