7.1 UPS Maintenance............................................................................................................................................................... 383

7.1.1 Monthly Maintenance................................................................................................................................................... 384

7.1.2 Quarterly Maintenance................................................................................................................................................. 384

7.1.3 Annual Maintenance......................................................................................................................................................385

7.2 Lead-Acid Battery Maintenance.................................................................................................................................... 385

7.2.1 Precautions for Battery Maintenance...................................................................................................................... 386

7.2.2 Monthly Maintenance................................................................................................................................................... 386

7.2.3 Quarterly Maintenance................................................................................................................................................. 387

7.2.4 Annual Maintenance......................................................................................................................................................388

7.3 Testing Batteries..................................................................................................................................................................389

7.3.1 Lead-Acid Battery Test.................................................................................................................................................. 389

7.3.1.1 Performing a Forced Equalized Charging Test...................................................................................................389

7.3.1.2 Performing a Shallow Discharge Test................................................................................................................... 390

7.3.1.3 Performing a Capacity Test...................................................................................................................................... 391

7.3.2 Lithium Battery Test....................................................................................................................................................... 393

7.3.2.1 Performing a Shallow Discharge Test................................................................................................................... 393

7.3.2.2 Performing a Capacity Test...................................................................................................................................... 394

7.3.2.3 Performing a Group Capacity Test......................................................................................................................... 395

7.3.3 Downloading the Test Data.........................................................................................................................................396

8 Troubleshooting...................................................................................................................398

9 FAQ......................................................................................................................................... 401

9.1 Cold-Starting the UPS Using Batteries........................................................................................................................ 401

9.2 Transferring to Maintenance Bypass Mode............................................................................................................... 402

9.3 Transferring from Maintenance Bypass Mode to Inverter Mode.......................................................................403

9.4 Performing EPO...................................................................................................................................................................403

9.5 Clearing the EPO State..................................................................................................................................................... 403

9.6 Exporting Data.................................................................................................................................................................... 404

9.7 Obtaining Active Alarm Details..................................................................................................................................... 406

A Lifting Trolley...................................................................................................................... 407

B Acronyms and Abbreviations........................................................................................... 409

Issue 07 (2022-11-29)

viii

Table of Contents