The Liebert GXT3 UPS user manual provides installation, operation, maintenance, and safety instructions for the 120 V/208 V 500‑3000 VA models.
This manual describes the Liebert GXT3 series of online UPS systems, covering product features, available models, and component descriptions. It includes detailed guidance for unpacking, mechanical installation, wiring, and configuring communication options such as USB and IntelliSlot cards.
Operational procedures cover startup, battery testing, manual bypass, and shutdown, while the maintenance section explains battery replacement, charging, and safety precautions. Troubleshooting tips, specifications, and warranty registration information are also provided.