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Batteries have a finite life (typically 3-5 years). You can arrange for a replacement; many certified service companies, like Masenergo, perform on-site battery replacement and recycling services for Liebert units. This process involves identifying the correct battery blocks (your UPS can use VRLA, Wet cell, or NiCd types), and safely installing them. Because of the high risk, it is strongly recommended that this is carried out by a qualified professional. If you choose to do it, follow the safety procedures to the letter.
Check the input rectifier/charger SCRs for shorts.
Walk over to the external battery cabinet and ensure the main DC circuit breaker is firmly closed (ON).
Restart the rectifier via the operator control panel once input power stabilizes. Inverter Desaturation / Inverter Fault liebert hipulse d ups manual fix
Inspect the rectifier control board for visible signs of burn marks or swollen capacitors. Clear any dust accumulation using low-pressure dry compressed air.
Ensure all three phases of the input power are stable.
[Normal Mode: Inverter Powered] │ ▼ [Transfer to Static Bypass via Screen] │ ▼ [Close Maintenance Bypass Breaker (Q3)] │ ▼ [Open Inverter Output Breaker (Q2)] │ ▼ [Open Rectifier Input Breaker (Q1)] Step 1: Transfer to Static Bypass Navigate the LCD display panel to the command menu. Batteries have a finite life (typically 3-5 years)
Ensure the UPS is already operating on Static Bypass (as detailed in the section above). Never attempt to turn the maintenance bypass switch while the inverter is actively supporting the load.
Always use isolated tools and verify zero voltage with both AC and DC voltmeters before touching internal terminals. Replacement Parts:
If you must service internal components without dropping the critical load, you must transfer the Liebert HiPulse D to Maintenance Bypass. Because of the high risk, it is strongly
You run a manual battery test. After 10 seconds, the UPS shrieks and returns to line mode, showing E08 (Battery Low) or E43 (Battery Test Aborted).
The Liebert HiPulse D front control panel displays specific visual and audible alarms when a fault occurs. Below are the most frequent alarms and the step-by-step manual checks required to resolve them. Charger/Rectifier Fault
The Liebert HiPulse D is a heavy-duty, industrial-grade Uninterruptible Power Supply (UPS) designed for critical data centers and industrial automation. When this system experiences a fault, minimizing downtime is critical. This manual fix guide compiles technical troubleshooting procedures, common alarm codes, and corrective actions to help facility engineers safely diagnose and resolve issues. 🛠️ Safety First: Vital Precautions