Provide local on-site service, maintenance and support for THREE (3) Eaton Power Xpert UPS Model: 9395-825-8825-CE Battery Type VRLA Sealed, 90. Serial Numbers EF391BAA01, EF391BAA02, and EF391BAA03. 2. PREVENTATIVE MAINTENANCE FOR UPS POWER MODULE A. Visual Inspection 1) Inspect all printer circuit board connections for cleanliness, swab contacts if necessary. 2) Inspect all power connections for signs of overheating. 3) Inspect all subassemblies, bridges and legs for signs of component defects or stress. 4) Inspect all DC capacitors for signs of leakage. 5) Inspect all AC capacitors for signs of leakage. 6) Inspect and inventory all customer-owned spare parts. 7) Inspect for, and perform as required, any open engineering changes. B. Internal Operating Parameters 1) DC Ground Detection Offset (if applicable). 2) Inverter leg current average balance (if applicable). 3) Output filter current average phase balance.
