Chapter 13

Maintaining the UPS System

The components inside the UPS cabinet are secured to a sturdy metal frame that is supported by the UPS magnetics. This design allows authorized service personnel to remove repairable components with very little disassembly. All repairable parts and assemblies are located in the front of the UPS, allowing all routine maintenance and servicing to be performed with front panel access.

Schedule periodic performance checks of your UPS system to keep it running properly. Regular routine checks of operation and system parameters will enable your system to function efficiently for many trouble‐free years.

13.1Important Safety Instructions

Remember that your UPS system is designed to supply power EVEN WHEN DISCONNECTED FROM THE UTILITY POWER. The UPS cabinet interiors are unsafe until the DC power source is disconnected and the electrolytic capacitors are discharged. After disconnecting the utility power and the DC power, authorized service personnel should wait at least five minutes for capacitor bleedoff before attempting internal access to the UPS module.

D A N G E R

This UPS contains LETHAL VOLTAGES. All repairs and service should be performed by AUTHORIZED

SERVICE PERSONNEL ONLY. There are NO USER SERVICEABLE PARTS inside the UPS.

W A R N I N G

SServicing and maintenance should be performed by qualified service personnel only.

SLETHAL VOLTAGE PRESENT. DO NOT operate with the cabinet doors open or safety shields removed. Do not make any assumptions about the electrical state of any cabinet in the UPS system.

SSee “Safety Warnings” on page 1-5.

Since each battery string is an energy source in itself, opening the Battery Circuit

Breaker does not de‐energize the voltage within the battery string. DO NOT ATTEMPT

TO ACCESS ANY INTERNAL AREA OF THE BATTERY STRING YOURSELF. VOLTAGES ARE

ALWAYS PRESENT IN THE BATTERY STRING.

If the string requires service, refer to the battery manufacturer's operating manual for instructions on battery maintenance, or contact your Eaton service representative.

EATON Powerware® 9315 UPS (500–750 kVA) Installation and Operation Manual S 164201244 Rev E www.powerware.com

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Powerware Powerware 9315 operation manual Chapter Maintaining the UPS System, Important Safety Instructions