Powerware 9330 - Manual (Page 163)

14--1 Powerware 9330 (10 kVA--40 kVA) Installation and Operation
164201300 REV. G 061502
Maintaining the UPS System
14.1 General
The components inside the UPS cabinet are secured to a sturdy metal frame.
All repairable parts and assemblies are located for easy removal, with very little
disassembly. This design allows authorized service personnel to perform routine
maintenance and servicing quickly.
You must 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.
14.2 Important Safety Instructions
Remember that your UPS system is designed to supply power EVEN WHEN
DISCONNECTED FROM THE UTILITY POWER. The UPS module 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 5 minutes for capacitor bleedoff before
attempting internal access to the UPS module.
WARNING:
Servicing and maintenance should be performed by qualified service personnel
only.
WARNING:
LETHAL VOLTAGE PRESENT. This unit should not be operated with the cabinet
doors open or protective panels removed. Do not make any assumptions about
the electrical state of any cabinet in the UPS system.
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
you suspect that a battery string needs service, you should contact your local field
service office.
If the string requires service, refer to the battery manufacturer’s operating manual
for instructions on battery maintenance, or contact your local field service office.
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