Installation guide

UPS 40 – 160 kVA, 400V 50/60 Hz output
User’s and Installation Guide
1023294
Revision C
49
8 Maintaining the UPS System
8.1 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
authorised 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.
8.2 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, authorised service personnel should wait at least five minutes for
capacitor bleed off before attempting internal access to the UPS module.
Warning!
• Qualied service personnel should perform servicing and maintenance only.
• 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-energise 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 STRINGS.If you suspect that a battery string needs service, you
should contact your service representative.
If the string requires service, refer to the battery manufacturer‘s operating manual for
instructions on battery maintenance, or contact your service representative.
Observe these precautions when working on or around batteries:
• Removewatches,rings,orothermetalobjects.
• Usetoolswithinsulatedhandles.
• Wearrubberglovesandboots.
• Donotlaytoolsormetalpartsontopofbatteriesorbatterycabinets.
• Disconnectthechargingsourcepriortoconnectingordisconnectingterminals.
• Determineifthebatteryisinadvertentlygrounded.Ifitis,removethesourceoftheground.
Contact with any part of a grounded battery can result in electrical shock. The likelihood
of such shock will be reduced if such grounds are removed during installation and mainte-
nance.
• Whenreplacingbatteries,usethesamenumberofsealed,lead-acidbatteries.
• Properdisposalofbatteriesisrequired.Refertoyourlocalcodesfordisposalrequirements.
See chapter 10. Recycling the used UPS or batteries