Maintenance - LEGRAND KEOR HPE Manuel De Fonctionnement

2.3.7 Maintenance

Service and repairs must be carried out by skilled and authorized personnel. Before carrying out any
maintenance operation, the UPS must be disconnected from AC and DC supply sources.
The device is provided with internal isolators which allow to isolate the internal power circuits.
However the voltages of the supply sources are present on the terminals. To isolate the device
completely, provide external circuit breakers on the lines.
The device contains dangerous voltages even after shutdown and disconnection from the supply
sources, due to the internal capacitors which discharge slowly. Thus we recommend to wait at least
5 minutes before opening the device doors.
Injury hazard due to electric shock!
Any operation must be carried out only when voltage is absent and in compliance
with safety directives.
 Make sure the battery circuit breaker that may be placed near the battery has
been opened.
 Isolate the device completely by operating the external circuit breakers.
 Wait at least 5 minutes in order to allow the capacitors to discharge.
After switching off and disconnecting the device there still might be very hot components (magnetic
parts, heat sinks); therefore we recommend to use protective gloves.
High temperature of components
It is strongly recommended to use protective gloves due to the high temperatures that
may be reached during the operation.
18 OML46086 REV. I
Installation and start-up of KEOR HPE UPS 60÷160 kVA
Installation et démarrage de l'ASI KEOR HPE 60÷160 kVA
Installazione e avviamento KEOR HPE UPS 60÷160 kVA