Uninterruptible Power Supplies PowerWAVE 8000DPA RI, User Manual

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4: Operation
4-16
UPS338-01-00 PowerWAVE 8000-RI DPA User Manual Dated 5 April 2013
4.7 Replacing a UPS Module in a REDUNDANT Multi-Module System
If a UPS-module is faulty in a redundant parallel system, the load will continue to be protected by the
remaining modules which will continue to operate in the
ON-LINE mode ( INVERTER mode). Under these
circumstances the faulty UPS module may be replaced without having to transfer the load to bypass.
4.7.1 Extracting the UPS Module
1. Identify the faulty Module with the Alarm condition and RESET the Alarm. The audible noise will stop. If
the Alarm conditions persists ( ALARM LED is red) there is a fault in the UPS-Module.
2. Verify that load is supplied by the inverter of the other modules by checking the LCD indication LOAD
PROTECTED .
3. On the UPS module to be replace, simultaneously press the two ON/OFF buttons on the UPS control
panel.
a) The LED display will give the following indications:
4. Open the fused battery isolator for the UPS module in the UPS cabinet or in the external battery cabinet/
rack, as applicable.
5. The UPS module is now totally shut-down.
6. Remove the four screws on the front of the UPS module that are fixing it to the cabinet / UPS-frame.
7. Using the two black handles, pull the UPS module forwards until the rear connectors are disconnected.
DO NOT FULLY EXTRACT THE UNIT.
8. After waiting two minutes, fully withdraw the UPS-Module from the cabinet / UPS-frame by pulling it
horizontally.
9. If you are not intending to replace the UPS module immediately, cover the UPS compartment opening
with an appropriate protection cover and secure with four screws.
WARNING:
All the operations in this section must be performed by authorised and trained
personnel.
WARNING:
A UPS module weigh up to 22kg, therefore it requires at least 2 persons to handle
the module.
Due to its weight, if the UPS module is handled inappropriately it might cause serious injury or
damage. We recommend that the modules are handled by two persons at all times.
Employ suitable lifting aids and safety platforms where possible.
WARNING:
Wait at least 2 minutes to allow the module’s electrolytic capacitors time to
discharge.
LINE 1
LINE 2 BY PASS
INVERTER
BATTERY
LOAD
LED Colour
LINE 1 Green
LINE 2 Off
BY PASS Off
INVERTER Off
BATTERY Green