Replacement Of The Ups Module In A Single Module System; Removing A Ups Module In A Single Module System (E.g. Dpa-50) - Uninterruptible Power Supplies PowerWAVE 9000DPA User Manual

4: Operation
4.3

Replacement of the UPS module in a single module system

WARNING: All the operations in this section must be performed by authorised and trained personnel. By
opening or removing the UPS modules and module covers you run risk of exposure to dangerous voltages!
WARNING: When removing a UPS module wait for at least 10 minutes after it has been disconnected in
order to allow the DC Capacitors to fully discharge.
WARNING: When the UPS module is removed from the cabinet always fit an appropriate blanking cover.
WARNING: Two persons are needed to pull out the module from the UPS Frame. The weight of a DPA 50,
40kW module is 60kg. Employ suitable lifting aids and safety platforms where possible.
If a UPS-module goes faulty in a single module system (e.g. DPA-50), the load will automatically transfer to the UPS
bypass supply (BYPASS mode) and the load is unprotected against a mains supply failure.

4.3.1 Removing a UPS Module in a single module system (e.g. DPA-50)

If your PowerWave 9000 consists of a single UPS power module then perform the following steps to shutdown and extract
the module:
1. Transfer the load to the maintenance bypass (see paragraph 4.2.1).
a) The load is now directly supplied by mains and is not protected
2. Simultaneously press the two ON/OFF buttons on the UPS control panel.
a) The LED display will give the following indications:
3. Open the fused battery isolator(s) associated with the module.
a) The UPS module is now totally shut-down.
4. Disconnect cables from connectors JD7 and remove the four screws on the front of the UPS module that secure it to
the cabinet frame.
5. Pull the UPS power module forwards until the rear connectors are disconnected. DO NOT FULLY EXTRACT THE
UNIT.
WARNING: Wait at least 2 minutes to allow the module's electrolytic capacitors time to discharge.
6. Wait two minutes then fully withdraw the UPS power module from the cabinet by pulling it forwards horizontally.
7. If you are not intending to replace the UPS module immediately, cover the UPS compartment opening with an
appropriate protection cover and secure with the four screws removed earlier.
50
LINE 2 BY PASS
LOAD
LINE 1 INVERTER
BATTERY
LED Colour
LINE 1 Green
LINE 2 Off
BY PASS Off
INVERTER Off
BATTERY Green
UPS471-02-00 PW9000DPA User Manual UK Dated 06/08/14