Preparing The Ups For Maintenance In The Manual Maintenance Bypass Mode; Replacing A Power Module Or Adding New Modules - LEGRAND Archimod Maintenance Manual

1. Maintenance
1.5 Preparing the UPS for maintenance in the manual maintenance bypass mode.
If the Hot-Swap replacement procedure of the power modules is not applicable (paragraph 1.4), the modules can still be
replaced by putting the UPS in maintenance bypass. This mode is also necessary if ever it is requested to service or replace
parts such as the control boards, backplane, etc.
ATTENTION:
when working in the forced bypass and maintenance mode the load is not protected
1.5.1 Manual bypass mode
To put the UPS in the maintenance bypass mode proceed as follows.
1. Open the door of the ARCHIMOD® UPS;
2. Follow the guided procedure for "entering maintenance".
To do this, navigate inside the Tools ➝ Bypass ➝ Entering maint. menu and follow the instructions displayed.
3. If you wish to continue with UPS maintenance press the ENTER button. After having pressed ENTER the load is
powered by the unit's forced bypass. When the equipment is in the forced bypass mode, the backlit status indicator
on the front panel starts blinking quickly and is coloured orange. Likewise, the LEDs on the various power modules
also blink quickly.
4. Close the maintenance bypass disconnector switch.
5. Open the output disconnector switch.
6. Turn the UPS off keeping the ON/OFF button pressed for more than 2 seconds.
7. Open the mains input disconnector switch;
8. Open all the battery disconnectors of the UPS and of the ARCHIMOD® BATTERY units (if installed);
ATTENTION:
there are dangerous live parts inside the equipment due to the internal batteries even if all the battery fuse holder
disconnectors are opened. To remove the battery induced voltage, remove at least 1 battery box from each battery
shelf ( which will interrupt the battery string series).
1.5.2 Replacing a power module or adding new modules
1. Make sure that the maintenance bypass procedure described in the previous paragraphs has been scrupulously
applied.
2. Extract the module after having loosened the two securing screws.
WARNING:
There are two holes on the cover of the power module through which it is possible to see two LEDs; if they are on it
means there is dangerous voltage on the rear connector.
MAKE ABSOLUTELY CERTAIN THAT THESE LEDs ARE OFF before handling the module. If they are on wait until they
have turned off.
3. Check that on the new power module the two LEDs that can be seen through the two holes on the cover are off. If they
are on wait until they have turned off.
4. Put the new power module in place of the old one or in one of the available compartments if you wish to increase UPS
power.
5. Secure the power module to the unit's frame with the 2 screws supplied, without tightening too much; use only
M4x20mm Allen screws;
Note: if the power module is not fixed with the screws prescribed, the switching-on of all the tunnel modules, controlled by the
control board, is inhibited.
The procedure described needs no further manual settings via the operator panel; the UPS automatically recognises the
new power module and reconfigures automatically.
As far as identification of the modules is concerned, bear in mind that the first module at the top left is always identified
with zero. The adjacent module is, therefore, number 1 and the others follow in sequence.
6
®