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Chapter 7 Maintenance Bypass Panel Operations
Disconnect the MBP conduits, and the MBP detection cable, see
•
(item 4)
On both MBP conduits just disconnected from the UPS, link the internal wires together (line
•
1 and line 2 wires linked to ground wire)
Replace the UPS
•
Hazardous voltage and lost load risk: do not manipulate the MBP manual Bypass switch
without UPS connected to the MBP power conduits.
Return to normal operation
1. Check that the new UPS is correctly connected to the MBP, as described below:
First check that the Normal AC source switch 3 of the MBP is still locked to the " "
•
position
Remove the previously installed safety wires links on both MBP conduits
•
After opening the UPS I/O terminal blocks cover, connect to UPS the MBP conduits, and
•
the MBP detection cable, see
Unlock the Normal AC source switch 3 of the MBP
•
2. Set the Normal AC source switch of the MBP to the " " position.
3. Verify that the UPS is correctly powered (UPS display panel illuminates).
4. Press the UPS "
5. Put the UPS in "internal Bypass mode", see
6U Rack or Tower UPS RT8kVA and RT11kVA IUOMG
for details
" button to start the UPS
Rear panels
and
Figure 13 (item 4)
Display Functions
Rear panels
and
for details
/
Control - Go to Bypass
Figure 13
95
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