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Chapter 7 Maintenance Bypass Panel Operations
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 4 and the Bypass AC source switch
•
the MBP are still locked to the " " position
Remove the previously installed safety wires links on each MBP power cables
•
After opening the UPS I/O terminal blocks cover, connect to UPS the MBP power cables,
•
and the MBP detection cable, see
Unlock the Normal AC source switch
•
MBP.
2. Set the Normal AC source switch and the Bypass AC source switch
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
6. Verify that the UPS is in Bypass mode by checking
7. Verify that the "
power is available on the MBP.
Important! Do not continue with the next step if the "
still off (the load will be lost)
8. Set the MBP manual Bypass switch to the "
the MBP turns off, indicating that the load is now powered by the UPS
9. Put the UPS in "normal mode", that is into on-line mode, see
back normal
10. Check that the UPS is in Online mode by checking
protected by the UPS
(*)
only in case of Bypass AC source option connected
6U Rack or Tower UPS RT8kVA and RT11kVA IUOMG
" button to start the UPS
"
Rear
panels, and
Figure 14 (item 6)
and the Bypass AC source switch
Display Functions
UPS display panel ( see item 3 )
of the MBP turns on, indicating that the UPS output
" position: the "
UPS display panel ( see item 1 )
for details
of the MBP to the " "
(*)
/
Control - Go to Bypass
"
"
Display Functions
/
Control
the load is now
of
(*)
of the
(*)
of the MBP is
of
/
Go
101
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