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Chapter 10 UPS maintenance
Replacing the UPS
The HotSwap MBP allows you to service or replace the UPS without interrupting the
connected loads.
If the MBP is activated the protected load is directly fed by utility power. This means that the
load is not protected by the UPS in case of utility power failure. Therefore it is recommended to
plan for a maintenance window for replacing the UPS.
Removing the UPS
Step 1.
Press any button to activate the menu options.Then, select
Step 2.
Verify that the UPS is in Bypass mode by checking its display panel. The Bypass LED is on:
.
Step 3.
Move the manual rotary switch on the MBP to the
The
directly from utility power or, if so wired, by the Bypass AC source.
Step 4.
Pull out the yellow tab on the MBP rotary switch and install a lock to ensure that the switch
remains in the
Step 5.
Switch the MBP's UPS Input switch and UPS Bypass Input switch (3Phase model only) to
the
(off) position.Install locks to ensure that they remain in the
Important: To prevent exposure to hazardous voltage, the switches must remain in the
6U Rack or Tower UPS RT8kVA and RT11kVA IUOMG
red light on the MBP turns on, indicating that the load is powered
position, to prevent the load from losing power during servicing.
(off) position during servicing and while the UPS is disconnected.
Control
→ Bypass.
position.
(off) position.
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