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Step 10. Remove the UPS battery pack by following the steps in "Replacing the internal battery pack"
on page 50.
The UPS can be removed and replaced.
Important: When UPS is not connected to the MBP, ensure that the MBP manual Bypass switch is locked.
Do not manipulate the switch unless the UPS is connected to the MBP.
Returning to normal operation
After performing maintenance on the UPS, follow these steps to put the UPS back into service and resume
normal operation.
Step 1.
Ensure that the locks are still in place, holding the MBP's UPS Input switch and UPS Bypass Input
switch (3Phase model only) in the 0 (off) position.
Important: To prevent exposure to hazardous voltage, the switches must remain in the 0 (off)
position during servicing and while the UPS is disconnected.
Step 2.
Connect the UPS to the MBP.
Step 3.
Remove the connection between the exposed wires, insert them through the terminal cover into
the terminal block, and tighten the set screws.Be sure to connect the UPS AC input cable (blue
conduit) and UPS output cable (red conduit) properly. See "HotSwap MBP connection" on
page 31 for details.
Step 4.
Verify that all wiring is correct. Then, push the conduits into the terminal block cover until they lock
in place.Attach the access cover to the terminal block cover.
Step 5.
On the MBP, unlock the Normal AC source switch
(3Phase model only), and set them to the 1 (on) position.
Step 6.
Wait for the UPS to start functioning.
The display panel illuminates and displays the standby symbol:
Step 7.
Press the power ( ) button to turn on the UPS.
The UPS goes into online mode:
Step 8.
Select Control ➙ Go to Bypass
The UPS goes into bypass mode:
54
6U Rack or Tower UPS RT8.0kVA and RT11.0VA and Maintenance Bypass Installation and User's Guide
and the Bypass AC source switch
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