MGE UPS Systems 3000 RT 2U User Manual

34007776EN/AB

- Page 19

5. Maintenance

Troubleshooting a UPS equipped with the HotSwap MBP module

5.2 Battery-module replacement

Safety recommendations

The battery can cause electrocution and high short-circuit currents. The following safety cautions are required
before servicing the battery components:

◗

Remove watches, rings, bracelets and all other metal objects from the hands and arms,

◗

Use tools with an insulated handle.

Battery-module removal

Indication

Diagnostic

Correction

The load is no longer supplied when
the rotary switch (49) on the HotSwap
MBP module is set to the Bypass
position.

◗

The protected devices are

connected to the UPS output
instead of to the HotSwap MBP
module.

◗

The AC-power cord is connected

to the UPS input instead of to the
HotSwap MBP module.

Check the wiring between the UPS
and the HotSwap MBP module (see
section 2.6).

The load is no longer supplied when
the rotary switch (49) on the HotSwap
MBP module is set to the Normal
position.

◗

The UPS is shut down.

◗

The wiring between the UPS and

the HotSwap MBP module is not
correct.

◗

Start the UPS.

◗

Check the wiring between the UPS

and the HotSwap MBP module (see
section 2.6).

The load is no longer supplied if AC-
power fails.

◗

The rotary switch (49) on the

HotSwap MBP module is set to the
Bypass position.

◗

The wiring between the UPS and

the HotSwap MBP module is not
correct.

◗

Set the rotary switch (49) on the

HotSwap MBP module to the
Normal position.

◗

Check the wiring between the UPS

and the HotSwap MBP module (see
section 2.6).

If a fault leads to UPS shutdown, press the ON/OFF button (27) to clear the fault.

A - Unscrew the left-hand side of the front
panel (two screws).
B - Remove the part.

C - Disconnect the battery block by
separating the two connectors (never pull on
the wires).