Eaton BladeUPS none, User Manual

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128 Eaton BladeUPS 5 kVA to 60 kVA (N+1) User’s Guide 164201649—Rev 14
Figure 89. Replacing the UPS Front Cover
77..1100 R Reeppllaacciinngg aa U UP PS S iinn aa P Paarraalllleell S Syysstteem m
You can replace a UPS in a parallel system without powering down the system or protected load.
NOTE DO NOT TURN OFF the system.
To replace a UPS in a parallel system:
1. Press any button on the front panel display of the UPS to be replaced to activate the menu options. Select
TURN UPS ON/OFF, TURN UPS OFF, and press the
button.
2. Confirm the selection. Press and hold the button for three seconds, until the UPS stops beeping.
The UPS removes power to the UPS output.
The output relays open, the UPS transfers to Standby mode, and the indicators turn off.
3. Disconnect the redundant signal and CAN Bridge Card cables from the UPS to be replaced. For the location
of the cables, see
Figure 67 .
4. Disconnect any other cables, such as REPO signals or serial communications.
5. Switch the UPS load connector circuit breaker to the OFF (O) position.
6. If optional EBMs are installed, switch the EBM battery breakers to the OFF (O) position and disconnect the
EBM cable from the UPS battery connector. For the location of the EBM battery breakers and the UPS
battery connector, see
Figure 39 .
7. Switch all UPS breakers (load connect breaker, input breaker, and battery breaker) to the OFF (O) position.
NOTE 1 The “Batteries Disconnected” alarm may appear on the UPS front panel. The alarm
resolves when the LCD is disconnected and may be ignored.
NOTE 2 The load connector breaker controls the load connector only, not the output power cord.
8. Disconnect the UPS from the BladeUPS Bar.
9. Remove the UPS front cover and the electronics module (see Figure 67 ):
Replacing a UPS in a Parallel System