Maintenance Operations - Eaton 9390 Installation And Operation Manual

4.4

Maintenance Operations

Eaton 9390 UPS, 9395 UPS, and 9395 SSBM Sync Control Installation and Operation Manual
4. Press the LOAD SYNC ENABLE pushbutton to enable the automatic
synchronization control. The pushbutton illuminates when the synchronization
control is enabled.
NOTE If both systems are operating normally, the ACTIVE MASTER SOURCE green indicator illuminates for the
selected master synchronization source.
NOTE If one system is in bypass, the ACTIVE MASTER SOURCE green indicator illuminates for the system in
bypass, regardless of the position of the PREFERRED SOURCE SELECTOR switch.
NOTE If one or both of the systems lose their bypass sources or if the bypass sources are no longer in
synchronization, the yellow SYNCHRONIZED TO LOAD indicator illuminates for the non-master system.
5. To disable the automatic synchronization control, press the LOAD SYNC
ENABLE pushbutton and verify that the indicators, including the LOAD SYNC
ENABLE pushbutton, are off.
Maintenance should be scheduled on a periodic basis, recommended not to exceed
one year. More frequent intervals are recommended if the equipment Is subjected to
highly repetitive operations.
This UPS contains LETHAL VOLTAGES. All repairs and service should be performed by AUTHORIZED
SERVICE PERSONNEL ONLY. There are NO USER SERVICEABLE PARTS inside the UPS.
Periodic inspections of the Eaton Sync Control should be made to determine if
components, wiring, and connections exhibit evidence of overheating or damage.
Refer to the maintenance chapter in the applicable Eaton 9390 UPS, Eaton 9395 UPS or 9395 SSBM Installation
and Operation Manual listed in paragraph 1.3 before beginning maintenance or repairs.
D A N G E R
C A U T I O N
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P-164000052 Rev 2 www.eaton.com/powerquality
OPERATING INSTRUCTIONS
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