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KEOR T
Operating Manual
9.10. Maintenance Bypass Active Alarm
If Maintenance Bypass circuit breaker is brought to “ON” position, this alarm appears. Refer to Section 7.5 to
check if Maintenance Bypass decommissioning procedure has been respected.
9.11. Battery test failure Alarm
UPS tests the batteries periodically. In case the batteries failed in the battery test, this alarm appears.
Perform the test again when the batteries have been charged for min. 10 hours and verify the battery circuit
breaker is at “ON” position.
If the alarm continues, contact to Legrand UPS Technical Service.
9.12. Input Voltage Failure Alarms
If the input voltage is not in specied limits, these alarms appear and In this case UPS operates in Battery
Operation mode. As soon as the mains voltage returns to specied limits, the alarms will disappear.
9.13. Inverter Temperature High/ Rectier Temperature High Alarms
If temperature of the inverter or rectier block rises, these alarms appear. The reasons can be: overload, fan
failure, high ambient temperature, and dusty environment. If fans failed or any other problem is identied,
contact Legrand UPS Technical Service.
If any other alarm occurs or if the above alarms cannot be cleared, contact Legrand UPS Technical Service.
Please prepare the following information before you contact Legrand UPS Technical Service:
• Ensure you read and apply troubleshooting procedure carefully
• UPS Model Type
• Serial Number
• Firmware version
• Date of failure or problem
• Date of commissioning
• Symptoms of failure or problem
• Customer site address and contact information
• Service contract references if any
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