LEGRAND PREMIUS, User And Installation Manual

Page: 26 / 51

26
EN
PREMIUS
1-10 kVA
AA
The UPS is locked
3.5.5.13. Turn off the utility input breaker.
3.5.5.14. Your setting changes are now complete.
3.5.6 Troubleshooting when the UPS malfunctions due to unknown reasons:
3.5.6.1. If there is a serious abnormal condition the UPS will lock itself in the “OFF” position as shown in figure AB,
and an “abnormal” message will appear on the LCD.
3.5.6.1.1. After three seconds all messages will be locked except both Bypass messages (LED and LCD )
and Utility messages (LED and LCD ). If the Bypass or Utility is abnormal after the UPS is
locked, the related LED or will be extinguished and also the related LCD symbol or
will appear.
3.5.6.2. To release the UPS lock proceed as follows:
3.5.6.2.1. Check the recorded error messages.
3.5.6.2.2. Check the error messages in section 2.2 to help troubleshoot the problem. For further help consult your
local distributor.
3.5.6.2.3. Press the Off key for five seconds. A buzzer will sound twice.
3.5.6.2.4. Turn off the utility input breaker.
3.5.6.2.5. Even if the UPS lock problem is solved now, consult with your local distributor to make sure that the error
condition is resolved.
3.5.7 Shut off
3.5.7.1. Press the Off key for five seconds. The inverter output will be turned off and the output load will be
supplied by the Bypass loop. The LCD will display figure B.
3.5.7.2. Turn off the utility and bypass input breakers.
3.5.7.3. The UPS is now turned off completely.
3.5.8 Maintenance Bypass Mode
3.5.8.1. Maintenance Bypass Mode is for UPS maintenance only. Only authorized technicians are allowed to perform
the following procedures. If there is any damage during unauthorized execution of these procedures your
warranty will be void immediately.
3.5.8.1.1. Press the Off key for approximately five seconds. The LCD will display figure B, and the UPS output will
be in Bypass mode.
3.5.8.1.2. Remove the cover of the CAM Switch (Maintenance Bypass Switch), then turn on the CAM Switch to
“Bypass” mode. In the upper right- hand corner of the LCD a sign will appear.
3.5.8.1.3. Turn off the UPS Utility breaker as well as the Bypass Input Breaker. You may proceed with UPS
maintenance now.
Bypass
Utility
Bypass
Utility