Wärtsilä JOVYSTAR COMPACT S
BAX 5452
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45 -
5.1.1 Problems during commissioning
This paragraph contains essential information should an alarm occur during the start-up procedure. If the problem
cannot be solved using this information, please contact our Technical Support Service.
1. No information in the display after closing the RCB
Check the phase sequence from the mains
Check whether the input voltage and frequency are within tolerances
Check rectifier fuses F1-F2-F3
2. If the UPS stops the start sequence after step number 1 and one or more alarms occur
Check displayed alarms and rectify the cause
Restart the UPS by closing the RCB
3. If the UPS does not start again after step number 2 and the alarm displays A15 – Bypass failure
Check whether the SBCB is closed
Check the fuses of the static bypass switch integrated in the UPS
Check the phase sequence of the bypass mains
Check whether the bypass voltage and frequency are within tolerances
4. If the UPS does not start again after step number 3 and the alarm displays A7 – BCB open
Check the BCB and the battery fuses
Inspect the connections between the auxiliary contact of the BCB and terminals Bac1-Bac2 of the
UPS
5.2 Decommissioning
Decommissioning the UPS leads directly to an interruption in the power supply to the consumer. The following
steps should therefore only be carried out if necessary/wished.
No.
Action
Panel display
UPS Status
1
Open OCB
A30 COMMON-ALARM
The supply of the load is interrupted.
LED #7 goes off.
2
Open BCB
A30 COMMON-ALARM
The battery is disconnected from the rectifier.
LED #4 flashes red.
3
Open SBCB
A30 COMMON-ALARM
The static Bypass is disconnected.
LED #2 goes off.
4
Open RCB
A30 COMMON-ALARM
Rectifier and inverter switched off.
All LEDs go off.
5
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End of switch off procedure.
