Operating instructions

Protect 5.31/xxx-480-220-120 10 kVA - 120 kVA
Page 49 of 56 8000020680 BAL, en
12 Maintenance and Repairs
12.1 Diagnostic Functions
The comprehensive diagnostic functions implemented in the UPS not
only increase its operational reliability considerably, but also reduce
the time required for maintenance work and troubleshooting to a
minimum.
The UPS is equipped with the following diagnostic functions, some of
which are optional:
Self-diagnosis:
This is activated when the system is switched on. Internal auxiliary
programs monitor and signal faults, including those from the bus
system, the control PCBs or the sensors.
Data logger:
Specified measuring data and parameters from the REC, INV and
SBS are stored in the event of a fault. This data is read out and
evaluated as required.
12.2 Repairs
CAUTION:
Some repair work, e.g. replacing a fan fuse, can also be
performed when the system is in operation and live.
Always observe the safety regulations!
ATTENTION:
Do not switch the battery under load!