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8.2 Maintenance
1. Maintenance of the UPS and battery replacement should
be performed by well trained expert personnel.
2. Batteries that have not been used for some time must be
charged up every three months at normal ambient
temperature and every two months if the ambient
temperature is high.
3. The three switches on the back, from top to bottom, are as
follows: Mains fuse-switch disconnector, manual service
bypass switch and output switch. Switching the mains
fuse-switch disconnector on causes mains voltage to be
supplied to each module of the PROTECT 1.M. Switching
the output switch on allows output voltage to be delivered
from the modules of the UPS to the loads. The
maintenance switch is used for UPS maintenance. The
UPS can only run in inverter operation if the manual
service bypass switch is switched off and the cover has
been fitted.
Note: Make sure that the PROTECT 1.M has been
changed over to bypass operation before you switch on
the manual service bypass switch. The load connection is
immediately supplied with voltage when the manual
service bypass switch is actuated. Only trained and
qualified personnel should operate this switch.