DKC SMALLR1, Руководство пользователя

Страница: 129 / 147

127
6. Maintenance
6.1 Verifying UPS operation
It’s necessary to provide the following operations during the maintenance:
1. Check the operation of the UPS.
If the mains voltage is in allowable range, the UPS is working in utility mode. If the
mains voltage is out of the allowable range, the UPS operates in battery mode. In both
cases, this is not a fault.
2. Check the transition from one mode to another.
Disconnect power to simulate network failure. The UPS transfers into the battery mode,
then try to reconnect the power cable and make sure that the system returns to the
utility mode.
3. Check for errors
During the tests, described above, make sure that the operating mode on the display is
the same as the actual operating mode of the UPS.
6.2 UPS maintenance
Preventive maintenance of The UPS can ensure its reliability and long life time. The
following tests must be carried out every month:

Shutdown the UPS (see User’s manual);

Check the vent to make sure it is not blocked;

Check for dust on the UPS case, wipe with a dry cloth if necessary;

Check the insulation condition of the input, output, and battery cables for
damage;

Ensure that the UPS is well protected from moisture;

Start-
up UPS (see User’s manual);

Discharge UPS powered by the battery and other unimportant loads, until the
battery low voltage alarm sounds. During
the discharging, there shouldn’t be
any other alarm. If any other alarm is triggered, please contact local service