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ENGLISH
Remark
㸸
1.
Generally speaking, don't turn off the UPS so the battery keeps charging.
2.
When AC fails the UPS will turn to battery mode. Please save important
documents in time.
8.0 Maintenance
8.1 Preventative Maintenance
Preventive Maintenance ensures the longer Service life of UPS. Please check the
following steps every month
㸸
1.
Turn off the UPS;
2.
Make sure the air grid is not blocked;
3.
Make sure that the UPS surface is not covered by dust;
4.
Check whether the input and output connectors are firmly connected
5.
Make sure that the UPS is not affected with damp;
6.
Turn on the UPS;
7.
Let the UPS work in battery mode for about 5 minutes. If there is no other alarm
in this period, then the UPS is working normal; if there is another alarm message,
please contact the local dealer for help.
8.2 Battery Maintenance
The UPS contains a sealed lead-acid maintenance-free battery (batteries). Bad
environmental conditions, to high discharge frequency, to high temperature, etc will
dramatically reduce the battery life. The battery life will also reduce even if it is not
used. It is suggested to discharge the battery once every 3 months when AC is
normal. The following steps explains how to check the battery. When the battery is
near the end of its life, the battery will end in bad performance. So, please remember
the following steps of checking and maintenance:
1.
Connect the UPS to AC and turn on the UPS, charge the battery for at least 10
hours. Do not attach any load to the UPS while charging.
2.
Connect any load to the UPS (UPS and Surge outputs) and remove the input
plug from the UPS to simulate AC failure. The battery of the UPS will discharge
until the UPS turns off automatically. Please record the connected load and
discharge time for a later check.
3.
The battery service life is about 2 to 3 years in normal conditions. But in such
condition as: high temperature or high discharge frequency, the battery service
life will reduce to about 0.5 to 1 year.
4.
When the discharge time is 80% of the initial discharge time, the performance of
the battery will be weakened faster and accordingly the checking frequency of
the battery should be changed to every month.
Summary of Contents for EW3940
Page 1: ...EW3940 41 42 43 Line Interactive UPS with AVR...
Page 2: ...EW3940 41 42 43 Line Interactive UPS with AVR...
Page 13: ...EW3940 41 42 43 Interakt v Vonali UPS AVR funkci val...
Page 26: ...EW3940 41 42 43 Line Interactive UPS met AVR...
Page 39: ...EW3940 41 42 43 Line Interactive UPS con AVR...
Page 52: ...EW3940 41 42 43 Sai Interactivo con AVR...
Page 65: ...EW3940 41 42 43 UPS de linha interactive com AVR...
Page 77: ...EW3940 4142 43 Onduleur Interactif avec AVR...
Page 84: ...8 FRAN AIS 6 0 DEL UPS hors ligne Model EW3940 Model EW3941 EW3942 EW3943...
Page 91: ...EW3940 41 42 43 Line Interactive USV mit automatischem Spannungsregler...
Page 104: ...EW3940 41 42 43 Zasilacz UPS typu line interactive 650 VA z wtyczk Schuko...
Page 119: ......
Page 120: ......
