Storage And Maintenance - Njoy Ranger 30KR User Manual

Storage and Maintenance

5
5.1 Storage
Before storing, charge the UPS at least 7 hours. Store the UPS covered
and upright in a cool, dry location. During storage, recharge the battery in
accordance with the following table:
Storage Temperature
-25°C - 40°C
40°C - 45°C
5.2 Maintenance
The UPS system operates with hazardous voltages. Repairs may be
carried out only by qualified maintenance personnel.
Even after the unit is disconnected from the mains, components
inside the UPS system are still connected to the battery packs which are
potentially dangerous.
Before carrying out any kind of service and/or maintenance,
disconnect the batteries and verify that no current is present and no
hazardous voltage exists in the terminals of high capability capacitor such
as BUS-capacitors.
Only persons are adequately familiar with batteries and with the
required precautionary measures may replace batteries and supervise
operations. Unauthorized persons must be kept well away from the
batteries.
Verify that no voltage between the battery terminals and the ground
is present before maintenance or repair. In this product, the battery circuit
is not isolated from the input voltage. Hazardous voltages may occur
between the battery terminals and the grounding/earthing.
Batteries may cause electric shock and have a high short-circuit
current. Please remove all wristwatches, rings and other conductive
objects before maintenance or repair, and only use tools with insulated
grips and handles for maintaining or repairing.
68
Recharge Frequency
Every 3 months
Every 2 months
Charging Duration
1-2 hours
1-2 hours