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8. Storage and Maintenance
8-1. 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
Recharge Frequency
Charging Duration
-25°C - 40°C
Every 3 months
1-2 hours
40°C - 45°C
Every 2 months
1-2 hours
8-2. Maintenance
The UPS system operates with hazardous voltages. Repairs may be carried out only by qualified
maintenance personnel.
Before performaning 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 qualified maintenance personnel 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.
When replacing the batteries, install the same number and same type of batteries.
Do not attempt to dispose of batteries by burning them. This could cause battery explosion. The
batteries must be deposed of according to local environmental regulations.
Do not open or destroy batteries. Escaping electrolyte can cause injury to the skin and eyes. It may
be toxic.
Please replace the fuse only with the same type and amperage in order to avoid fire hazards.
Do not disassemble the UPS system.
