40
8.2 Storage
Connect the UPS to the mains to charge the UPS for at least 8–10 hours before storing
the UPS.
Disconnect the UPS, turn it off and place in a clean and dry place.
Temperature, °С
Recharge necessity
Recharge Time
From 10 to 25
Once in 6 months
8-10 hours
From 25 to 40
Once in 3 months
8-10 hours
Table 3. Recommended battery charging frequency
Allowable storage temperature is in the range from 0 to +40 ° С.
8.3 Battery control
Batteries are the key component of the UPS. Its service life depends on the temperature,
as well as on the time of charging and discharging. High temperatures and over
discharge can shorten battery life.
1. Maintain ambient temperature in the range of 15 - 25°C.
2. In case of the UPS isn’t used for long time, it is recommended to fully charge the
batteries every 6 months.
3. Batteries should not be replaced individually.
4. Under normal working conditions, the battery life is about 2-4 years. If the batteries
were kept in a humid, dusty environment, or in low temperature conditions, their service
life will be reduced.
Algorithm of battery test are described below (battery performance may drop
dramatically as the end of its service life approaches, it is recommended to check it at
least once every 6 months):
1.
Connect the UPS to the mains and charge for 8-10 hours.
2.
Turn on the UPS, connect users and measure the power of their consumption.
3.
Disconnect the mains so that the UPS switches to battery mode and control the
discharge time before shutting down.
4.
Check whether the discharge time corresponds to the values given in figures 4 to 10.
If the discharge time decreases by more than 50%, replace the batteries.
The UPSs work with V.R.L.A. type lead-acid batteries, which are charged in the presence
of a mains supply.
Note:
1. Before performing battery operations, make sure the UPS is turned off and unplugged.
2. Remove rings, watches and other conductive materials before performing operations.
3. Use a tool with an insulated handle and do not put metal objects on batteries.
4. It is strictly forbidden to short circuit the positive and negative terminals of batteries.
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