Newcon Optik LRB 20 000 - Manual (Page 21)

- discharged by setting the toggle switches to the DISCHARGE
and MAIN positions until the DISCHARGED light emitting diode flashes
on and off to indicate the discharged condition. Charge up the operating
voltage for 15 hours as directed under 16.3.1.
15.3.3. The battery that has been stored in the discharged
condition for over 3 months is subject to two processing cycles before
use.
Cycle 1
Charging for 24 hours with the toggle switches set to the
CHARGE and PREPARATORY positions on the charging device;
discharging with the toggle switches in the DISCHARGE and
PREPARATORY positions, until the LED labelled DISCHARGED
flashes.
Cycle 2
Charging as directed under 15.3.1.;
discharging with the toggle switches set to the DISCHARGE
and NAIN positions on the charging device, until flashing of the
DISCHARGED diode.
If the minimum discharging time is 5 hours, charge the battery
up to the operating voltage as directed in 15.3.1.
If the discharging time is between 5 and 3.5 hours, subject the
battery to another Cycle 2 as directed in 15.3.3, then charge it up to the
operating voltage as directed in 15.3.1.
With the discharging time under 3.5 hours, the battery is not to
be used.
15.3.4. The battery that has not been fully run down during the
operation is to be discharged before recharging. To completely
discharge the battery, set the toggle switches to the DISCHARGE and
MAIN positions on the charging device and wait until the LED labelled
DISCHARGED flashes on and off.
15.4. The in-service storage of the battery is permitted both in
the charged and discharged conditions.
The charged battery may be used without any preparatory
processing if it has been stored for less than 28 days.
If the battery has not been used on the expery of 28 days, it
should be discharged as directed under 15.3.4.
Before use, the battery is to be charged as directed under
15.3.1 through 15.3.3.
15.5. Before recharging the battery that has been used at
subzero temperatures, keep it at (20±5) ˚ C for at least 12 hours. See
the charging procedure under 15.3.4.
15.6. On charging the battery, do the following:
- deenergize the charging device;
- unscrew the cover of the battery section of the charging
device;
- remove the battery;
- screw the cover on.