Changing The Batteries; Handling Of Batteries; Switching The Device On And Off - Kompernass KH 2283 Instruction Manual

Changing the batteries

The device requires a 3V lithium battery type CR2032, which is
already preinstalled. If the display remains blank after it has been
switched on the batteries are depleted. To change the batteries
open the battery compartment on the rear panel of the device.
> For this unscrew both of the screws
battery compartment cover 2).
> Before removing the old batteries please memorize their
position in the compartment by means of the inscription.
The plus sign is visible from the outside.
> Remove the batteries and replace them with fresh ones of
the same type. Thereby the plus sign must still be visible
from the outside otherwise the device will not function and
could be damaged.
> Place the battery compartment cover
it down firmly.

Handling of batteries

Leaking batteries can cause damage to the calculator trainer.
> If you do not intend to use the calculator trainer for a long
period of time then remove the batteries.
> When a battery has leaked put on protective gloves and
clean the battery compartment with a dry cloth.
> Do not attempt to recharge the batteries.

Switching the device on and off

> To switch the device on press the
the first calculation task appears.
> To switch the device off press the
; and remove the
2) back on and screw
button e. In the display q
button e again.
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