User Manual

3. Operation

3.1 First commissioning

At the beginning new NiMH rechargeable batteries do not deliver maximum power. Maximum power is

achieved only after a few recharging cycles.

Before charging rechargeable NiMH batteries, they must be completely discharged about once a

month. If this procedure is not followed, rechargeable batteries will not deliver anymore full power after

only a short time. Each communication device uses 3 rechargeable batteries. If one or more recharge-

able batteries are not fully charged, this will affect the reliability of the entire system. As it is not possible

to determine which one of the rechargeable batteries is in poor condition, the complete set must be

replaced. Proper care and handling helps controlling the number of rechargeable batteries in use.

The life of rechargeable batteries may vary as a result of daily recharging, natural ageing, and varying

operating conditions.

3.1.1 Recharging the NiMH rechargeable batteries

3.1.1.1 General

The rechargeable NiMH batteries in the device should only be charged with the charger supplied with

the system. Otherwise the rechargeable batteries may be damaged. The charger is neither watertight

nor dust-proof. Protect it against water, rain and dirt. The charger may only be used in rooms with nor-

mal relative air humidity and temperature. Do not cover up the charger.

Warning

z Never use battery chargers to charge non-rechargeable batteries.

Never open rechargeable batteries or throw them into fire. Do not open charger.

The repair is permitted only by the manufacturer.

z Never charge a rechargeable battery in areas with an explosion risk – an explosion may re-

sult. Charge rechargeable batteries only inside buildings or similar environments where no

dangerous concentrations of volatile vapors are present.

The three NiMH batteries are in the battery compartment of the CT-DECT Case (8). For charging they

have to be removed from the battery compartment.

a. Switch off the device CT-DECT Case (8).

b. Remove the cover from the battery compartment (Fig. 3).

c. Take the three NiMH batteries out the battery compartment. Charge the rechargeable batteries with

the charger.

e. After charging: When inserting the charged NiMH batteries notice the polarity. Close the battery

compartment.