Cleaning After Contact With Liquid; Care Instructions For The Batteries - Funkwerk FT4 Operating Manual

140 Service and cleaning

Cleaning after contact with liquid

Cleaning after contact with liquid
Should your radio set have come into contact with a large amount of liquid, and you
suspect that liquid may have seeped in, e.g. because the battery was not completely
locked or the antenna was not screwed on, proceed as follows:

Switch off the radio set.

Remove the battery.

Carefully remove water or dirt.

Remove the special screw-on FT4 side connector cover.

Hold the radio set in a horizontal position with the battery compartment open and
facing downward so the liquid can flow out.

Hold the radio set in a vertical position. While doing so, tilt the radio set slightly to
the front and the rear while shaking it slightly.

Dab all parts dry. After that, store the radio set in a dry and warm place with the
battery compartment open and the keys facing downward for at least 72 hours. Do
not place the unit in a microwave oven or an oven.
After the radio set has completely dried, you can put it back into operation in many
cases. Check all functions during an extended test operation.

Care instructions for the batteries

The battery capacity remains available for a long time if you consider the following
instructions.

Use only a system-compatible charger for charging the batteries.

Charge the battery immediately as soon as it is exhausted.

Charge the battery after switching off the radio set.

If you anticipate not using the radio set for several days, disconnect the battery
from the unit and charge it. This will prevent the battery from self-discharging.

It is detrimental to the service life of the battery if the unit is heated to high tempe-
ratures during storage or operation. Never expose the battery to direct sunlight or
other heat sources for an extended period of time.