User's Manual

Ear moulds and Earphones

Obstructed sound channels of ear moulds and earphones cause poor reception. For regular cleaning

(after every use) we recommend the use of special antiseptic cleaning tissues (see item 6), an

appropriate cleaning spray, or soft clean cloths and pure water with some dishwashing liquid. Do not

use solvents for cleaning purposes.

For a basic cleaning of ear moulds we recommend a cleaning bath once a week (effervescent tablets;

e.g. Detax Smarttabs).

5.3 Changing the protective cover of the gooseneck microphone

Check the protective foam cover periodically for pollution, wear and deformation and replace it, if

necessary. It can be easily pulled off the microphone.

5.4 Changing the battery of the optional CT-Wireless-PTT

1. Open the battery compartment on the back of

the CT-Wireless-PTT using the opening tool

TKZ: 4008011 by a swift left turn.

2. Cautiously remove the circuit board from the

housing. Change the battery minding correct

polarity; lettering must be visible. Use 3-V

batteries type CR2032 only

ATENTION

Mind correct polarity!

ATENTION

Batteries may not be disposed off in the

domestic waste!

3. When closing the CT-Wireless-PTT put a new

sealing ring under the lid, if necessary.

Place the lid notches into the guides in the

housing and lock the lid with a right turn.

Make sure lid and housing have a tight fit.

circuit board

touch-lamina

sealing ring

lid