Auerswald COMtrexx Business Notice D'utilisation page 23

Important Information
Plug the connecting cables of the PBX only into designated and expertly installed sockets.
Only use original accessories and original replacement parts.
Work on active, contact-hazardous parts is only permitted after creating a voltage-free state.
Working close to active parts is only permitted if these parts are voltage-free or are protected
against direct contact.
Pull out the PBX's power plug before instructing a qualified electrician to open the casing, to
install the expansion modules, or to switch or connect equipment. Also disconnect the device
from additional power sources (e. g. a UPS, if installed).
Wait for the discharge of any capacitor in the device after disconnecting it from the main
power supply. The electrolytic capacitors in the switch-mode power supply and the ringer
voltage circuitry can remain charged for a long time.
Do not touch the PBX or any devices connected to it during an electrical storm.
Divert electrostatic charges from yourself before touching the circuit boards with your hands
or any tools. To do this, touch a metal object, preferably earthed, such as the PBX's earthing
terminal, the 19" casing, or a computer casing.
Hire a qualified electrician to lay the cables within the building – including the cable to the
door terminal.
Safe Usage
Only operate the device when the casing is closed.
For some installation and maintenance work it is necessary to open the PBX while it is in
operation (qualified electrician only). Make sure that the PBX is never left unattended while
running with an open casing.
Only operate the device when it is securely fastened in a 19" rack.
Never cover the vent slots of the casing.
Protect the devices by installing overvoltage protection.
If possible, provide a separate electric circuit for the connection that supplies the PBX.
Location Characteristics
Only operate the PBX in closed, dry rooms.
Mount the PBX close to an earth wire (potential compensation bar of the house installation
or protective earth conductor). Connect the PBX's earth connection to the earth wire with a
²
connecting cable whose conductor diameter is at least 2.5 mm .
Do not expose the device to direct sunlight.
Avoid mechanical loads (e. g. vibrations).
Avoid the proximity of devices that generate electro-magnetic fields (e.g. radio sets,
professional radio equipment, amateur radio equipment, mobile phones, DECT systems,
etc).
Note the threshold values indicated in the technical data for voltage, electricity, performance,
ambient temperature, and moisture.
Protect the PBX from dirt, excessive dust, condensation caustic liquids and steam.
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COMtrexx Business - FW 1.4 - Instructions V02 06/2021