5
Warnings and security information
This device is a flameproof, weatherproof telephone especially designed for use in rough
industrial environments.
Please note the following warnings and security information:
– The installation and adjustment of the device must be carried out by qualified personnel
in accordance with the prescribed installation regulations taking the specified types of
protection into account.
– This apparatus is a Protective Class lI device and may only be connected to and operated
at the voltage it was designed for.
– Make sure the connections are in perfect order.
– Make sure the telephone housing, the connecting cable and the receiver cord are not
damaged. If the device is damaged, it may not be operated.
– While operating the device in commercial facilities, the accident prevention regulations
of the Employers' Liability Insurance Association regarding the use of electrical systems
and devices must be observed.
– The device may be operated solely under the stated ambient conditions. Unfavourable
ambient conditions can lead to damage of the device and thus present a potential danger
for the user.
– Regarding the assembly and installation please observe the respectively applicable
installations regulations.
Unfavourable ambient conditions include:
• Humidity of air too high (>75% rel., condensing)
• Moisture and dust (pay attention to the degree of protection)
• Flammable gases, vapours and solvents not covered by the type of protection for
the device
• Too high ambient temperatures (> +55°C)
• Too low ambient temperatures (< -20°C)
– During operation of the device the temperature must not exceed nor fall below the
prescribed range of ambient temperatures. It is not allowed to operate the device with
an additional cover.
– Make sure the wiring is voltage-free upon connecting or disconnecting the wires in the
terminal room.
– If electrical connections must be carried through in the hazardous area, the enclosure
must be opened and closed as follows:
• Remove voltage from the device.
• Loosen the fastening screws from the keypad insert
• Remove the keypad insert and unfasten the keypad cable
• Make the connections while the device is open
