FHF ExResistTel IP2, Operating Instructions Manual

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Manual ExResistTel IP2 Page 5
1
General
The telephone ExResistTel IP2 is an explosion proof version of the weatherproof
telephone ResistTel IP2 / IP152 with all its features. The operating manual is still
valid, with the addition of the following items.
1.1 Operation
The telephone type ExResistTel IP2 will be used as stationary telephone in areas,
which may be put to risk by explosive gas or dust atmosphere and make is necessary
to use devices of the device group II of the device class 2G and 2D. According to
regulations the general purpose of the telephone is hanging vertically on a wall or
hanging vertically on a mounting plate.
1.2 Description
The telephone type ExResistTel IP2 is realized according to the following type of
protection:
•
Type of ignition protection: Ex e [ib] mb IIC T4 Gb
•
Type of ignition protection: Ex tb [ib] IIIC T135°C Db
•
Degree of protection of enclosure: IP66
•
Working environment temperature range: -40 °C ≤ Tu ≤ +60 °C
The telephone type ExResistTel IP2 is designed for connecting to the Ethernet
according to IEEE802.3.
The telephone has to be included into the potential equalisation either with the
internal earth connecting bolt of the metal plate or with the external earth
connecting bolt at the housing (see examples of connection). The potential
equalisation must exist inside and outside of the explosion at risk area.
The telephone supports the connection of an intrinsically safe headset.
The headset is not part of this telephone. To connect the intrinsically safe headset
the plug mounted on the left side of the housing has to be replaced be an acceptable
explosion protected cable gland.