FHF ExResistTel IP2, Руководство по эксплуатации

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Manual ExResistTel IP2 Page 19
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For repairing only original exchange parts are allowed, which have to be
changed professional. Other exchange parts may cause damages and the
warranty will be lost.
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The required general purpose has to be respected. The telephone must be
mounted on a closed rear panel in vertical mode.
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A magnetic field with disturbing frequencies can adjust a disturbance of the
acoustic quality. Pay attention to an acceptable installing place.
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For opening the telephone must be free of power.
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In opened state of the telephone dust must not attain into the telephone.
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For the impermeability of the housing necessary gasket respectively the
protective cover at the upper part must not be damaged during mounting or
dismounting.
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After repairing of the telephone for use in dust environment, the repaired
parts have to be tested again.
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The speech speed hopper of the handset consists out of a not electrical
conductive plastic material. It may be charging with high air speed
dangerously. A cleaning of the speech speed hopper with pressed air is not
allowed.
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Changes of the product for technical improvement are possible without
announcement before.
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The configuration conductor will be used for configuration by the
manufacturer exclusively and must not be connected. Programming by the
installer is not allowed.
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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
potential equalisation is necessary to support the explosion protection.