2
The FernTel 3 Z2 telephone is an explosionproof version of the weatherproof FernTel 3
telephone with all its features. The operating manual is still valid, with the addition of the
following items.
Operation
The FernTel 3 Z2 telephone is used as a stationary device in areas potentially endange-
red by an explosive gas or dust atmosphere.
Designed for Device Group II and Categories 3G and 3D, it may be operated within
zones 2 and 22.
The FernTel 3 Z2 telephone may only be operated in the analogue, public telephone
network and via analogue terminals of branch exchanges.
Commissioning
After having been connected to the telephone line, the telephone is operational.
Operating utilization position
The telephone may be mounted on a wall or used as a desk telephone.
Service
The telephone contains no serviceable parts.
Care and maintenance
The telephone is maintenance-free. Still, if the operating area is highly contaminated by
dust, fat, oil etc., the device should be cleaned from time to time.
The device may only be cleaned using a damp cloth in order to avoid electrostatic
charging.
Never use sharp objects for cleaning.
During maintenance, check accessible seals for function, e.g. regarding possible
damage or positioning. If the seals are damaged, operating the telephone is not allo-
wed. Damaged seals must be replaced.
Disposal
The complete device should be disposed of as electronic waste. When the device is
disassembled, plastics, metals and electronics components are to be disposed of
separately. In every single case the national requirements and regulations for waste
disposal must be observed.
Содержание FernTel 3 Z2
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