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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 pro-
tection 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
•
When the work is done, plug the keypad back on, and place the keypad
insert back on the lower part of the device.
Make sure the seal is correctly positioned and in perfect working order. Then tighten the
fastening screws in a diagonal pattern.
– Only blind plugs and cable glands as prescribed by the manufacturer may be used.
Should these points not be observed, the explosion protection of the device cannot be
guaranteed. The device then poses a potential threat to the user's life and can cause the
ignition of an explosive atmosphere.
CE symbol
The FernTel IP Z2 / Z22 fulfils the demands of the ATEX directive 94/9/EC,
the EMC Directive 2004/108/EC, the Low Voltage Directive 2006/95/EC and
the R&TTE Directive 1999/5/EC.
The CE symbol confirms the conformity of the device with the above mentioned
Directives.
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