WEGER WALTER GMBH DIWER EVO DP80 Series, Инструкция по установке и эксплуатации

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Installation and Operating Manual Page
8
Printed: 02/2015
Already installed units must be upgraded to the relevant ATEX class. The following
components might be affected by such an upgrade:
- Electronic components (lamps, electric motors, switches, etc.) must be approved for
operation under ATEX conditions and labelled accordingly.
- The cabling of ATEX units must conform to the relevant standards. In particular, proper
potential equalization must be guaranteed.
- ATEX units for outdoor installation must be equipped with a suitable lightning
protection system and all metal parts of the construction (ladders, work platforms,
etc.) must be connected to a ground conductor.
- Depending on the processed air composition, one must take into account that
temperatures in the ducting of ATEX units might increase to 110 °C, which might be
sufficient to cause spontaneous ignition.
- In ATEX units for indoor installation, all electrically conductive parts must be properly
earthed (potential equalization) in order to prevent ignition by lightning strikes.
Possible ignition sources:
- Mechanically produced sparks caused by incorrectly operated fans
- Static electricity (caused by cleaning with conventional cloth)
- Hot surfaces
- Electrostatic charge of persons
- Lightning strikes
- Tools that do not conform to EN 1127-1
- Wiring
Non-compliance with the instructions below or with the applicable national and
international safety regulations might result in serious or even fatal injury and damage to
property.
Do not commission ATEX units until the following requirements are met:
- Conditions of use in accordance with the purpose for which the unit is intended
- No substances nearby that are prone to spontaneous combustion e.g. pyrophoric
substances under EN 1127
- Constant and adequate ventilation of the installation site (mechanical equipment
room) in the case of ATEX units without a specified exterior Ex zone so that
unavoidable leakage to the exterior of the unit does not result in an explosive
atmosphere