GESTRA NRS 1-9, Installation Instructions Manual

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Scope of supply
NRS 19
Water level controller/water level limiter (plug-in unit for installation in control cabinets)
Installation manual
Important Notes
Danger
The terminal strip of the NRS -8 is live during operation. This presents the danger
of electric shock!
Cut off power supply before attaching or detaching the housing lid and the terminal
strips of the equipment.
Usage for the intended purpose
Use level switch NRS -9 only in conjunction with level electrode NRG 6-6 for level control (high level
alarm).
Safety note
The equipment must only be installed and commissioned by qualified and competent staff.
Retrofitting and maintenance work must only be performed by qualified staff who – through adequate
training – have achieved a recognised level of competence.
ATEX (Atmosphère Explosible)
The equipment constitutes a simple item of electrical equipment as defined in DIN EN 5000 section
5.4. According to the European Directive ATEX 94/9/EC the equipment may only be used in potentially
explosive atmosphers if it is provided with approved Zener barriers.
Applicable in Ex zones , (999/9/EC). The equipment does not bear an EX marking. The suitability
of the Zener barriers is certified in a separate document.
Attention
The name plate indicates the technical specification of the equipment.
Do not commission or operate equipment without a name plate.
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Explanatory Notes 