GESTRA NRG 17-11 Installation Instructions Manual

Level electrode
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GESTRA Steam Systems
NRG 16-11
EN
English
NRG 17-11
NRG 19-11
NRG 111-11
Installation Instructions 818578-05
Level Electrode
NRG 16-11, NRG 17-11, NRG 19-11,
NRG 111-11
1

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Summarization of Contents

Important Safety and Usage Notes
Intended Use and Restrictions
Specifies correct application of level electrodes and restrictions in explosion risk areas.
Personnel Competence Requirements
Emphasizes installation and maintenance by qualified personnel with adequate training.
Operational Hazards and Warnings
Warns about potential hazards like escaping steam, hot surfaces, and severe scalding during operation.
Regulatory Compliance (PED & ATEX)
Details fulfillment of PED requirements and ATEX applicability for explosive atmospheres.
Product Explanations
Scope of Supply and Description
Lists components included and explains the function of level electrodes for detecting minimum liquid level.
Product Explanations
System Operation and Design
Describes the conductive measuring principle, system components, and design specifications of the electrodes.
Technical Data
NRG 16-11/17-11/19-11 Specifications
Covers type approval, service pressure, connections, materials, electrical, and protection specs.
Technical Data
NRG 111-11 Specifications
Details type approval, service pressure, materials, pH, cell constant, and electrical specs for NRG 111-11.
Technical Data
Name Plate and Equipment Markings
Shows examples of nameplate information and equipment designations for NRG models.
Technical Data
NRG 16-11/17-11/19-11 Dimensions
Provides dimensional drawings for NRG 16-11 (with extension) and NRG 17-11/19-11 (without extension).
Technical Data
NRG 16-11/17-11/19-11 Dimensions
Shows detailed dimensions for NRG 17-11/19-11 with optional terminal box and measuring surface extension.
Technical Data
NRG 111-11 Dimensions
Displays dimensional drawing for NRG 111-11 with measuring surface extension and warning about steam escape.
Product Design Details
Component Assembly and Installation Figures
Illustrates key design components and assembly steps using numbered figures.
Functional Elements Overview
NRG 16-11/17-11/19-11 Terminal Box Components
Shows an exploded view of the terminal box components for NRG 16-11, 17-11, and 19-11.
Functional Elements Overview
NRG 111-11 Terminal Box and Wiring
Shows terminal box cover removal and wiring diagram for NRG 111-11 and optional configurations.
Component Identification
Key to Design and Functional Elements
Lists and defines all numbered parts used in the design and functional elements figures.
Installation Procedures
Electrode Assembly and Mounting Steps
Details electrode tip assembly, length determination, mounting, and tightening procedures.
Critical Installation Precautions
Provides crucial notes on machining, gasket usage, insulation, spacing, and specific flange requirements.
Installation Procedures
Installation Guidance and Required Tools
Offers guidance on installation notes, protection tubes, standpipe approval, and lists necessary tools.
Installation Examples
NRG 16-11/17-11/19-11 Installation Diagrams
Shows installation diagrams for NRG 16-11/17-11/19-11 in vertical and angled positions.
Installation Examples
NRG 111-11 Installation Diagrams
Presents installation diagrams for NRG 111-11 in vertical and angled configurations.
Installation Examples
Key to Installation Diagrams
Defines the numbered components and fittings used in the installation examples.
Electrical Connection Guide
Connecting NRG 16-11/17-11/19-11
Details electrical connection via a four-pole connector, including cable requirements and connection steps.
Connecting NRG 111-11
Explains electrical connection via a terminal box made from aluminium, with steps for wire connection.
Electrical Connection Guide
Wiring Diagrams and Figures
Provides wiring diagrams for NRS 1-7 and NRG 1...-1X, including specific configurations for France.
Electrical Connection Guide
Voltage Table for Status Check
Offers a voltage table for checking electrode status (submerged/exposed) or malfunctions.
Commissioning Procedures
Outlines steps for checking wiring and applying mains voltage for commissioning.
Operation and Troubleshooting
Low-Level Limiter Operation
Describes operation with controller NRS 1-7 in various plant types and regulations.
Troubleshooting Common Faults
Provides a table of common faults and their remedies for level electrode issues.
Decommissioning and Disposal
Safety Precautions for Removal
Warns about severe burns and scalds, emphasizing depressurization and cooling before removal.
Waste Disposal Guidelines
Advises on proper disposal of the level electrode and its components according to regulations.
Annex Information
Declaration of Conformity Details
Informs users where to find conformity declarations and contact information.

Table of Contents