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Industrial Heat Tracing
Installation and Maintenance Manual for
Self-Regulating and Power-Limiting
Heating Cable Systems

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Table of Contents
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Summarization of Contents

General Information
1.1 Use of the Manual
Defines the scope and purpose of the installation and maintenance manual for heat-tracing systems.
1.2 Safety Guidelines
Outlines critical safety precautions and warnings essential for the correct installation and operation of heat-tracing systems.
1.3 Electrical Codes
References applicable national and local electrical codes that govern heat-tracing system installations.
1.4 Warranty and Approvals
Provides details on warranty coverage and product approvals for nVent RAYCHEM heating cables and components.
1.5 General Installation Notes
Presents crucial preliminary notes and best practices for installers to follow before commencing installation work.
Heating Cable Installation
3.1 Heating Cable Storage
Specifies the correct environmental conditions and handling for storing heating cable to maintain its integrity.
3.2 Pre-Installation Checks
Lists mandatory checks for received materials and the piping system prior to the installation of heating cables.
3.3 Installation
Details the step-by-step procedures and techniques for the physical installation of heating cables onto pipes.
Heating Cable Components
4.1 General Component Information
Introduces the range of RAYCHEM components and offers essential tips for their installation with heating cables.
Thermal Insulation
6.1 Pre-Insulation Checks
Emphasizes the importance of visual checks and insulation resistance testing before applying thermal insulation.
6.2 Insulation Installation Hints
Provides practical advice for the correct installation of thermal insulation to safeguard the heating cable system.
6.3 Marking
Describes the required labeling procedures for insulated pipes to indicate the presence of electric tracing.
6.4 Post-Insulation Testing
Details the necessity and methodology of post-insulation resistance testing to confirm the cable's condition.
Power Supply and Electrical Protection
7.1 Voltage Rating
Guides users on verifying the source voltage compatibility with the heating cable's rated voltage for safe operation.
7.2 Electrical Loading
Explains the selection process for overcurrent devices based on heating cable type, voltage, and circuit length.
7.3 Ground-Fault Protection
Highlights the mandatory requirement and methods for implementing ground-fault protection for system safety.
Commissioning and Preventive Maintenance
8.1 Tests
Outlines the essential tests required for system commissioning and regular preventive maintenance.
8.2 Preventive Maintenance
Details the recommended maintenance schedules, procedures, and repair guidelines for ensuring system reliability.
Test Procedures
9.1 Visual Inspection
Provides detailed steps for visually inspecting the heat-tracing system components and installation.
9.2 Insulation Resistance (Megger) Test
Explains the procedure, required equipment, and frequency for performing insulation resistance testing.
9.3 Power Check
Details the process for measuring and calculating heating cable power output to ensure it meets design specifications.
9.4 Fault Location Tests
Describes various methods, including ratio and capacitance tests, for accurately locating faults within the heating cable.
Troubleshooting Guide
Troubleshooting Guide Overview
Presents common symptoms, probable causes, and references for diagnosing issues in heat-tracing systems.
Installation and Inspection Records
Installation and Inspection Record Fields
Lists the necessary fields for recording heat-tracing system installation and inspection data.

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