Carbonite Furnace HST User Manual

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Installation, Operation &
Maintenance Instructions
1200°C Split Tube furnaces
types HST & VST
This manual is for the guidance of operators of the above Carbolite products and
should be read before the furnace is connected to the electricity supply.
CONTENTS
Section page
1.0 Introduction 1
2.0 Installation 3
3.0 Operation 5
4.0 Maintenance 7
5.0 Repairs & Replacements 8
6.0 Fault Analysis 11
7.0 Circuit Diagrams 12
8.0 Fuses & Power Settings 15
9.0 Specifications 16
Manuals are supplied separately for the furnace controller
(and overtemperature controller when fitted).
Please read the controller manuals before operating the furnace.
1.0
MF13 – 3.31
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1 2 3 4 5 6 ... 16 17

Summary of Contents

Page 1 - Maintenance Instructions

Installation, Operation & Maintenance Instructions 1200°C Split Tube furnaces types HST & VST This manual is for the guidance of oper

Page 2 - NTRODUCTION

HST, VST Element Replacement Please see safety note 5.2 - please wear a face mask. HST, and VST with far hinge: Remove the three screws from e

Page 3 - INSTALLATION

HST, VST FAULT ANALYSIS A. Furnace Does Not Heat Up 1. The HEAT light is ON Æ The heating element has failed ÆCheck also that the SSR is w

Page 4

HST, VST CIRCUIT DIAGRAMS Safety Switches type A: a 2-pole Heater Switch is fitted directly in the element circuit in models up to 16A rating. Tw

Page 5 - OPERATION

HST, VST 7.4 3-phase without neutral (delta) 7.5 3-phase without neutral (star – e.g. 380 to 415V) e l e me n t (s)e l e m e n t (s) Supply ligh

Page 6

HST, VST 7.7 3-phase “universal” wiring Fuses F1 are always present in this wiring design. Fuses F2 could be absent in some circu

Page 7 - MAINTENANCE

HST, VST FUSES & POWER SETTINGS 8.1 Fuses F1-F3: Refer to the circuit diagrams. F1 Internal supply fuses Fitted if supply cable fitted. Fi

Page 9

SPECIFICATIONS Carbolite reserves the right to change specifications without notice. 9.1 Models Covered by this Manual MODEL Max. Temp. Max. Powe

Page 10

HST, VST INTRODUCTION 1.1 VST & HST models The VST range comprises split tube furnaces designed for use vertically, with several mounting

Page 11 - FAULT ANALYSIS

HST, VST INSTALLATION 2.1 Unpacking & Handling When unpacking or moving the furnace always lift it by its case or main body. Never lift it b

Page 12 - CIRCUIT DIAGRAMS

HST, VST 2.4 Electrical Connections Connection by a qualified electrician is recommended. The furnaces covered by this manual normally require

Page 13

HST, VST OPERATION The instructions for operating the temperature controller are given in a separate manual. If the furnace is fitted with a

Page 14

HST, VST Do not set too high a heating rate. Large diameter tubes are more susceptible to thermal shock than smaller. Tubes which extend beyond t

Page 15 - FUSES & POWER SETTINGS

HST, VST MAINTENANCE 4.1 General Maintenance No routine maintenance is required. The outer surfaces may be cleaned with a damp cloth. Do not all

Page 16 - MF13 – 3.31

HST, VST REPAIRS & REPLACEMENTS 5.1 Safety Warning – Disconnection from Supply Always ensure that the furnace is disconnected from the suppl

Page 17 - Keison Products

HST, VST 5.5 Thermocouple Replacement The coverings and guards which must be removed to gain access to the thermocouple depend on the model, and

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