Table of Contents
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Installation, Operation &
Maintenance Instructions
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.
Section
1.0
2.0
3.0
4.0
5.0
6.0
7.0
8.0
9.0
Manuals are supplied separately for the furnace controller
Please read the controller manuals before operating the furnace.
1.0
Combustion Tube Furnaces
CFM models
C
ONTENTS
(and overtemperature controller when fitted).
page
1
3
4
6
8
12
13
13
16
MF10
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Summary of Contents for Carbolite CFM MODELS
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Page 1: Table Of Contents
Installation, Operation & Maintenance Instructions Combustion Tube Furnaces CFM models 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. ONTENTS Section page Symbols & Warnings... -
Page 2: Symbols & Warnings
& W YMBOLS ARNINGS Switches and Lights Supply Light: when the furnace is connected to the electrical supply the light in the adjacent switch glows Heat Switch: the switch disconnects power to the heating elements; unless this switch is off there is a danger of electric shock when inserting objects into the furnace Heat Light: the adjacent light glows or flashes to indicate that power is being supplied to the elements... -
Page 3: Installation
NSTALLATION Unpacking & Handling When unpacking or moving the furnace always lift it by its base. Do not lift it by the end panels or by the internal insulation. Use two people to carry the furnace where possible. Remove any packing material from inside the furnace before use. - Page 4 The 1400°C models have an electronically controlled power limit. Do not attempt to calculate the Amps from the Wattage. High break capacity fuses should be used. Avoid fast-blow fuses and magnetic trip circuit breakers - consult Carbolite if in doubt. MF10...
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Page 5: Operation
PERATION The instructions for operating the temperature controller are given in a separate manual. If the furnace is fitted with a time switch, see also the supplementary manual MS03. Operating Cycle If the furnace has an auxiliary heater, see also section 3.2. The furnace is fitted with a combined Supply light and Instrument switch. - Page 6 General Operating Advice Heating element life is shortened by use at temperatures close to maximum. Do not leave the furnace at high temperature when not required. The maximum temperature is shown on the furnace rating label and on the back page of this manual. Switch off the Heater switch whenever loading or unloading the furnace - see the safety warning below.
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Page 7: Maintenance
To contact Thermal Engineering Services or Carbolite see the back page of this manual. Recommended Spares Kits Carbolite can supply individual spares, or a kit of the items most likely to be required. Ordering a kit in advance can save time in the event of a breakdown. Each kit comprises one thermocouple, one solid state relay, one heating element or set of elements. - Page 8 If it exceeds 100%, the elements have too high a resistance and need replacing: check your data and calculations with Carbolite. See the separate manual supplied for how to adjust the controller. Always record the setting when first making an adjustment.
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Page 9: Repairs & Replacements
& R EPAIRS EPLACEMENTS Safety Warning – Disconnection from Supply Always ensure that the furnace is disconnected from the supply before repair work is carried out. Safety Note - Refractory Fibrous Insulation This furnace contains refractory fibres in its thermal insulation. These materials may be in the form of fibre blanket or felt, vacuum formed board or shapes, mineral wool slab or loose fill fibre. - Page 10 Feed the heating element tails through the terminal blocks and tighten the clamping screws using two spanners as before. Cut off excess element tails. Refit the insulation and refit the lid. Do not use any cement unless supplied by Carbolite, as other types may chemically attack the heating element.
- Page 11 If any fuse has failed, it is advisable for an electrician to check the internal circuits. Replace any failed fuses with the correct type. For safety reasons do not fit larger capacity fuses without first consulting Carbolite. The fuses are near the cable entry point, and access is by removal of a panel.
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Page 12: Fault Analysis
AULT NALYSIS A. Furnace Does Not Heat Up The HEAT light The heating Check also that the SSR is working element has failed correctly is ON The HEAT light The controller The thermocouple has broken or has a is OFF shows a very high wiring fault temperature or a... -
Page 13: Circuit Diagrams
IRCUIT IAGRAMS Safety switches: where the furnace rating is over 16A, there is a single switch in the contactor coil circuit, and the double switch shown is not present. Single Phase contactor contactor Filter (if fitted) safety switch Supply light Supply light Instrument Switch Instrument Switch... - Page 14 OP.Hi The power limit settings (parameter ) for the 1200°C CFM models are all 100%, with the exception of any units supplied for 254V operation where the limit is 89%. The power limit settings for the 1400°C models are as follows. The figures represent the maximum percentage of time that controlled power is supplied to the elements.
- Page 15 MF10...
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Page 16: Specifications
Thank you for reading this data sheet. For pricing or for further information, please contact us at our UK Office, using the details below. UK Office Keison Products, P.O. Box 2124, Chelmsford, Essex, CM1 3UP, England. Tel: +44 (0)330 088 0560 Fax: +44 (0)1245 808399 Email: sales@keison.co.uk...
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