Table of Contents
Advertisement
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.
page
1.0
2.0
3.0
4.0
5.0
6.0
7.0
8.0
9.0
Manuals for the furnace controller and overtemperature controller are
Please read the controller manuals before operating the furnace.
1.0
1700-1800°C Tube Furnaces
types CTF & TZF
C
ONTENTS
supplied separately.
MF32-3.13
section
1
3
6
10
11
14
14
16
17
Advertisement
Table of Contents
Related Manuals for Carbolite CTF
Summary of Contents for Carbolite CTF
-
Page 1: Table Of Contents
Installation, Operation & Maintenance Instructions 1700-1800°C Tube Furnaces types CTF & TZF 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 page section Symbols &... -
Page 2: Symbols & Warnings
1700-1800° Tube & 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 Light: the adjacent light glows or flashes to indicate that power is being supplied to the elements Warning Symbols DANGER of electrical shock–... -
Page 3: Installation
Connect the aluminium braids securely as indicated in the element installation instructions. Fitting the Thermocouples The number of thermocouples depends on the model. CTF has two, TZF has four or five depending on the 3-zone control method. The thermocouples are enclosed in ceramic sheaths which fit downwards through the roof in holes approximately 10mm. - Page 4 Remove loose dust with a domestic vacuum cleaner. Safety note: see section 5.2. If the holes in the insulation are too large, please consult Carbolite for technical assistance. If a long tube is specified, then a pair of cylindrical end-guards is supplied. Bolt these onto the furnace ends.
- Page 5 1700-1800° Tube Internal Work Tube Supports Work tubes may sag at high temperatures. The furnace is fitted with internal tube supports which should be manually adjusted to suit the tube diameter. With the tube fitted into the furnace, remove the back panel and identify the tube supports. In the /300 models, there is 1 support.
-
Page 6: Operation
If the furnace is fitted with a time switch, see also the supplementary manual MS03. If cascade control is fitted, see the supplementary manual MS07. Operating Cycle (CTF models) The furnace is fitted with a combined Supply light and Instrument switch. The light is on whenever the furnace is connected to the supply. - Page 7 Set the "setpoint" of the end zone controllers to zero. Sometimes a furnace using this type of control does not cool down: the end controllers try to remain at the central temperature. Should this occur, contact Carbolite’s technical department. 2132 Slave Controller Navigation Diagram...
- Page 8 1700-1800° Tube 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. The furnace can be cycled between room temperature and maximum without a detrimental effect on element life - but see the notes on tube life.
- Page 9 1700-1800° Tube MF32...
-
Page 10: 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 sheath, one power thyristor, and a set of elements, clips and braids. -
Page 11: Repairs & Replacements
1700-1800° Tube & 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 Warning - 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 12 1700-1800° Tube Insulation Replacement After any replacement of insulation material, run the furnace at 1500°C to burn off volatile matter. Do this is a well ventilated area, without the work tube in place. Element Installation & Replacement Safety Warning – Molybdenum Disilicide elements. The elements form a glazed surface when heated.
- Page 13 CTF /600 single phase models have 10 elements in series CTF /600 3-phase models have 4 els in S – 2 els in S – 4 els in S TZF /600 models have 2 els ins S – 6 els in S – 2 els in S...
-
Page 14: Fault Analysis
1700-1800° Tube AULT NALYSIS A. Furnace Does Not Heat Up A heating element has failed The HEAT light An ohm meter applied to the element circuit shows is ON an open circuit The HEAT light The controller shows a The thermocouple has broken or has a wiring fault is OFF very high temperature... -
Page 15: Circuit Diagram
1700-1800° Tube IRCUIT IAGRAM Example - CTF 17/--/300 single phase temperature programmer OTC overtemperature controller GR/Y Green/Yellow Blue Pink Example - TZF 17/--/600 Grey Three-phase + Neutral, back-to-back thermocouples MF32... -
Page 16: Fuses & Power Control
CTF 17/--/600 1-phase 220-240 ES50 CTF 17/--/600 3-phase 380/220-415/240 25A NS25 2 x 30A 134A + 1 x 20A CTF 17/--/600 3-phase delta 220-240 NS25 2 x 30A 134A + 1 x 20A TZF 17/--/600 1-phase 220-240 ES50 2 x 20A... -
Page 17: 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...