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Summary of Contents for VERDER CARBOLITE GERO CF 24B
- Page 1 Installation, Operation and Maintenance Instructions 1200°C Cupellation Furnace - CF Model: 24B No Controller CF 24B + No Controller MEN-CF24B-005_NOCTRL 10-07-2020...
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Page 2: Table Of Contents
Contents This manual is for guidance on the use of the Carbolite Gero product specified on the front cover. This manual should be read thoroughly before unpacking and using the furnace or oven. The model details and serial number are shown on the back of this manual. - Page 3 6.0 Operation Operating Cycle Instrument Layout General Operating Advice Operator Safety Over-Temperature Control (if fitted) 7.0 Maintenance General Maintenance Maintenance Schedule 7.2.1 Cleaning Safety Switch Calibration After-Sales Service Recommended Spare Parts and Spare Parts Kit Element Ageing Power Adjustment 8.0 Repairs and Replacements Safety Warning - Disconnection from Power Supply Safety Warning - Refractory Fibre Insulation Temperature Controller Replacement...
- Page 4 12.0 Specifications 12.1 Environment...
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Page 5: Symbols And Warnings
1.0 Symbols and Warnings Switches and Lights Instrument switch: when the instrument switch is operated the temperature control circuit is energised. Heat light: the adjacent light glows or flashes to indicate that power is being supplied to the elements. General Warnings DANGER –... -
Page 6: Installation
2.0 Installation Unpacking & Handling When unpacking or moving the product, always lift by its base; do not use the door or any other projecting cover or component to support the equipment when moving it. Use a fork lift or pallet truck to move the product; position the product on a level surface and use an adequate number of personnel to safely move the product into position. -
Page 7: Siting And Setting Up
Siting and Setting Up Place the product on a level surface in a well ventilated area. Site away from other sources of heat and on a non-flammable surface that is resistant to accidental spillage or hot materials. The surface on which the equipment is mounted should be stable and not subject to movement or vibrations. -
Page 8: Split Model Cf24
Split Model CF24 When transported as two components, connect them as follows. Remove the side panels from the top and the left-hand side from the base. Remove the four fixing bolts from the top of the base. Place the top onto the base, with the door above the control panel and bolt the two halves together. - Page 9 The model covered in this manual has three internal circuits and is normally supplied for connection to a three phase power supply. This may be either star or delta, but a product must only be connected to the type and voltage of supply for which it was made.
- Page 10 2- or Black to phase 1 3-phase Black to phase 2 Black to phase 3 (except 2-phase) Light Blue to neutral (except delta) Green/ Yellow to earth (ground) Technical Notes This model has an electronically controlled power limit. Do not attempt to calculate the Amps from the Wattage.
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Page 11: Temperature Controller
3.0 Temperature Controller If this product is fitted with a temperature controller, instructions are provided separately. -
Page 12: 2132 Over-Temperature Controller Description (If Fitted)
4.0 2132 Over-Temperature Controller Description (if fitted) Description Alarm Light Page Scroll D Down Display This over-temperature controller is fitted and supplied ready to use by Carbolite Gero. It is a digital instrument with a latching alarm, requiring no additional panel controls. The controller features easy setting of over-temperature setpoint and reading of current temperature by the over-temperature sensor. -
Page 13: Operation
4.2.2 Operation When switched on, the controller lights up, goes through a short test routine and then displays the measured temperature or the over-temperature setpoint. The page key allows access to parameter lists within the controller. A single press of the page key displays the temperature units, normally set to °C;... -
Page 14: Audible Alarm
Audible Alarm If an audible alarm is supplied for use with the over-temperature controller, it is normally configured to sound on over-temperature condition and to stop sounding when the alarm is acknowledged as given in section 4.2. Note: the alarm may sound during controller start-up. Navigation Diagram Home List Page Key... -
Page 15: Time Switch
5.0 Time Switch Digital Time Switch - Theben TR 635 top2 The Theben TR 635 top2 is a 7 day digital time switch with 84 memory locations each of which can contain a switching time for any or all or the days in a week. It is battery backed with approximately 10 years power reserve. -
Page 16: Important Note
Important Note In the instructions below, "select" an item means the following: Press the arrow keys (usually the right) until the item appears on the screen. Then press Reset To reset press all four buttons simultaneously all stored programs can be retained or deleted. -
Page 17: Overriding The Program
OK. The first of the switching times is shown. Use the keys to adjust the time and confirm by pressing OK. Once the date and time memories are entered, the time switch automatically obeys them. Note that if the same time is used for an on as an off, off takes priority. Overriding the Program To change the present state between on and off, press MENU, select MANUAL. -
Page 18: Operation
6.0 Operation Operating Cycle This product is fitted with an instrument switch which cuts off power to the control circuit. Connect the product to the electrical supply. Turn on the instrument switch to activate the temperature controllers. The controllers illuminate and go through a short test cycle. This product if fitted with a time switch which operates in conjunction with the temperature controller as follows: Temperature... -
Page 19: Instrument Layout
To turn the product off, set the instrument switch to its off position. The controller display will go blank. If the product is to be left unattended, isolate it from the electrical supply. Instrument Layout The controllers are normally laid out as follows, although this may vary: 1. -
Page 20: Operator Safety
Operator Safety This product incorporates a safety switch which interrupts the heating element circuit when the furnace is opened. This prevents the operator touching a live heating element and also prevents the product from heating up if the furnace is left open. The operation of this switch should be checked periodically. -
Page 21: Maintenance
7.0 Maintenance General Maintenance Preventive rather than reactive maintenance is recommended. The type and frequency depends on the product use; the following are recommended. Maintenance Schedule CUSTOMER QUALIFIED PERSONNEL DANGER! ELECTRIC SHOCK. Risk of fatal injury. Only electrically qualified personnel should attempt these maintenance procedures. Frequency Maintenance Method... - Page 22 Function Tested using certified equipment, frequency Temperature Calibration dependent on the standard required Operational Check Check that all functions are working normally Thorough inspection and report incorporating a Operational Check test of all functions Performance Element Circuit Electrical measurement Measure the current drawn on each phase / cir- Power Consumption cuit Hearth and Top Element...
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Page 23: Cleaning
7.2.1 Cleaning Soot deposits may form inside the furnace, depending on the process. At appropriate intervals remove these by heating as indicated in the General Operation Notes. The product's outer surface may be cleaned with a damp cloth. Do not allow water to enter the interior of the case or chamber. -
Page 24: After-Sales Service
use the product close to its maximum temperature. A quick check using an independent thermocouple and temperature indicator should be made from time to time to determine whether full calibration is required. Carbolite Gero can supply these items. Depending on the controller fitted, the controller instructions may contain calibration instructions. -
Page 25: Power Adjustment
Please note: it is not possible to use the cold resistance of the element as a measure of ageing as the cold resistance is not an accurate indicator of hot resistance. Hot resistance is used to calculate furnace power. See the controller instructions for how to adjust the controller. Always record the setting when first making an adjustment. -
Page 26: Repairs And Replacements
8.0 Repairs and Replacements Safety Warning - Disconnection from Power Supply Immediately switch the product off in the event of unforeseen circumstances (e.g. large amount of smoke). Allow the product to return to room temperature before inspection. Always ensure that the product is disconnected from the electrical supply before repair work is carried out. -
Page 27: Solid-State Relay Replacement
Solid-State Relay Replacement Disconnect the product from the power supply and remove the appropriate cover as given above. 1. Make a note of the wire connections to the solid state relay, then disconnect them. 2. Remove the solid state relay from the base panel or aluminium plate. 3. -
Page 28: Element Fitting And Replacement
Element Fitting and Replacement Replacements: see section 7.7. If at any time the power limit has been increased, reset it to its original value (see section 11.0 at the back of this manual for the original value). New elements must not be mixed with aged elements. If a single element fails in an aged set of elements then replace with a new set. -
Page 29: Thermocouple Replacement
Thermocouple Replacement Disconnect the product from the power supply. Remove the appropriate panel to gain access to the thermocouple connections. Make a note of the thermocouple connections. Thermocouple cable colour codings are: thermocouple leg colour positive (type R) orange negative white Disconnect the thermocouple from its terminal block;... -
Page 30: Fault Analysis
9.0 Fault Analysis Furnace Does Not Heat Up The HEAT The heating element Check also that the SSR is working light is ON has failed correctly The controller shows a The HEAT The thermocouple has broken or has very high temperature light is OFF a wiring fault or code such as S.br... -
Page 31: Product Overheats
Product Overheats Product only heats up The controller when the instrument shows a very high The controller is faulty switch is ON temperature The thermocouple may be The controller faulty or may have been shows a low removed out of the heating temperature chamber The thermocouple may be... -
Page 32: Wiring Diagrams
10.0 Wiring Diagrams 10.1 WA-33-32 Connections below show 3-phase +N with indirect safety switches and E/ temperature control. - Page 33 10.2 WA-33-33 Connections below show 3-phase +N with indirect safety switches, over- temperature and E/ temperature control.
- Page 34 10.3 WS-01-01 The time switch motor circuit is connected to the supply side of the instrument switch. The volt-free contacts are in series with the instrument switch. 10.4 WS-01-02 The time switch motor circuit is connected to the supply side of the instrument switch. The volt-free contacts connect to digital inputs on the programmer;...
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Page 35: Fuses And Power Settings
11.0 Fuses and Power Settings 11.1 Fuses F1 - F3: Refer to the circuit diagrams. GEC Safeclip of the type shown Fitted if supply cable fitted. Internal (glass type F up to 16 A) Supply Fitted on board to some types 38 mm x 10 mm type F fitted on Fuses of EMC filter. -
Page 36: User Power Setting Adjustments
User Power Setting Adjustments Date % Power Comments Note: If a new set of elements are fitted then return the power settings to the original value. Please refer to the rating label for product specific information. - Page 37 12.0 Specifications Carbolite Gero reserves the right to change the specification without notice. Chamber Size (mm) Max Temp Max Power Net Weight Model (°C) (kW) (kg) Cupellation Furnaces heated by silicon carbide elements. CF 24B 1200 12.1 Environment The models listed in this manual contain electrical parts and should be stored and used in indoor conditions as follows: Temperature: 5 °C - 40 °C...
- Page 39 Notes Service Record Engineer Name Date Record of Work...
- Page 40 The products covered in this manual are only a small part of the wide range of ovens, chamber furnaces and tube furnaces manufactured by Carbolite Gero for laboratory and industrial use. For further details of our standard or custom built products please contact us at the address below, or ask your nearest stockist.
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