VERDER Carbolite Gero CDF 15/1b Installation, Operation & Maintenance Instructions Manual Download Page 13

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CDF

MF56 – 1.05

7.0

IRCUIT

IAGRAMS

In all CDF models the safety switch in the diagram is a positive-break door switch.

EMC Filters (if fitted): dependent on the model there may be one filter, or more than one fitted in
parallel. The circuit diagram example does not show multiple filter arrangements.

7.1

Single Phase

SSR

Control thermocouple

Coil

Instrument Switch

Safety

Switch

if fitted

Filter

Heat

GR/Y

Contactor

Element(s)

Summary of Contents for Carbolite Gero CDF 15/1b

Page 1: ...rs of the above Carbolite Gero products and should be read before the furnace is connected to the electricity supply CONTENTS Section page 1 0 Symbols Warnings 2 2 0 Installation 2 3 0 Operation 4 4 0 Maintenance 6 5 0 Repairs Replacements 8 6 0 Fault Analysis 12 7 0 Circuit Diagrams 13 8 0 Fuses Power Settings 14 9 0 Specifications 15 ...

Page 2: ...s and Replacements section 2 2 Siting Setting Up Place the furnace in a well ventilated room away from other sources of heat and on a surface which is resistant to accidental spillage of hot materials Do not mount the furnace on an inflammable surface DANGER of electrical shock read any warning printed by this symbol DANGER hot surface Read any warning printed by this symbol WARNING all surfaces o...

Page 3: ...VERY FRAGILE and are packed separately Fit them according to the instructions in section 5 7 2 5 Electrical Connections Connection by a qualified electrician is recommended Check the furnace rating label before connection The supply voltage should agree with the voltage on the label and the supply capacity should be sufficient for the amperage on the label The supply should be fused at the next si...

Page 4: ...eating element but if a large object is placed in the chamber it may record the average temperature of the object and the elements which can lead to overheating of the elements Allow large objects to gain heat at a lower temperature and then reset the controller to a temperature close to the desired maximum When heating materials which produce smoke or fumes the chimney must be correctly fitted an...

Page 5: ...e air Residual oxygen levels of 1 are to be expected In practice inert or oxidising gases may be used but not combustible or toxic gases 3 5 Operator Safety The furnace incorporates a safety switch which interrupts the heating element circuit when the door is opened This prevents the user touching a live heating element but also prevents the furnace from heating up if the door is left open The ope...

Page 6: ...rolonged use the controller and or thermocouple could require recalibration This would be important for processes which require accurate temperature readings or which use the furnace 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 t...

Page 7: ...ay be necessary to replace them 4 6 Power Adjustment The furnace control system incorporates electronic power limiting Power is supplied to the elements in bursts of about 1 3rd second duration This prevents overheating of the elements The power limit is compensated for by the aid of the soft start function which will limit the initial output power until a programmed temperature is reached whereby...

Page 8: ...airs we recommend reference to the European Association representing the High Temperature Insulation Wool industry www ecfia eu We can provide further information on request Alternatively our service division can quote for any repairs to be carried out at your premises or ours 5 3 Temperature Controller Replacement 301 These controllers are fitted to the back of the control panel which can be sepa...

Page 9: ...thermocouple sheath withdraw the sheath and shake out any fragments of thermocouple Re assemble with a new thermocouple observing the colour coding ensuring that the thermocouple is not twisted as it is being inserted and that sheath is refastened 5 7 Element Fitting and Replacement Replacements read the section on element ageing 4 5 Disconnect the furnace from the electrical supply and remove the...

Page 10: ...procedure for the other two elements The braids should then be connected as follows Starting from one side Take the loose end of braid that is connected to the connection block See Photo 5 and attach to the first element tail of the nearest element using M6 screw washer nut See Photo 6 Connect the second element tail of the same element to the first element tail of the centre element using the sam...

Page 11: ...ements Using the reverse method described above disconnect the braids or cables and carefully withdraw each element Carefully insert the new elements into the furnace and attach the braids according to the notes made or according to the appropriate diagram below Whether fitting new elements or replacing old replace the furnace back panel when connections are complete remembering to connect the ear...

Page 12: ... or faulty controller There are no lights glowing on the controller Check the supply fuses and any fuses in the furnace control compartment The controller may be faulty or not receiving a supply due to a faulty switch or a wiring fault B Furnace Overheats 1 The HEAT light goes OFF with the instrument switch The controller shows a very high temperature The controller is faulty The controller shows ...

Page 13: ...ers if fitted dependent on the model there may be one filter or more than one fitted in parallel The circuit diagram example does not show multiple filter arrangements 7 1 Single Phase SSR TC Control thermocouple G P Coil R Instrument Switch Safety Switch F2 F2 if fitted Filter F1 Heat F1 N L GR Y PE BU R BU Contactor L Element s ...

Page 14: ...of EMC filter 16 Amps 38mm x 10mm type F F2 Auxiliary circuit fuses Fitted on board to some types of EMC filter May be omitted up to 10 Amp phase supply rating 2 Amps glass type F On board 32mm x 6mm Customer fuses Recommended if cable fitted See rating label for amperage see table below for fuse rating Model phases Volts Supply Fuse Rating CDF 15 1b 1 phase 200 230 13A ph ...

Page 15: ...wer Chamber Size mm Approx Capacity Net Weight C kW H W D l kg Chamber Furnaces heated by Silicon Carbide elements CDF 15 1b 1530 C 2 0 80 90 150 1 1 40 9 2 Environment The furnaces contain electrical parts and should be stored and used in indoor conditions as follows temperature 5 C 40 C relative humidity maximum 80 up to 31 C decreasing linearly to 50 at 40 C ...

Page 16: ...urnaces 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 Copyright 2016 Carbolite Gero Limited For preventive maintenance repair and calibration of all Furnace and Oven products please contact Carbolite Gero Service Telephone 44 0 1433 624242 Fax 44 0 143...

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VERDER Carbolite Gero CDF 15/1b, Installation, Operation & Maintenance Instructions Manual

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