VERDER Carbolite Gero EVC 12/450B, Installation, Operation And Maintenance Instructions

Page 1: ...Installation Operation and Maintenance Instructions 1200 C Tube Furnace 3 zone EVC Model 450mm No Controller EVC 12 450B No Controller MEN EVC12450B 16_NOCTRL 09 07 2019 ...

Page 2: ...ical stand 9 2 3 4 Figure Tube furnace positioned horizontally on the stand 10 2 3 5 Figure Exploded view showing how to fit the work tube in the EVA 11 2 3 6 Figure Tube support 12 2 3 7 Figure Tube support assembly 12 2 3 8 Figure Tube support and end seal assembly 13 2 3 9 Figure Tube support and end seal assembly 13 2 3 10 Figure View showing how to support the work tube in a vertical ori enta...

Page 3: ...Disconnection from Power Supply 27 6 2 Safety Warning Refractory Fibre Insulation 27 6 3 Temperature Controller Replacement 27 6 4 Solid state Relay Replacement 28 6 5 Thermocouple Replacement 28 6 6 Element Replacement 28 6 7 Fuse Replacement 29 7 0 Fault Analysis 30 A Furnace Does Not Heat Up 30 B Product Overheats 31 8 0 Wiring Diagrams 32 8 1 WC 13 30 32 8 2 WC 13 31 32 9 0 Fuses and Power Set...

Page 4: ...d to the elements 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 product 1 2 General Warnings DANGER Electric shock Read any warning printed next to this symbol WARNING Risk of fatal injury DANGER Hot surface Read any warning printed next to this symbol WARNING All surfaces of a product ...

Page 5: ...work tube adaptors or it could be possible for an operator to access electrically live element coils that could cause serious injury or death 8 Warning label Switch off the furnace before loading and unloading The furnace heaters must be switched OFF using the heater switch item 2 in figure 1 3 1 when the furnace is being loaded or unloaded The work tube can become electrically conductive at high ...

Page 6: ...er ON and OFF to the furnace heating ele ments 3 Heater ON light indicates that the furnace heating elements are energized 4 Product rating label indicating the product serial number and electrical inform ation 5 Access holes to front panel fixing screws 6 Warning label Disconnect the mains supply before removing this cover 7 Warning label Do not operate without a work tube 8 Warning label Switch ...

Page 7: ...al spillage or hot materials The surface on which the equipment is mounted should be stable and not subject to movement or vibrations The height of the mounting surface is important to avoid operator strain when loading and unloading samples Unless otherwise stated elsewhere in this manual ensure that there is at least 150 mm of free space around the back and sides of the product Clear space is re...

Page 8: ...bling the stand and mounting the furnace Tools required 4 mm Allen key The assembly of the vertical stand is as follows with reference to 2 3 1 2 3 2 and 2 3 3 Place the vertical stand base item 1 on the floor or bench on which it is to be assembled l Position the vertical stand upright 2 on the stand base in line with the fixing holder l Secure the stand upright to the base using the 6 x M6 dome ...

Page 9: ...mbling the stand Index to numbered items in Figure 2 3 2 and Figure 2 3 3 1 Vertical stand base 2 Vertical stand upright 3 Fixing screws M6 x 16 dome cap screw 4 Washer M6 5 Tube furnace 6 M6 screw knob 2 3 3 Figure Mounting the fur nace onto the vertical stand 9 2 0 Installation ...

Page 10: ...o 2 3 5 Note that standard length work tubes are also referred to as tubes suitable for working in air they are 150 mm longer than the heated length of the furnace see the table in section 10 0 Read section 6 2 before fitting the work tube l Remove the top work tube end guard item 8 hen remove the work tube adaptor fix ing bracket 4 that holds the work tube end stop 7 and the work tube adaptor 3 i...

Page 11: ... without an end seal care should be taken not to over tighten on to a bare tube especially if the tube is either quartz or thin wall section l Before the extended work tube can be fitted the work tube end stops for the stand ard length work tube must be removed from both ends of the furnace This is done by removing the furnace end guard 8 and the work tube adaptor brackets 4 to release the work tu...

Page 12: ... 0 Installation l Figure 2 2 shows an exploded view of all the required parts l Figure 2 2 shows the assembled parts as they would be used 2 3 6 Figure Tube support 2 3 7 Figure Tube support assembly 12 ...

Page 13: ... Figure Tube support and end seal assembly 2 3 9 Figure Tube support and end seal assembly For extra stability of the tube repeat the assembly instructions above as shown in figure 2 3 10 13 2 0 Installation ...

Page 14: ...et order option or installation in customer s test rig mounting frame It is the customer s responsibility to carry out a risk assessment on the siting and mounting of the furnace and to ensure that it is operated in a safe manner see section 2 2 for the recommended siting instructions The fitting of the work tube is covered in the previous section 2 4 1 Figure Tube furnace shown without a stand fo...

Page 15: ...s vacuum end seal is fitted either horizontally or vertically the insulation plug hooks onto the end seal hook see figure B Alignment of radiation shields is similar to that of insulation plugs see figure C If a metal work tube is being used in the furnace ensure that it is earthed See the safety warning in section 4 6 Figure A Cross section view showing standard length work tube insulation plug f...

Page 16: ...al supply should be fused at the next standard size equal to or higher than the design current Where a supply cable is supplied there are internal supply fuses in which case customer fusing is preferred but not essential See section 9 0 for furnace rating power current and fusing information The external connection should be either a permanent connection to a fused isolator supply or to a socket o...

Page 17: ...3 0 Temperature Controller If this product is fitted with a temperature controller instructions are provided separately 17 3 0 Temperature Controller ...

Page 18: ...ped an indicator on the over temperature controller flashes and the heating elements are isolated Find and correct the cause before resetting the over temperature controller according to the instructions supplied To switch off power to the heating elements use the heater switch To switch the product off use both the heater switch and the instrument switch If the product is to be left switched off ...

Page 19: ...ce elements must be switched off using the heater switch item 2 in Warning Labels when the furnace is being loaded or unloaded The work tube can become electrically conductive at high temperatures If an element has failed and collapsed onto the work tube the work tube will become live causing serious injury or death 4 4 3 Zone Control Methods There are three different control options A B C A Back ...

Page 20: ... Three independent thermocouples are connected to three controllers The three controllers are linked together and the centre zone controller communicates the desired setpoint to the end zone controllers If the centre zone controller is set to a setpoint or is running a program the end zone controllers will automatically follow For products with the CC T1 controller please refer to the separate CC ...

Page 21: ...the product at high temperature when it is not required The maximum temperature is shown on the product rating label and in section 10 0 towards the back of this manual Lightweight ceramic fibre insulation can easily be marked by accidental contact Some fine cracks may develop in the surface of the insulation due to the progressive shrinkage of the insulation materials Cracks are not usually detri...

Page 22: ...t both the heating and cooling rate 4 8 Pressure Work tubes are not able to accept high internal pressure When gas seals or similar fittings are in use the gas pressure should be restricted to a maximum of 0 2 bar 3 psi A pressure of approximately half of that should normally be sufficient to achieve the desired flow rate The operator must ensure that the exhaust path from the tube is not blocked ...

Page 23: ...than inert gases such as nitrogen 23 4 0 Operation ...

Page 24: ...ure Safety Circuit if fitted Electrical measurement Safety Switch Function split models only Set a safe temperature above ambient and open the furnace to see if the heater light goes out Safety Switch Function split models only Electrical measurement Electrical Safety external Visual check of external cables and plugs Electrical Safety internal Physically check all connections and clean ing of the...

Page 25: ...ck all seals and O rings and clamps Performance Element Circuit Electrical measurement Power Consumption Measure the current drawn on each phase circuit Cooling Fans if fitted Check whether the cooling fans are work ing 25 5 0 Maintenance ...

Page 26: ...Carbolite Gero Service has a team of Service Engineers who can offer repair calibration and preventive maintenance of furnace and oven products both at the Carbolite Gero factory and at customers premises throughout the world A telephone call or email often enables a fault to be diagnosed and the necessary parts to be despatched In all correspondence please quote the serial number and model type g...

Page 27: ...ered during maintenance or repair Whilst there is no evidence of any long term health hazards it is strongly recommended that safety precautions are taken whenever the materials are handled Exposure to fibre dust may cause respiratory disease When handling the material always use approved respiratory protection equipment RPE eg FFP3 eye protection gloves and long sleeved clothing Avoid breaking up...

Page 28: ...onnections Thermocouple cable colour codings are thermocouple leg colour positive type N pink negative white Disconnect the thermocouple from its terminal block Carefully withdraw the thermocouple from the product and remove any broken bits of thermocouple Bend the new thermocouple carefully to match the shape of the original working from the terminal end Should the length differ from that of the ...

Page 29: ... may not be fitted 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 Gero The fuses are located at the cable entry point Remove the back panel or control box back panel to gain access to the fuses 29 6 0 Repairs and Replacement...

Page 30: ... a low temperature The door switch es if fitted may be faulty or need adjustment The contactor relay if fitted may be faulty The heater switch if fitted may be faulty or need adjustment The SSR could be failing to switch on due to internal failure faulty logic wiring from the controller or faulty controller There are no lights glowing on the controller Check the supply fuses and any fuses in the f...

Page 31: ...r shows a low temperature The thermocouple may be faulty or may have been removed out of the heating chamber The thermocouple may be connected the wrong way around The controller may be faulty 2 Product heats up when the instrument switch is OFF The SSR has failed ON Check for an accidental wiring fault that could have overloaded the SSR 31 7 0 Fault Analysis ...

Page 32: ...8 0 Wiring Diagrams 8 0 Wiring Diagrams 8 1 WC 13 30 8 2 WC 13 31 Connections below show single phase with indirect safety switches and over temperature control 32 ...

Page 33: ...cuit board s F2 Auxiliary Circuit Fuses Fitted on board to some types of EMC filter May be omitted up to 25 Amp phase supply rating 2 Amps glass type F On board 20 mm x 5 mm Other 32 mm x 6 mm Customer Fuses Required if no supply cable fitted Recommended if cable fitted See rating label for current See table below for fuse rating Model Phases Volts Supply Fuse Rating Amps F1 EVC 12 450B 1 phase 20...

Page 34: ...To adjust the parameter refer to the Changing the Maximum Output Power of the control section of the manual All standard models covered by this manual are fitted with elements designed for use over the range of voltages 100 V 120 V and 200 V 240 V the power limit parameter is set according to the table below The power limit depends on the voltages follows Voltage 100 V 120 V 200 V 208 V 220 V 230 ...

Page 35: ...ubes with outside diameters of 32 mm 46 mm and 60 mm 10 1 Environment The furnaces contain electrical parts and should be stored and used in indoor conditions as follows Ambient temperature working range Temperature 5 C to 40 C Note when operating the furnace at temperatures close to the maximum and the ambient temperature is above 30 C the allowed external temperature defined in EN 61010 1 2010 m...

Page 36: ... Complete the Installation procedure see section 2 1 Step 3 After reading the controller operation instructions heat the furnace following the temperature profile given below This will need to be done manually on furnaces with basic control option or programmed into the controller if an advanced control option is fitted l Ramp the setpoint temperature 2 C minute to 100 C and dwell for 2 hours l Ra...

Page 37: ...Notes Service Record Engineer Name Date Record of Work ...

Page 38: ... us at the address below or ask your nearest stockist 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 1433 624243 Email ServiceUK carbolite gero com Carbolite Gero Ltd Parsons Lane Hope Hope Valley S33 6RB England Telephone 44 0 1433 620011 Fax 44 0 1433 621198 Email Info carbolite gero com...