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.
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Element Replacement Thermocouple Replacement Solid-State Relay Replacement 7.0 Fault Analysis Oven Does Not Heat Up Oven Overheats 8.0 Wiring Diagrams 9.0 Fuses and Power Settings Fuses Power Settings 10.0 Specifications 10.1 Environment...
1.0 Symbols and Warnings The following information includes different product options. They may not all apply to your product. 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.
2.0 Installation Unpacking and 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.
Depending on the application of the product, it may be appropriate to position it under an extraction hood. Ensure the extraction hood is switched on during use. Ensure that the product is placed in such a way that it can be quickly switched off or disconnected from the electrical supply.
Product without supply cable: a permanent connection to a fused and isolated supply should be made to the internal terminals after temporary removal of the product access panel. The access panel is located at the top of the 'A' models and the right hand side of the 'B' models.
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Check that the fan motor rotation is as shown on the fan motor(s). If it is incorrect change the phase rotation of the incoming supply to achieve correct rotation. The correct rotational direction is essential to achieve the specified temperature uniformity.
4.0 Operation Operating Cycle Note: The customer is responsible for conducting their own risk assessment prior to operating this product. Note: Always ensure that the operator is wearing the appropriate PPE when operating this product. Please consult your Health and Safety personnel.
Note: It is not necessary to acknowledge the over-temperature alarm by pressing the buttons on the over-temperature controllers. Only press the "OVERTEMP. RESET" button. 13. To switch off power to the heating elements, reduce the setpoint to 0°C on the main temperature controller.
isolated. Find and correct the cause before resetting the over-temperature controller according to the instructions supplied. DO NOT switch off if the temperature is above 100 °C - damage could be caused to the fan and motor. Adjust the controller to allow the temperature to fall. To turn the oven off, set the oven switch to it’s off position.
Loading and Unloading Chamber Where accurate temperature control of the load is important, use the central part of the chamber and distribute the load to allow free air circulation. Do not place loads on the chamber floor; use the bottom shelf. Remember that the shelves and work pieces may be hot;...
5.0 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...
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Performance Check whether the cooling fans are Cooling Fans (if fitted) working Circulating Fan Visual check to see if it is running (if fitted) Circulating Fan Check bearings and replace if neces- (if fitted) sary Element Circuit Electrical measurement Measure the current drawn on each Power Consumption phase / circuit Shelves...
5.2.1 Cleaning 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. Do not clean with organic solvents. Under no circumstances should any objects be placed on top of the product. Always ensure that any vents on the top of the product are clear of any obstruction.
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In some cases the supply voltage may be outside the range 220-240 V or the 3-phase equivalent, the power limit parameter may be set to a value other than 100%. Do not increase the value to 100%, see section 9.0 for details of power limit settings.
6.0 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.
Internal Element Cover/Air Guide: Attention to either the fan or the heaters is achieved by opening the air guide. The air guide is a one piece unit which is released without removal of any screws. Open the door and remove the shelves and the right hand side shelf runners. The air guide is hinged and swings open to reveal the fans and heaters after removal of the retaining pins.
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 K) green negative white Undo any clips holding the thermocouple.
7.0 Fault Analysis Oven Does Not Heat Up temperature No power from Check the fuses in the supply controller is supply line The controller shows a very high temperature The temperature sensor has temperature or a controller is broken or has a wiring fault code such as EEE or --- or S.br The SSR could be failing to...
9.0 Fuses and Power Settings Fuses F1 - F2: Refer to the circuit diagrams. Fitted if supply cable fitted. Internal 38 mm x 10 mm type F fitted on Supply Fitted on board to some types EMC filter circuit board(s) Fuses of EMC filter.
10.0 Specifications Carbolite Gero reserves the right to change the specification without notice. Dimensions: Dimensions: Approx External Model Temp Power Internal Capacity (°C) (kW) H x W x D (mm) H x W x D (mm) 13.5 1500 x 1000 x 1000 1500 2000 x 1910 x 1550 2/1500...
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Notes Service Record Engineer Name Date Record of Work...
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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.