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All manuals and user guides at all-guides.com Installation, Operation and Maintenance Instructions 1700°C Bottom Loading Furnace - BLF Model: 3 Litres No Controller BLF 17/3 + No Controller MEN-BLF1703-003_NOCTRL (29-10-2021)
All manuals and user guides at all-guides.com 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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All manuals and user guides at all-guides.com Safety Warning - Disconnection from Power Supply Safety Warning - Refractory Fibre Insulation Safety Warning - Molybdenum Disilicide Elements Temperature Controller Replacement Fuse Replacement Thermocouple Replacement Element Protection Tube Option Replacement Procedure Insulation Replacement Element Installation and Replacement 7.0 Fault Analysis Furnace Does Not Heat Up...
All manuals and user guides at all-guides.com 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 –...
All manuals and user guides at all-guides.com 1.3 Prerequisites to Use Prior to the commissioning and use of this product, all personnel involved in its installation, operation and maintenance must be deemed competent and have: Read and understood the information contained within this manual Received the relevant training with regard to safety and operation of the product Been provided with the appropriate PPE (Personal Protective Equipment) required for the safe operation of this product...
All manuals and user guides at all-guides.com 2.0 Installation Unpacking and Handling When unpacking or moving the product always lift it by its base. Do not use the door or any other protruding parts. The product contains a transformer and is heavy: use two or more people to carry the product.
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All manuals and user guides at all-guides.com 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.
All manuals and user guides at all-guides.com Tie Wrap Removal Instructions The motor powered arm that operates the hearth movement has been fixed in place for transit. Please ensure the plastic tie wrap used to fix the arm is removed before operation.
All manuals and user guides at all-guides.com 2.4 Fitting the Chimney and Heating Elements Please refer to the Element Installation and Replacement in section 6.0. Wear eye protection when handling the heating elements. The molybdenum disilicide elements are EXCEPTIONALLY FRAGILE and are packed separately, together with other items shown in the list.
All manuals and user guides at all-guides.com Transit Clamps – dependent on model: the example shown here is for the 3 litre models; remove any transit clamps as shown. Fit the ceramic chimney to the hole that exits the top of the chamber. Most models are supplied with an insulation piece to fit around the chimney;...
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All manuals and user guides at all-guides.com Electrical Connection Details: Supply Types Supply Terminal Label Cable Colour Reversible or Live- Live - Neutral Live to either power conductor 1-phase Brown to live (For USA 200-240V, connect L1) to the other power conductor N / L2 Blue...
All manuals and user guides at all-guides.com 3.0 Temperature Controller If this product is fitted with a temperature controller, instructions are provided separately.
All manuals and user guides at all-guides.com 4.0 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. The cooling fans should automatically operate. The furnace is fitted with a pair of gates that have a safety switch.
A harmful gas is produced and collects in poorly ventilated spaces. The furnace is not recommended for burning off carbonaceous materials. Other Carbolite Gero furnaces are available for this application. When an optional gas inlet is fitted there is a label near the inlet saying "INERT GAS ONLY".
The programmer is used in conjunction with a phase angle thyristor power controller, which incorporates a current limit potentiometer pre-set by Carbolite Gero, but which will require adjustment in the event of change of supply voltage.
All manuals and user guides at all-guides.com Operators are advised to periodically check the thermocouple output, either by a calibration test or by comparing the output with a new reference thermocouple which has been subjected to high temperatures for a minimum length of time. Failure to check the thermocouple regularly may result in overheating of the work and the furnace, with consequential damage to both.
All manuals and user guides at all-guides.com 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.
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All manuals and user guides at all-guides.com Function Tested using certified equipment, frequency Temperature Calibration dependent on the standard required Check that all functions are working nor- Operational Check mally Thorough inspection and report incor- Operational Check porating a test of all functions Performance Element Circuit Electrical measurement...
Recommended Spare Parts and Spare Parts Kit Carbolite Gero can supply individual spare parts 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.
In the event of a change of supply voltage, or the fitting of a new thyristor, further adjustment may be required. The maximum element currents for this model are listed in section 9.0. Please contact Carbolite Gero for further information.
Before commencing any major repairs it is recommended to make reference to the European Association representing the High Temperature Insulation Wool industry (www.ecfia.eu). Further information can be provided on request. Alternatively, Carbolite Gero Service can quote for any repairs to be carried out either on site or at the Carbolite Gero factory.
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.
All manuals and user guides at all-guides.com Element Protection Tube Option Replacement Procedure Ensure the furnace is cold and isolated from the electrical connection. On the underside of the front cowl is a stainless steel mesh, which should be removed for access to the underside of the furnace.
All manuals and user guides at all-guides.com Element Installation and Replacement See section 6.3 - Safety Warning - molybdenum disilicide. Molybdenum disilicide elements form a glazed surface when heated. Internal stresses can form through heating and cooling which render the glaze fragile. The glaze can sometimes splinter into a shower of sharp particles when handled.
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All manuals and user guides at all-guides.com Braid Roof Insulation Element block Element Element Clamp See text Clip Braid Element Connections (3-phase example)
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All manuals and user guides at all-guides.com Use of Clip Tool The distance from the top of the element clamp to the top of the element should be 40 mm. Larger clips require the clip tool, comprising two levers: 1. Clip tool 2.
All manuals and user guides at all-guides.com 7.0 Fault Analysis Furnace Does Not Heat Up An ohm meter applied HEAT to the element circuit A heating element has failed. light(s) shows an open circuit. are ON. The controller shows a HEAT The thermocouple has broken or very high temperature...
All manuals and user guides at all-guides.com Product Overheats The HEAT light goes The controller OFF with the shows a very high The controller is faulty. instrument switch. temperature. The thermocouple may The controller have been shorted out or shows a low may have been moved out temperature.
Limit Model Phases Volts Fuse Type Fuse (Element Rating Rating Circuit) 1-phase 208 V BLF 17/3 32 A NS32 50 A 80 A BLF 17/3 1-phase 200 V 32 A NS32 50 A 80 A BLF 17/3 1-phase 230 V...
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All manuals and user guides at all-guides.com The setting for the power limit parameter in the controller (OP.Hi) should be 100% for this product. Please refer to the rating label for product specific information. Please refer to the rating label for product specific information.
All manuals and user guides at all-guides.com 10.0 Specifications Carbolite Gero reserves the right to change the specification without notice. Approx. Chamber Size (mm) Max Temp Max Power Net Weight Capacity Model (°C) (kW) (kg) Height Diameter Bottom Loading Furnaces heated by Molybdenum Disilicide elements, with electrically operated hearth.
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All manuals and user guides at all-guides.com 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.
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