VERDER CARBOLITE GERO SNF Installation, Operation And Maintenance Instructions
900 c swelling number furnace no controller
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- Page 1 Installation, Operation and Maintenance Instructions 900 °C Swelling Number Furnace: SNF No Controller SNF + No Controller MEN-SNF-005_NOCTRL (18-10-2021)
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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 Panel Removal Temperature Controller Replacement Heating Element Replacement Thermocouple Replacement Fuse Replacement Solid-State Relay Replacement 7.0 Fault Analysis Furnace Does Not Heat Up Product Overheats 8.0 Wiring Diagrams WA-11-00 8.2 WA-11-01 9.0 Fuses and Power Settings Fuses Power Settings 10.0 Specifications 10.1 Environment...
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Page 4: 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 5: Prerequisites To Use
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 Note: The customer is responsible for ensuring that all of the above conditions are... -
Page 6: Installation
2.0 Installation Unpacking and Handling When unpacking and handling the product, always lift it by its base. Do not use the door or any other projecting cover or component to support the equipment when moving it. Use two or more people to carry the product where possible. Carefully remove any packing material from inside and around the product before use. -
Page 7: Electrical Connections
Ensure that the product is placed in such a way that it can be quickly switched off or disconnected from the electrical supply. This product is supplied with a crucible holder (a small component made of wire). Ensure that this is present. Under no circumstances should any objects be placed on top of the product. - Page 8 When the mains cable is factory fitted, internal fuses are also fitted. It is essential that the operator ensures that the product is correctly fused. Products with a factory fitted supply cable are designed to be wired directly to an isolator or fitted with a line plug.
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Page 9: Temperature Controller
3.0 Temperature Controller If this product is fitted with a temperature controller, instructions are provided separately. -
Page 10: Operation
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. Turn on the instrument switch to activate the temperature controllers. The controllers illuminate and go through a short test cycle. Over-Temperature option only. -
Page 11: Snf Operation
SNF Operation The SNF furnace is designed to meet the requirement of following test standards: ASTM D720/D720M-15 BS ISO 501:2012 These international standards specify a method for determining the swelling properties of hard coal when heated in a covered crucible. Note: The "crucible swelling number"... -
Page 12: Calibration Crucible
The crucible should conform to the following specifications: External height: 26 ± 1.0 mm External diameter at top: 41 ± 1.0 mm Internal diameter at base: 14 ± 3.0 mm Mass: 12 ± 1.0 g Capacity: 16 ml - 17.5 ml 4.4.2 Calibration Crucible The calibration crucible should have a pierced silica lid, similar to the standard crucible... -
Page 13: Snf Calibration
SNF Calibration Wear appropriate PPE e.g. heat-resistant gloves, goggles Danger: Hot surfaces! Ensure that you have a suitable heat resistant surface on which to place hot items e.g. crucibles The SNF is supplied with the following calibration test equipment: Test thermocouple support bracket Test thermocouple (Type K, 1.5 mm diameter) Crucible Crucible carrier... - Page 14 Open the furnace lid and insert the cru- cible carrier into the furnace. Start timing the test as soon as the cru- cible is inserted into the furnace cham- ber. Insert the test thermocouple through the hole in the test thermocouple support bracket and down into the crucible via the hole in the crucible lid.
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Page 15: Operator Safety
Operator Safety Ceramic materials used in the furnace insulation can become conducting at high temperatures; therefore there is a potential danger to the operator, as this furnace is designed to be used with the chamber lid open. To guard against this danger, the furnace is fitted with a 30mA earth leakage (residual current) circuit breaker mounted in the back of the case. -
Page 16: Maintenance
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... - Page 17 Performance Element Circuit Electrical measurement Measure the current drawn on each phase / Power Consumption circuit...
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Page 18: Cleaning
5.2.1 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. Do not clean with organic solvents. - Page 19 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.
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Page 20: Repairs And Replacements
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. -
Page 21: Temperature Controller Replacement
the product case and the top panel). Lift off the top panel; ensure there is somewhere to place it without pulling on the wire connections. Temperature Controller Replacement Refer to the controller instructions for more information on how to replace the temperature controller. - Page 22 Make a note of the wiring con- nections, then disconnect the thermocouple and heating ele- ments. Carefully remove the top plate. The heating element assembly is fixed to the under- side of the top plate. Remove the four screws holding the heating element assembly to the top plate.
- Page 23 Fit the new heating element assembly to the underside of the top plate. Secure the heating element assembly in place with the four screws. Insert the heating element assembly into the furnace body. Referring to your notes, reconnect the heating element and thermocouple connections.
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Page 24: Thermocouple Replacement
Replace the top plate screws to secure it in position. Thermocouple Replacement Note: Disconnect the product from the electrical supply before carrying out any maintenance procedures. Note: The following maintenance procedure should only be carried out by a qualified electrician! Thermocouple Leg Wire Colour Positive... - Page 25 Remove the screws holding the top plate in position. Make a note of the wir- ing connections, then disconnect the ther- mocouple and heating elements. Carefully remove the top plate. The heating element assembly is fixed to the underside of the top plate with a P-clip.
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Page 26: Fuse Replacement
Replace the top plate screws to secure it in position. Fuse Replacement Fuses are marked on the wiring diagram with type codes, e.g. F1, F2. For more information on fuses refer to section 9.0. Depending on model and voltage, the different fuse types may or may not be fitted. If any fuse has failed, it is advisable for an electrician to check the internal circuits. -
Page 27: Fault Analysis
7.0 Fault Analysis Furnace Does Not Heat Up The temperature No power from the Check the fuses in the controller is OFF supply supply line The controller may be There are no lights faulty or not receiving a glowing on the supply due to a faulty controller switch or a wiring fault... -
Page 28: Product Overheats
Product Overheats Product only heats The controller up when the shows a very high The controller is faulty instrument switch is 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 29: Wiring Diagrams
8.0 Wiring Diagrams WA-11-00 Connections below show single phase. F1, F2, F3 Fuses Filter Temperature Controller Control Thermocouple Cables Solid State Relay Blue Heat Lamp Element(s) GR/Y Green + Yellow Instrument Switch(es) Grey Fan Motor Pink Fan Models Only Neutral Live Earth... -
Page 30: Wa-11-01
8.2 WA-11-01 Connections below show single phase with over-temperature controller. -
Page 31: Fuses And Power Settings
9.0 Fuses and Power Settings Fuses F1: 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. Model Volts Phases... -
Page 32: Specifications
10.0 Specifications Carbolite Gero reserves the right to change the specification without notice. External Dimensions Model Max Temp (°C) Max Power (kW) Net Weight (kg) H x W x D(mm) Swelling Number Furnace 330 x 410 x 300 10.1 Environment The models listed in this manual contain electrical parts and should be stored and used in indoor conditions as follows: Temperature:... - Page 33 Notes Service Record Engineer Name Date Record of Work...
- Page 34 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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