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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7.0 Fault Analysis Furnace Does Not Heat Up Product Overheats 8.0 Wiring Diagrams 9.0 Fuses and Power Settings Fuses Power Settings 10.0 Specifications 10.1 Environment...
1.0 Warnings 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 may be hot. DANGER –...
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.
Ensure that the product is placed in such a way that it can be quickly switched off or disconnected from the electrical supply. 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.
Products with a factory fitted supply cable are designed to be wired directly to an isolator or fitted with a line plug. Products without a factory fitted supply cable require a permanent connection to a fused and isolated supply. The product's electrical access panel should be temporarily removed, and connections made to the internal terminals.
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1. The CO gas supply should be isolated and regulated above 2 bar. (Approximately 5 bar). 2. Turn on the gas supply. 3. Slowly increase the CO pressure regulator until the pressure gauge reads 2 bar. 4. This may need fine adjustment when the test has started. 5.
Glass Retort Thermocouple 1. Remove front right hand side panel. 2. Un-plug the thermocouple 3. Remove the centre MI thermocouple, by turning the fixing screw out. 4. Lower the thermocouple down and through the hole in bottom mesh.
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5. Fit outer glass retort into heating chamber, locating the bottom end of the smaller retort tube through the base of the heating chamber. 6. Carefully slide the thermocouple into the glass tube to the top of the sheath. 7. Pull back from the top 2mm and re-fit the fixing screw. 8.
3.0 Operation Operating Cycle 1. Plug the furnace in with the plug supplied. 2. Switch on the mains isolator. 3. The temperature controller will illuminate and start its test cycle. 4. Press "ON". 5. The "FURNACE ON" light will be on, and the furnace will start to heat up to the pre-set program in the Eurotherm 3508 to ISO 12981-1 6.
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7. Set the flowmeter to 50 L/H. 8. Check the pressure gauge, and make adjustment if need. 9. After the temperature has reached 1000°C, the controller will dwell for 10 minutes. 10. After 10 minutes an alarm will sound for 10 seconds, and then stop. 11.
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12. Load sample. 13. Press "SAMPLE IN". 14. The "SAMPLE IN" light will stop flashing, and stay on. 15. The furnace will dwell at 1000°C for 100 minutes, with gas as to the ISO12981-1. 16. After the dwell the "FURNACE ON" light will switch off. 17.
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21. Remove the inner retort, and place in the Retort Cooling Area. 22. Retort Cooling Area. 23. Press "ON" to reset for the next test.
General Operating Advice Heating element life is shortened by overheating. Do not leave 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.
Recovery of Glass Retort If at any time the glass retort breaks within the heating chamber, or the test has to be stopped, the control has to be reset. 1. Press Page on the Eurotherm3508 Controller, until "PROGSTAT" is displayed. 2.
4. Wait, and allow the controller to reset; the display will then go back to normal. 5. If the glass retort breaks within the Retort Cooling Area: Always disconnect power to the furnace prior to carrying out recovery of the glass retort.
This has been factory set and should not be adjusted. The over temperature thermocouple is positioned within the element winding: Adjustment of Reaction Time 1. Enter Security Level 2 in the main controller (pass code 9); see the Eurotherm 3508 Controller section of this manual.
2. Press the Page key until "Program Edit" is reached. 3. Press Scroll until the segment 6 dwell time is reached. 4. Adjust the dwell period to the calculated figure. The standard setting as supplied, is 1 hour 40 minutes. Power Adjustment The product control system incorporates electronic power limiting.
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 Element Circuit Electrical measurement Measure the current drawn on each phase / Power Consumption circuit...
Maintenance Schedule CUSTOMER QUALIFIED PERSONNEL DANGER! ELECTRIC SHOCK. Risk of fatal injury. Only electrically qualified personnel should attempt these maintenance procedures. Frequency Maintenance Method Procedure Daily Weekly Monthly Annually Annually Safety Set an over-temperature setpoint lower than the displayed tem- Over-Temperature Safety Circuit perature and check for an over-tem- (if fitted)
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Element Circuit Electrical measurement Measure the current drawn on each Power Consumption phase / circuit Check whether the cooling fans are Cooling Fans (if fitted) working...
5.3.1 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.
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.
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 Disconnect the thermocouple from its terminal block and withdraw the thermocouple from its sheath by bending the metal tag or releasing the screw to release.
Element Replacement Individual elements are not available for this model of product, if an element fails then a complete element assembly is required. For details and fitting instructions contact Carbolite Gero Service, see the back page of this manual for contact information.
7.0 Fault Analysis Furnace Does Not Heat Up The HEAT The heating element Check also that the SSR is light is ON has failed working correctly The HEAT The controller shows a The thermocouple has broken or light is very high temperature has a wiring fault or code such as S.br The controller shows a...
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...
9.0 Fuses and Power Settings Fuses F1 - F3: 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: External Max Temp Max Power Model H x W x D Net Weight (kg) (°C) (kW) (mm) Reactivity Furnace 1000 1.05 660 x 660 x 475 CRF/1 10.1 Environment...
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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.
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