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 Repairs and Replacements Safety Warning - Disconnection from Power Supply Safety Warning - Refractory Fibre Insulation Panel Removal Temperature Controller Replacement Thermocouple Replacement Element Replacement Fuse Replacement Solid-State Relay Replacement 8.0 Fault Analysis Oven Does Not Heat Up Oven Overheats 9.0 Wiring Diagrams WV-11-00 WS-02-04 - Alarm-Operated Fan...
1.0 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. Solenoid valve (if fitted): see section 5.4 for full details General Warnings DANGER – Electric shock. Read any warning printed next to this symbol.
2.0 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.
2.0 Installation Ensure that the product is placed in such a way that it can be quickly switched off or disconnected from the electrical supply. During the operation of the product, hot air is exhausted from the vent on the top of the product while the cooling blower is in operation;...
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2.0 Installation Check the product rating label before connection. The supply voltage should agree with the voltage on the label and the supply capacity should be sufficient for the current on the label. The supply should be fused at the next size equal to, or higher than the current on the label.
4.0 2132 Over-Temperature 4.0 2132 Over-Temperature Controller Description (if fitted) Description Alarm Light Page Scroll D Down Display This over-temperature controller is fitted and supplied ready to use by Carbolite Gero. It is a digital instrument with a latching alarm, requiring no additional panel controls. The controller features easy setting of over-temperature setpoint and reading of current temperature by the over-temperature sensor.
4.0 2132 Over-Temperature 4.2.2 Operation When switched on, the controller lights up, goes through a short test routine and then displays the measured temperature or the over-temperature setpoint. The page key allows access to parameter lists within the controller. A single press of the page key displays the temperature units, normally set to °C;...
4.0 2132 Over-Temperature Audible Alarm If an audible alarm is supplied for use with the over-temperature controller, it is normally configured to sound on over-temperature condition and to stop sounding when the alarm is acknowledged as given in section 4.2. Note: the alarm may sound during controller start-up.
5.0 Operation 5.0 Operation Operating Cycle The product has fan-assisted circulation which operates when the instrument switch is switched on. Turn on the instrument switch to activate the temperature controllers. The controllers illuminate and go through a short test cycle. Over-Temperature option only.
5.0 Operation temperature. The rate of cooling is quite fast because of the air inlet blower which is incorporated in the oven. When the chamber temperature reaches 80 °C the second dwell period starts and the product remains at 80 °C for 12 hours. At the end of 12 hours the heaters are switched off and the product cools naturally to room temperature.
6.0 Maintenance 6.0 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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6.0 Maintenance Check whether the cooling fans are work- Cooling Fans (if fitted) Circulating Fan Visual check to see if it is running (if fitted) Circulating Fan Check bearings and replace if necessary (if fitted) Element Circuit Electrical measurement Measure the current drawn on each Power Consumption phase / circuit Shelves...
6.0 Maintenance 6.2.1 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.
7.0 Repairs and Replacements 7.0 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.
7.0 Repairs and Replacements To replace components (except controller), remove the front panel. Depending on the component, it may be necessary to remove an internal panel. If in doubt, please consult Carbolite Gero’s technical department. Temperature Controller Replacement Refer to the controller instructions for more information on how to replace the temperature controller.
7.0 Repairs and Replacements Take care not to disconnect the wires leading from the EMC filter without first recording their positions: they must be reconnected to the correct terminals. Solid-State Relay Replacement Disconnect the product from the power supply and remove the appropriate cover as given above.
8.0 Fault Analysis 8.0 Fault Analysis Oven Does Not Heat Up temperature No power from Check the fuses in the supply line controller is supply The controller shows a very high temperature The temperature sensor has broken temperature or a controller is or has a wiring fault code such as EEE...
9.0 Wiring Diagrams 9.0 Wiring Diagrams WV-11-00 F1, F2 Fuses Filter Instrument Switch Fan Motor Fan Models Only Temperature Controller Thermocouple Solid State Relay Element(s) Live Neutral Earth (GR/- (Green+Yel- low)
9.0 Wiring Diagrams WS-02-04 - Alarm-Operated Fan The fan is operated by an alarm relay in the controller. The cooling fan does not operate if the instrument switch is switched off.
10.0 Fuses and Power Settings 10.0 Fuses and Power Settings 10.1 Fuses F1- F2: Refer to the circuit diagrams. GEC Safeclip of the type shown Fitted if supply cable fitted. Internal (glass type F up to 16 A) Supply Fitted on board to some types 38 mm x 10 mm type F fitted on Fuses of EMC filter.
11.0 Specifications 11.0 Specifications Carbolite Gero reserves the right to change the specification without notice. Chamber Size Max Temp Max Power Approx (mm) Model Weight (°C) (kW) Capacity (l) (kg) Ovens for thermoluminescent dosimeters TLD 28 2.25 11.1 Environment The models listed in this manual contains electrical parts and should be stored and used in indoor conditions as follows: Temperature: 5 °C - 40 °C...
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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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