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32, 7.0 Repairs and Replacements 7.7 Element Replacement See section 7.2 - wearing a face mask is required. The coverings and guards which must be removed to enable replacement of the wound tube element depend on the furnace model, its orientation (horizontal or vertical), and other options and fittings. The general procedure is: Disconnect the product from the electrical supply. Remove all outer guards, meshes and terminal covers from the product's body. For a horizontally mounted product remove the product body from i…
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33, 8.0 Fault Analysis A. Furnace Does Not Heat Up 1. The HEAT light is ON The heating element has failed Check also that the SSR is working correctly 2. The HEAT light is OFF The controller shows a very high temperature or code such as S.br The thermocouple has broken or has a wiring fault The controller shows a low temperature The door switch(es) (if fitted) may be faulty or need adjustment The contactor/relay (if fitted) may be fau…
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8, 2.0 Installation If a metal work tube is being used in the furnace, ensure that it is earthed. In the case of woundtube models it should be mounted so as not to touch the furnace ceramic tube. See the 5.3. Key A Tube B Insulating Plug C Stem Fig 1 - Insulating Plug (standard length tube) 2.4 Electrical Connections Connection by a qualified electrician is recommended. This product requires a single-phase A.C. supply with earth (ground), which may be Live to Neutral non-reversible (pol…
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40, 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. For preventive maintenance, repair and calibration of all furnace and oven products, please contact: Carbolite …
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23, 5.0 Operation 5.1 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. There is also a heater switch which can be used to disconnect power to the elements. Operate the instrument switch to activate the temperature controller. The controller becomes illuminated and goes through a short test cycle. Over-Temperature option only. If the digital over-temperature option has not yet been set as required, set and activate it according to the …
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17, 3.4 Controller Options As options can be ordered in a variety of combinations and for a variety of purposes, exact instructions are not given here. The full Eurotherm manual may be required to determine customer parameter settings. To reveal or hide parameters in the controllers it is necessary to go into configuration mode, a security code is needed. Please consult Carbolite Gero. 3.4.1 Digital Communications - RS232 If the RS232 option is supplied, the furnace is fitted with on…
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4, 1.0 Symbols and Warnings 1.0 Symbols and Warnings 1.1 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. Heat switch: the switch disconnects power to the heating elements; unless this switch is OFF there is a danger of electric shock when inserting objects into the produ…
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2, VERDER CARBOLITE GERO MTF 12/25 Series 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. Use the product for the purpose for which it is intended. 1.0 Symbols and Warnings 4 1.1 Switches and Lights 4 1.2 General Warnings 4 2.0 Installation 6 2.1 Unpacking and Handling 6 2.2 Siting an…
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16, 3.0 2416 Controller For a more detailed view, press page to access the 'Run' list page and scroll to see its contents as shown in the Navigation Diagram below. Provided the unit is first put into 'Hold' mode, temporary changes may be made to parameters; these apply only until the program ends or is reset. To pause a program, press Run/ Hold; the 'Hold' light comes on. To terminate a program, press Run/ Ho…
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34, 8.0 Fault Analysis B. Product Overheats 1. Product only heats up when the instrument switch is ON The controller shows a very high temperature The controller is faulty The controller shows a low temperature The thermocouple may be faulty or may have been removed out of the heating chamber The thermocouple may be connected the wrong way around The controller may be faulty 2. Product heats up when the instrument switch is OFF The SSR has failed "ON" Check for an accidental wiring faul…
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20, VERDER CARBOLITE GERO MTF 12/25 Series 4.0 2132 Over-Temperature 4.0 2132 Over-Temperature Controller Description (if fitted) 4.1 Description Key A Alarm Light B Page C Scroll D Down E Up F 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 ov…
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27, rect positioning Seals (if fitted) Check all seals and O-rings and clamps Performance Element Circuit Electrical measurement Power Consumption Measure the current drawn on each phase / circuit Cooling Fans (if fitted) Check whether the cooling fans are work- ing 27 6.0 Maintenance
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26, 6.0 Maintenance 6.0 Maintenance 6.1 General Maintenance Preventive rather than reactive maintenance is recommended. The type and frequency depends on the product use; the following are recommended. 6.2 Maintenance Schedule CUSTOMER QUALIFIED PERSONNEL DANGER! ELECTRIC SHOCK. Risk of fatal injury. Only electrically qualified personnel should attempt these maintenance procedures. Maintenance Procedure Method Frequency Daily Weekly Monthly Bi- Annually Annually Safety Over-Temperature Safety Circuit (if fitted) Set an over-temperature setpoint lower…
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15, VERDER CARBOLITE GERO MTF 12/25 Series If all segments are used so that there is no 'End' segment, then on completion the program automatically goes into 'Dwell'. Dwell segments of length zero can be included. This is a way of allowing space for future program changes. For an example of program creation, see section 3.3.6. 3.3.2 Multi-program model (2416P8) The 'Program Edit' list contains the extra parameter 'PrG.n' and the 'Run' list c…
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22, VERDER CARBOLITE GERO MTF 12/25 Series 4.0 2132 Over-Temperature 4.3 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. 4.4 Navigation Diagram HL Home List Page Key Black = Progress OTSP Over-Temperature Setpoint Scroll Key Dashed = Through to other options AL Access List For factory access to list and parameters not available to the operator.…
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21, 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; further presses reveal the lists indicated in the navigation diagram. See section 4.4. The scroll key allows access to the parameters within a list. Some parameters are display-only; others may…
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12, 3.0 2416 Controller 3.2 Operation Most Carbolite Gero products are fitted with an instrument switch which cuts off power to the controller and other parts of the control circuit. See section 5.0 for operating instructions. To operate the 2416 Controller there must be power to the furnace or oven and the instrument switch must be on. If a time switch is included in the furnace or oven circuit, this must be in an ON p…
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36, VERDER CARBOLITE GERO MTF 12/25 Series 10.0 Fuses and Power Settings 10.0 Fuses and Power Settings 10.1 Fuses F1 - F3: Refer to the circuit diagrams. F1 Internal Supply Fuses Fitted if supply cable fitted. Fitted on board to some types of EMC filter. GEC Safeclip of the type shown (glass type F up to 16 A) 38 mm x 10 mm type F fitted on EMC filter circuit board(s) F2 Auxiliary Circuit Fuses Fitted on board to some types of EMC filter. May be omitted up to 25 Amp/ phase supply rating. 2 Amps glass type F On board: 20 mm x 5 mm Other: 32 mm x 6 mm F3 Heat Light Fuses May be om…
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11, Fig 1 -Simple Control Fig 2 - Control with Ramp-to- Setpoint Seg 1 = Ramp Sep 2 = End (Dwell) Fig 3 - A Program Key T1 Temperature T2 Time SP Setpoint AT Actual Temperature WSP Working Setpoint R Ramp D Dwell S Step E End 11 3.0 2416 Controller
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30, 7.0 Repairs and Replacements 7.4 Solid-State Relay Replacement Disconnect the product from the power supply and remove the appropriate cover as given above. Make a note of the wire connections to the solid state relay and disconnect them. Remove the solid state relay from the base panel or aluminium plate. Replace and reconnect the solid state relay ensuring that the bottom of it has good thermal contact with the base panel or aluminium plate. Replace the access panel. 7.5 Thermoc…
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13, VERDER CARBOLITE GERO MTF 12/25 Series Auto/ Manual Disabled. The unit is always in 'Auto' mode RUN/HOLD - Used to start, stop or pause a program. Short presses cause it to alternate between 'Run' and 'Hold', but if it is held for 2 seconds the programmer goes into 'Reset' mode where it behaves as a simple controller. Up + Down + To adjust the value of a parameter. Used to change the setpoint when the unit is being used as a simple controller ('Reset' mode).…
