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
4.2.3 Over-Temperature Operation 4.2.4 Over-Temperature Alarm 4.2.5 Resetting the Over-Temperature Alarm 4.2.6 Sensor Break Audible Alarm Navigation Diagram 5.0 Operation Operating Cycle General Operating Advice Notes on Test Operator Safety 6.0 Maintenance General Maintenance Maintenance Schedule 6.2.1 Cleaning Calibration After-Sales Service Recommended Spare Parts and Spare Parts Kit Power Adjustment 7.0 Repairs and Replacements...
Page 4
10.2 Power Settings 11.0 Specifications 11.1 Environment...
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. Heat light: the adjacent light glows or flashes to indicate that power is being supplied to the elements. General Warnings DANGER –...
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. 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
2.0 Installation manual. 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.
3.0 2132 Controller 3.0 2132 Controller Description The 2132 Controller is made by Eurotherm, and is fitted and configured by Carbolite Gero for immediate use. It is a digital instrument with PID control algorithms. The 2132 Controller features: Easy use as a simple temperature controller, where on setting the required tem- perature the controller immediately attempts to reach and maintain it.
3.0 2132 Controller 3.2.2 2132 Controller Operation Alarm Light Page Scroll D Down Display 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.
3.0 2132 Controller 3.2.5 Stopping and Starting Control It is possible to stop and start the controller without altering the setpoint. Press scroll until the legend 'm-A' (manual/ auto) appears. In this controller, manual means OFF and auto means ON. Press down or up once to show the current on/ off state: 'mAn' for OFF and 'Auto' for ON.
3.0 2132 Controller Fig 1 - Control without Ramp-to-Setpoint Fig 2 - Control with Ramp-to-Setpoint Temperature Time Setpoint WSP Working Setpoint Actual Temperature Operating with the Timer This controller can be used as a process timer allowing timed heating or timed delay, according to the options in the table.
Page 13
3.0 2132 Controller Timer Mode Description Timer Light The timer starts timing when the actual temperature is within 1 °C On while temperature is mode 1 of the setpoint. At the end of the reaching setpoint. On during timing period, control switches Timed dwell and the timing period.
3.0 2132 Controller 3.3.1 Setting the Timer Mode Scroll to 'tm.OP'; use to view and alter the mode. The mode shows as 'OPt.1' to 'OPt.5'. It is not possible to alter the mode while the timer is operating; if the mode cannot be altered, scroll to the 'StAt' parameter and set its value to OFF.
3.0 2132 Controller 3.3.5 End of Time Period Modes 1 and 3: heating stops at the end of timing; the 'm-A' parameter changes to 'mAn'. Modes 2 and 4: heating continues at the end of timing; the 'm-A' parameter remains at 'Auto'.
Page 17
3.0 2132 Controller For silicon carbide heated furnaces the parameter is accessible to allow for compensation for element ageing. In wire-heated chamber or tube furnaces, reducing the power limit is a convenient method of improving control at low temperatures, as outlined below.
Page 18
3.0 2132 Controller The controller is calibrated for life at manufacture against known reference sources, but there may be sensor errors or other system errors. User calibration allows compensation for such errors and this controller allows for a user 2-point calibration. This setting is password protected to avoid accidental alteration.
3.0 2132 Controller User Temperature Reading Factory Temperature Reading UC User Calibration UF Factory Calibration Audible Alarm If an audible alarm is supplied for use with the timer function, then it is normally configured to sound at the 'End' condition and to go off when the alarm is acknowledged as given in section 3.3.6.
Page 21
3.0 2132 Controller HL Home List Input List OL Output List AL Access List Measured temperature; use arrow keys to access setpoint Output power (read only) Present only if SPrr in use Manual/Auto (mAn = off, Auto = on) Setpoint ramp rate OFF or value Timer mode Time remaining Dwell time for timer...
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 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.
5.0 Operation Notes on Test The furnace is intended for use with tests in accordance with BS1016: Part107.1:1991 and ISO501:1981. Before commencing the test, the furnace chamber lid should be opened and the temperature allowed to stabilise for no longer than 2 minutes. The test should be conducted with the furnace lid open.
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.
Page 28
6.0 Maintenance Measure the current drawn on each phase / cir- Power Consumption cuit...
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.
Page 30
6.0 Maintenance 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 10.0 for details of power limit settings.
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 Temperature Controller Replacement Refer to the controller instructions for more information on how to replace the temperature controller. Thermocouple Replacement Disconnect the product from the power supply. Remove terminal cover to gain access to the thermocouple connections. Make a note of the thermocouple connections.
7.0 Repairs and Replacements 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.
8.0 Fault Analysis 8.0 Fault Analysis Furnace Does Not Heat Up The temperature Check the fuses in the No power from the supply controller is OFF supply line The controller may be faulty There are no lights or not receiving a supply due glowing on the controller to a faulty switch or a wiring fault...
8.0 Fault Analysis Product Overheats Product only heats up The controller when the instrument shows a very high The controller is faulty switch is ON temperature The thermocouple may be The controller faulty or may have been shows a low removed out of the heating temperature chamber...
9.0 Wiring Diagrams 9.0 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...
10.0 Fuses and Power Settings 10.0 Fuses and Power Settings 10.1 Fuses F1: 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.
Page 39
11.0 Specifications 11.0 Specifications Carbolite Gero reserves the right to change the specification without notice. Model Max Temp (°C) Max Power (kW) Chamber Size (mm) Net Weight (kg) Swelling Number Furnace 70 dia x 80 deep 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...
Page 41
Notes Service Record Engineer Name Date Record of Work...
Page 42
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.
Need help?
Do you have a question about the CARBOLITE GERO SNF and is the answer not in the manual?
Questions and answers