VERDER CARBOLITE GERO TZF 12/75/700 Installation, Operation And Maintenance Instructions
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VERDER CARBOLITE GERO TZF 12/75/700 Installation, Operation And Maintenance Instructions

1200 c tube furnace (3-zone) + 3508 controller + 3216cc end zone controllers
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Installation, Operation and Maintenance Instructions
1200 °C Tube Furnace (3-zone) - TZF Model: 700mm
3508 Controller + 3216CC End Zone Controllers
TZF 12/75/700 + 3508 Controller + 3216CC
End Zone Controllers
MEN-TZF12075-09_3508_3216CC
19-06-2019
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Summary of Contents for VERDER CARBOLITE GERO TZF 12/75/700

  • Page 1 Installation, Operation and Maintenance Instructions 1200 °C Tube Furnace (3-zone) - TZF Model: 700mm 3508 Controller + 3216CC End Zone Controllers TZF 12/75/700 + 3508 Controller + 3216CC End Zone Controllers MEN-TZF12075-09_3508_3216CC 19-06-2019...

  • 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 3.8.9 To run a different program (P10 and P25) 3.8.10 Program Status 3.8.11 Program Hold with Holdback 3.8.12 Power Failure Recovery 3.8.13 Alarms 3.8.14 Program Example 1 3.8.15 Program Example 2 Controller Options 3.9.1 Digital Communications - RS232 3.9.2 Digital Communications - RS485 3.9.3 Comms Address 3.9.4...
  • Page 4 5.5.1 Setpoint Ramp Rate 5.5.1.1 Setting Setpoint Ramp Rate 5.5.1.2 Running with Ramp Rate 5.5.2 Maximum Output Power 5.5.3 Customer ID 5.5.4 Units 5.5.5 Language Timer 5.6.1 Setting the Timer 5.6.2 Dwell Timer 5.6.3 Delayed Switch On Timer 5.6.4 Soft Start Timer Running a Timer 5.7.1 Dwell Timer...
  • Page 5 6.2.4 Over-Temperature Alarm 6.2.5 Resetting the Over-Temperature Alarm 6.2.6 Sensor Break Audible Alarm Navigation Diagram 7.0 Operation Operating Cycle Control Method 3-Zone Control Methods A. Back-to-Back Thermocouples B. Retransmission of Setpoint C. Independent Control General Operating Advice Operator Safety Tube Life Pressure Power Adjustment 7.9 Running at Low Temperatures...
  • Page 6 11.1 WC-13-01 11.2 WC-13-31 11.3 2- and 3-phase With Neutral 11.4 Independent Zones (control method C) 11.5 Control by Broadcast Comms (control method B) 12.0 Fuses and Power Settings 12.1 Fuses 12.2 Power Settings User Power Setting Adjustments 13.0 Specifications 13.1 Environment...

  • Page 7: Symbols And Warnings

    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. Heat switch: the switch disconnects power to the heating elements;...
  • Page 8 1.0   Symbols and Warnings Caution – Double Pole/Neutral Fusing...

  • Page 9: Installation

    2.0   Installation 2.0 Installation Unpacking and Handling When unpacking or moving the product always lift it by its base or by both ends of the main body. Never lift it by its work tube or the surrounding insulation. Use two or more people to carry the product and control box.
  • Page 10 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. If the product is supplied with a work tube or any accessories fit these into position. For optimum temperature uniformity, insulating plugs should be placed in the tube ends as shown in fig.1.
  • Page 11 2.0   Installation Fig 1 - Insulating Plug (standard length tube) Tube Insulating Plug Stem Fig 2 - Insulating Plug (long work tube)

  • Page 12: Electrical Connections

    2.0   Installation Clamp Seal plate 'O' Ring seal D Seal sleeve Clamp seal End plate Clamp End plate Clamp seal (between Seal sleeve and Clamp D Seal sleeve Seal plate & 'O' Ring seal (underneath clamp) Tube Fig 3 'Twin Clamp' End Seal For assembly details refer to the separate work tube end seal manual.
  • Page 13 2.0   Installation The product covered by this manual normally requires a single phase A.C. supply, which may be Live to Neutral non-reversible, Live to Neutral reversible or Live to Live. Some models may be ordered for 3-phase use, which may be star or delta. Check the product rating label before connection.
  • Page 14 2.0   Installation 3-phase L1 Black to phase 1 Black to phase 2 Black to phase 3 Light Blue to neutral (except delta) Green/ Yellow to earth (ground) DO NOT connect a product ordered for three phase use to a single phase supply or to the wrong type of three phase supply.

  • Page 15: 3508 Controller

    3.0   3508 Controller 3.0 3508 Controller PID control This controller uses PID (Proportional Integral Derivative) temperature control. This type of control uses a complex mathematical control system to adjust the heating power and achieve the desired temperature. 3508P1 The 3508P1 is a digital temperature controller which uses PID algorithm to give excellent temperature control when properly set.

  • Page 16: Basic Operation

    3.0   3508 Controller Basic Operation Alarm Indicator Power Output Indicator Not Used Runs, Holds, Resets the current program Page Scroll Down Power Output Percentage Program Setpoint Temperature (PSP) when a program is running Setpoint Temperature (SP) when basic controlling...

  • Page 17: Controller Layout

    3.0   3508 Controller Measurement Temperature Measurement Units 3.5.1 Controller Layout 3.5.2 Keys A/ Man Disabled Runs, Holds or Resets the current program. Hold down for 3 RUN/ HOLD seconds to Reset. Scrolls through the page headings. Hold down for 3 seconds Page Key to access further levels, pass codes are required.

  • Page 18: Resetting The Programmer

    3.0   3508 Controller The controller will immediately attempt to reach the set temperature and maintain it. This will cause the product to heat as quickly as possible which may not be appropriate where the product contains sensitive ceramic components. For products with ceramic components, e.g.

  • Page 19: Setting Up Controller

    3.0   3508 Controller To Enter Level 2: 1. Press and hold page for 3 seconds. The display will show “Access Goto Level 1” 2. Press up to select level 2. After a short pause the display will show “Access Pass code”. 3.

  • Page 20: Units

    3.0   3508 Controller 3.7.3 Units Press page until "Units" is displayed. Press up or down to select: Celsius Fahrenheit Kelvin 3.7.4 Language The text on the 3508 Controller can be shown in different languages, this can only be set at the factory and therefore must be specified at the time of placing an order. Programming 3.8.1 Programming Notes Programs can be created in Level 1 or Level 2 of the 3508 Controller.

  • Page 21: Holdback

    3.0   3508 Controller To alter parameters or segments of an operating program, this program must be held or reset. Press RUN/ HOLD to pause the program, or press RUN/ HOLD for 2 seconds to reset. 3.8.2 Holdback Holdback can be used to prevent the program from operating ahead of the actual heating or cooling.

  • Page 22: Program Cycling

    3.0   3508 Controller 4. ‘Dev Lo’ Wait until the measured temperature drops below a fixed* threshold by an amount ‘WaitVal’ set for that segment. * The fixed threshold used by deviation parameters is set in the configuration level of the programmer and if required should be requested when purchasing a product from Carbolite Gero.

  • Page 23: Running A Program

    3.0   3508 Controller Holdback Type Press scroll until the display shows 'Holdback Type'. If required, press up or down to select 'Off', 'Low', 'High' or 'Band'. Target Setpoint (Visible only for Rate, Time and Step segments) Press scroll until the display shows 'Target SP'. Press up or down to set a value.

  • Page 24: To Pause (Hold) A Program

    3.0   3508 Controller 3.8.7 To pause (hold) a program Press RUN/HOLD Press page until 'Program Status Reset' appears Press scroll until the cursor moves to 'Reset' Press up or down to select 'Hold' RUN/HLD will be displayed 3.8.8 To stop and reset a program Press and hold RUN/HOLD Press page until 'Program Status Reset' appears...

  • Page 25: Program Hold With Holdback

    3.0   3508 Controller Current program number (P10 and P25 only) Current segment number Time remaining for that segment Further presses of the scroll key while a program is operating will reveal additional information: Status. This can be changed to 'Hold', 'Reset' or 'Run' by pressing up or down Program Setpoint (PSP) Current Segment Type.

  • Page 26: Program Example

    3.0   3508 Controller ALM (Alarm) indicator. The alarm may also switch an output – usually a relay to allow external devices to operate when an alarm occurs. Alarms only operate if they have been configured and are dependent on customer requirements. How to acknowledge an alarm will depend on the type of latching which has been configured.
  • Page 27 3.0   3508 Controller 12. Press scroll until 'End Type' is displayed. Press up or down to select 'Reset' 13. Press page and scroll together to return to the home display. To run the program either press RUN/HOLD or: 14. Press page until 'Program Status' is displayed 15.
  • Page 28 3.0   3508 Controller Time Display Examples 10:05:3 Min/Sec/10th Sec 21:10:05 Hour/Min/Sec 196:10 Hour/Min Segment Type 'Rate' Type 'Dwell' Type 'Step' Type 'Dwell' Type 'Time' Type 'End' Target 400°C Duration 30 min Target 600° Duration 30 min Target 200° End Type 'Reset' Rate 5.0°/Min Time 120 min 3.8.15 Program Example 2...
  • Page 29 3.0   3508 Controller 5. Press scroll until 'Cycles' is displayed. Default ‘1’ 6. Press scroll until 'Segment 1' is displayed 7. Press scroll until 'Segment Type' is displayed. Press up or down to select ‘Time’ 8. Press scroll until 'Holdback Type' is displayed. Default ‘Off’ 9.

  • Page 30: Controller Options

    3.0   3508 Controller Segment Type 'Time' Type 'Rate' Type 'Step' Type 'Dwell' Type 'Call' Type 'End' Target 600°C Target 400°C Target 200°C Duration 30 min Call prog 3 End Type 'Dwell' Duration 30min Rate 2°C/min H back type 'High' Call cycles 2n * Segment 4 'Holdback Value' 5°C ** P10 and P25 only *** Program 3 Example...

  • Page 31: Digital Communications - Rs232

    3.0   3508 Controller 3.9.1 Digital Communications - RS232 If the RS232 option is supplied, the furnace is fitted with one sub-miniature D- socket connected to the controller comms module. RS232 is suitable for direct connection to a personal computer (PC) using a “straight through” cable as follows (the linked pins at the computer end are recommended but may not be necessary).

  • Page 32: Remote Input And Output (Analogue Communications)

    3.0   3508 Controller Temperature Controller Fuse (2A) Supply Load Normally open relay contacts Relay Output 240V 2A The purpose of the 2 amp fuse is to break the circuit to prevent overloading on the circuit due to high voltage. The instrument configuration and parameters available to the operator depend on the customer requirements.

  • Page 33: Temperature Controller Replacement

    3.0   3508 Controller set to on, then the relay closes during the segment and a small 1 appears in the top left of the screen. If more than one program segment output is fitted, then there are extra boxes depending on how many event outputs there are. 3.10 Temperature Controller Replacement Before handling the controller: wear an anti-static wrist strap or...

  • Page 34: Operator Level 1 - No Program Running

    3.0   3508 Controller 3.11.1 Operator Level 1 - No Program Running Home Display Controller identity when using more than one controller Read Only Black = Progress Page Key White = Return Scroll Key Visible Parameters depend on the Segment Type...

  • Page 35: Operator Level 1 - Program Running

    3.0   3508 Controller 3.11.2 Operator Level 1 - Program Running Home Display Controller identity when using more than one controller Read Only Black = Progress Page Key White = Return Scroll Key See previous diagram: Operator Level 1- No Program Running...

  • Page 36: Supervisor Level

    3.0   3508 Controller 3.11.3 Supervisor Level 2 To enter Level 2 Scroll Key Level 2 Locked before Pass Code entered Level 1 Home Display Unlocked Level 2 Home Display Black = Progress See previous diagram: Page Key Operator Level 1- No Program Running Hold Page Key for 3 seconds If configured Arrow Key...

  • Page 37: 3508 Dual Loop Cascade Control (If Fitted)

    4.0   3508 Dual Loop Cascade 4.0 3508 Dual Loop Cascade Control (if fitted) Principle of Cascade Control When cascade control is fitted, the Load Loop 3508 senses the temperature of the workload, and the Element Loop 3508 senses the element temperature. Depending on the oven or furnace model, the Load Thermocouple may be in a fixed position, or may be movable.
  • Page 38 4.0   3508 Dual Loop Cascade Home Display View Load Loop View Element Loop View The Element Loop should never be adjusted. Note that the elements usually run at a higher temperature than the load.
  • Page 39 4.0   3508 Dual Loop Cascade Because the details of the customer’s cascade application (in particular the nature of the load) are generally not known, the feed forward parameter (FF Trim) is made easily accessible in level 2 (Refer to instrument operating instructions). Its default setting is 2%.
  • Page 40 4.0   3508 Dual Loop Cascade Power Limit View...

  • Page 41: Bypassing Cascade Control

    4.0   3508 Dual Loop Cascade Bypassing Cascade Control This applies where the Control Thermocouple is a removal probe (e.g. in a tube furnace), or where for other reasons it may be required to operate the furnace or oven directly from the Element Loop. To operate without Cascade Control the load thermocouple has to remain connected at all time;...

  • Page 42: 3216Cc Controller

    5.0   3216CC Controller 5.0 3216CC Controller 3216CC This section should be disregarded unless the controller is used as an independent end zone controller. The 3216CC Controller is a digital temperature controller which uses PID algorithms to give excellent temperature control when properly set. This controller can only be used as a simple temperature controller, it cannot be programmed.

  • Page 43: Keys

    5.0   3216CC Controller 5.3.2 Keys The page key is used to access level 2 when held down Page Key for 3 seconds. Scroll Key The scroll key is used to scroll through parameters. When pressed simultaneously the ACK function is used Page and Return to the Home Menu Scroll...

  • Page 44: Understanding User Levels

    5.0   3216CC Controller 5.4.4 Understanding User Levels There are two user levels in the controller; Level 1 (Operator) and Level 2 (Supervisor). Level 1 (Operator) is for the day to day operation of the controller. These parameters are not protected by a security code. Level 2 (Supervisor) provides access to additional parameters.

  • Page 45: Setting Up The Controller

    5.0   3216CC Controller If while navigating the controller, a parameter has been passed or you need to access parameters which would be at the end of a scroll list, press and hold scroll and use to return to a previous parameter. Setting up the Controller Before using the controller (or during its lifetime) certain parameters may have to be set, depending on specific requirements.

  • Page 46: Maximum Output Power

    5.0   3216CC Controller To cancel the ramp rate, press and hold the up and down keys until the "Run" indicator turns off. 5.5.2 Maximum Output Power Press scroll until the display shows OP.HI <OUTPUT HIGH>. Use the up and down keys to select the output power required as a percentage.

  • Page 47: Dwell Timer

    5.0   3216CC Controller • Delayed switch on timer • Soft start timer None The timer is turned off, no timer configurations are available, the instrument works as a simple setpoint controller. Press scroll until the display shows TM.CFG <TIMER CONFIGURATION>. Using the up down select NONE.

  • Page 48: Soft Start Timer

    5.0   3216CC Controller Press scroll until the display shows DWELL < SET TIME DURATION >. Use the up down to enter the time duration required before the output power switches on. 5.6.4 Soft Start Timer The Soft Start Timer is used to start a process at a reduced setpoint and power. The Soft Start Setpoint is used as a threshold only and is not a control point.

  • Page 49: Dwell Timer

    5.0   3216CC Controller Acknowledge any timer after a timer has timed out using ACK function (see section 5.3.2) by pressing the simultaneously. 5.7.1 Dwell Timer Operation Action Indication Indicator – RUN = ON Press and quickly release To RUN Timer Scrolling Display –...

  • Page 50: Running Dwell Timer With Ramp Rate

    5.0   3216CC Controller 5.7.3 Running Dwell Timer with Ramp Rate Set the ramp rate as outlined in section 5.5.1 Set the dwell time as outlined in section 5.6.2. When the timer is set to operate with a set ramp rate, the timer will not start to count down until the setpoint has been reached with the ramp, at which time the timer will begin time count down.

  • Page 51: Running Delay Timer With Ramp Rate

    5.0   3216CC Controller Indicator – RUN = OFF Timer Ended Scrolling Text – Timer End Indicator – RUN = ON To re-RUN Timer Press and quickly release Scrolling Display – Timer Running Static Text – OFF 5.7.6 Running Delay Timer with Ramp Rate Set the ramp rate as outlined in section 5.5.1.

  • Page 52: Power Failure While Using Delay Timer

    5.0   3216CC Controller 5.7.8 Power Failure While Using Delay Timer If there is a power failure while the timer is operating and the power is subsequently restored, the timer will reset and will re-run from the power on time. 5.7.9 Soft start Timer Operation Action Indication...

  • Page 53: Alarms

    5.0   3216CC Controller 5.7.13 Alarms Alarms are used to alert the operator when a pre-set level has been exceeded or a function error has occurred such as a sensor break. They are indicated by a scrolling message on the display and a flashing red ALM (Alarm) indicator. The alarm may also switch an output –...

  • Page 54: Digital Communications - Rs485

    5.0   3216CC Controller 5.8.2 Digital Communications - RS485 If an RS485 option is supplied, the furnace is fitted with two D-sockets. Connection between products is by “straight” cable as follows: Product end of cable RS485 Cable: Computer end of cable product to PC 9-pin (25-pin) female female (25-pin) 9-pin...

  • Page 55: 3216Cc Navigation Diagram

    5.0   3216CC Controller Ease apart the two lugs at the side; grip the instrument and withdraw it from its sleeve; push in the replacement. 3216CC Navigation Diagram...

  • Page 56: 2132 Over-Temperature Controller Description (If Fitted)

    6.0   2132 Over-Temperature 6.0 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.

  • Page 57: Operation

    6.0   2132 Over-Temperature 6.2.2 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;...

  • Page 58: Audible Alarm

    6.0   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 6.2. Note: the alarm may sound during controller start-up.

  • Page 59: Operation

    7.0   Operation 7.0 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.

  • Page 60: Back-To-Back Thermocouples

    7.0   Operation Note: Option A is NOT applicable when using the CC-T1 controller Option B is NOT applicable when using the Eurotherm 2132 End Zone Controller A. Back-to-Back Thermocouples This is the most commonly supplied option. The centre zone of the tube furnace is controlled directly by the centre zone temperature controller.

  • Page 61: Independent Control

    7.0   Operation It is possible to set an offset (local trim) between the centre and end zone controllers. This can be either a positive or negative difference from the centre zone temperature. Once entered, this offset will always be added to, or subtracted from, the retransmitted setpoint temperature.

  • Page 62: Tube Life

    7.0   Operation Switch off the heater switch whenever loading or unloading the product. The elements are isolated when the heater switch is OFF. This switch cuts both sides of the circuit via a contactor. Tube Life A ceramic work tube may crack if work pieces are inserted too quickly or at temperatures below 900 °C (when the tube is more brittle).

  • Page 63: Power Adjustment

    7.0   Operation Power Adjustment The product control system incorporates electronic power limiting. The power limit parameter OP.Hi is accessible to the operator and can be used to adjust the product to the actual supply voltage. Some models covered by this manual are fitted with 208 V elements and are designed for use over the range of voltages 200 V- 250 V;...

  • Page 64: Maintenance

    8.0   Maintenance 8.0 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 65 8.0   Maintenance rect positioning Seals (if fitted) Check all seals and O-rings and clamps Performance Element Circuit Electrical measurement Measure the current drawn on each Power Consumption phase / circuit Check whether the cooling fans are work- Cooling Fans (if fitted)

  • Page 66: Cleaning

    8.0   Maintenance 8.2.1 Cleaning 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. 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.

  • Page 67: Repairs And Replacements

    9.0   Repairs and Replacements 9.0 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 68: Solid-State Relay Replacement

    9.0   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.

  • Page 69: Element Replacement

    9.0   Repairs and Replacements Element Replacement See section 9.2 - 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.

  • Page 70: Fuse Replacement

    9.0   Repairs and Replacements Fuse Replacement Fuses are marked on the wiring diagram with type codes, e.g. F1, F2. For more information on fuses refer to section 12.0. 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 71: Fault Analysis

    10.0   Fault Analysis 10.0 Fault Analysis Furnace Does Not Heat Up The HEAT The heating element Check also that the SSR is working light is ON has failed correctly The controller shows a The HEAT The thermocouple has broken or has very high temperature light is OFF a wiring fault...

  • Page 72: Product Overheats

    10.0   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...

  • Page 73: Wiring Diagrams

    11.0   Wiring Diagrams 11.0 Wiring Diagrams 11.1 WC-13-01 Connections below show single phase with indirect safety switches and over- temperature control.
  • Page 74 11.0   Wiring Diagrams 11.2 WC-13-31 Connections below show single phase with indirect safety switches and over- temperature control.

  • Page 75: 2- And 3-Phase With Neutral

    11.0   Wiring Diagrams 11.3 2- and 3-phase With Neutral Each SSR is connected to a different phase. The control circuit is taken between L1 and Safety switch A applies for 2-phase. Safety switch B applies for 3-phase. If type F1 fuse is present, one per phase if fitted. If type F2 fuse is present, one is fitted;...

  • Page 76: Fuses And Power Settings

    12.0   Fuses and Power Settings 12.0 Fuses and Power Settings 12.1 Fuses F1-F3: 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 77: User Power Setting Adjustments

    12.0   Fuses and Power Settings User Power Setting Adjustments Date % Power Comments Note: If a new set of elements are fitted then return the power settings to the original value. Please refer to the rating label for product specific information.

  • Page 78: Specifications

    13.0   Specifications 13.0 Specifications Carbolite Gero reserves the right to change the specification without notice. Heated Work Tube Work Tube Model Temp Power Length Weight Bore (mm) Length (mm) (°C) (kW) (mm) (kg) Tube furnaces with a ceramic work tube wound with resistance wire. TZF 12/75/700 1200 Note: Weights are approximate for horizontal models and do not include fittings or...
  • Page 79 Notes Service Record Engineer Name Date Record of Work...
  • Page 80 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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