Muffle Furnace Manual
Contents
1. Wiring Diagrams FB 1400 models 27 EXPLODED VIEW 28 re A A Ya NANNA PER x Replacement Parts List 2n A NN Rp SHE 21 22 22 Description Heating element 100V FB1314M Heating element 120V FB1315M Heating element 208V FB1318M Heating element 240V FB1310M 33 Heating element 100V FB1414M Heating element 120V FB1415M Heating element 208V FB1418M Heating element 208V FB1410M 33 Thermocouple FB1300 models Thermocouple FB1400 models Solid State Relay all models Door Switches all models Control FB1300M 8 FB1400M models except FB1410M 33 Control FB1400M 33 model only Insulation Btm all FB1300 models Insulation Btm all FB1400 models Insulation Back all FB1300 models Insulation Back all FB1400 models Insulation Top all FB1300 Insulation Top all FB1400 Insulation Hearth Collar FB1300 Insulation Hearth Collar FB1400 Insulation Sides FB1300 Insulation Sides FB 1400 Cycle Light amber all 100V 8 120V Cycle Light amber all 208V 8 240V Terminal Block Terminal Block Power Switch 100 amp 120V models Power Switch 208 8 240V models Door Assembly FB 1300 all models Door Assembly FB 1400 all models Element Sleeving all models Element Sleeving all FB1300 models Hearth Plate all FB1300 models Hearth Plate all FB1400 models Filter all 33 models Fuse Holder all models2. Controller Parameters Home display C Temperature units in Celsius Temperature units can not be changed without entering the configuration Contact Customer Service if a dif ferent temperature unit is required OP output power demand IdHi Deviation high alarm Al List IdHi Deviation high alarm Note The following alarm messages are factory default settings and may vary if you have changed the configuration of your controller IDHi 50 C 2FSH 1125 C SINGLE SETPOINT CONTROLLER Atun List tunE One shot autotune enable Pid List Pb Proportional band in display units ti Integral time in seconds td Derivative time in seconds ACCS List Code Access code Code need ed to enter or change the other configuration parameters which are not normally accessi ble Not accessable Alarms The controller will flash an alarm message in the home display if an alarm condition is detected 2FSH Measured value full scale high alarm IdHi Measured value deviation high alarm S br Sensor break check that sensor is con nected correctly L br Loop break check that the heating cir cuits are working properly Ld F Heater Circuit fault indication of either an open or short solid sate relay a blown fuse missing supply or open circuit heater 12 SINGLE SETPOINT CONTROLLER Furnace must be at ambient temperature before starting a tune Sensor Break Protection
3. Fuse 10 amp 25 x 1 25 Buss Type ABC 240V amp 208V models Fuse 15 amp 25 x 1 25 Buss Type ABC 120V models Fuse 20 amp 25 x 1 25 Buss Type ABC 100V models Dial Plate Label FB1300 Dial Plate Label FB1400 ie eier e Quantity Required Na ld sch dl zk sch sch do do sch dl zk MA N dd de do sch sch do do sch zk MI sch dl do sch do do sch sch dodo Part Number EL140X2 EL44X1 EL44X3 EL44X2 EL186X2 EL48X1 EL48X3 EL48X2 TC1256X1 TC746X1A RYX34 SWX163 CN71X81 CN71X101 JC44X1 JC48X2 JC44X4 JC48X1 JC44X3 JC48X3 HC44X1 HC48X1 JC460X2 JC48X4 PLX76 PLX82 TRX136 TRX96 SWX143 SWX144 DR347X1A DR348X1A SL745X1 SL59X2 PH44X1 PH48X1 CAX98 FZX26 FZX30 2 58147 FZX29 DLX248 DLX249 21 22 One Year Limited Warranty BARNSTEAD THERMOLYNE CORPORATION BARNSTEAD warrants that if a product manufactured by Barnstead shall be free of defects in materials So workmanship for one 1 year from the first to occur of i the date the product is sold by BARNSTEAD or ii the date the product is purchased by the original retail cus tomer the Commencement Date Except as expressly stated above BARNSTEAD MAKES NO OTHER WARRANTY EXPRESSED OR IMPLIED WITH RESPECT TO THE PRODUCTS AND EXPRESSLY DIS CLAIMS ANY AND ALL WARRANTIES INCLUDING BUT NOT LIMITED TO WARRANTIES OF DESIGN MERCHANT ABILITY AND FITNESS FOR A PARTICULAR PURPOSE An authorized representative of BARNSTE
4. Poor thermocouple connection Improper loading procedures Poor ventilation of base Thermocouple connections reversed Indicated by downscaling of temperature on display Controller malfunction Corrective Action Check power source and fuses or breakers Repair electrical hookup Replace thermocouple Replace fuse s Replace controller Re align or replace door safety switches Replace output relay Re align or replace door switches Install line of sufficient size and proper voltage Isolate furnace from other electrical loads Lighten load in chamber Install proper element Keep furnace under maximum temperature Enclose material in container Clean up spills in and on chamber Ventilate chamber by opening door slightly when heating known harmful reagents Replace insulation material Replace thermocouple Tighten connections Use proper loading procedures Clear area around furnace base Reconnect thermocouple correctly Replace controller Maintenance and Servicing A Warning Disconnect the furnace from the power supply before servicing Refer servicing to qualified personnel Note Perform only maintenance described in this manual Contact an authorized dealer or our factory for parts and assistance Note It is seldom necessary to dis connect the thermocouple from the controller if the thermocou ple is in good condition To 1 Replace Heating Element
5. BARNSTEAD THERMOLYNE CORPORATION Type FB1300 4 FB1400 Furnaces OPERATION AND REPAIR MANUAL AND PARTS LIST SERIES 1256 amp 1257 Model Numbers FB1310M FB1310M 26 FB1314M FB1315M FB1318M FB1310M 33 FB1410M FB1410M 26 FB1414M FB1415M FB1418M FB1410M 33 LT1256X1 e 8 27 01 Serial Number Table of Contents SEI iter Le 3 Important Informaticos iii 3 VIe gt S N SEERE alias Atlan Male iia inl an eae tan anid adh 4 Urteel EE EE 5 intended Usumacinta rea baaa 5 General Usage ascii no arios 5 Principles Of Operation vari na Haken kabel hl De des E 5 General Specifa OS a a a a aa a a a a a aa aaa a aA Aa a aa a aA a Aaaa 6 Declaration Of CONO MY ista italia 7 let Le ue ctra oie idas 8 dE le WE EE 9 AER eebe dE E EE EE 9 ST ee Renee EE 9 LEET eet ee egene 10 POWErZSWILCH ae EE e dedo AO e 10 Ec Bi TEE EE EE EEN 10 Door Safety Switch items tai haa 10 Single Setpoint Controller AA 10 Basic Operation a oo Se 11 Buttons and pg ee eg ee ee ENEE DEE ee ee E Ee ees 11 To Eegen ee Un 12 TO View the Display Units 00 ita eee 12 To View the Yo Output POW hiss nn dida EE 12 Controller Parameters caia ta atada 12 Adam camilla dt dt dica 13 Sensor Break Protection oooonnccccnnnnnnncccnncccnnnccncnnnrccn nc 14 Overt Temperature Protection OT 14 RE Tell RE 15 Fur ace LO AGING void nia tintas 16 Preventive Maintenance cecccccceceescceceeceeeceeeeeeeeneeeeeeseeeceeeeeseaaaaaessaeacaaaessaeceae
6. Set furnace on its top Warning Disconnect the furnace from the 2 Remove thermocouple cover If equipped power supply before servicing 3 Remove screw and clamp holding the ther mocouple then grasp the thermocouple at the bend where it enters the chamber and pull it straight back from the furnace Retain porcelain insulator 4 Remove bottom cover 5 Disconnect the thermocouple from the ter Note minal block by removing the screws on the If the thermocouple touches metal terminals Pull the thermocouple through this could short out the signal the hole in the furnace base and discard causing the control to display room l temperature This could cause the 6 Insert the new thermocouple into the back nents steel back plate to prevent the lead wires from touching metal 22 Note If the control temperature display moves downward the thermo couple leads are reversed A Warning Disconnect furnace from power supply before servicing MAINTENANCE AND SERVICING 7 Thread the thermocouple through the hole in the base which has a nylon insulator replace clamp and screw 8 Bend the thermocouple sharply toward ter minal block 9 Secure the two yellow wires marked together on the terminal block Secure the two red wires together on the adjacent terminal Make sure connections are secure to terminal block A polarity test of the thermocouple and lead wire is easily made with the
7. Set the furnace on its top See Figure 3 Remove thermocouple cover If equipped Remove screw and clamp holding ther mocouple then grasp the thermocouple at the bend where it enters the furnace chamber and pull straight back Retain porcelain insulator When the thermocouple tip is clear of the furnace back bend it out of the way Remove the screws holding the steel back plate to the case Remove the steel back plate Thermocouple cover XY Porcelin insulation Step 1 if equipped Step 3 Heating element with rough side up Straight edge or board Step 4 Hearth Plate New Formed Element Step 6 Figure 3 Replacement of a Heating Element 19 MAINTENANCE AND SERVICING an Note The hearth plate contains no heating coil and may be saved for re installation if it is in good condition The hearth plate is replaceable independent of the heating element 6 Remove the back insulation block by open ing the door and gently pushing it out Support this insulation block while removing it as it is quite soft and easily crumbled at the edges Remove bottom cover to obtain access to terminals These steps will expose the heating element leads and insulating bushings in the bottom plate of the furnace 8 10 11 12 Cut the element leads between the element and the terminal block There are two leads The element and hearth
8. This controller provides sensor break protection in the event the thermocouple opens lf an open ther mocouple condition occurs the digital display will blink S br and the power to the heating element will be shut OFF Cycle light will extinguish Over Temperature Protection OTP The OTP will be in effect during any alarm condi tion when the temperature of the furnace has devi ated beyond the limit The Deviation High alarm is the only alarm value which can be changed To change it press the SCROLL button until IdHi appears on the display Press the UP or DOWN button to select the OTP value you desire We rec ommend a value of 20 above your working tem perature to provide protection for your workload Tuning This controller incorporates a self tuning feature which determines the optimum control parameters for the best temperature accuracy with your load and setpoint Use this feature the first time you use your furnace and each time you change either your setpoint or the type of load you are heating Barnstead Thermolyne recommends you use this feature to provide the best temperature accuracy the controller can attain To use the tuning feature 1 Adjust the setpoint to your desired value 2 Press the PAGE button until display reads Atun Tune has completed when tunE stops flashing on display SINGLE SETPOINT CONTROLLER Press the SCROLL button Display will read tunE
9. operating properly Power Switch Both the ON OFF power switch and the digital display will illuminate when power is switched ON The furnace will begin to heat to the con troller s current setpoint See the instructions for your type of controller for information on checking and setting the setpoint Cycle Light The amber cycle light will illuminate whenever the power is being applied to the heating ele ments The cycle light will turn on and off as the furnace reaches the setpoint Door Safety Switch The door safety switch removes power from the heating elements when the door is opened Open and close the door a few times note that the amber CYCLE light will switch off when the door is opened If this condition is not true consult the Troubleshooting section before proceeding This check must be done when the furnace is heating and the cycle light is illuminated Single Setpoint Controller Temperature Output 1 Output 2 Display E EUROTHERM 7116 sat Display ore 4 Window PAGE UP ARROW Button Button SCROLL DOWN ARROW Button Button Single Setpoint Models Y Note If at any time you want to return to the HOME DISPLAY simultane ously press the PAGE and SCROLL buttons The single setpoint model furnace controller is a single setpoint controller which provides a single digital display to indicate the current chamber temperature or setpoint temperature This temperature controller features s
10. 9 1060 1 50 60 FB1318M 208 5 1 1060 1 50 60 Temperature Operating Range continuous 982 C intermittent 1100 C Environmental Conditions Operating 17 C 27 C 20 80 relative humidity non condensing Installation Category II over voltage in accordance with IEC 664 Pollution Degree 2 in accordance with IEC 664 Altitude limit 2 000 meters Storage 25 C 65 C 20 80 relative humidity FB1400 Models Dimensions handle not included Chamber 5 00 W x 4 25 H x 6 00 D 12 7 x 10 8 x 15 2 cm Overall 9 7 W x 15 8 H x 11 1 D 24 6 x 39 0 x 28 3 cm Weight 23 Ib 10 4 kg Electrical Ratings Model Volts Amps Watts Phase Frequency FB1410M 220 240 6 3 1520 1 50 60 FB1410M 26 220 240 6 3 1520 1 50 60 FB1410M 33 220 240 6 3 1520 1 50 60 FB1414M 100 14 5 1520 1 50 60 FB1415M 120 12 1450 1 50 60 FB1418M 208 7 3 1520 1 50 60 Temperature Operating Range continuous 982 C intermittent 1100 C Environmental Conditions Operating 17 C 27 C 20 80 relative humidity non condensing Installation Category II over voltage in accordance with IEC 664 Pollution Degree 2 in accordance with IEC 664 Altitude limit 2 000 meters Storage 25 C 65 C 20 80 relative humidity A GENERAL SPECIFICATIONS Declaration of Conformity Barnstead Thermolyne hereby declares under its sole responsibility that this product conforms with the techni cal requirements of the foll
11. plate unit may now be removed by pushing it straight back out of the furnace Use care not to damage the chamber insulation when removing the hearth plate and element as it can be reused if it has not been contaminat ed Remove the old element lead wire and power wires from the terminal block and save the sleeving for re installation on the new element leads Sleeving must be replaced if cracked or brittle New elements are shipped flat to protect them from damage in shipment and to save space in storage They must be formed before installation Place the element on a flat surface with the rough side up Place a board or other straight edge along one row of notches Gently bend the element along the straight edge The refractory cement will break along the row of notches MAINTENANCE AND SERVICING Make the bend 90 avoiding excessive bend ing The element wires will be exposed at the corner thus formed This will not affect its life or performance 13 Bend the other side of the element 14 Place the hearth plate across the open end of the U shaped element 15 Slide the element and hearth plate unit into the chamber pushing it firmly against the hearth collar Use care not to damage the soft insulation Remove any crumbs of insulation that may get between the unit and the hearth d collar Note Nicking or damaging the ele 16 Thread the element leads through the ceram ment leads will cause prem
12. use of a magnet On chromel alumel thermocouples and lead wire the non mag netic wire is positive and the magnetic wire is negative 10 Replace bottom plate 11 Replace thermocouple cover If equipped 12 Reconnect furnace to power supply 13 Test operation of furnace le Replace Insulation Remove thermocouple cover If equipped 2 Set furnace on its top and remove screw and clamp securing thermocouple then grasp thermocouple and remove by pulling it straight back Retain porcelain insulator 3 Remove back plate 4 Remove bottom cover 5 Disconnect the element leads from terminal block 22 MAINTENANCE AND SERVICING 242 Note Identify or mark wires discon nected to ensure proper place ment and connection when rein stalling 10 11 12 13 14 15 16 17 Disconnect thermocouple leads from terminal block Remove four nuts holding control section to furnace chamber Remove the ground nut Remove the control section from the furnace chamber Remove plates screws spacers and nuts Be sure to note how plates are assembled together for reassembly Remove back piece of insulation by opening door and pushing it out gently Remove bottom piece of insulation by lifting it out Remove element and hearth plate by pulling it straight back out of the furnace chamber Be careful not to damage elements Remove side insulating pieces To remove t
13. AD must perform all warranty inspections In the event of a defect covered by BARNSTEAD s warranty BARNSTEAD shall as its sole obligation and exclusive remedy provide free replacement parts to remedy the defective product In addition for products sold by BARNSTEAD within the continental United States or Canada BARNSTEAD shall provide provide free labor to repair the products with the replacement parts but only for a period of ninety 90 days from the Commencement Date BARNSTEAD s warranty provided hereunder shall be null and void and without further force or effect if there is any i repair made to the product by a party other than BARNSTEAD or its duly authorized service repre sentative ii misuse including use inconsistent with written operating instructions for the product mishan dling contamination overheating modification or alteration of the product by any customer or third party or iii use of replacement parts that are obtained from a party who is not an authorized dealer of BARNSTEAD Heating elements because of their susceptibility to overheating and contamination must be returned to the BARNSTEAD factory and if upon inspection it is concluded that failure is due to factors other than excessive high temperature or contamination BARNSTEAD will provide warranty replacement As a condition to the return of any product or any constituent part thereof to BARNSTEAD s factory it shall be sent prepaid and a prior written au
14. Press the UP or DOWN button to select on Simultaneously press the PAGE and SCROLL buttons to return to the HOME DISPLAY The display will alternately flash between tunE and the HOME DISPLAY while tuning is in progress The controller will then turn the heat ing on and off to induce an oscillation When the measured value reaches the required setpoint the first cycle will end Tuning will be complete after two oscillation cycles and then the tuner will turn itself off Normal control function will resume after the controller calculates tuning parameters 15 Furnace Loading Caution Do not overload your furnace chamber or allow the load to touch the thermocouple If the load is to be heated uniformly it should not occupy more than two thirds of any dimension of the chamber Failure to observe these cautions could result in damage to furnace components and or load 16 For best results of furnace loading use less than two thirds of any dimension of the chamber Maintain a 3 4 clearance between the load and the sides of the chamber If you are heating a number of small parts spread them throughout the mid dle two thirds of the chamber Keep objects away from thermocouple Raise your load up off the furnace floor with small pieces of ceramic or a hearth plate to promote even heating Use insulated tongs and mittens when loading and unloading furnace Always wear safety glasses P
15. a ic bushings Bend the leads so they lie close ture element failure to the refractory plate and the bottom insula tion block The easiest and safest way to do this is to press the wire flat with a stick or blunt pusher Do not use a sharp object or nick the wire 17 Replace the sleeving and bend the lead 3 4 turn around the terminal screw Cut off the excess wire Replace power wires on top of element lead wires and tighten screw Do not cross the wire over itself around the terminal this makes it difficult to keep the connection tight and prevents good electrical contact If you have excess wire cut it off Make sure element lead wires are not touching any other wires 18 Replace the back insulation block and back plate 19 Examine the thermocouple ana if it is good reinsert it into the chamber It should extend 21 MAINTENANCE AND SERVICING about 1 1 2 into the chamber Make sure porcelain insulator is in place for the ther mocouple to pass through on the steel back plate Replace clamp and screw Excessive scaling pitting or cracks are some indications that the thermocouple may need to be replaced 20 Replace bottom cover of control unit 21 Replace thermocouple cover 22 If replacement of back insulation is neces sary carefully redrill hole for thermocou ple using back cover as guide 23 Reconnect furnace to power supply 24 Test operation of furnace To Replace Thermocouple MN 1
16. bients above this level may result in damage to the controller Electrical Connections The electrical ratings are located on the spec ification plate on the back of the furnace Consult Barnstead Thermolyne if your electri O cal service is different than those listed on the Caution specification plate Be sure the front power switch is in the OFF position before connect ing the furnace to your electrical supply Allow at least six inches of space between the furnace and any com bustible surface This permits the heat from the furnace case to escape so as not to create a pos sible fire hazard N Warning To avoid electrical shock this fur nace must always use a properly grounded outlet of correct voltage and current handling capacity Operation All Modes N Warning To avoid personal injury do not use in the presence of flammable or combustible chemicals fire or explosion may result This device contains components which may ignite such materials VAN Hot Surface Caution Avoid Contact To avoid burns this furnace must not be touched on the exterior or interior surfaces during use or for a period of time after use N Warning Always wear safety glasses or a safety shield and high temperature gloves when loading or unloading the furnace Long sleeved fire retardant clothing and a fire retar dant apron is also recommended A Warning To avoid electrical shock the door safety switch must be
17. ck is heard from the switches when furnace door is approximate ly 2 from being completely closed Secure door switches to bracket 5 Place furnace upside down Reconnect the wires to new door switches 6 Replace bottom cover and place furnace upright 7 Reconnect furnace to power supply 8 Test operation of door switches as described in step 4 25 MAINTENANCE AND SERVICING A Warning Disconnect furnace from power supply before servicing A Warning Disconnect furnace from power supply before servicing 26A To To Replace Solid State Relay Place furnace upside down and remove the bottom cover Disconnect the wires from the solid state relay Identify or mark the wires disconnect ed to ensure proper placement and connec tion when re installing Remove solid state relay from bottom cover Note placement of solid state relay Install new solid state relay and reconnect wires Replace bottom cover and place furnace upright Reconnect furnace to power supply Replace Controller Place furnace upside down and remove bottom cover Disconnect wires from the controller Identify or mark wires disconnected to ensure proper placement and connection when re installing Remove the controller from bottom cover Install new controller and secure Reconnect wires identified in step 3 to new controller Replace bottom cover and place furnace upright Reconnect furnace to power supply
18. e silicosis The International Agency for Research on Cancer IARC has classified refractory ceramic fiber and fiberglass as possibly carcinogenic Group 2B and crystalline silica as carcinogenic to humans Group 1 The insulating materials can be located in the door the hearth collar in the chamber of the product or under the hot plate top Tests performed by the manufacturer indicate that there is no risk of exposure to dust or respirable fibers resulting from operation of this product under normal conditions However there may be a risk of exposure to respirable dust or fibers when repairing or maintaining the insulating materials or when otherwise disturbing them in a manner which causes release of dust or fibers By using proper handling proce dures and protective equipment you can work safely with these insulating materials and minimize any exposure Refer to the appropriate Material Safety Data Sheets MSDS for information regarding proper handling and recommended protective equipment For addi tional MSDS copies or additional information concerning the handling of refractory ceramic products please contact the Customer Service Department at Barnstead Thermolyne Corporation at 1 800 553 0039 Introduction Intended Use The FB1300 Model and FB1400 Model fur naces are general purpose laboratory and heat treating furnaces For optimum element life observe the following temperature ranges 100 C 212 F to 982 C 1800 F
19. eessaeeaeaeseaueeaeeeeseecegeesneeeaeeeeenes 17 PROUBISSMOOLING ii dl as 18 Maintenance and Servicing 244444440nnnnnnnnnannnnnnnnnannnnnnnnnnannnnnnnnnnnnnnnnnnnsnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnen 19 To Replace Heating Ele metiteeccc checccecteyecaceh eebe DEES ries LES reEAE Ro ikeinhkeinnn 19 To Replace Thermocouple seese een e aaa ETE E EE 22 To Repl ace Insulation 22 4 a adi E 24 To Replace Door Switches 220usnnensnnnnnnnnnennnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnn nenn 25 T R place Solid State Relay ssie iiaae a a naaa a a aaa raaa eisen eb 26 To Replace PC Board Controllert no coronan crac 26 Wiring elle ELE ita bated aes 27 EXPO MIS Wi E 28 Safety Information Alert Signals A Warning Warnings alert you to a possibility of personal injury Caution Cautions alert you to a possibility of damage to the equipment Note Notes alert you to pertinent facts and conditions TAN Hot Surface Hot surfaces alert you to a possibility of personal injury if you come in contact with a surface during use or for a period of time after use Important Information This manual contains important operating and safety information You must carefully read and understand the contents of this manual prior to the use of this equipment Your Thermolyne FB1300 Model or FB1400 Model Furnace has been designed with function reliability and saf
20. ensor break protection and self tuning capability Basic Operation When the controller is turned ON it will per form a short self test and then display the measured value process value in the HOME DISPLAY Buttons and Indicators OP1 Output 1 llluminates when the logic output is ON OP2 Output 2 Illuminates when the relay output is ON will go out during an alarm situ ation PAGE button Allows you to select a new list of parameters SCROLL button Allows you to select a para meter within a list of parameters DOWN button Allows you to decrease a value UP button Allows you to increase a value To View or Change the Setpoint To view the setpoint press and release the UP or DOWN buttons If you want to change the setpoint continue pressing until the ab SINGLE SETPOINT CONTROLLER desired setpoint value is displayed and then release the button A few seconds after the button is released the controller will accept the new value and revert to the HOME DISPLAY To View the Display Units From the HOME DISPLAY press the SCROLL button The display will show the temperature units in C F K and then return to the HOME DIS PLAY Call Customer Service if you require a dif ferent temperature unit To View the Output Power From the HOME DISPLAY press the SCROLL button twice Press and release the UP or DOWN button to view the output power This value is a read only value and cannot be changed
21. ety in mind It is your responsi bility to install it in conformance with local elec trical codes For safe operation please pay attention to the alert signals throughout the man ual Warnings To avoid electrical shock this furnace must 1 Use a properly grounded electrical outlet of correct voltage and current handling capacity 2 Be disconnected from the power supply before servicing 3 Have the door switch operating properly To avoid burns 1 Caution Hot Surface Avoid Contact Do not touch the exterior or interior sur faces of the furnace during use or for a period of time after use To avoid personal injury 1 Do not use in the presence of flammable or combustible materials fire or explo sion may result This device contains components which may ignite such material 2 Refer servicing to qualified personnel SAFETY INFORMATION Please note the following WARNINGS WARNING This warning is presented for compliance with California Proposition 65 and other regulato ry agencies and only applies to the insulation in this product This product contains refracto ry ceramic refractory ceramic fiber or fiberglass insulation which can produce respirable dust or fibers during disassembly Dust or fibers can cause irritation and can aggravate preexisting respiratory diseases Refractory ceramic and refractory ceramic fibers after reaching 1000 C contain crystalline silica which can cause lung damag
22. for continuous use or from 982 C 1800 F to 1100 C 2012 F for intermittent use Continuous use is operating the furnace for more than three straight hours and intermittent use is operating the furnace for less than three hours The unit consists of a heating chamber and a digital controller See Figure 1 for the overall shape and general features of the unit General Usage Do not use this product for anything other than its intended usage Principles of Operation The furnace chamber is heated by a single three section resistant heater which is embed ded in a refractory material The chamber is insulated with a ceramic fiber insulation The temperature is controlled by an electronic con trol The temperature is measured by a thermo couple and is registered on a digital display For safety door switches are incorporated to remove power from the heating elements when the door is opened The furnace is supported by the control section which also houses the elec trical connections General Specifications FB1300 Models Dimensions handle not included Chamber 4 W x 3 75 H x 4 5 D 10 2 x 9 5 x 11 4 cm Overall 7 9 W x 13 8 H x 8 5 D 20 0 x 34 9 x 21 6 cm Weight 15 7 Ib 7 1 kg Electrical Ratings Model Volts Amps Watts Phase Frequency FB1310M 220 240 4 4 1060 1 50 60 FB1310M 26 220 240 4 4 1060 1 50 60 FB1310M 33 220 240 4 4 1060 1 50 60 FB1314M 100 10 6 1060 1 50 60 FB1315M 120 8
23. op insulating piece and hearth collar position the furnace on its side Remove both objects from furnace Reposition furnace on its top Reinsert new hearth collar and the new top piece of insu lation Insert the new side pieces of insula tion last Reinsert element and hearth plate unit into the chamber pushing it firmly against the hearth collar Be careful not to damage insulation Reinsert new bottom piece of insulation over hearth plate Element leads and ceramic bushings should be exposed above insula tion bottom piece MAINTENANCE AND SERVICING 18 Thread the element leads and ceramic bushings through the bottom plate Bend the leads so they lie close to the refractory plate and the bottom insulation block The easiest and safest way to do this is to press the wire flat with a stick or blunt pusher Do not use a sharp object or nick the wire Secure plate to furnace chamber 19 Reverse steps 1 9 to reassemble furnace To Replace Door Switches Place furnace upside down and remove bot tom cover 2 Disconnect wires from door switches Identify or mark wires disconnected from door switch es to ensure proper placement and connec MN tion when reinstalling Warning Di fice ER 2 3 Remove two screws and nuts from door e POWE switches and slide door switches out supply before servicing 4 Install new door switches to bracket Place furnace in an upright position Adjust door switches until a cli
24. owing standards 33 models only EMC EN 50081 1 Generic Emission Standard EN 50082 1 Generic Immunity Standard Safety EN 1010 1 92 Safety requirements for electrical equipment for measurement control and laboratory use Part I General Requirements EN 1010 2 010 Part Il Particular requirements for laboratory equipment for the heating of materials per the provisions of the Electromagnetic Compatibility Directive 89 336 EEC as amended by 92 31 EEC and 93 68 EEC and per the provisions of the Low Voltage Directive 73 23 EEC as amended by 93 68 EEC The authorized representative located within the European Community is Electrothermal Engineering Ltd 419 Sutton Road Southend On Sea Essex SS2 5PH United Kingdom Copies of the Declaration of Conformity are available upon request Unpacking Visually check for any physical damage to the shipping container Inspect the equipment surfaces that are adjacent to any damaged area Open the furnace door and remove the packing material from inside the furnace chamber Vacuum the chamber prior to use to remove the insulation dust due to shipment Retain the original packaging mate rial if reshipment is foreseen or required Installation O Site Selection Caution Install furnace on a sturdy surface and allow Be sure ambient temperature does adequate space for ventilation not exceed 40 C 104 F The rec ommended ambient temperature is 17 C 27 C Am
25. reventive Maintenance A Warning Before using any cleaning or decontamination method except those recommended by Barnstead Thermolyne users should check with Barnstead Thermolyne that the proposed method will not damage the equipment A Warning Disconnect the furnace from power supply before clean ing A Warning Opening the door for an extended period of time will cause the painted surfaces above the door to be discol ored or burnt Contamination is a major cause of element failure therefore when possible remove the fume forming material before heating e g cleaning cutting oil from tool steel The resistance wire is high grade nickel chromium Some chemicals notably sulphur halogens and cyanides attack this wire at high temperatures so avoid spilling these chemicals in the furnace or heating them any hotter than necessary The refractory cement helps to protect the wire but will not completely immunize it from damage All heating elements must be considered expend able and replacement is expected however rea sonable care in their use will greatly extend the ser vice they will give As the manufacturer has no con trol over the use or care of the elements no specif ic service guarantee can be made Housekeeping is vital to your electric furnace KEEP IT CLEAN Run your furnace up to 871 C 1600F empty occasionally to burn off the conta mination that may exist on the insulation and ele men
26. thorization from BARNSTEAD assigning a Return Goods Number to the product or part shall be obtained IN NO EVENT SHALL BARNSTEAD BE LIABLE TO ANY PARTY FOR ANY DIRECT INDIRECT SPECIAL INCIDENTAL OR CONSEQUENTIAL DAMAGES OR FOR ANY DAMAGES RESULTING FROM LOSS OF USE OR PROFITS ANTICIPATED OR OTHERWISE ARISING OUT OF OR IN CONNECTION WITH THE SALE USE OR PERFORMANCE OF ANY PRODUCTS WHETHER SUCH CLAIM IS BASED ON CON TRACT TORT INCLUDING NEGLIGENCE ANY THEORY OF STRICT LIABILITY OR REGULATORY ACTION
27. ts Run for approximately two hours with the door slightly open See warning Element life is reduced somewhat by repeated heating and cooling If the furnace is to be used again within a few hours it is best to keep it at the operating temperature or at a reduced level such as 260 C 500 F During normal use the thermocouple in your fur nace can become oxidized and cause inaccurate readings therefore we suggest that if you regularly use your furnace you should change your thermo couple once every six months to assure the accura cy of your controller readings Clean by wiping the outside case of the unit with a damp cloth and mild soap solution 17 Troubleshooting Problem The furnace does not heat CYCLE light does not illuminate Power is not cut to heating elements when the door is open Slow heatup Repeated element burnout Inaccurate temperature readout 18 Possible Causes No power Defective electrical hookup Thermocouple has oxidized and opened the circuit Open thermocouple is indicated on the display as a temperature of 0 5 degrees Fuse s blown Controller malfunction Door switches malfunction Defective solid state relay Door switches are not functioning Low line voltage Heavy load in chamber Wrong heating element Overheating furnace Heating harmful materials Contamination present from pervious burnout Oxidized or contaminated thermocouple
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