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Maintenance
Over-Temperature Alarm Protection (OTP)

9-10

Thermo Scientific

Over-Temperature Alarm Protection (OTP)

The Load Over-temperature Alarm. System indicates if the temperature inside the
chamber exceeds the load alarm setpoint.

To insure proper operation, this alarm system must be checked at least once a
month.

To test the load over-temperature alarm, complete the following steps:

1. Operate the furnace without a product load at your normal operating

temperature.

2. Readjust main temperature control to a temperature above the load alarm

setting (refer to

Section “Setting the Temperature”

3. Observe the unit closely until the load alarm trips, indicated on the controller

beside the A1 label.

4. Reset the main temperature control to normal operating temperature. Once the

unit cools below the alarm setpoint, the A1 indicator will go off.

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Summary of Contents for BF51841BC

Page 1: ......

Page 2: ... 02454 USA Thermo Fisher Scientific Inc provides this document to its customers with a product purchase to use in the product operation This document is copyright protected and any reproduction of the whole or any part of this document is strictly prohibited except with the written authorization of Thermo Fisher Scientific Inc The contents of this document are subject to change without notice All ...

Page 3: ...ion Location 4 1 Wiring 4 1 Gas Inlet Tube 4 2 Important Guidelines for Ashing Applications 4 3 Hearth Plate Information 4 4 Shelf Installations in the Box Furnaces 4 5 Chapter 5 Operation Initial Start up 5 1 Idling Period 5 1 Vent 5 1 Atmosphere Port 5 2 Option B Excess Temperature Controller 5 2 Chapter 6 Operation UT150 Controller Normal Controller Operation 6 2 Setting the Temperature 6 4 Set...

Page 4: ...tware Installation 8 2 Communications Test 8 3 Troubleshooting 8 3 Decimal Point Adjustment 8 4 Addresses for Multiple Controllers 8 4 Chapter 9 Maintenance General Maintenance 9 1 Heating Elements 9 2 Heating Unit Replacement 9 2 Thermocouple T C Replacement 9 3 Solid State Relay SSR Replacement 9 5 Door Insulation Replacemen 9 5 Right Hand Door Conversion 9 7 Overtemperature Alarm Protection 9 7...

Page 5: ...F51732 Chamber Showing Shelf Groove 4 4 Figure 6 BF51841 and BF51842 Chamber Showing Shelf Groove 4 5 Figure 7 UT150 Control Panel 6 1 Figure 8 Heating Unit Replacement 9 4 Figure 9 Thermocouple 9 5 Figure 10 Door Insulation 9 6 Figure 11 Door Insulation Replacement 9 7 Figure 12 Door Hinge Sheet 1 2 9 8 Figure 12 Door Hinge Sheet 2 2 9 9 Figure 13 Wiring Diagram 11 3 List of Figures ...

Page 6: ...List of Figures ii Thermo Scientific ...

Page 7: ...data sheets plant hygiene guidelines and the corresponding technical rules issued by the operator shall be used to create written procedures targeted at personnel working with the subject matter device detailing The decontamination measures to be employed for the Laboratory Box and the accessories used with it The safety precautions to be taken when processing specific agents The measures to be ta...

Page 8: ...tion Indicates a hazardous situation which if not avoided will result in death or serious injuries Indicates a hazardous situation which if not avoided could result in death or serious injuries Indicates a situation which if not avoided could result in damage to equipment or property Is used for useful hints and information regarding the application Wear safety gloves Wear safety goggles Harmful l...

Page 9: ... causing personal injury or death product and property damage Do not use components or materials not specifically designed for this equipment Failure to comply with this precaution could result in damage to equipment used or the furnace and may create an overheat situation Also do not use anything other than OEM exact replacement equipment and parts Not using OEM replacement parts could cause faul...

Page 10: ...rmo Scientific approval void the limited warranty Inspections and maintenance are performed at the specified intervals An operation verification test is performed after each repair activity The warranty is valid from the date of delivery of the Laboratory Box to the customer This product contains refractory ceramic fiber which can result in the following May be irritating to skin eyes and respirat...

Page 11: ...spiratory tract possible cancer hazard based on test with laboratory animals Flammability Non Combustible Reactivity Stable Ingestion May cause gastrointestinal disturbances such as irritation nausea vomiting and diarrhea Eyes Slightly to moderately irritating Abrasive action may cause damage to the outer surface of the eye Skin Slight to moderate irritation or rash Irritation is due to mechanical...

Page 12: ...al causes for pleural plaque It should be noted that plaques are not associated with any measurable effect on lung function A number of studies on health effects of inhalation exposure of rats and hamsters have been completed Rats exposed to doses corresponding to 200 f cc developed progressive lung damage interstitial fibrosis and cancers of the lung and of the pleura lining of the chest wall and...

Page 13: ...ash exposed areas with soap and warm water after handling Wash work clothes separately from other cloth ing Rinse washing machine thoroughly after use Respiratory Protection Use mechanical ventilation with proper dust collection equipment to keep the dust level below the exposure limits listed in the Ingredi ents Health Hazard Information section Use NIOSH or MSHA approved equipment when airborne ...

Page 14: ...ion Hazards None Special Fire Fighting Pro cedures Use extinguishing method suitable for type of surrounding fire Stability Incompatibility Stable under normal condition of use Incompatible with strong acids and alkalies Hazardous Decomposi tion and By products None Spill or Release to the Environment Vacuum clean dust where possible Use a dust suppressant if sweep ing is necessary Personal safety...

Page 15: ... ventilation Insulation surfaces should be lightly sprayed with H2O before removal to suppress airborne dust As water evaporates during removal additional water should be sprayed on surfaces as needed Only enough water should be sprayed to suppress dust so that water does not run on to the fiber in the work area After RCF removal is completed dust suppressing cleaning methods such as wet sweeping ...

Page 16: ...t This product contains refractory ceramic fibers which have been identified by the International Agency for Research on Cancer IARC as possibly carcinogenic to humans Avoid breathing fiber particulates and dust RISKS Possible cancer hazard by inhalation May cause temporary irritation to eyes skin and respiratory tract PRECAUTIONARY MEASURES Minimize airborne fibers with engineering controls Use N...

Page 17: ... develop Inhalation Remove to fresh clean air If any of the above irritations persists seek medical attention CONSULT MSDS FOR ADDITIONAL PRODUCT INFORMATION AND HANDLING INSTRUCTIONS REX ROTD CORPORATION P O BOX 980 FOWLERVILlE MI 48836 517 223 3787 Standards and Directives The Laboratory Box Furnaces complies with the following standards and guidelines Current Approved Agency standards Underwrit...

Page 18: ...Safety Notes Standards and Directives 1 12 Thermo Scientific ...

Page 19: ...es Left swing door reversible Safety interlock switch automatically interrupts power to heating elements when door is opened This feature protects heating elements and eliminates operator s exposure to electrical shock Energy efficient Moldatherm insulation suitable for high interior exterior temperature differential The unit is rated for a maximum operating temperature of 1200 C Patented LGO ligh...

Page 20: ...Table 1 BF51841 Laboratory Box Furnaces The BF51841BC model has adjustable over temperature control Model Dimension WXF BXH in cm Maximum Operating Temp Watts Thermoco uple Voltage Integral Control Shipping Weight lbs kg Cham ber Exterior Shipping Approxim ate BF51841C BF51841BC 15x15 x15 38 1x 38 1x3 8 1 29x28x33 73 6x71 1 x83 8 30x34x31 6835x78 6x71 1200 C 5800 Type PL II 208 240 VAC 50 60 Hz si...

Page 21: ...cking Carefully unpack and inspect your furnace for damage If the product is damaged report it to the appropriate carrier and retain packing materials Retaining all packing materials and documentation is essential in any damage claims filed ...

Page 22: ...Unpacking Unpacking 3 2 Thermo Scientific ...

Page 23: ...ided per local code 2 Remove the right panel side with High Voltage label of the furnace by removing the appropriate screws Removing the side panel allows for access to the terminal block and grounding screw located at the base of the unit 3 The 7 8 inch diameter hole located on the lower rear panel may be used to mount a standard 1 2 inch electrical conduit connector 4 Thread two properly sized p...

Page 24: ...d breakage during shipping and handling Even if you do not intend to use the gas inlet you must install the assembly before operating the furnace The only tool you need is a Phillips head screwdriver To install the gas inlet assembly 1 Carefully remove the assembly from the package and inspect for any damage 2 Remove the two mounting screws from the rear housing panel of the furnace 3 Insert the c...

Page 25: ...furnace chamber and heating elements are coated with carbon an electrical short circuit may occur and cause the elements to overheat and burn out There is also some danger that the carbon residue will be absorbed through the surface of the Moldatherm insulation and affect the fully embedded heating elements The best way remove carbon residue from the chamber and elements surfaces is to operate the...

Page 26: ...ded during each furnace operation How to Install Hearth plates are designed with a grooved surface The grooved surface must be positioned against the chamber floor Figure 4 Hearth Plate Ripped Shelf Installation in Box Furnaces 1 Model series BF51731 and BF51732 are supplied with a pair of half depth shelves 2 One or both of these shelves can be installed into the chamber using the single groove a...

Page 27: ...Model series BF51841 and BF51842 are supplied with a pair of half depth shelves 4 One or both of these shelves can be installed into the chamber using any of the three groove sets near the mid point on each side wall Figure 6 BF51841 and BF51842 Chamber Showing Shelf Groove ...

Page 28: ...Installation Shelf Installation in Box Furnaces 4 6 Thermo Scientific ...

Page 29: ...rature protection option B set that instrument above 1100 C Allow furnace to run for 7 10 hours The furnace is now ready for normal operation Refer to Section Operation UT150 Controller and the UT150 manuals for more information on the controller Thermo Fisher Scientific recommends initially running the furnace at 1100 C for 7 10 hours in order to burn off contaminants and to form a protective oxi...

Page 30: ...The BF51841 furnace is not designed to be a gas tight atmosphere furnace Option B Excess Temperature Controller The over temperature protection system option B is a redundant over temperature protection system which utilizes a separate controller magnetic contactor and thermocouple For protection of the furnace the over termperature alarm setpoint should be set slightly higher than the furnace max...

Page 31: ...ications Occasionally it may be advisable to configure the temperature controller differently to suit a particular working environment or process Before reconfiguring the controller read this chapter and the UT150 operation manual Reconfiguring the controller can change the unit characteristics and design parameters which can hamper performance and make the equipment dangerous to use ...

Page 32: ...roller Operation The Temperature Controller senses the chamber air temperature of the furnace the PV or process value and supplies the heat necessary to achieve the desired setpoint The controller includes an LED display and a push button keypad Refer to Table 2 and Table 3 for lists of displayed parameters and keypad functions Table 2 UT150 Parameter Functions Operating Parameters access by holdi...

Page 33: ...Operation Parameters Menu use SET ENT to move from one parameter to next and to register changes you have made in set point and parameter value Holding SET ENT for three seconds exits either the Operation or Setup Parameters menu Use the Up Arrow button to increase the temperature setpoint display and change parameter values in the Operation and Setup Parameter menus Whenever you change the value ...

Page 34: ...he normal display Changing Between Celsius and Fahrenheit The controller is factory set to operate with degrees Celsius To change the display modes and parameter settings to the Fahrenheit scale you will need to change the Input Type parameter In and also the values of various scale dependent parameters If during this procedure the buttons are inactive for more than two minutes the controller will...

Page 35: ...nstructions in Section Normal Controller Operation to reset the temperature setpoint in F 14 Apply the F label over C label on the control panel Setting the Ramp to Setpoint Rate The Ramp Rate feature allows the chamber to be heated or cooled at any rate slower than the maximum capability of the unit To fine tune ramp rates you may need to test using loads with similar and thermal properties to lo...

Page 36: ...play by pressing and releasing the other arrow button Auto Tuning the Controller Factory settings are provided for general purposes but your process can be enhanced through the auto tune feature For a given process temperature and product load auto tuning maximizes the performance of the chamber by operating with the quickest response and minimal temperature overshoot To auto tune the controller 1...

Page 37: ...own The chamber should now operate to the process temperature with the given product load with the quickest response and minimal temperature overshoot If the process temperature or load changes significantly another auto tune session may be necessary to optimize the chamber performance Correction of Temperature Overshoot An alternative method of running the auto tune is to select the target setpoi...

Page 38: ...Correction of Temperature Overshoot 6 8 Thermo Scientific ...

Page 39: ...cess temperature incident Pressing and releasing the SET ENT button once again shows the current temperature measured by the controller in the top display this may differ slightly from the main temperature controller The value shown in the bottom display is the current excess temperature setpoint Pressing and releasing the SET ENT button again cycles back to the first display Excess Temperature Op...

Page 40: ... the Operating Parameters by holding the SET ENT button for three seconds Excess Temperature Controller Operation After the Excess temperature Setpoint and Hysteresis values are selected the controller is ready for operation The setpoint and hysteresis should be reviewed and adjusted if necessary when the main controller setpoint is changed During an excess temperature incident the EXCEEDED and OU...

Page 41: ...d peak Exceeded Temperature will be lost In some inspires the OUT indicator is illuminated without a high temperature event In this TRIPPED OUT MODE the power to the heating element is introduced A source failure indicated with 0 0 in the upper display will cause OUT illuminated A power failure in some instances causes OUT to be illuminated As lost as the EXCEEDED indicator is extinguished the UT1...

Page 42: ...Excess Temperature Option B Model Excess Temperature Controller Operation 7 4 Thermo Scientific ...

Page 43: ... pin port on the rear of the Thermo Fisher Scientific unit 3 Connect the other cable end with the RS 232 485 converter to the COM 1 Port or other COM port of your choice on the rear of the PC 4 If you have purchased the Spec View Plus Communication Software with the copy protection key install this key on your parallel port It may be necessary to locate the key between a cable and the parallel por...

Page 44: ...opens click on the Test Comms for New Config Button 5 The Input Required window then opens Enter a new Config Name up to 8 characters with no spaces or accept the DEFAULT name Click OK 6 The Port and Protocol window opens next On the COM1 line if the COM1 port is the serial port used to connect to the port controller select the pull down menu from protocol column Highlight Need to identify the pro...

Page 45: ... interrupted 12 On some controllers the decimal point position has been changed from the YOKOGAWA factory default This will make the SpecView display differ from the controller If this is the case follow the instructions in Section Decimal Point Adjustment Chapter Communication Option Communications Test When you have established a working communications link between the controller and PC you shou...

Page 46: ...ist icon represented by a page with lines on it 2 Select the controller model number and select Properties button The Add Rename Instrument box appears 3 In the Address window highlight the middle digit usually a 1 and change to 0 zero 4 Click the Rename Only button Close the Variables box click on X in corner of smaller box 5 Select the Enter Runtime icon to see the results of the change Addresse...

Page 47: ...he displayed values to those in Table 4 UT150 Communication Parameters Make adjustments to the Adr parameter as needed 6 Press and hold SET ENT for 3 seconds to exit the Setup Parameters Menu Loss of power to the Excess Temperature Controller will not change the setpoint or hysteresis value However the last recorded Exceeded Temperature Duration Time and peak Exceeded Temperature will be lost ...

Page 48: ...Communication Option Addresses for Multiple Controllers 8 6 Thermo Scientific ...

Page 49: ...ntaminants is recommended Service life of the heating units and thermocouple will vary greatly depending on the particular furnace application Maintenance should only be performed by trained personnel Disconnect furnace from main power before attempting any maintenance to furnace or its controls Before maintaining this equipment read the applicable MSDS Material Safety Data Sheets in the safety no...

Page 50: ...orking with or handling the heating units as the ceramic fibers and dust particles are a possible eye skin lung irritant Refer Section Safety Notes When installing maintaining or removing the fibre glass Insulation the following precautions will minimize airborne dust and fiber Keep personnel not involved in the installation out of the area Use a good vacuum to clean area and equipment Use a dust ...

Page 51: ...ouple and the power wires connecting straps from the heating elements at the rear of the furnace 4 Open furnace door slightly Disassemble the chamber frame starting from the top rear and working toward the base The front supports do not have to be removed The heating elements can then be pulled back and out of the remaining front support brackets 5 A gasket made of ceramic fiber blanket is located...

Page 52: ...Maintenance Thermocouple T C Replacement 9 4 Thermo Scientific Figure 8 Heating Unit Replacement Thermocouple T C Replacement To replace the thermocouple 1 Disconnect power to the furnace ...

Page 53: ...n with the new section Put the thermocouple assembly back into the furnace chamber Fasten with the mounting screws and reconnect wires Refer to Figure Wiring Diagram for proper wire connections 5 Replace the back panel Figure 9 Thermocouple Solid State Relay SSR Replacement To replace the solid state relay 1 Disconnect power to the furnace 2 Remove the left side panel facing front to provide acces...

Page 54: ...r insulation 1 Disconnect power 2 Open furnace door 3 Loosen the screws holding the upper and lower door insulation brackets in place The screws do not need to be removed 4 Pull the door insulation out of the support brackets Insert new insulation and reassemble the support brackets Figure 10 Door Insulation ...

Page 55: ...Maintenance Door Insulation Replacement Thermo Scientific 9 7 Figure 11 Door Insulation Replacement ...

Page 56: ...act switch mounted below the door 3 Install door on right hand side of the chamber frame using the bolts in the holes provided Install the contact switch in the mounting location provided at the right of old location 4 Check alignment of the door insulation with the chamber Sideways adjustment can be made by loosening the door insulation supports and moving the insulation plug Vertical adjustment ...

Page 57: ...Maintenance Right Hand Door Conversion Thermo Scientific 9 9 Figure 12 Door Hinge Sheet 2 2 ...

Page 58: ... test the load over temperature alarm complete the following steps 1 Operate the furnace without a product load at your normal operating temperature 2 Readjust main temperature control to a temperature above the load alarm setting refer to Section Setting the Temperature 3 Observe the unit closely until the load alarm trips indicated on the controller beside the A1 label 4 Reset the main temperatu...

Page 59: ...eads ooo PV exceed effective range Check the input type and range set tings and correct them Controller reads UUU PV is below effective range Check the input type and range set tings and correct them Controller reads Err Probable hardware failure Call Service for controller repair The controller displays do not illuminate The furnace Is not con nected to the power Check furnace connection to power...

Page 60: ...lear the area around the base Poor ventilation base Clear the area around the base Inlet and or exhaust vents are open Close vents Inadequate tuning values Auto tune the controller Insufficient stabilization time Allow load ample time to reach equilib rium Intermittent failure of switch controller limit switch or wiring Verify wiring connection Temperature Offset Controller degradation and or sens...

Page 61: ... 1 1 Thermocouple Single 7299 1104 00B S 1 0 Thermocouple Double 7299 1200 00M S 0 1 T C Leadwire 33940 006 6 feet 12 feet Wire Harness 38850G31 1 1 Main Circuit Breaker 302795H05 1 1 Control circuit breaker 21642H01 2 2 Heater fuse 32657 004 2 2 Contactor 300088H01 1 1 Solid State Relay 102460 1 1 Red Pilot Light 33002001 1 1 Main Controller 303115H03 1 1 Over temp Controller 303775H05 0 1 Door I...

Page 62: ... all BF51841 models Door Bracket for Trailing Arm 300531G01 1 1 Door Bracket for Trailing Arm 301665G01 1 1 Cab Bracket Trailing Arm rhd 301665G01 1 1 Cab Bracket Trailing Arm rhd 301665G02 For optional right hand door swing Operation Manul 304259H01 1 1 Wiring Diagram 304258I01 1 1 ...

Page 63: ...Replacement Parts Thermo Scientific 11 3 Figure 13 Wiring Diagram ...

Page 64: ...Replacement Parts 11 4 Thermo Scientific ...

Page 65: ...Thermo Scientific 12 1 12 Error Codes This chapter is not applicable ...

Page 66: ...Error Codes 12 2 Thermo Scientific ...

Page 67: ...ieren die unter diese RoHS Anweisung fillen finden Sie unter www thermo com WEEERoHS Italia Questo prodotto deve risponderealla direttiva dell unione Europea 2002 96EC in merito ai Rifiuti degli Apparecchi Elettrici ed Elearonici WEEE k marcato col seguente simbolo Thermo Scientific ha stipulate contratti con una o diverse societi di ricicliggio smdtimento in ognuno degli Stati Membri Europei Ques...

Page 68: ...WEEE Compliance 13 2 Thermo Scientific ...

Page 69: ...Thermo Scientific 14 1 14 14 Spare Parts and Accessories This chapter is not applicable ...

Page 70: ...Spare Parts and Accessories 14 2 Thermo Scientific ...

Page 71: ...Thermo Scientific 15 1 15 Device Log Laboratory Box Furnaces Part number Serial number Service number Location Operator s note Work carried out Notes Date Signed ...

Page 72: ...Device Log 15 2 Thermo Scientific ...

Page 73: ... 112114 Email info labequipment de thermofisher com Enquiries from Europe Middle East and Africa Phone 49 0 6184 90 6940 Fax 49 0 6184 90 6772 E Mail info labequipment de thermofisher com Postal address USA Thermo Scientific 275 Aiken Road Asheville NC 28804 USA Enquiries from North America Phone 1 800 879 7767 Fax 1 828 658 0363 E Mail info l abequipment thermofisher com Enquiries from Latin Amer...

Page 74: ...Contact 16 2 Thermo Scientific Enquiries from Asia Pacific Phone 852 2711 3910 Fax 852 2711 3858 E Mail info labequipment thermofisher com ...

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