Thomas Scientific 5300A20/F48025-TS Operation Manual And Parts List

Muffle furnace series 1285

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Model

5300A20/F48025-TS

5300A25/F48025-80-TS

LT1285X5 • 5/12/09

Muffle Furnace

OPERATION MANUAL

AND PARTS LIST

Series 1285

Voltage

120V

Control

Single Setpoint Model

with OTP

8 Setpoint Programmable Model

with OTP

Display

°C

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Summary of Contents for Thomas Scientific 5300A20/F48025-TS

Page 1 Muffle Furnace OPERATION MANUAL AND PARTS LIST Series 1285 Model Voltage Control Display 5300A20/F48025-TS 120V Single Setpoint Model °C with OTP 5300A25/F48025-80-TS 120V 8 Setpoint Programmable Model °C with OTP LT1285X5 • 5/12/09...
Page 2: Table Of Contents
Alert Signals..............................3 Warnings ..............................3 Introduction................................5 Intended Use ..............................5 General Usage..............................5 Principles of Operation ..........................5 General Specifications ............................6 Models 5300A20/F48025-TS and 5300A25/F48025-80-TS ................6 Environmental Conditions ..........................7 Unpacking ................................8 Installation ................................9 Site Selection..............................9 Electrical Connections ..........................9 Operation, All Models ............................10 Power Switch ..............................10 Cycle Light ..............................10...
Page 3: Safety Information
You must carefully read and understand the con- tents of this manual prior to the use of this furnace. Warning Your Thomas Scientific 5300A20/F48025-TS or Warnings alert you to a possibility of per- 5300A25/F48025-80-TS Muffle Furnace has been sonal injury.
Page 4 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 Thomas Scientific at 1-800- 345-2100.
Page 5: Introduction
Introduction Intended Use Caution The 5300A20/F48025-TS or 5300A25/F48025-80-TS Do not exceed operating temperatures furnace is a general purpose laboratory and heat treat- shown in “General Specifications.” ing furnace. For optimum element life, Thomas Exceeding these limits will result in Scientific recommends observing these temperature severely reduced element life.
Page 6: General Specifications
General Specifications Models 5300A20/F48025-TS and 5300A25/F48025-80-TS Dimensions in Inches (cm): Chamber: 7 (17.8) W x 5 (12.7) H x 10 (25.4) D Overall: 13.25 (33.7) W x 19 (48.3) H x 19.5 (49.5) D Weight: 56 lb. (25.4 kg) Electrical Ratings:...
Page 7: Environmental Conditions
ENERAL PECIFICATIONS Environmental Conditions Operating: 17°C to 27°C; 20% to 80% relative humidity, non-condensing. Installation Category II (overvoltage) in accordance with IEC 664. Pollution degree 2 in accordance with IEC 664. Altitude Limit: 2,000 meters. Storage: -25°C to 65°C; 20% to 80% relative humidity...
Page 8: Unpacking
Vacuum the chamber prior to use to remove the insulation dust due to ship- ment. (The 5300A20/F48025-TS and 5300A25/F48025-80-TS furnaces are supplied with one ceramic shelf.) Retain the original packaging material if reshipment is foreseen or required.
Page 9: Installation
Caution the furnace to your electrical supply.The Allow at least six inches of space 5300A20/F48025-TS or 5300A25/F48025-80-TS fur- between the furnace and any combustible naces are supplied with a power cord rated at 120V, surface. This permits the heat from the 15 amps.
Page 10: Operation, All Models
Operation, All Models Power Switch Warning To avoid personal injury do not use in the Both the ON/OFF power switch and the digital display presence of flammable or combustible will illuminate when power is switched ON. The fur- chemicals; fire or explosion may result. nace will begin to heat to its controller's current set- This device contains components which point.
Page 11: Single Setpoint Model With Otp
Single Setpoint Model w/OTP The single setpoint model w/ OTP furnace con- Temperature Output 2 Output 1 Display troller is a single setpoint controller which provides a single digital display to indicate the current chamber temperature or setpoint temperature. This tempera- ture controller features sensor break protection, self- tuning capability and over temperature protection (OTP) with an additional OTP relay device.
Page 12: To View The Display Units
/OTP INGLE ETPOINT ODEL W 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 DISPLAY. (Call Customer Service if you require a different temperature unit.) To View the % Output Power From the HOME DISPLAY press the SCROLL button twice.
Page 13 /OTP INGLE ETPOINT ODEL W Alarms Note The controller will flash an alarm message in the home The following alarm messages are fac- display if an alarm condition is detected. tory default settings and may vary if you have changed the configuration of your 2FSH: Measured value full scale high alarm.
Page 14 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. Thomas Scientific recom- mends you use this feature to provide the best temper- Note ature accuracy the controller can attain.
Page 15: Single Ramp & Dwell
Single Ramp & Dwell Functions This type of controller has single ramp and dwell program- ming capabilities. The Ramp and Dwell can be configured to five different modes. Mode 1 (Opt. 1) is a Ramp (if needed) to the Setpoint temperature, a Dwell, and then a cool down.
Page 16: Program Setup
& D INGLE WELL Program Setup Press the PAGE button until the “SP” is displayed. Press the SCROLL button once, “SPrr” (Ramp Rate) will be displayed, set the desired Ramp rate with the UP or DOWN buttons, if the ramp to set- point feature is needed.
Page 17: Segment Programmable Models With Otp
8 Segment Programmable Model w/OTP The 8 segment programmable controller consists of a microprocessor based three-mode PID Note (Proportional, Integral, Derivative), programmable The controller will return to the HOME temperature controller with over-temperature protec- DISPLAY if left idle for more than a few tion and appropriate output switching devices to con- seconds.
Page 18 /OTP EGMENT ROGRAMMABLE ODEL W Buttons and Indicators OP1 (Output 1): illuminates when the heating output of the temperature controller is on. AUTO/MAN: (Auto/Manual Mode): when the con- troller is in the automatic mode the output automatically adjusts to keep the temperature or process value at the setpoint.
Page 19 /OTP EGMENT ROGRAMMABLE ODEL W Controller Parameters Home Display °C: measured temperature in Celsius. Temperature units can not be changed without entering the configuration. Contact Customer Service if a different temperature unit is required. OP: % output power demand; displayed in lower display (cannot be changed).
Page 20 /OTP EGMENT ROGRAMMABLE ODEL W rmP.U (Ramp Units): Press the UP or DOWN ARROW to toggle between ramp units (SEc, min or Hour). Controller will default to “SEc.” dwL.U (Dwell Units): Press the UP or DOWN ARROW to toggle between dwell units (SEc, min or Hour). Controller will default to “SEc.”...
Page 21 /OTP EGMENT ROGRAMMABLE ODEL W Pid LiSt G.SP (Gain Setpoint): Is the temperature at which the controller switches from the (SEt1) PID values to the (SEt 2) PID values. Pb: Proportional band in display units. (SEt 1) ti: Integral time in seconds. (SEt 1) td: Derivative time in seconds.
Page 22 /OTP EGMENT ROGRAMMABLE ODEL W Sensor Break Protection This controller provides sensor break protection in the event the thermocouple opens. If an open thermocouple condition occurs, the digital display will Blink “S.br” and the power to the heating element will be shut OFF (Cycle light will extinguish).
Page 23: Programming The Controller
/OTP EGMENT ROGRAMMABLE ODEL W Programming the Controller The controller is capable of varying temperature or process value with time through programming. A program is stored as a series of segments and can be run once, repeated a set number of times or run continuously. To create a cus- tomized program using the controller parameters listed under “Controller Parameters”...
Page 24 /OTP EGMENT ROGRAMMABLE ODEL W Press the UP or DOWN button to toggle between “bAnd, Hi, Lo and OFF.” If you choose to activate the holdback feature for your pro- gram by selecting Lo, Hi or bAnd, you will also need to set the holdback value.
Page 25 /OTP EGMENT ROGRAMMABLE ODEL W dwL.U: Setting Dwell Units Step 4 in programming your controller is defining dwell units. Dwell units are time units which are used in “dwELL” segments (amount of time to remain at a specif- ic temperature ). See “Setting the Segment Type” for an explanation on how to set a dwell segment.
Page 26 /OTP EGMENT ROGRAMMABLE ODEL W Press the SCROLL button until display reads, “tYPE.” Press the UP or DOWN button until display reads, “rmP.r.” Steps 4 and 5 are used in the 4 program model only. If you are using an 8 segment program, skip to step 6. Note When the program ramp has ended Press the SCROLL button until display reads...
Page 27 /OTP EGMENT ROGRAMMABLE ODEL W Press the UP or DOWN button to select a time in ramp units (seconds, minutes or hours; set in the “rmP.U” parameter. dwEll To maintain a constant temperature for a specified time: Press the PAGE button until you reach the program list (ProG LiSt).
Page 28: Running A Program
/OTP EGMENT ROGRAMMABLE ODEL W Press the UP or DOWN button until display reads, “End.” Note Press the SCROLL button until display reads, Do to the configuration of these con- “End.t.” trollers, it is advised NOT to end a program to the “S OP” type. This will Press the UP or DOWN button to toggle between put the furnace in manual mode.
Page 29: Gain Scheduling
/OTP EGMENT ROGRAMMABLE ODEL W This controller has automatic tuning features which install optimum tuning parameters to give the best temperature accuracy. No manual loading of tuning parameters is needed. We recommend that you tune the furnace to your Note specific application to obtain the best results.
Page 30: Adaptive Tuning
/OTP EGMENT ROGRAMMABLE ODEL W Autotuning The Autotune feature automatically sets up the PID values in the control parameters to suit new process conditions. To tune your furnace using autotuning: Load your furnace with a load similar to your nor- mal load and close the door.
Page 31: Furnace Loading
Furnace Loading • For best results, use only the center two- thirds of the furnace chamber. Caution Do not overload your furnace chamber. If • If you are heating a number of small parts, the load is to be heated uniformly, it spread them throughout the center two-thirds should not occupy more than two-thirds of the furnace chamber.
Page 32: Preventive Maintenance
Preventive Maintenance Contamination is a major cause of element failure, therefore, remove all fume forming material before heating. (e.g. clean cutting oil from tool steel). Housekeeping is vital to your electric furnace – KEEP IT CLEAN. Run your furnace up to 871°C (1600°F) empty occasionally to burn off the contamination that may exist on the insulation and elements.
Page 33: Troubleshooting
Troubleshooting The Troubleshooting section is intended to aid in defining and correcting possible service problems. When using the chart, select the problem category that resembles the malfunction. Then proceed to the possible causes category and take necessary corrective action. Problem Possible Causes Corrective Action Cycle light does not...
Page 34 ROUBLESHOOTING Problem (cont.) Possible Causes (cont.) Corrective Action (cont.) Controller over-temp. Alarm output device malfunction. Replace controller. does not cut power to furnace chamber. OTP relay malfunction. Replace relay. Element shorted to ground. Replace faulty element. Slow heatup. Low line voltage. Install line of sufficient size and voltage (isolate furnace from other electrical loads).
Page 35: Maintenance And Servicing
Maintenance and Servicing To Replace a Heating Element Warning Disconnect the furnace from the power sup- To avoid electrical shock, this furnace ply. must always be disconnected from the power supply prior to maintenance and Remove the back terminal cover of the fur- service.
Page 36: To Replace A Chromel/Alumel Thermocouple
AINTENANCE AND ERVICING To Replace a Chromel/Alumel Thermocouple Disconnect the furnace from the power sup- ply. Remove both back covers. (Note placement and connection of wires.) Remove the clip holding the thermocouple in place (1 screw), and remove the two screws on the thermocouple terminals.
Page 37: To Replace Door Switches (Micro-Switch)
AINTENANCE AND ERVICING To Replace Door Switches (Micro-Switch) Disconnect the furnace from the power sup- ply. Remove the screws on the front dial and the screws and lock washers on the back cover. Slide the control section forward. (Note: do not pull excessively on the internal wires.) Disconnect the wires from the door switch.
Page 38: To Replace The Controller
To remove the controller, release the side clips and slide the controller out. Do not attempt to dismantle this unit further; replace it with a Thomas Scientific loaner or a new unit.
Page 39: Replacement Parts
Replacement Parts Warning Replace fuses with same type and rating. Single Setpoint Models with OTP 5300A20/F48025-TS Part number Description QTY. 0165A30 Controller 0165A47 Element 0165A51 Line Fuse 0165A68 Pilot Light 0165A71 S.S. Relay 0165A73 Mechanical Relay 0165A80 Door Switch 0165A78...
Page 40: Wiring Diagrams
Wiring Diagrams /OTP INGLE ETPOINT ONTROL W...
Page 41 IRING IAGRAMS EGMENT ROGRAMMABLE ONTROL...
Page 44: Warranty Repair And Service
Companyʼs invoice to the purchaser (Thomas Scientific makes no warranty with respect to consumable parts or supplies). For a period of one year from the date of such invoice, the Company will correct, either by repair or replace- ment at the Companyʼs sole election, any defect in material or workmanship (not including defects due to mis-...

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5300a25/f48025-80-ts