MIRAK 725 series Spezifikationen

MIRAK™4-Place Stirrers andStirring Hot PlatesOPERATION MANUAL AND PARTS LISTSERIES 846, 8471BARNSTEAD|THERMOLYNEModel # Voltage DescriptionS73130 240

Each MIRAK unit utilizes the latest in micro-processor technology to deliver the most reli-able, accurately controlled, ceramic top hotplate, stirrer

individual motors in the MIRAK 4-place stir-rers and stirring hot plates which producemaximum stirring torque under normal labora-tory load conditions

Removing the Clear PlasticCoverYour MIRAK unit has a protective plastic coverover the front control panel. This plastic cover isdesigned to protect th

Setting the Stirring SpeedThe 12” x 12” top plate will accommodate upto four 1 liter vessels, one at each stirringposition. The 4-place MIRAK will als

seconds. After five seconds the display willautomatically return to indicating actual speedand the SET light will go out. To stop the stirringaction w

immersion probe or a chemical-resistant 7”Teflon immersion probe are available throughyou distributor, or by contactingBarnstead|Thermolyne at 800-55

Controlling Top PlateTemperatureYour MIRAK 4-place stirring hot plate will controlthe top plate, and the display will indicate topplate temperature WH

To obtain an accurate reading when you areusing the probe and stirring your solution,make sure the probe is immersed in the liquidand is not located i

desired setpoint. Now plug your probe into theunit, change the setpoint to your desired solu-tion temperature, and place the probe in yoursolution.Wit

temperature, metal vessels and sand bathsmay be heated safely without the danger ofthe ceramic top breaking.When heating metal vessels and sand bathsh

Safety Information ...

Top Plate Surface Solid CeramicHeating Specifications Temperature range: 40°C - 540°CHeat-up time to maximum temperature (unloaded top plate) 8 minute

Dimensions - 12” x12” modelsModel Numbers SP73235SP73235-60SP73230 S73135SP73230-26 S73130SP73238 S73130-26SP73238-60 S73134Overall Width 13.500 (34.

Replacing the Power Board andor the Logic Board1. Unplug unit, turn unit upside down andremove screws from bottom.2. Open unit. Locate power board and

5. Note the position and color of wiresand cable connected to thepower/logic board assembly, payingparticular attention to the position ofthe black wi

12. Position the power/logic board assemblyin place and secure the four screwswhich mount the bracket for the boardassembly to the metal plate.13. Rec

25MAINTENANCE AND SERVICINGPower Board for stirring hot plate detailing correct placement of wires and cablesPower Board for stirrer detailing correct

Replacing the Motors1. Unplug unit, turn unit upside down andremove screws from bottom.2. Open unit. Note position and color ofwires and cables connec

wires coming from the probe recepta-cle at the back of the unit and discon-nect these wires from the logic board.11. Remove the 6 screws which securet

20. Screw the bracket with the logicboard/power board assembly back ontothe metal plate.21. Reattach all wires.22. Replace display board and attachcab

7. Locate the top plate THERMOCOU-PLE wires attached to the logic board.Detach these thermocouple wiresfrom the logic board.8. Remove the THERMOCOUPLE

Your Thermolyne MIRAK™ 4-Place stirringhot plate has been designed with function,reliability and safety in mind. It is the user’sresponsibility to ins

15. Bundle wires and resecure with a tie-strap.16. Replace bottom and secure withscrews.17. Proceed to set-up procedure.30MAINTENANCE AND SERVICINGLog

Set-Up Procedure1. Place a 500 ml flask with 300 ml ofwater on the top plate. Place a stan-dard laboratory thermometer (do notuse the probe for this p

6. Locate the black plastic jumper on thelogic board at position J3. (See the illus-tration of the Logic Printed Circuitboard.) Remove the jumper and

minus 3, turn the knob COUNTER-CLOCKWISE, counting each click ofthe knob until you have advanced theknob the same number of positions asthe number you

and remove screws from bottom.2. Open unit. Locate the logic board. (Seeillustration of the interior of unit or theexploded view.) Move the jumper pos

35TroubleshootingProblem SolutionUnit is not operating at all. Check power.Replace circuit breaker on power switch.Unit is stirring or heating but no

36Exploded Views4-place Stirring Hot Plate

37EXPLODED VIEWS4-place Stirrer

38Replacement PartsTo ensure your safety and for proper operation, the ceramic top plates for hot plates andstir plates are only sold as complete asse

39Ordering ProceduresPlease refer to the Specification Plate for the complete model number, serial number, andseries number when requesting service, r

4. Do not remove or modify groundedpower plug. Use only properly groundedoutlets to avoid shock hazard. Not ratedfor use in hazardous atmospheres.5. U

Barnstead|Thermolyne Corporation warrants that if a product manufactured byBarnstead|Thermolyne and sold by it within the continental United States or

Please note the following WARNINGS:WarningThis warning is presented for compliance with California Proposition 65 and other regulato-ry agencies and o

Your Thermolyne MIRAK™ 4-place stirrer orstirring hot plate is a general purpose stirring orstirring and heating plate designed for laborato-ry proced

1. Remove your MIRAK 4-place stirreror stirring hot plate from the carton.2. Inspect to ensure that the unit has notbeen damaged during shipment.3. If

1. Set the unit on a flat, stable surface atleast 12” away from combustible materi-als and plug the cordset into a properlygrounded electrical outlet

9INSTALLATIONBack ViewFront View