Rotavapor® R-250 EX Operation Manual
Contents
1. Fig 3 1 Functional elements of the R 250 EX 3 Function A vacuum rotary evaporator is used for quick single stage distillations that treat the product gently The process is based on the evaporation and condensation of solvents in a rotating evaporating flask It is possible to work under a vacuum to ensure gentler treat ment of the product and increase productive output Distillation may be done either under a vacuum or at atmos pheric pressure A secure tightness is only guaranteed in the low pressure range Evaporation Zone The solvent in the evaporating flask is heated by the hea ting bath The rotation of the evaporating flask ensures an intensive heat and mass transfer within the contents of the flask forming a thin film of solvent on the inner surface of the flask This combination of turbulence and film prevents local overheating and ensures high distillation speed Rotary Drive The drive unit ensure the uniform rotation of the evapo rating flask Condensing Zone The solvent vapor flows into the cooler at a high speed This is where the energy in the solvent vapor is transferred to the cooling medium e g water The solvent conden ses Receiving Flask The receiving flask is used to collect the condensate 6 Vacuum Connection The system pressure is reduced so as to lower the boiling point of the solvent The reduction in thermal loading that results ensures gentle treatment of the product a2. Regular care of the seal extends its service life 34 Rotavapor R 250 EX 6 Maintenance 6 2 Dismantling Assembling the Flask Snap Flange Coupling Dismantling the snap flange coupling e Close the two segments of the snap flange coupling e Turn the snap flange coupling by 180 until the closure faces down e Have Tool No 20075 ready at hand e Reopen the closure e Lift the 1 segment of the snap flange coupling to open it e Lift the 2 4 segment of the snap flange coupling to open it e With three fingers at the tip reach under the middle seg ment and raise it up e Insert Tool No 20075 in at the side between the lugs on the positional lock Turn lightly until the pin becomes unlatched Take the snap flange coupling assembly off EH a Fig 6 1 Taking apart the snap flange coupling e Clean the snap flange coupling Assembling the snap flange coupling e Insert the snap flange coupling from above until the pins in the lock latch into the hole on the lug e Close the two segments of the snap flange coupling e Turn the snap flange coupling again by 180 until the closure lies at the top e Lift the two segments of the snap flange coupling to open them i KR o 8 O t Fig 6 2 Assembling the snap flange coupling 35 6 Maintenance Rotavapor R 250 EX Fig 6 4 Inserting the evaporating flask seal 6 3 Removing Inserting the Evaporating Flask Sea
3. Rotavapor R 250 EX 8 Spare Parts and Accessories 8 3 Spare Parts Drip Tray Component Ordering No Single receiver 41318 Receiving flask 20 It 28671 TE EasyClamp DN25 41130 i Industrial tap small 41062 Spindle support 41353 41480 41130 Angle seat valve special 41405 Branching piece R 250 41476 28671 Ventilation duct complete 41480 41353 41405 Interchangeable receiver k E Receiving flask 20 It 28671 EasyClamp DN25 41130 Industrial tap small 41062 T piece DN 3x40 41351 Spindle support 41353 28671 Angle seat valve special 41405 Branching piece 1 41447 Ventilation duct complete 41480 41405 41353 Fig 8 3 Spare Parts Drip tray 43 8 Spare Parts and Accessories Rotavapor R 250 EX 8 4 Seals Tools 41094 41095 27378 41121 41084 20075 41229 A 41135 41230 41231 Fig 8 4 Sealing elements Component Ordering No Sealing elements Support ring inlet valve 41147 Seal SVL 30 00398 Screw Cap SVL 30 03223 Screw Cap SVL 15 03549 Seal tool 20075 O ring 130x5 0 Fom70 27378 Vapor duct 41084 Seal holder 41094 Vacuum seal 41095 Evaporating flask seal complete 41121 EasyClamp element DN70 41135 Set of 5 O rings 64x5 0 41229 Set of 10 cover caps D11 Pa 41230 Fig 8 5 Inlet valve complete Set of
4. The user may not disconnect reconnect orin any way change the function of the electrical eguipment and installation fit tings Changes may only be made by the manufacturer The acceptance inspection is made by an expert 2 9 Compliance with Standards The ex proof components comply with the following stan dards and have been developed manufactured and inspec ted using state of the art technology and in accordance with EN 29001 Certification identity has also been provided The certifications are on the CD Rom included in the scope of delivery Control Flameproof enclosure e EN 60079 e EN61241 PTB 07 ATEX 1021 X Intrinsically safe operating unit e EN 50014 e EN 50020 PTB 02 ATEX 2133 Heater Immersion heater e EN50014 e EN50018 e EN 50019 PTB 99 ATEX 1010 X Safety temperature cutout e EN 50014 e EN 50018 e EN 50019 PTB 00 ATEX 1001 Rotavapor R 250 EX 2 Safety Level sensor e EN 50014 e EN 50018 KEMA 99 ATEX 1157 Temperature sensor e Passive element according to EN 50 014 Drive Main switch e EN 50014 e EN 50019 PTB 99 ATEX 1161 Rotation motor e EN 50014 e EN 50018 e EN 50019 PTB 99 ATEX 1005 Bath lift motor e EN 60079 e EN 61241 BVS 06 ATEX E012 Vacuum controller e EN 50014 e EN 50 020 e EN 50 284 T V 02 ATEX 1879 X In line valve e EN 50014 e EN 50019 e EN 50028 LCIE 02 ATEX 6023 X 3 Function Rotavapor R 250 EX
5. or to change the value ait Relay reset point Select digit to change L Save Select digit to change 4 savel 19 Press OK to save the entry 20 Select the check mark by pressing the arrow but tons 21 Save the vacuum setting by pressing Save HE ee har 22 After 10 seconds of inactivity the display reverts to the standard screen and displays the actual pressure in the system 28 Rotavapor R 250 EX 5 4 Selection of Distillation Temperature In order to attain optimum distillation conditions the energy supplied to the distillation from the bath must be dissipated again across the cooler In order to ensure this it is best to work according to the following rule of thumb Cooling water AT2 Boiling temp AT1 Bath max 20 C 40 C 60 C How do you attain these conditions e Set the bath temperature at 60 C e Adjust the cooling water Its temperature should not be higher than 20 C e Allow the cooling water to flow through the cooler at a rate of 120 150 liters h e Select the working vacuum so that the boiling point 40 C e Obtain the corresponding value for the vacuum from the table of solvents Avantages of a Bath Temperature of 60 C e Evaporating flasks can be changed without any danger of scalding e The rate of water evaporation out of the heating bath is not yet very high e The energy in the heating bath is bein
6. Elektromagnetische Vertr glichkeit 2004 108 CE Compatibilit lectromagn tique 2004 108 EC Electromagnetic compatibility Basel 10 Oktober 2011 Ort und Datum Lieu et date Place and date Titel und oder Nummer sowie Ausgabedatum der Normen Titre et ou No ainsi que date d mission de la des normes Title and or No and date of issue of the standards EN 60079 0 2006 07 EN 60079 1 2007 07 EN 60079 7 2007 01 EN 60079 11 2007 01 EN 60079 14 2008 10 EN 60079 17 2008 05 EN 13463 1 2009 07 EN 1127 1 2008 02 EN 60529 2000 09 EN 60730 1 2005 12 EN 60730 2 9 2005 10 EN 60519 1 2004 05 EN 60519 2 2007 05 EN 60439 1 2005 01 EN 60204 1 2007 06 EN 61010 1 2002 08 EN 61010 2 010 2003 Physikalisch Technische Bundesanstalt PTB 0102 Bundesallee 100 D 3000 Braunschweig EN 60947 1 2008 04 EN 61326 1 2006 Peter Thurnherr Ge ch ftsf hrender Inhaber Elektroingenieur FH Administrateur d l gu ing nieur HES Mankhging Proprietor B Sc Electrical Engineer 50 Quality in your hands BUCHI Affiliates Europe Switzerland Austria Benelux France Germany BUCHI Labortechnik AG BUCHI Labortechnik GmbH BUCHI Sarl B CHI Labortechnik GmbH CH 9230 Flawil T 41 71 394 63 63 F 41 71 394 65 65 buchi buchi com www buchi com Italy BUCHI Italia s r l IT 20010 Cornaredo MI T 39 02 824 50 11 F 39 02 575 12 855 italia buchi com www buchi it Branch Office Benelux NL 3342 GT Hendr
7. 0 88 1 595 129 0 809 14 Isopropyl alcohol C H O 60 1 699 82 0 786 137 Methanol CH O 32 0 1227 65 0 791 337 Methylene chloride Dichloromethane CH CL 84 9 873 40 1 327 850 Methyl ethyl ketone C H O 72 1 473 80 0 805 243 Pentachlorethane C HCI 202 3 201 162 1 680 13 Pentane CH 724 381 36 0 626 850 n Propyl alcohol C HO 60 1 787 97 0 804 67 1 1 2 2 Tetrachloroethane C H Cl 167 9 247 146 1 595 35 Tetrachloroethylene C Cl 165 8 234 121 1 623 53 THF Tetrahydrofurane C H O 72 1 67 0 889 357 Toluol C H 92 2 427 111 0 867 77 1 1 1 Trichlorethane C H Cl 133 4 251 74 1 339 300 Trichlorethylene C HCI 131 3 264 87 1 464 183 Water HO 18 0 2261 100 1 000 72 Xylol Mixture KH 106 2 389 25 0 144 0 880 m 139 0 864 P 138 0 861 Table 3 List of Solvents CRC Handbook 65th Ed 30 Rotavapor R 250 EX 5 Operation 5 6 Troubleshooting Fault Possible cause Remedy Bath cannot be lifted No power supply for bath lift control defective Contact service department Bath lift defective Contact service department Bath too heavy when completely filled and additional full evaporating flask is mounted Only fill the bath to the mark at the inside of the pan Heating does not operate Safety temperature cutout has been activated Reset safety temperature cutout see Chapter 5 6 Level sensor is activated Fill bath with heating medium PT 1000 defective Error EQ Check
8. 11060831 Valve body stainless complete 41424 In line valve 24 V encapsulated 41488 Fig 8 11 Valve body complete and Controller Ex 8 6 Hose Connections Component Ordering No Water PVC hose ID 10 mm 27146 PVC hose ID 14 mm 17383 Y piece 12 mm 16 mm 41473 Pressure side upstream of reduction valve Softaflex ID 8 mm 04113 Softaflex ID 19 mm 37617 Vacuum Spiralflex hose ID 16 mm 41441 Y piece Outer Diam 16 mm 41449 T reducer 16 8 mm 41474 Product PTFE hose Outer Diam 10 mm 27277 PTFE hose Outer Diam 10 mm conductive 40039 47 Rotavapor R 250 EX R 250 EX 9 Appendix 9 1 Technical Data Power consumption 7 5k Electrical requirements 400 440 V 3P N 50 60 Hz Site condition maximum relative humidity 80 for temperatures up to 31 C decreasing linearly to 50 relative humidity at 40 C Evaporator capacity 31 litres of acetone per hour different for other solvents depending on the heat of evaporation Rotation drive Induction motor with explosion protection to EEx de Il C T4 Speed control Frequency converter 5 100 rom Control Flameproof encapsulation to EEx d II C T4 Operation intrinsically safe control panel EEx ia II C T4 Heating capacity 6 6 kW specific heat transferatio lt 3W cm Bath dimensions Diameter 610 mm 320 mm depth Bath pan Stainl
9. 5 Operation Fig 5 3 Vacuum Controller Pressure a is om Fig 5 4 Setpoints 5 3 Vacuum Controller Operation The vacuum controller is operated by its touch screen To control the vacuum in the Rotavapor you need to set two values The lower vacuum level Relay 1 set point is the ul timate vacuum that has to be reached When reaching the upper vacuum level Relay 1 reset point the vacuum valve opens again In between these two levels the vacuum in the system is being controlled 25 5 Operation Rotavapor R 250 EX DE mom D Joch cok E D l Lek Porn Menu Setting options The display shows the actual pressure in the system 1 Touch the screen to access the menu 2 Press Menu to enter the settings Meru 4 back Henu 4 Enter a Relaysetup A Relay 1 mode Relay 1 set point Back 3 Select Relay setup by pressing the arrow buttons and press Enter to open the setting menu 4 Select Relay 1 set point to set the value of the pres sure at which the vacuum valve will close Da a Rely setup 9 4 back Relay 1 mode m Relay 1 set point 4 Enter E Relay 1 set point Ur bar OK Ghangel 5 Press Enter to confirm The actual vacuum setting is being displayed 6 Press Change to set another vacuum 26 Rotavapor R 250 EX 5 Operation wit Relay
10. connect them to the distribution head 2 x DN 40 EasyClamp connec tions e Align the coolers in a vertical position and fix in place with the pivoting clamps e Screw the shut off tap into the distribution head and tighten it firmly e Insert the inlet tap into the distribution head and tighten the SVL 30 nut e Place the condensate cooler on the drip tray and connect it using the EasyClamp connection Fit the con necting pipe 9 between the condensate cooler and the distribution head and secure it 2 x DN 25 EasyClamp connections e Screw the temperature sensor 9 into the distribution head 7 e Tighten all EasyClamp connections evenly and in parallel e Turn the positioning nut to raise the flask support Connect the receiving flask to the condensation flask 15 4 Putting into Operation Rotavapor R 250 EX Fig 4 7 Descending glass assembly 4 8 Installation of the Descending Glass As sembly All glassware used must be intact with no signs of cracks spreading impact marks or other damage Inspect the glass ware visually before installing it e Fix the descending distributor head in position on the gear head using the DN 70 EasyClamp connection e Fit the cooling water hose nipples to the two or if appropriate three coolers e Put the expansion vessel onto the distribution head and secure it with the DN 40 EasyClamp connection e Fit the three way f
11. distribution head sealings 41231 Glass body 41346 Inlet valve complete 41348 Connection PTFE 41354 PTFE bellow 41388 Set of 5 SVL 15 seals 41946 44 Rotavapor R 250 EX 8 Spare Parts and Accessories Component Ordering No Snap flange coupling complete 41415 Screw cap 41416 Tool 41472 Fig 8 6 Snap flange coupling complete with tool Cooling water tap complete 03693 alate Nipple 34 x 20 mm 03810 Nipple 34 x 16 mm 41412 Reducer 32 x 34 41448 41448 03810 ae 03696 Fig 8 7 Cooling water tap complete 8 5 Accessories Cover for evaporating flask Material PP Cover for evaporating flask D 150 mm 42895 a A Bild 8 8 Cover for evaporating flask 45 8 Spare Parts and Accessories Rotavapor R 250 EX wang Fig 8 9 Flasks Component Ordering No Kolben Evaporating flask 20 Itr 41432 Evaporating flask 50 Itr 41339 Drying flask 20 Itr 41393 Drying flask 50 Itr 41394 This special flask is particularly suited for drying powdery substances or ahomogeneous mixture of solid products The baffles attached on the circumference of the flask ensure an intensive circulation of the contents inside the flask 46 Rotavapor R 250 EX 8 Spare Parts and Accessories Vacuum Controller EX Component Ordering No Vacuum controller Ex complete
12. or plugs defective Action Heder and Rotation are switched off bath lowers Acknowledgment Switch the unit off E28 Message Replay of heater down Cause Overtemperature cutoff is active Action Heder and Rotation are switched off bath lowers Acknowledgment Reset the overtemperature cutoff see chapter 5 6 Table 5 Error messages To let all possible error messages appear the device must be shut off and on at least once per 24 h 33 6 Maintenance Rotavapor R 250 EX 6 Maintenance Please note all rules aimed at keeping the rotary evaporator in a functional condition These also include periodic cleaning and inspection for any damage that might have occurred Make certain that supply of power to the unit has been interrupted before doing any maintenance work on the unit Always support the bath from below on the underside of the bath whenever doing any repair work 6 1 Cleaning Use commercially available cleaning agents to clean the glassware Merely wipe the housing off with a damp cloth without using any organic solvents Use a commercially available de liming agent to dissolve residues of lime in the bath and flush the bath out well Vacuum seal The vacuum seal should be cleaned according to how much itis used but every three months as a minimum See Chapter 6 5 for instructions on how to remove it Wipe the sealing lip with a soft dry cloth Clean the contact surface of the vapor duct
13. pertinent guidelines when disposing of electrical parts In addition observe all regional and local laws covering waste disposal Used batteries may be returned directly to your BUCHI representative for disposal 39 8 Spare Parts and Accessories Rotavapor R 250 EX 8 Spare Parts and Accessories Only original BUCHI accessories and spare parts ensure safe operation and a proper functioning of the unit The use of spare parts and accessories other than those from BUCHI is permissible only with prior approval of the manufacturer The Spare Parts Catalog may be used for purposes of assembly and disassembly only in conjunction with the corresponding Chapters 4 and 7 in this Operation Manual Dis closure and distribution to third parties and manufacturing based on this manual are strictly forbidden Copyright by BUCHI Labortechnik AG All rights reserved 40 Rotavapor R 250 EX 8 Spare Parts and Accessories 8 1 Spare Parts Glass Assemblies R RB R A Component Ordering No Threaded sleeve Svl 22 03577 reece Seal Gu 22 Id 17 PTFE 05155 27289 PTFE hose Outer Diam 10 40039 Screwed fitting Svl 22 27289 41155 Temperature sensor B complete 41076 Glass holder B complete 41120 EasyClamp DN25 41130 41399 EasyClamp DN40 41131 41151 Pivoting clamp complete 41151 Glass holder complete 41155 Set of bolts for EasyClamp DN25 41240
14. set point Select digit to change Ghangel wi Relay t setpoint Select digit to change 4 Ghange 7 Move to the desired digit by pressing the arrow but tons 8 Press Change to set a new value at Relay setpoint lee to change digit JLo ji J ait Relay set point Use to change digit Jak 9 Press or to change the value 10 Press OK to save the entry 27237 Relay 1 set point ____ 0 000 Select digit to change 4 ave Relay 1 mode Relay 1 set point MRelay reset point 4 Lite 11 Select the check mark by pressing the arrow but tons 12 Press Save to save the entries and exit 13 Select Relay 1 reset point by pressing the arrow buttons to set the value for the upper pressure limit at which the vacuum valve will open again wi Relay reset point bar OK Change 14 The actual vacuum setting is being displayed 15 To change that value press Change 27 5 Operation Rotavapor R 250 EX ail Relay 1 reset point Select digit to change 0 Ghana 0 16 Select the desired digit by pressing the arrow but tons ait Relay reset point Select digit to change Ghangel x wi Relay reset point _ 0 093 Ise to change digit es es GEN 17 Press Change to change the value KA 18 Press
15. und oder Nummer sowie Ausgabedatum der Normen titre et ou No ainsi que date d mission de la des normes title and or No and date of issue of the standards EN ISO 12100 2010 EN ISO 13849 1 2008 AC 2009 EN ISO 13850 2008 EN 1088 1995 A2 2008 EN 1037 1995 A1 2008 EN 60204 1 2006 AC 2010 NSBIV AG Zertifizierungsstelle SIBE Schweiz SCES 046 CE 1247 CH 6002 Luzern Erich Koller Head Quality Management B chi Labortechnik AG 9230 Flawil 49 Rotavapor R 250 EX Das Ger t entspricht folgenden weiteren EG Richtlinien L appareil correspond aux autres directives CE suivantes The eguipment also complies with the following EC directives Bestimmungen der Richtlinie Designation de la directive Provisions of the directive 94 9 EG Ger te und Schutzsysteme zur bestimmungsgem ssen Verwendung in explosionsgefahrdeten Bereichen 94 9 CE Appareils et syst mes de protection destin s a tre utilis s en atmosph re explosible 94 9 EC Equipment and protective systems intended for use in potentially explosive atmospheres Folgende benannte Stelle hat die Bewertung des Moduls Qualit tssicherung Produktion nach der Richtlinie 94 9 EG Anhang IV durchgef hrt L organe reconnu ci apr s a proc d l valuation de conformit prescrite par la directive 94 9 CE Annexe IV The following notified body has carried out the conformity assessment procedure according to Directive 94 9 EC Annex IV 2004 108 EG
16. 12G EEx de ia ia IC T3 T4 Rotavapor R 250 EX 2 Safety 2 Safety This unit has been built in accordance with the latest state of the art and with recognized rules of safety Nevertheless there are certain risks and dangers entailed with this unit e whenever the unit is operated by individuals who lack sufficient training e whenever the unit is used for some purpose other than its authorized use 2 1 Symbols Stop Information on dangers that can cause serious material damage and severe personal injuries or death Warning Information on dangers that can be injurious to one s health or cause material damage Note Information pointing out technical reguirements A failure to observe such information can lead to malfunctions uneco nomical operation and losses in production 2 2 Responsibilities of the Operator This unit may only be used by technical staff and by indi viduals who based on their training or their professional experience have a good understanding of the dangers that can arise from the its operation Staff who do not have this training and individuals who are currently in training must be given careful instructions This Operating Manual should be used as the basis for such training 2 3 Authorized Use The rotary evaporator has been designed for use in techni cal laboratories and in production It is authorized for use in applications that work with the evaporation and condens
17. 41131 Set of bolts for EasyClamp DN40 41241 eee Distribution piece R 41306 Industrial tap large 41317 Inlet valve complete 41348 ane Connection DN 25 41398 Cooler 3 coil closed 41399 41349 Geer Hose nipple 41436 Distillate cooler 41440 Cooler Bullfrog closed 41458 Support distillate condenser 41781 Table 6 Spare parts Glass Assemblies R RB 41781 41440 RB 3577 5155 Fig 8 1 Spare parts Reflux glass assembly 41 8 Spare Parts and Accessories Rotavapor R 250 EX 8 2 Spare Parts Glass Assemblies D D3 Component Ordering No p Threaded sleeve Svi 22 03577 Seal Svl 22 Id 17 PTFE 05155 PTFE hose Outer Diam 10 40039 Screwed fitting Svl 22 27289 Temperature sensor B complete 41076 EasyClamp DN25 41130 EasyClamp DN40 41131 Pivoting clamp complete 41151 41155 Glass holder complete 41155 Set of bolts for EasyClamp DN25 41240 BE Set of bolts for EasyClamp DN40 41241 Distribution piece D 41307 Cooler 3 coil 41333 Inlet valve complete 41348 41443 Cooler 3 coil closed 41399 Hose nipple 41436 3577 Frame DN25 3xDN40 41438 5155 U frame 41439 Expansion vessel 41442 Ge Vacuum connector 41443 Extension 41270 Table 7 Spare parts Glass Assemblies D D3 41438 D3 41155 41399 41333 27289 41438 Fig 8 2 Spare parts Descending glass assembly 42
18. 50 EX Fig 4 5 Interchangeable receiver 4 6 Installation of the Receiving Glass Assembly All glassware used must be intact with no signs of cracks spreading impact marks or other damage Inspect the glass ware visually before installing it Single receiver Insert the supporting ring into the connecting fitting Secure the outlet valve to the flask using a DN 25 EasyClamp connection Connect the branching piece to the flask Insert the shut off tap and tighten it firmly Interchangeable receiver Insert the supporting rings into the connecting fitting Secure the outlet valves 3 to the flask 4 using a DN 25 EasyClamp connection Connect each bracket to the flask and insert the branching piece Connect using four EasyClamp con nections Insert the shut off tap and tighten it firmly 14 Rotavapor R 250 EX 4 Putting into Operation Fig 4 6 Reflux glass assembly 4 7 Installation of the Reflux Glass Assembly All glassware used must be intact with no signs of cracks spreading impact marks or other damage Inspect the glass ware visually before installing it e Fix the reflux distribution head in position on the gear head using a DN 70 EasyClamp connection e Fit the cooling water hose nipples to both coolers e Introduce both coolers 3 together with the cooler hol ders 4 into the pivoting clamps and
19. 7 4 Putting into Operation Rotavapor R 250 EX Fig 4 12 Opening the snap flange coupling Fig 4 13 Removing the flask Removing the flask Slacken off the closure screw using the hexagon wrench Support the flask by hand or using the manual flask handler and then carefully lift up the closure screw Push in the hook to release the second segment and fold it outwards Lift the flask out at the top and remove it 18 Rotavapor R 250 EX 4 Putting into Operation D V Fig 4 14 Shut off tap 4 10 Operating the Shut off tap The shut off tap is of a special design It does not have a continuous thread on its inside for tightening it but rather a sliding plane with two fixed latching positions The closing pressure when it is in a closed position is provided by a prestressed spring e Insert the shut off tap in the distribution head or bran ching piece and turn the white lower section of the grip clockwise until the tap is tightly seated e To open Turn the black upper section of the grip clockwise until the shut off tap latches into the first position If the opening is not large enough continue turning until the tap reaches the second latching position Fig 4 15 Inlet tap 4 11 Operating the Inlet Valve The inlet valve is also closed by an integrated spring which applies contact pressure between the PTFE and the ground glass joint The valve c
20. PT 1000 in the bath and replace if necessary Heater coils defective Contact service department Rotation does not function Rotary drive defective Contact service department Rotary drive overheated Allow it to cool off and then start it up again Operator s panel only displays dashes Connection to intrinsically safe operator s panel interrupted Contact service department Table 4 Troubleshooting 31 5 Operation Rotavapor R 250 EX Fig 5 2 Safety temperature cutout in the heater terminal box Fig 5 3 Resetting the safety temperature cutout 5 7 Resetting the Safety Temperature Cutout The rated cut out temperature ofthe over temperature cutout is defined by temperature class T3 and T4 The safety tem perature cutout is fitted with a microswitch with a flameproof enclosure which is in the increased safety terminal box The system is based on a liquid filled capillary tube with a bellows fitting Standard EN 50019 stipulates that the safety temperature limiter may only be reset using a tool opening the terminal box and then by hand Automatic resetting is not possible The temperature cutout cannot be reset until the temperature falls below the rated cut out temperature 32 Rotavapor R 250 EX 5 Operation 5 8 Error Messages Error messages indicate a defect on the unit and are signalled on the bath temperature display They appear with an E at t
21. UGH Rotavapor R 250 EX Operation Manual C KON gt A Sgr Gel sel TE es E E 096806 en Imprint Product Identification Operation Manual Original Rotavapor R 250 EX 096806 en Publication date 09 2015 Version L BUCHI Labortechnik AG Meierseggstrasse 40 Postfach CH 9230 Flawil 1 E Mail quality buchi com BUCHI reserves the right to make changes to the manual as deemed necessary in the light of experience espe cially in respect to structure illustrations and technical detail This manual is copyright Information from it may not be reproduced distributed or used for competitive purposes nor made available to third parties The manufacture of any component with the aid of this manual without prior written agreement is also prohibited Rotavapor R 250 EX Table of Contents 2 1 2 2 2 3 2 4 2 5 2 6 2 7 4 9 4 1 4 1 4 1 4 13 Connections to the Vacuum and Cooling Medium 4 1 4 1 5 5 1 Scope of Delivery Safety Symbols Responsibilities of the Operator Authorized Use Unauthorized Use Basic Dangers Safety Precautions Modifications Function Putting into Operation Installation Location Unpacking Connecting to the Source of Energy Setting Up the Support Rod Fitting and Removing the EasyClamp Connection Installation of the Receiving Fixture Installation of the Reflux Glass Assembly Installation of the Descending Glas
22. an be opened and closed by operating the lever manually The setting screw on the lever permits precise continuous metering or venting 19 4 Putting into Operation Rotavapor R 250 EX Fig 4 16 Flask suction diagram Fig 4 17 Positioning the tip of the hose with the magnet 4 12 Flask Outlet Suction Optional A 10 mm dia PTFE hose is routed from the inside through the SVL 15 threaded opening on the distributor head and the threaded connection is tightened The hose is then positioned by inserting it into the evapo rating flask A PTFE encapsulated magnet is fitted to the front tip of the hose A second magnet is moved from the outer surface of the flask towards the tip of the hose until the magnets attract each other By moving the outer magnet the hose can be guided to any position in the flask and the entire contents can be siphoned off so that nothing remains in the flask The hose is connected to a container and this is connec ted to a vacuum source Not included in the scope of delivery 20 Rotavapor R 250 EX 4 Putting into Operation HH only at R 250 Fig 4 20 Vacuum hoses O dl NO O Cl ELSA 8 Fig 4 21 Cooling water hoses TI 7 1 4 Fig 4 22 Cooling water hoses versions with third cooler 4 13 Connections to the Vacuum and Cooling Medium Vacuum The Rotava
23. and turn it over Insert Tool No 20075 into the metal guide on the seal and pull the seal out Put in the new seal with the dark scraper ring facing the inside and the metal guide ring facing outward Insert the cylinder with the seal at the back lying on the in side Insert the seal at the front Provisionally install the EasyClamp using 2 bolts Set the distribution head of the glass assembly on top of the seal Close the segments of the EasyClamp Flip the top bolt up and in and hand tighten all 3 knurled nuts The unit should be tested for leaks each time the vacuum seal has been removed 37 6 Maintenance Rotavapor R 250 EX 6 6 Testing for Leaks With the assembled rotary evaporator in a clean and dry condition test it to ensure that the vacuum system is free of leaks To do this evacuate the unit to below 100 mbar and then close the vacuum line The rate of pressure rise must not exceed 3 to 5 mbar per 15 minutes A greater pressure rise indicates a leakage in the system In such a case recheck all EasyClamp connections and all valves 6 7 Customer Service No intervention on or in the unit is permissible except when done by authorized Service personnel These are individu als with a well backed technical professional training and knowledge of the dangers that result from a failure to observe the safety precautions required BUCHI s Customer Service representatives have available to them a Serv
24. ation of solvents It is used for e Evaporation of solvents and suspensions Drying of powders and granulates Re crystallization Reactions under reflux Synthesis and Cleaning of refined chemicals Recycling and concentration of solvents The authorized use of the Rotavapor also includes its care upkeep and careful handling in accordance with the provi sions in this Operating Manual 2 Safety Rotavapor R 250 EX 2 4 Unauthorized Use Any use other than those indicated above and any use that is not in conformity with the Technical Data is considered to be misuse The operator himself bears sole responsibility for all damage or injuries arising from any such use The following applications in particular are strictly forbidden e The production and processing of materials that can cause spontaneous reactions e g explosives Working without the evaporation flask being immersed in the water bath risk of breakage e The drying of hard brittle materials e g stones soil sam ples that might cause damage to the receiving flask e Sudden shock cooling of the evaporating flask The Rotavapor R 250 EX is not intended for work done under overpressures 2 5 Basic Dangers Basic dangers arise when working with the following e The hot water or oil bath risk of being scalded e Contaminated solvents that produce residues from distilla tion which could cause spontaneous reactions e g metal hydrides e Solv
25. ations of this Instruction Manual are also available in several other languages As an integral component of the rotary evapo rator this Instruction Manual must be readily available at all times to the operating staff at the location where they are using the unit The operator must inform the manufacturer immediately of any and all events relevant to safety that occur in his use of this equipment 2 7 Modifications No modifications are permissible without consulting with and obtaining the written approval of the manufacturer No glass assemblies other than those recommended by the manufacturer may be used nor may any glass components be put together arbitrarily Only those components of the rotary evaporator intended for fulfillment of its function may be installed in or removed from the unit This may be done either by hand or with the use of the tool supplied along with the unit The removal of safety devices or covers using some commercially available tool is other than for authorized commissioning personnel strictly forbidden Contact with parts that are electrically live may result in fatal injury 2 Safety Rotavapor R 250 EX 2 8 Information on explosion protection The R 250 EX rotary evaporator must not be operated in Zone O of ex protected areas It is not permitted to open the housing in particular the flameproof enclosure and this task may only be carried out by trained service personnel
26. cm above the upper edge of the retainer 12 Rotavapor R 250 EX 4 Putting into Operation Fig 4 2 Attachment of the EasyClamp Fig 4 3 Removal of the EasyClamp 4 5 Fitting and Removing the EasyClamp Connection Attachment of the EasyClamp e Carefully lay the EasyClamp around the glass and fold the top and bottom segments together closing them at their open connection point e Insert the bolt that does not have a spacer spring and tighten the knurled nuts slightly e Tighten all knurled nuts uniformly by hand Note Always tighten the knurled nuts by hand and not to the block with the spring pressed together completely Otherwise the prestressing will be lost There must always be a gap of about 2 mm between the knurled nut and the support surface Removal of the EasyClamp On all EasyClamp connections only the bolt without a spacer spring has to be removed in order to open the connection e Release the knurled nuts on all 2 or 3 bolts until the springs have been relieved Do not however screw the nut all the way off e On the bolt that does not have a spacer spring release the knurled nut far enough without removing it comple tely so that the bolt can be tilted out and removed as a unit e At the connection point which is now open spread the top and bottom segments apart and carefully remove the EasyClamp 13 4 Putting into Operation Rotavapor R 2
27. ecessary make an immediate assessment of the situation Notify the post office the railroad or the shipping company involved Save the original packing for possible transport at a later date The bath is fixed with a transportation security to the housing Before lifting the bath this security has to be screwed away 11 4 Putting into Operation Rotavapor R 250 EX 4 3 Connecting to the Source of Energy The rotary evaporator may only be connected to the elec trical supply by the trained person who has been assigned responsibility for this task EN 50014 stipulates that apart from the main cable being earthed an eguipotential bonding conductor must be connected in addition This connection is on the back of the device approximately half way up The cooling medium must not exceed the maximum opera ting pressure of 2 7 bar abs shock free Fig 4 1 Fitting the support rod 4 4 Setting Up the Support Rod Place the support rod into the holders provided and fix it tight using the locking screw Put on the positioning ring over the rod Glass assembly D3 has two positioning rings Lay the pivoting clamps on the top of the positioning ring Glass assembly D3 has two pivoting clamps on the upper ring and one pivoting clamp on the lower ring Fit the flask supports 9 including the positioning nut on the lower support rod G Set the flask support with the positioning nut approx 2
28. edium in it Suitable heating media include e Water some Borax should be added when using deio nized water e Heat transfer oils suitable for use at temperatures up to 160 C e g Ucon HTF 14 Fluka AG e Water soluble polyethylene glycol e g Polyethylene glycol 600 Fluka AG After the oil bath has been standing opened for a prolonged period condensation water can collect on the bottom When the bath is used again it must be heated above 100 C with rotating flask in order to drive the water out 4 15 Checking the Installation After installation has been completed and before running the first distillation check to make sure that the installation has been carried out correctly e Inspect the glass for possible damage e Check that all connections cooling medium vacuum have been fixed properly in position e Check that the flask is securely mounted and cannot be moved at the snap flange coupling e Check for leaks in the vacuum system See Chapter 6 Maintenance e When the unit is switched on the version of the software is displayed and a visual check of the alarm LED is made 22 Rotavapor R 250 EX 5 Operation 5 Operation Make sure that the unit has been commissioned properly as described in Chapter 4 HEATER ON OFF ES KS Vi XO Fig 5 1 Intrinsically safe operating unit of the R 250 EX 5 1 Layoutof Operating and Display Elements The R 250 EX i
29. ents that can produce peroxides risk of explosi ons e Mixtures with unknown compositions or contamination e Damaged glassware e Electrostatic charges while working e g during the trans fer of combustible solutions and while drying powders e Temperatures of coolants that lie below the freezing point of the distillate A clogging of the distillate cooler due to freezing out can result in an overpressure 2 6 Safety Precautions All regional and local laws and regulations must be observed The Rotavapor has been grounded internally to dissipate any electrostatic charges on it Rotavapor R 250 EX 2 Safety It is always mandatory to wear personal protective gear such as protective eyewear and protective clothing The machine must never be rotated without the snap flange coupling being closed No distillation may be started unless the evaporating flask is immersed in the bath There is always the risk that the neck of the flask might break off due to the great weight involved There is a risk of becoming scalded while changing evapo rating flasks Wearing gloves prevents this Check the glass components regularly for possible damage spreading impact marks or cracks Never interrupt the grounding conductor protective conductor Otherwise there will be the risk of an electrical shock The operator bears responsibility for providing proper instruc tion of his operating staff To aid him in doing this transl
30. ess steel X2CrNiMo17 13 2 1 4404 or 316L Bath heater control Electronic with PT 1000 control accuracy 2 C Bath temperature range 0 150 C Bath level monitor Liguiphant EEx d II C T4 Overheating protection Separate monitoring circle mechanically reset additional security switch off exceeding the set point by 15 C Bath lift 24 V DC motor 24V with linear drive IP 65 EEx d II C T4 Battery Accumulator PB 12V Vapor temperature measurement PT 1000 Displays Vapour temperature bath temperature rotation speed vacuum pressure Aeration By aeration plug Installation category degree of pollution 2 Cooling area Two or three condensate coolers of 0 6 m each distillate cooler 0 08 m Vacuum pump Recommended suction output in excess of 5 m Cooling water consumption 200 400 I h 2 7 bar abs maximum without pulsation Weight 250 kg without glass Dimensions See relevant Chapter Table 8 Technical Data 9 2 Materials Used Material Part Description Code Chassis X5CrNi 18 10 1 4301 or 304 Bath pan X2CrNiMo 17 13 2 1 4404 or 316L Glass Borosilicate 3 3 Seals Polytetrafluorethylene PTFE Taps Polytetrafluorethylene PTFE Table 9 Materials Used 48 Rotavapor R 250 EX 9 Appendix thuda Wir Nous We erkl ren in alleiniger Verantwortung dass die Maschine d clarons de n
31. g utilized very ef ficiently The solvent should condense out in approx 2 3 to 3 4 of the lengths of the cooling oils present 29 5 Operation Rotavapor R 250 EX 5 5 List of Solvents Solvent Formula Molar Mass Evaporation Boiling Point Spec Gravity Vacuum in mbar for a in g mol Energy in J g at 1013 mbar in g cm Boiling Point at 40 C Acetic acid C H O 60 0 695 118 1 049 44 Acetone CAO 58 1 553 56 0 790 556 n Anyl alcohol n Pentanol C H O 88 1 595 37 0 814 11 Benzene CG 78 1 548 80 0 877 236 n Butanol tert Butanol C H O 74 1 620 118 0 810 25 2 Methyl 2 propanol C H O 74 1 590 82 0 789 130 Carbon tetrachloride CCl 153 8 226 77 1 594 271 Chlorobenzene C H Cl 112 6 377 132 1 106 36 Chloroform CHCI 119 4 264 62 1 483 474 Cyclohexane C H 84 0 389 81 0 779 235 Diethyl ether C H O 74 0 389 35 0 714 850 1 2 Dichlorethane C H Cl 99 0 335 84 1 235 210 cis 1 2 Dichlorethylene C H Cl 97 0 322 60 1 284 479 trans 1 2 Dichlorethylene C H Cl 97 0 314 48 1 257 751 Diisopropyl ether CG O 102 0 318 68 0 724 375 Dioxane C H O 88 1 406 101 1 034 107 DMF Dimethylformamide C H NO 73 1 153 0 949 11 Ethanol CAO 46 0 879 79 0 789 175 Ethyl acetate C H O 88 1 394 77 0 900 240 Heptane CH 100 2 873 98 0 684 120 Hexane C H 86 2 368 69 0 660 335 Isoamyl alcohol 3 Methyl 1 butanol C H
32. he start followed by a specific number EO Message Output from the bath sensor not within the valid range Cause Sensor defective or a short circuit has occurred Action The bath heater is switched OFF The bath is lowered Rotation stops Acknowledgment Switch the unit OFF E1 Message The level sensor is not covered Cause No heating medium in the bath Action Bath heater is switched OFF Bath is lowered Acknowledgment Switch the unit OFF refill bath E2 Message The bath is not reaching the intended maximum height Cause The motor is defective or blocked No voltage Action The lift motor switches OFF Rotation and heating continue Acknowledgment Switch the unit OFF E3 Message The rotary drive does not reaching the required speed or is turning too quickly Cause Drive defective Mechanical blocking No power Semi conductor relay defective Action Bath heater is switched OFF Bath is lowered Acknowledgment Switch the unit OFF EA Message Battery voltage too low Displayed only when starting the unit Cause PB battery defective Action None Acknowledgment Press any button E5 Message EEPROM error Cause Hardware defect Action None Acknowledgment Press any button Work can then be continued but a Service technician must be notified of the problem E27 Message Communication with control panel broken Cause Cables
33. ia Sdn Bhd MY 47301 Petaling Jaya Selangor T 60 3 7832 0310 F 60 3 7832 0309 malaysia buchi com www buchi com BUCHI Support Centers ID Tangerang 15321 T 62 21 537 62 16 F 62 21 587 62 17 indonesia buchi com www buchi co id Singapore BUCHI Singapore Pte Ltd SG Singapore 609919 T 65 6565 1175 F 65 6566 7047 singapore buchi com www buchi com JP Tokyo 110 0008 T 81 3 3821 4777 F 81 3 3821 4555 nihon buchi com www nihon buchi jp Thailand BUCHI Thailand Ltd TH Bangkok 10600 T 66 2 862 08 51 F 66 2 862 08 54 thailand buchi com www buchi co th South East Asia BUCHI Thailand Ltd TH Bangkok 10600 T 66 2 862 08 51 F 66 2 862 08 54 bacc buchi com www buchi com Middle East BUCHI Labortechnik AG UAE Dubai T 971 4 313 2860 F 971 4 313 2861 middleeast buchi com www buchi com Latin America BUCHI Latinoam rica Ltda BR Valinhos SP 13271 200 T 55 19 3849 1201 F 55 19 3849 2907 latinoamerica buchi com www buchi com We are represented by more than 100 distribution partners worldwide Find your local representative at www buchi com
34. ice Manual specific to the unit in question That manual is issued only to authorized Service personnel The addresses of BUCHI s official Customer Service rep resentatives are shown on the back cover of this Operation Manual Please turn to these representatives should you have any malfunctions technical questions or problems in using the unit BUCHI s Customer Service Dept will be ready and happy to offer the following services Spare parts service Repair service Maintenance service Technical consultation 38 Rotavapor R 250 EX 7 Taking out of Operation 7 Taking out of Operation Remove all hazardous materials and clean the unit thoroughly This prevents any risk that individuals could suffer injuries due to contact with hazardous materials 7 1 Storage Always store the unit and spare parts for it in a clean and dry location 7 2 Packing Transport The original packing has been specially designed for trans porting the unit and the glass parts for it Use only the original packing materials for any further transport 7 3 Waste Disposal Table 9 in the Appendix Chapter 9 contains a list of the materials including their material codes used for the most important components of the unit This list has been pro vided in order to enable environmentally correct disposal of the rotary evaporator It ensures that the parts can be separated and sent for appropriate recycling Please refer to the
35. ik Ido Ambacht T 31 78 684 94 29 F 31 78 684 94 30 benelux buchi com www buchi be Russia BUCHI Russia CIS Russia 127287 Moscow T 7 495 36 36 495 F 7 495 98 10 520 russia buchi com www buchi ru FR 94656 Rungis Cedex T 83 1 56 70 62 50 F 33 1 46 86 00 31 france buchi com www buchi fr United Kingdom BUCHI UK Lid GB Oldham OL9 9QL T 44 161 633 1000 F 44 161 633 1007 uk buchi com www buchi co uk DE 45127 Essen T 800 414 0 414 0 Toll Free T 49 201 747 490 F 49 201 747 49 20 deutschland buchi com www buechigmbh de Germany BUCHI NIR Online DE 69190 Walldorf T 49 6227 73 26 60 F 49 6227 73 26 70 nir online buchi com www nir online de America Brazil USA Canada BUCHI Brasil BUCHI Corporation BR Valinhos SP 13271 200 T 55 19 3849 1201 F 55 19 3849 2907 brasil buchi com www buchi com US New Castle DE 19720 T 1 877 692 8244 Toll Free T 1 302 652 3000 F 1 302 652 8777 us sales buchi com www mybuchi com Asia China India Indonesia Japan BUCHI China BUCHI India Private Ltd PT BUCHI Indonesia Nihon BUCHI K K CN 200052 Shanghai T 86 21 6280 3366 F 86 21 5230 8821 china buchi com www buchi com cn Korea BUCHI Korea Inc KR Seoul 153 782 T 82 2 6718 7500 F 82 2 6718 7599 korea buchi com www buchi kr IN Mumbai 400 055 T 91 22 667 75400 F 91 22 667 18986 india buchi com www buchi in Malaysia BUCHI Malays
36. itting onto the receiver using the DN 25 EasyClamp connection e Secure the cooler holder to the two or three coolers 3 as appropriate and insert in the pivoting clamps e Fit the vacuum connector or the third cooler e Fit the branching piece on the cooler and the expansion vessel and connect it using the EasyClamp connection Align the glass components in a vertical position and secure them using the pivoting clamps e Fit the inlet tap 9 into the distribution head and tighten the SVL 30 nut e Screw the temperature sensor 7 into the branching piece e Tighten all EasyClamp connections evenly and in parallel e Turnthe positioning nut to raise the flask support Connect the bracket of the receiving flask to the condensation flask 16 Rotavapor R 250 EX 4 Putting into Operation Fig 4 8 Fitting the flask y Fig 4 10 Tightening the snap flange coupling 4 9 Attachment and Removal of the Flask Attaching the flask e With the snap flange coupling open place the flask in position by hand using the manual flask handler or the crane e Close the first segment of the snap flange coupling The hook must latch in e Close the second segment of the snap flange coupling using the closure screw that can be folded down to con nect the two segments e Tighten the closure screw with ca 4 Nm to prevent glass breakage using the hexagon wrench supplied 1
37. l Removing the evaporating flask seal Seal the holder for the seal by 180 until the opening faces up Take hold of the seal with both hands from above and from the front and pull it out slowly Tilt the seal slightly and carefully pull it all the way out Be careful not to damage the glass centering bulge when doing so Remove the vapor duct Inserting the evaporating flask seal Insert the vapor duct Insert the seal Using gentle pressure shove it across the lock preventing it from twisting out of position and then shove it all the way in Press it with both thumbs until it latches in position 36 Rotavapor R 250 EX 6 Maintenance Fig 6 5 Replacing the seal in the distribution head 6 4 Changing the Seals on the Distribution Head Open the DN70 EasyClamp by releasing the knurled nuts on all 3 bolts but do not screw the nuts completely off Tilt the top bolt out toward the back Open the upper and lower EasyClamp segments and carefully lift the distribution head off the glass assembly Take out the seal laid in at the front and replace it Fig 6 6 Taking out the Vacuum Seal 6 5 Installing and Removing the Vacuum Seal During the running in phase which lasts approx 10 hours the seal may show signs of increased wear This is normal for a PTFE seal Remove the DN70 EasyClamp completely and take off the distribution head Pull the cylindrical seal holder out
38. mmediate vicinity of the unit so that they make be consulted at any time Chapter 2 contains important safety rules which must be ob served to ensure the safe operation of the rotary evaporator We reserve the right to make technical changes without prior notification No portion of this Operating Manual may be reproduced processed using electronic or optical systems duplicated or distributed in any form without the prior written approval of BUCHI Labortechnik AG All rights reserved BUCHI Labortechnik AG 2000 2001 EN Version L R 250 EX Operation Manual Ordering No 096806 1 Scope of Delivery Rotavapor R 250 EX A m a 1 Scope of Delivery Component 1 Chassis complete with Control flameproof enclosure Intrinsically safe control panel Rotation drive flameproof enclosure Main switch lockable Bath lift Heating bath complete 1 Glass assembly comprising 20 or 50 Itr evaporating flask Condensation assembly Receiving assembly Table 1 Scope of delivery Standard accessories comprising Ordering No 1 Clamping tool 1 Wrench Hoses complete Fig 1 1 R 250 EX Overall view 1 Installation tool 1 Instruction Manual German 96805 English 96806 French 96807 Italian 96808 Spanish 96809 1 Documentation CD 96817 Table 2 Standard accessories Marking cr ai 1
39. nd offers energetic advantages The pressure vacuum of distillation the temperature of the heating bath the rotational speed and the size of the evapo rating flask all affect the evaporation output Refer to Chapter 5 3 for how to select the optimum conditions of distillation 10 Rotavapor R 250 EX 4 Putting into Operation 4 Putting into Operation The danger zone around the Rotavapor R 250 EX can extend outward by up to 10 m When working inside this danger zone there is a risk of damaging the glass parts which could cause them to implode 4 1 Installation Location Always set the unit up on a clean stable and flat surface Never at a location where there is a great deal of personal traffic breaking or broken glass Acheck must always be made to ensure that the explosion protection classification of the device is permissible for the ex classification of the room In particular the zone allocation and the temperature class must agree The ambient temperature must be between 5 and 40 C The dimensions of the rotary evaporator are Height Reflux 2 45 m Bullfrog Reflux 2 10 m Descending 2 30 m Width 1 40 m Depth Single receiver 0 80 m Interchangeable receiver 0 85 m 4 2 Unpacking Take care not to break the glass when opening cartons that contain glassware Look for any damage after unpacking It is important that any damage in transit be identified right when unpacking If n
40. otre seule responsabilit que la machine bearing sole responsibility hereby declare that the machine Konformitatserklarung D claration de conformit Declaration of conformity thuba AG Postfach 431 CH 4015 Basel Switzerland Rotavapor R 250 Ex den grundlegenden Sicherheits und Gesundheitsschutzanforderungen nach Anhang der untenstehenden Richtlinie entspricht r pond aux exigences essentielles en ce qui concerne la s curit et la sant fondamentales selon annexe des directives suivantes satisfies the fundamental health and safety protection requirements according to Annex 1 of the directive named below Bestimmungen der Richtlinie D signation de la directive Provisions of the directive 2006 42 EG Maschinen Richtlinie 2006 42 CE Directive aux machines 2006 42 EC Machinery Directive Folgende benannte Stelle hat das Konformit ts bewertungsverfahren nach der Maschinenrichtlinie 2006 42 EG Anhang IX durchgef hrt L organe reconnu ci apr s a proc d l valuation de conformit prescrite par la directive Machine 2006 42 CE Annexe IX The following notified body has carried out the conformity assessment procedure according to the Machinery Directive 2006 42 EC Annex IX Bevollm chtigter f r die Zusammenstellung der technischen Unterlagen Responsable s mandat s pour I laboration du dossier technique Persons authorized to compile the technical documentation Titel
41. ower the bath with the battery because the voltage of the battery could be too low in cause of a power failure 23 5 Operation Rotavapor R 250 EX 5 2 Setting the Maximum Setpoint Temperature and Lowering the Bath Automatically Setting the Maximum Setpoint Temperature The input mode of the maximum setpoint temperature is activated by pressing the Set Temp button and simultaneously turning on the main switch The required figure is set by pressing the SET UP and SET DOWN buttons The entry is not saved until the Set Temp button is pressed The unit is then switched into operating mode Setting the option for automatic lowering of the bath in the event of a power failure This option is activated by pressing the Lift down button 9 and simultaneously turning on the main switch It is indicated on the display whether the bath is moving down on or not off It is possible to switch between these two options by pressing the Lift down button 9 The entry is not saved until the Set Temp button is pressed The unit is then switched into operating mode If the option is activated the bath is automatically lowered when the equipment is switched on This ensures that if there is a short power failure the bath will be lowered If this option is not acticvated in case of a power failure the product can be overheated 24 Rotavapor R 250 EX
42. por R 250 EX is connected directly from the con densation unit to the vacuum source For the reflux glass assembly both condensers are connected to the vacuum hose via a Y piece In the case of the descending glass assembly the vacuum hose is connected at the vacuum connector or at the third cooler Cooling medium The cooling medium is connected at the valve fittings The flow is adjusted by means of the tap In the case of the reflux glass assembly the distillate cooler is connected to one cooler from the valve Q via a Y piece and the second cooler is connected in parallel Finally the two condensers are connected via a Y piece and the cooling medium is returned at the wide hose nipple In the case of the descending glass assembly the cooling medium is distributed between the two condensers from the valve via a Y piece and is then returned via a second Y piece Alist of the supplied hoses with Part Numbers can be found in Chapter 8 6 If a third cooler fitted downstream is used it is connected in parallel across a special water distributor head A second cooling circuit at a lower temperature can also be used so that the third cooler becomes a cold trap 21 4 Putting into Operation Rotavapor R 250 EX 4 14 Heating Medium The level sensor is designed for temperatures up to max 150 C Higher temperatures cannot be obtained with the unit Never operate the heating bath when there is no heating m
43. s Assembly Attaching and Removing Flasks O Operating the Shut off tap 1 Operating the Inlet Valve 2 Flask Suction Optional 4 Heating Medium 5 Checking the Installation Operation Layout of Operating and Display Elements 5 2 Setting the Maximum Setpoint Temperature and SOOD Om On OG A D 1 mh O OSI 0 01 E obh h m A D 4 D A D D Table of Contents Lowering the Bath Automatically 24 5 3 Vacuum Controller 25 5 4 Selection of Distillation Temperature 29 5 5 List of Solvents 30 5 6 Troubleshooting 31 5 7 Resetting the Safety Temperature Cutoff 32 5 8 Error Messages 33 6 Maintenance 34 6 1 Cleaning 34 6 2 Dismantling Assembling the Snap Flange Coupling 35 6 3 Removing Inserting the Evaporating Flask Seal 36 6 4 Changing the Seals to the Distribution Head 37 6 5 Installing and Removing the Vacuum Seal 37 6 6 Testing for Leaks 38 6 7 Customer Service 38 7 Taking out of Operation 39 TA Storage 39 7 1 Packing Transport 39 7 1 Waste Transport 39 8 Spare Parts and Accessories 40 8 1 Spare Parts Glass Assemblies R RB 41 8 2 Spare Parts Glass Assemblies D D3 42 8 3 Spare Parts Drip Tray 43 8 4 Seals Tools 44 8 5 Accessories 45 8 6 Hose Connections 47 9 Appendix 48 9 1 Technical Data 48 9 2 Materials Used 48 9 3 Declaration of Conformity 49 Read this Operating Manual through carefully before using the Rotavapor R 250 EX Always keep these Instructions readily available in the i
44. s operated via the main switch which can be secured to prevent it from being switched on and the control panel which has an intrinsically safe design i A vacuum display is also located on the front panel The operating unit is shown in Figure 5 1 It consists of two digital displays and eight operating buttons Display 1 Actual bath temperature and setpoint bath tem perature The mode is displayed on the side LED 5 Display 2 Rotation speed and vapor temperature The mode is displayed on the side LED Heater Heater on off displayed by LED When the heater is warming up the LED illuminates Activating the setpoint bath temperature Setting The display switches to setpoint mode D Setting the bath temperature setpoint If no entry is made within 2 seconds the display returns to the actual bath temperature The red LED illuminates if the over temperature protection has been triggered Rotation 9 Rotation on off shown by LED O The rotation speed can be changed using these two pushbuttons In Display Mode the information shown on the display changes between the rotation speed and the vapor temperature Bath lift OT 9 These buttons lower and raise the bath respectively When the unit is switched off or in the event of a power failure the bath can be lowered automatically so that the evaporating flask is always separated from the source of heat Do not use the main switch to l
Download Pdf Manuals
Related Search