Buchi Rotavapor R-200, Rotavapor R-205 Operating Instructions Manual

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BÜCHI Rotavapor R-200/205

Table of contents

Contents

en, Version L (60 pages) Order number

R-200/205 Operating Instructions 96776

Read these operating instructions thoroughly before you use the BÜCHI Rotavapor R-200/205. Keep these instructions near the apparatus, so that they are quickly accessible. Chapter two contains important safety instructions. This information is essential as regards safe operation of the rotary evaporator.

We reserve the right to make technical modifications without prior notice. No part of these operating instructions can be reproduced or processed, copied or distributed using electronic or optical systems without permission in writing from Büchi Labortechnik AG. All rights reserved.

1 Scope of Delivery 2

2 Safety 4

3 Function 9

4 Putting into operation 12

4.1 Point of use 12

4.2 Electrical connections 12

4.3 Heating bath 13

4.4 Steam tube and sealing system 13

4.5 Glass assembly 14

4.6 Combi-clip 14

4.7 Condenser fixation 14

4.8 Submerging angle into the heating bath 15

4.9 End catch when lowering and raising the evaporating flask 15

4.10 Adjusting tension of the servo jack rope 16

4.11 Tube connections 17

4.12 Tube schema 18

4.13 Display module for vapour temperature and rotation speed 19

4.14 Combination with Büchi Vacuum Controller V-800/805 20

5 Operation 22

5.1 Rear connections 22

5.2 Controls Büchi Rotavapor R-200 22

5.3 Controls Büchi Rotavapor R-205 23

5.4 Lowering and raising the evaporating flask 23

5.5 Heating bath 24

5.6 Distilling 25

5.7 Choosing distillation conditions 27

5.8 Solvent table 29

5.9 Troubleshooting 30

6 Maintenance 31

7 Taking out of operation 34

8 Spare parts and accessories 35

9 Appendix 57

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1 Scope of Delivery

Picture 1: R-205 total view

1 Scope of Delivery

Picture 2: Display module R-205

Base apparatus

Büchi Rotavapor R-200 including bath B-490 Büchi Rotavapor R-205 including bath B-490

Table 1: Base apparatuses

Caution Condenser mounting (40607 + 40608) in combination with glass assesmbly A not included.

Glass assemblies

Glass assembly A uncoated or 40630

Plastic +Glas coated 40632

Glass assembly V uncoated or 40600

Plastic +Glas coated 40602

Glass assembly C uncoated or 40640

Plastic +Glas coated 40642

Glass assembly S uncoated or 40650

Plastic +Glas coated 40652

Glass assembly E uncoated or 40660

Plastic +Glas coated 40662

Glass assembly CR uncoated or 40670

Plastic +Glas coated 40672

Table 2: Glass assemblies

Standard accessories: Order number

1 Mains cable Bath Rotavapor

Type CH plug type 12 or PNE, 2.5 m 10010 40833

Type Schuko 10016 40834 Type GB 17835 40831 Type AUS 17836 40832 Type USA 10020 40830

1 Operating instructions

German 96775 English 96776 French 96777 Italian 96778 Spanish 96779

BÜCHI Heating bath B-490 cpl.

230 V 50/60 Hz 40400 100-120 V 50/60 Hz 40404

Table 3: Standard accessories

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1 Scope of Delivery

Picture 3: V-800 and V-805

Picture 4: Automatic sensor to V-805

Picture 5: Remote control to V-800/805

Additional accessories for advanced + professional resp. facultative accessories

Büchi Vacuum Controller V-800, 230 V 40736 Büchi Vacuum Controller V-800, 120 V 40737 Büchi Vacuum Controller V-805, 230 V 40738 Büchi Vacuum Controller V-805, 120 V 40739 Valve unit to V-800/805 37968 Holder for valve unit 37968 to 40810

Rotavapor R-200/205 Remote control for V-800/805 40735 Automatic sensor to V-805 40741

only for glass assembly V+S Kommunication set 40235

between V-800/805 and R-200/205

Table 4a: Facultative accessories

Upgrade R-200 zu R-205

Upgrade R-200 to R-205 40320

Display for rotation and vapour (without probe)

1 Sensor for measuring the vapour tempe- 40340

rature (only with glass assembly V+S+E)

Table 4b: Facultative accessories

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2 Safety

This apparatus has been built according to state-of-the-art and recognised safety rules. Still, it can be associated with risks and hazards:

• If the apparatus is operated by insufficiently trained personnel.

• If the apparatus is not used properly.

2.1 Symbols

Stop

Information on hazards, which can lead to heavy material damages, to severe or life-threatening injuries.

Warning

Information on hazards which can be harmful to your health and lead to material damage.

Please note

Information, pointing to technical requirements. If these are not complied with, disturbances, reduced economic efficiency and product losses can result.

Warning

Surface temperature more than 60°C.

2.2. Requirements placed on operators

This apparatus can only be used by expert personnel or other persons, who, because of their education or profession are familiar with hazards, which can arise when this apparatus is operated.

Personnel lacking this kind of training or persons, still being trained, require thorough instructions. These operating instructions are the basis for such training measures.

2.3 Proper use

The Rotavapor is not intended for activities with excess pressure. Thus, you should make sure that no excess pressure develops in the Rotavapor. This apparatus has been designed and built for laboratories. It is to be used for activities, associated with evaporating of solvents.

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It is used for:

• Distilling solvents

• Vaporising of solvents and suspensions

• Recrystallisation

• Synthesis and cleaning of fine chemicals

• Soxhlet extractions

In the case of drying powders, electrostatic charges can form.

Proper use of the apparatus includes caring for it and carefully handling it in accordance with the instructions found in these operating instructions. The heating bath is the heating source for distillation, whereby the heating medium must be water or heat carrier oil. (see Chapter Heating bath). The Rotavapor/Rotary Evaporator can only be operated with a heating bath.

2.4 Improper use

Applications not mentioned above are improper. Also, applications, which do not comply with the technical data are considered improper . The operator assumes sole risk for any damages, attributed to such improper use.

Especially the following uses are not permitted:

• Use of the apparatus in rooms, which require protected apparatuses.

• Calibration apparatus for other apparatuses.

• Determination of samples, which can explode or ignite (example: explosives, etc.) due to shock, friction, heat or spark formation.

• Work in excess pressure.

• Working with other water or oil baths other than the heating bath B-490, especially the use of heating sources with temperatures above 180°C (e.g. a Bunsen burner, etc.).

• Processing of hard, brittle materials (example: stones, soil samples, etc.), which can lead to destruction of the evaporating flask.

• 3 Kilogram in an evaporating flask is the maximum weight you can use with the Büchi Rotavapor. If the evaporating flask is overloaded the joint adapter or the flask could break.

2 Safety

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2.5 Fundamental hazards

Fundamental hazards are associated with:

• Hot surfaces, occurring during operation

• Hot water or oil bath (up to 180 °C)

• Solvents, which can form peroxides (explosion hazards)

• Solvents with low ignition, flame, and/or explosion temperatures

• Mixtures with unknown compositions or contamination

• Combustible gases or solvent vapour in the immediate vicinity of the rotary evaporator

• Damaged glassware (implosions)

• Electrostatic charges when solvents are filled, or in the case of drying powder.

Contact with live parts can be fatal.

Covers can only be removed with conventional tools by authorised repair personnel. The apparatus cannot be put into operation with damaged glassware.

2.6 Safety measures

Regional and local laws and regulations must be respected.

Basically, personal protective equipment such as protective eye goggles, protective clothing and gloves are to be worn.

There is a risk of scalding when hot evaporating flasks are replaced. Suitable gloves can prevent this.

Use of optional Büchi protective equipment like PLASTIC+ GLAS coated glass components and protective shields protect operators in case of accidents.

You can only use recommended standard glass assemblies. You cannot assembly the unit from arbitrary glass components. Each glass parts have to be checked on damages before use. The joints have to be greased. All screw joints have to be protected against overloaded stress.

2Safety

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2 Safety

Only those components of the Rotavapor can be installed and removed, which fulfil the intended function. This can be done by hand or with the supplied tool. Only authorised repair personnel can remove protective equipment and covers with the help of conventional tools. You should only move the heating bath when it is cool.

If you use an oil bath, make sure that water cannot enter the bath, because hot oil can splash.

The operator is responsible for training his personnel. For this purpose, you can be order these operating instructions in other languages. These operating instructions must be available for operating personnel at the point of use of the apparatus as component of the rotary evaporator.

The operator shall inform the manufacturer immediately about any safety relevant events, occurring during use of the apparatus.

2.7 Modifications

Modifications to the apparatus or to spare parts and accessories as well as use of other spare parts and accessories than those mentioned in these operating instructions are only permitted with the written consent of Büchi Labortechnik AG.

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2.8 Safety elements

Electric/ electronics

• The 230V baths are equipped with safety fuses.

• The bath is equipped with a mechanical and an electronic over-temperature protection

Operation/product contacting parts

• Safety catch for regulating the dip depth of the evaporating flask into the heating bath

• Combi-clips for fixing the evaporating flask and for safe loosening of fixed ground-glass joints (evaporating flasks)

• Ball joint clip for safe fixing of the receiving flask

• Rods and holders for fusing of the glass assemblies

• The electrical servo jack is equipped with an electronic over-temperature protection and a power-up time limit.

• The driving unit is equipped with an electronic overtemperature protection

• A safety spring protects the vapour duct from dropping out

Glass

• Use of high quality, inert 3.3 borosilicate glass

• Screw GL 14 tube nipples for preventing glass breakage

OPTIONAL:

PLASTIC + GLAS (abbreviated PLG) is a unique protective layer for glass components. It offers improved mechanical rupture resistance and increases protection against broken glass. It also makes sure that the sample is not lost in the receiving flask, if the flask is damaged.

The Büchi protective shield protects operators from flying broken glass, solvent splashes and hot bath liquid in case of accidents.

With the rod and pivoting clamp the condenser can be additionally clamped.

2 Safety

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3 Function

3.1 Definitions

Some terms come up in these operating instructions, which require some clarification.

Glass assemblies:

A: with diagonal condensers, for standard distillations

V: with vertical condenser, for standard distillations, 17 cm

less place requirement than glass assembly A

C: with cold traps for dry ice, for distilling solvents with low

boiling points

S: with vertical condenser and reflux capability

CR: with cold traps and reflux capability, for distilling solvents

with low boiling points

E: with descending condenser without reflux capability, ide-

al for solutions, with tendency to foaming

PLASTIC+GLAS

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3 Function

3.2 Functional principle

With a vacuum rotary evaporator, single step distillations are performed quickly and in a product friendly manner. The basis of this procedure is the evaporation and condensation of solvents using a rotating evaporating flask.

Distillations can be performed under vacuum. This increases performance and helps to protect products. Distillations can be performed under vacuum and atmospheric pressure.

An example using the V assembly

! Evaporation area

The solvent is heated over a heating bath. In the rotating evaporating flask, a thin solvent film forms on the inside of the flask, resulting in increased evaporation rate. Rotation also results in even mixing of the sample and thus, prevents stationary over heating in the flask. (Maximum weight 3 kg)

" Rotation drive

The drive unit makes sure that the evaporating flask rotates evenly with the resulting advantages (see item 1).

# Cooling area

The solvent vapour flows very quickly in the condenser. Here, the energy in the solvent vapour is transferred to the cooling medium (mostly water) and the solvent condenses.

$ Receiving flask

The receiving flask receives the condensing solvent.

Vacuum

Vacuum reduces the boiling temperature and thus increases performance of distillation. Evaporating performance is influenced by distillation pressure (vacuum), heating bath temperature, rotation speed and size of evaporating flask.

See Chapter 5.7, ”Selecting distillation conditions”, for information on selecting the optimum distillation conditions.

Picture 6: R-205 Basic Glass assembly

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3.3 Overview of components

! Quick-action jack " Drive part with sealing system # Electronics head $ Evaporating flask % Glass assembly & Receiving flask ' Combi-clip ( Heating bath ) Display module for rotation speed and vapour

temperature (optional)

* Büchi Vacuum Controller (optional) + Valve unit (optional)

Picture 7: R-205 Professional with Glass assembly V

3 Function

)

(

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BÜCHI Rotavapor R-200/205

4 Putting into operation

Look for damages when you unpack the unit. It is important that you detect any transport damages when you unpack. If necessary, you must prepare a status report immediately (informing postal company, railway company or transportation company).

Keep the original packaging in case the unit needs to be transported later.

4.1 Point of use

The apparatus must be placed on a stable, horizontal plane. Please take note of the max. product dimension. It cannot be used in EX-protected rooms. Normally, distillations are to be performed under vacuum with the rotary evaporator only in running hood.

If, for space related reasons, this is not possible, the optional protective shield should be mounted and the exhaust gas should be led from the pump into the running hood.

4.2 Electrical connections

Determine whether the voltage on the socket corresponds to the voltage given on the apparatus plate.

Always connect the apparatus to a earthed socket. External connections and extension cables must lead a earthed conductor lead (3-pole couplings, cable or plug equipment). The earthed conductor lead cannot be interrupted. As a result, risks due to internal defects are avoided.

Electronstatic sparks may damage the apparatus.

Bath and rotary evaporator are connected to the mains by the mains cables.

Cabling

! mains supply bath " mains supply rotary evaporator

Picture 8: Power connection of the Bath and Rotavapor

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4 Putting into operation

Picture 9: Bath B-490

4.3 Heating bath

The bath is placed onto the base plate of the rotary evaporator. If you need to move the bath, you can pull on the inserted handle ! in the base plate.

Heating medium

Never operate the heating bath without heating medium!

The following are suitable as heating medium:

• Distilled or deionised water for temperature range between 20 °C to 85 °C

• Heat carrier oil or water soluble polyethylene glycol (PEG) for a working range up to 250 °C.

Saving energy

In the case of heating baths, there are various ways to save energy. By using floating balls in the water bath, evaporation of water is reduced. As a result, heating of the bath is switched on less often. This measure helps to save energy up to 50 %. At the same time approximately 70 % less water is used. (see Chapter 8.11, Miscellaneous).

You should turn on the heating bath around 10 –15 minutes before starting the distillation, since the bath has a quick warmup time. You should also turn off the heating bath after a distillation.

4.4 Steam tube and sealing system

In contrast to previous generation of Büchi Rotavapor systems, the new Büchi Rotavapor R-200/205 needs only one sealing system, which is suitable for distillations under reflux. All materials, which come into contact with chemicals are made of glass, PTFE and ETFE.

To prolong the service life of seals, the following should be respected:

Seals:

• Never grease seals

• Never touch seals with sharp objects

• Clean seals with soap and water or ethanol

• Control seals regularly

Picture 10: Explosion drawing of sealing system

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4 Putting into operation

4.5 Glass assembly

You can see the composition of the glass assembly on the illustrations in 8.4, Glass assemblies.

• All flanges (condenser, distribution heads, evaporating flasks, ground adapter) can be fastened, without having to remove the screw cap. They must only be opened enough so that the flange can be pushed through.

• Glass assemblies V, S, C, E, CR are to be secured using foreseen condenser fixation.

• The receiving flask is to be secured with the clip foreseen for this purpose.

Only glassware in perfect condition is to be used. The glassware cannot have tears, stars, or other damages. You must check glassware for damages before each use. To achieve optimum tightness of the system, all joints are to be greased on the condenser side.

4.6 Combi-clip

The combi-clip fulfils two functions:

! Holding the evaporating flask " Loosening of the evaporating flask # Handle

The handle # clicks in when it is in upward position.

4.7 Condenser fixation

! Condenser fixation with 3 adjustment possibilities, depending

on the used glass assembly.

" Screw for tightening and loosening the rod.

Picture 11: Combi-clip function

Picture 12: Condenser fixation

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4.8 Submerging angle into the heating bath

If, use of the Rotavapor requires employment of another angle than 30 °, the angle is to be set as follows:

• Turn off the apparatus

• Hold the glass assembly with one hand and loosen the handle screw ! with the other hand

• Put the drive part " into the desired position

• Retighten the handle screw !

You cannot set the submerging angle when the apparatus is operating.

The lowest quantity of solvent is lost when the condenser is in a vertical position.

When the handle screw is loosen the glass assembly can tilt to the left, which can result in glass breakage. Hold the glass assembly when you loosen the handle screw.

4.9 End catch when submerging the evaporating

flask

By adjusting the catch screw !, the lower catch of the quick- action jack can be set so that the evaporating flask can be lowered into the bath as you desire.

Setting is to be chosen so that:

• In the case of lower catch of the quick-action jack neither adapter or combi-clip nor evaporating flask touch the edge of the bath

• The flask is not on the bottom of the bath

• No heating bath liquid flows out of the bath when the flask is submerged

• The stop screw ! must be freely movable in the air.

Picture 13: Drive unit with fixing screw

Picture 14: Screw for end catch of the servo-jack

4 Putting into operation

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BÜCHI Rotavapor R-200/205

4.10 Adjusting tension of the servo jack rope

It can happen that the servo jack can not be lowered to the very end, specially after transportation of the Rotavapor. In this case the tension of the rope has to be adjusted. This can be done by the customer.

1. If the servo jack can not be lowered to the end, turn the screws (1) on the front side of the rotavapor, 1/4 turn clockwise.

2. Repeat step 1 if the servo jack doesn't go properly down.

3. Turn the screws 1/4 turn unclockwise till the lever after pressing down is not comming up on it self.

Picture 15: Adjusting tension of the servo jack rope

4 Putting into operation

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4 Putting into operation

4.11 Tube connections

Cooling water

• Use GL-14 screwed connections

• The tubes used must all have the same inside diameter (approximately 6 mm)

• For safety reasons, the tubes are to be secured with commercial tube pivoting clamps or cable binders.

• To save cooling water, a recirculating chiller can be used.

• Brittle tubes are to be replaced.

Vacuum

• Use GL-14 screwed connections

• The tubes used must all have the same inside diameter (approximately 5 mm)

• Keep vacuum tubes as short as possible.

• If no Büchi Vacuum Controller is used, a Woulff bottle is to be connected between the vacuum source and Rotavapor.

• If a Büchi Vacuum Controller is used, a valve unit should be connected.

• Tubes do not need to be secured.

• Brittle tubes are to be replaced.

! Glass assembly " Vacuum sensor (to valve unit &) # Valve unit $ Connection to glass assembly % Connection to pump & Connection to Vacuum Controller ' Connection for inert gas

The separator of the valve unit or a Woulff bottle serves as safety, so that contamination, solvent or water (if a water jet pump is used) cannot pass through the tubing neither from the vacuum source into Rotavapor nor vice versa.

Picture 16: R-200/205 with Vacuum Controller

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BÜCHI Rotavapor R-200/205

4 Putting into operation

Picture 17: Tube schema

! Cooling Water " Vacuum connection (to valve unit $) # Vacuum sensor (to valve unit &) $ Connection to glass assembly " % Connection to pump & Connection to Vacuum Controller ' Connection for inert gas ( Valve unit (see end of chapter 4.13)

4.12 Tube schema

(

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BÜCHI Rotavapor R-200/205

Picture 18: V condenser with position vapour temperature sensor, and

rear of the display module

4.13 Display module for vapour temperature and

rotation speed

Installing the display module

When the display module is installed into a Büchi Rotavapor R-200, the unit becomes the Büchi Rotavapor R-205. If you order R-205, this display module is already installed. If this module is ordered separately, you can retrofit it as follows:

! Screw out screw ! and pull the cover plate to the back. " Lift the lower spring-loaded catch of the front plate and

remove the front plate

# Connect the display module with the flat belt cable in the

apparatus

$ Connect the 2 pole cable with the display module.

Latch display module from the front to the Rotavapor and insert it on the rear of the plug socket into the foreseen holder (as shown in the picture $).

% Screw the tower cover back on.

Installing the vapour temperature sensor

So that the vapour temperature can be displayed, the accompanying sensor must be connected. It is plugged into the socket ! located on the rear of the module. The Sensor is lead into the corresponding opening of the condenser " and screwed.

4 Putting into operation

top

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BÜCHI Rotavapor R-200/205

4.14 Combination with Büchi Vacuum Controller V-800/805

The new Büchi Vacuum Controllers V-800/805 are optimally adapted to the design of the Rotavapor R-200/205.

Scoe of delivery

If the Vacuum Controller V-800/805 and valve unit are ordered together with the Rotavapor R-200/205, these are already installed into the units.

Retrofitting

If a Rotavapor R-200 or R-205 is retrofitted, you must proceed as follows:

Fixation

• Screw out screw ! and pull the cover plate to the back.

This cover % will not be used any more.

• Remove the cable socket " and plug it into the Vacuum

Controller.

• Place the Vacuum Controller V-800/805 on the special

cover # and draw the cover from the rear side on the Rotavapor. Fix the cover with the screw.

• Control cable $ for the Rotavapor

The holding device for the valve unit can be fixed on the left side of the tower of the Rotavapor. The valve unit can be fixed on the holding device.

Cabeling of the Rotavapor

& Connect mains supply bath to the mains ' Connect mains supply of rotary evaporator to the mains ( R socket on Vacuum Controller is connected to the socket

on the Rotavapor

) Switchbox socket on the V-500 is connected to the

”PUMP” socket on the Vacuum Controller

* Valve socket on Vacuum Controller is connected to the

valve unit ,

+ CW socket on Vacuum Controller is connected to the

cooling water valve

, Valve Unit

Picture 19: Installation of Vacuum Controller on Rotavapor

4 Putting into operation

# "

)

(

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BÜCHI Rotavapor R-200/205

Cabling with valve unit

! Connection ”R1” of the valve unit is connected to the glass

assembly

" ”Pump” connection of valve unit is connected to the pump

inlet

# ”V.Contr” connection of valve unit is connected to the

Vacuum Controller

Function of individual elements

Connecting cable Controller – Rotavapor

The apparatuses are connected together in such a manner, that, if you so desire, the start/stop of rotation and raising and lowering of the evaporating flask, can function via the Vacuum Controller, i.e.:

• When distillation is started via the Vacuum Controller V800/805, the evaporating flask moves to the previously set end catch and rotation is switched on.

• When distillation is stopped via the Vacuum Controller V800/805, rotation switches off and the evaporating flask is raised from the bath.

Valve unit

When the set point on the Vacuum Controller is reached, the valve unit shuts off the connection to the pump. At the same time, the valve unit serves as separator, i.e., the pump is protected against contamination.

Switchbox of V-500

When the set point on Vacuum Controller is reached, the pump is switched off. If the system pressure increases above the hysteresis set on the Vacuum Controller, the pump is switched back on.

Fixation and current supply are only suitable for Büchi Vacuum Controller V-800 and 805. Older Büchi Controllers or other Controllers can be mounted on an extra rod and must not be connected to the power supply of the Rotavapor.

See relevant operating instructions for detailed information on operation of the Vacuum Controller.

4 Putting into operation

Picture 20: Valve unit

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5 Operation

Note that the apparatus must be properly put into operation in accordance with the instructions in Chapter 4, Putting into operation

5.1 Rear connections

! Mains supply for R-200/205

" Fastening screw for top plate of R-200/205

# Socket for vapour temperature sensor (only for R-205)

$ Control cable of Vacuum Controller on R-200 or R-205

% Mains supply for V-800/805

5.2 Controls Büchi Rotavapor R-200

! Main switch On/Off

" Setting of rpm

Rotation can be set infinity variably between 20 and 280 rpm. When the Rotavapor is turned on by !, the rotation starts with the preselected rotation speed.

Picture 21: Rear electronics head and Vacuum Controller

Picture 22: Front panel R-200

5 Operation

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5 Operation

5.3 Controls Büchi Rotavapor R-205

! Main switch On/Off

" Setting of RPM

Rotation can be set variably between 20 and 280 rpm. When the Rotavapor is turned on by !, the rotation speed starts with the preselected rotation speed.

# Display for rotation speed in RPM.

$ Display for vapour temperature in °C (only with vapour

temperature sensor for glass assembly V, S, or E.

5.4 Lowering and raising the evaporating flask

With the electric quick-action jack, the evaporating flask can be lowered into and raised from the water bath. This operation requires no physical effort. Motion is effected by an integrated motor. The button ! for the corresponding direction is located on the handle of the quick-action jack.

If there is a technical defect or current is interrupted, the evaporating flask can also be moved from the bath manually. By pressing the lever " on the front of the bottom plate, the brake of the lift is released. Depending on glass assembly, lowering to be supported by hand.

For adjusting the quick-action jack see Chapter 4.10.

Picture 23: Front panel R-205

Picture 24: Lowering and raising the evaporating flask

DOWN

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5.5 Heating bath

As soon as the mains plug is plugged in, the bath starts to warm up, provided the main switch is turned on. Thus, make sure that there is always heating bath liquid in the bath.

Temperatures up 180 ° are possible with the heating bath. To avoid accidents:

• Never remove rotating flasks from the bath because splashing oil can lead to burns

• Make sure that no liquid can flow from the bath when the evaporating flask is submerged.

• Installation of protectiv shield only if if heating bath is cold.

If the desired temperature is set via the turn button-the display jumps from ACTUAL to SET point. The DESIRED temperature can now be set. After approximately 2 seconds, the display jumps back to the ACTUAL value.

The temperature scale via the SET point potentiometer is 2coloured. Blue marks the water range, i.e. the temperature range below 100 °C, orange marks the oil range, i.e. temperature above 100 °C. For safety related reasons, when activities are performed above 100 °C, the regulator is to be turned over the 100 °mark against a mechanical resistance. To be able to regulate the upper range, heat transfer oil for a operating range up to 250 °C must be used.

! Main switch " Potentiometer for setting the bath temperature in °C # Display of actual bath temperature $ Green indication lamp means ”bath is warming up” % Orange indication lamp means ”temperature above 100 °C”

Attention: Hot surface

Picture 25: Front panel of heating bath B-490

5 Operation

! # $ %

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5 Operation

5.6 Distilling

In this section, starting, optimising and ending a distillation are shown on the basis of a checklist.

Apparatus is completely installed

• All electrical connections are correct

• All sealings have been correctly inserted

• All joints have been greased

• Evaporating flask is empty mounted

Evacuating apparatus in order to test tightness

(see 6.5, Functional test) max 3 mbar pressure increase/min.

Setting heating bath to desired value

Heating liquid has reached set temperature

Open cooling water

Allow cooling water to flow through the condenser at approximately 40 – 50 l/h and not warmer than 20 °C.

Fill solution into the evaporating flask

• The solution can also be sucked in using vacuum

Start evacuation process

• Choose pressure in such a way that the boiling point of the solvent is 40 °C (see Table, Chapter 5.7)

• Set rotation

• Use quick-action jack to sink flask into the bath

• After set vacuum has been reached, wait for 1- 2 minutes to see whether distillation begins

• If distillation does not start, parameters must be optimised again (Sink pressure gradually or increase bath temperature)

In the optimum case, condenser is to be 2/3 to 3/4 burdened, otherwise sink the pressure until this is the case (Not possible for all distillation operations!).

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When distillation «dies out»

Replace the receiving flask, to eliminate the risk of back evaporating. Then, continue distillation. Repeat this process until all desired solvent is distilled off.

At the end of distillation, start rotation, pull up the flask and vent the system.

Turn off the heating bath to save energy, if you do not intend to immediately perform another distillation.

5 Operation

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5 Operation

5.7 Choosing distillation conditions

To achieve optimum distillation conditions when rotary evaporators are used, the energy, supplied for distillation from the heating bath, must be removed via the condenser. To guarantee this, operations should be performed according to this rule of thumb.

Cooling water Vapour Bath

Max. 20°C 40°C 60°C

How can you achieve these conditions?

• Set the bath temperature to 60 °C

• Set cooling water, temperature no higher than 20°C

• Allow cooling water to flow through the condenser at approximately 40 – 50 l/h

• The working vacuum is to be chosen, so that the boiling point of the solvent is 40 °C. You can get the corresponding pressure from the Solvent Table (next page).

Advantages associated with 60 °C bath temperature:

• The evaporating flask can be replaced without risk of scalding.

• The evaporation rate of the water from the heating bath is not very high (energy loss).

• The heating bath energy is employed at a good degree of efficiency.

This rule can also be applied to lower bath temperatures, for example:

Cooling water Vapour Bath max. 0°C 20°C 40°C

Optimising distillation:

Depending on distilled solvent, distillation may have to be optimised again. However, before you optimise distillation again, the heating bath must have reached 60 °C.

The following applies: condensation of solvent should be 2/3 to 3/4 of the existing condenser coil.

Picture 26: R-205: 20–40–60° C rule

ΔΔ

ΔT2 (min. 20°C)

(min. 20°C)

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BÜCHI Rotavapor R-200/205

There are basically two possibilities for optimising distillation:

1. Slowly reduce pressure again

Bath must have reached 60 °C (Boiling point is reduced, increase of ΔT1, resulting in increase of distillation capacity)

2. increasing bath temperature

(Increase of ΔT1, resulting in increase of distillation capacity).

By increasing the bath temperature, not all of the additional energy is supplied to distillation, but more is also discharged into the environment. This is due to the increase temperature difference between bath and environmental temperature.

5 Operation

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BÜCHI Rotavapor R-200/205

5 Operation

5.8 Solvent table

Solvent Formula Molar Mass Evaporation Boiling point Density Vacuum in mbar for

in g/mol energy in J/g at 1013 mbar in g/cm3boiling point at 40°C

Acetone C3H6O 58.1 553 56 0.790 556

n-amylalcohol, n-pentanol C5H12O 88.1 595 37 0.814 11

Benzene C6H6 78.1 548 80 0.877 236

n-butanol, tert.butanol C4H10O 74.1 620 118 0.810 25

(2-methyl-2-propanol) C4H10O 74.1 590 82 0.789 130

Chlorobenzene C6H5Cl 112.6 377 132 1.106 36

Chloroform CHCl3 119.4 264 62 1.483 474

Cyclohexane C6H12 84.0 389 81 0.779 235

Diethylether C4H10O 74.0 389 35 0.714 Atmospheric

1,2-dichloroethane C2H4Cl2 99.0 335 84 1.235 210

1,2-dichloroethylene (cis) C2H2Cl2 97.0 322 60 1.284 479

1,2-dichloroethylene (trans) C2H2Cl2 97.0 314 48 1.257 751

Diisopropyl ether C6H14O 102.0 318 68 0.724 375

Dioxane C4H8O2 88.1 406 101 1.034 107

DMF (dimethyl-formamide) C3H7NO 73.1 153 0.949 11

Acetic acid C2H4O2 60.0 695 118 1.049 44

Ethanol C2H6O 46.0 879 79 0.789 175

Ethylacetate C4H8O2 88.1 394 77 0.900 240

Heptane C7H16 100.2 373 98 0.684 120

Hexane C6H14 86.2 368 69 0.660 335

Isopropylalcohol C3H8O 60.1 699 82 0.786 137

Isoamylalcohol,

3-methyl-1- butanol C5H12O 88.1 595 129 0.809 14

Methylethylketone C4H8O 72.1 473 80 0.805 243

Methanol CH4O 32.0 1227 65 0.791 337

Methylene chloride, dichloromethane CH2Cl2 84.9 373 40 1.327 Atmospheric

Pentane C5H12 72.1 381 36 0.626 Atmospheric

n-propylalcohol C3H8O 60.1 787 97 0.804 67

Pentachloroethane C2HCl5 202.3 201 162 1.680 13

1,1,2,2-tetra-chloroethane C2H2Cl4 167.9 247 146 1.595 35

Tetrachlorocarbon CCl4 153.8 226 77 1.594 271

1,1,1-trichloroethane C2H3Cl3 133.4 251 74 1.339 300

Tetra-chloro-ethylene C2Cl4 165.8 234 121 1.623 53

THF (tetrahydrofurane) C4H8O 72.1 67 0.889 357

Toluene C7H8 92.2 427 111 0.867 77

Trichloroethylene C2HCl3 131.3 264 87 1.464 183

Water H2O 18.0 2261 100 1.000 72

Xylene (mixture) C8H10 106.2 389 25

0-xylene C8H10 106.2 144 0.880

m-xylene C8H10 106.2 139 0.864

p-xylene C8H10 106.2 138 0.861

Table 5: Solvent table (CRC Handbook 65th Ed)5.9 Troubleshooting

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BÜCHI Rotavapor R-200/205

5.9 Troubleshooting

Malfunction Possible cause Remedy

Apparatus does not work Main switch is off Turn mains switch on

Apparatus is not connected to the mains supply Check mains connections

Bath does not warm up Main switch is off Turn mains switch on

Apparatus is not connected to the mains supply Check mains connections

Over-temperature protection reacts Automatic reset after cooling

Internal fuse is defect (only 230V) Call customer service Servo lift without function Various causes Call customer service Flask does not rotate Rotary knob is set to 0 Turn rotary knob clockwise, until rotation

starts

Apparatus has been Turn rotary knob to ”0” and then turn it

switched on again clockwise, until rotation starts System is not tight Joints have not been greased Grease joints

Hose nipples have not be screwed Check hose nipples

correctly or they are defect

Tubes are untight (brittle) Replace tubes

Sealing system has been installed Check sealing system

incorrectly

Seal is defect Replace seals Frequent switching of valve or pump System is untight Control all sealing points

(tubes and their connections)

Hysteresis is too small Choose larger hysteresis

(if end vacuum is greater than 700 mbar, set to automatic hysteresis)

Valve does not switch Valve does not shut off • Valve is dirty

• Valve cable is not plugged in

Vacuum is not reached Back evaporation Rotavapor Drain receiving flask

Water pressure of water jet Open water tap completely

pump is too low Distillation has ”abated” Manually sink pressure until the distillation starts again Distillation has ended a) Back evaporation from the receiving flask is too strong (especially

despite not dried out completely solvent mixtures), drain receiving flask and start distillation again

b) Malfunction in distillation procedure is not exactly defined (for example,

sudden cooling, heat flow is too low, etc.)

Display E1 Actual temperature was >3°C above AUTO RESET after cooling off, upon

the target value when heating was second occurrence; Call customer service

turned on

Table 6: Troubleshooting

5 Operation

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BÜCHI Rotavapor R-200/205

6 Maintenance

You must observe all instructions, aimed at keeping the Rotavapor functional. This includes periodically cleaning and checking for damages.

Before carrying out maintenance work on the apparatus, make sure that vapour supply and current supply have been turned off. When repair work is done to the lower part of the bath, always support the bath.

6.1 Cleaning

Housing

Use a moist cloth to clean the housing. Never use solvents as cleaning agents. Check the housing for defects (controls, plugs).

Tube connections

Visually examine tube connections. Tears, brittleness are to be corrected by replacing with suitable new tubes.

Sealing system

Visually check seal KD-34 and if it is strongly worn, replace it with a new seal.

• Do not grease seal (abrasion and fat have abrasive effect).

• Cleaning by rinsing and drying with a soft cloth prolongs the service life of seals. This also helps to keep solvents from getting into the unit.

• Clean seals and glass components regularly, especially after boiling delays and/or work with crystalline products.

Disassembling:

• Completely loosen screwed connection ! on the evaporation side. Press the knob on the lower side of the drive to block the screwed connection. Remove flange adapter " and black screwed connection !.

• Remove flange seal # and steam tube $ via the evaporator side.

• Completely loosen screwed connection % on the conden- ser side. Hold and secure condenser when you do this.

• Remove seal & and clean it.

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BÜCHI Rotavapor R-200/205

6 Maintenance

Assembling:

• Insert seal & on the condenser side.

• Place flange seal # onto steam tube $ and insert via the evaporator side.

• Tightly screw flange adapter " with screwed connection ! onto the evaporator side. Press the button on the bottom of the drive to block the screwed connection.

• Fasten condenser with screwed connection % onto drive.

Heating Bath

The heating bath does not require any maintenance. You should clean it occasionally. It should be cleaned, if:

• The water bath is calcified or contaminated

• The oil in the oil bath has changed (colour, viscosity, polymerises) or is contaminated.

Remove the bath to clean it.

Minor furring can be removed with non-abrasive cleaning agents (for example bathroom cleaners). If calcification is persistent, you can use acetic acid to remove it. Then, you must thoroughly rinse the bath.

Clean the housing with a moisten cloth, without using solvents. Visually inspect the housing for defects (controls, plug).

Glass components

Rinse glass components with commercial cleaners (for example mild soap solution). Use suitable cleaning material (you may have to allow it to act for awhile) to remove dirt adhering in the condenser coil (for example algae). Remove grease from joints. After you have cleaned and completely dried each glass component, visually inspect each glass component for glass splinters or tears. Since glass components are under vacuum when the rotary evaporator is operating, you must carefully visually control them!

Picture 27: Explosion illustration of sealing system with drive

% & $

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BÜCHI Rotavapor R-200/205

6 Maintenance

6.3 Functional test

The unit is to be assembled from dry, solvent-free glass components.

Vacuum tightness

The apparatus is evacuated while flask is rotating. If there is a pressure measuring device, it is determined whether the vacuum remains constant in the system. For this purpose, the vacuum tube between the vacuum source and the pressure measuring device is interrupted by careful bending. Pressure increase per minute should be less than 3 mbar.

Setting capability of rotation speed

The regulator for rotation speed is slowly turned from the minimum setting to the maximum catch (clockwise). The motor is to turn without interruption in each position of the regulator.

6.4 Customer service

Only authorised service personnel can perform work on or in the apparatus. These persons have a comprehensive technical training and knowledge about hazards, resulting when safety stipulations are not complied with. BÜCHI Customer Service Office have apparatus specific Service Manual, which can only be obtained by authorised personnel.

Addresses of official BÜCHI Customer Service Offices are given on the last page of these operating instructions. If your apparatus malfunctions or you have technical questions or application problems, contact one of these offices.

BÜCHI Customer Service offers the following services:

• Spare parts

• Repairs

• Maintenance

• Technical advise

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BÜCHI Rotavapor R-200/205

7 Taking out of operation

You must remove dangerous substances and thoroughly clean the apparatus. As a result, people will not be injured from contact with dangerous substances.

7.1 Storage/transportation

Clean the apparatus thoroughly. Residues of chemicals must be removed completely and glass components must be cleaned. Keep and transport the apparatus in its original packaging.

7.2 Disposal

So that the apparatus can be disposed of in an environmentally friendly manner, there is alist of materials used in Chapter 9, Annex. This helps to ensure that the components are separated and recycled.

Please observe valid regional and local laws concerning disposal.

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BÜCHI Rotavapor R-200/205

8 Spare parts and accessories

Picture 28a: Rod and holder

8 Spare parts and accessories

40608

40607

Picture 28 b : Glass assembly with Deflector ring

Only BÜCHI original accessories and spare parts guarantee safety and that the apparatus functions correctly. You can only use spare parts and accessories from other companies if BÜCHI consents. During assembling and disassembling the general safety rules and Chapter 6 are to be respected. Before placing the apparatus into operation, check to make sure that it operates correctly according to Chapter 6.2. Manufacturing according to this Manual is prohibited.

8.1 Condenser fixation

Name Order number

Rod 40607 Holder 40608

Table 7a: Condenser fixation

Set 4 Tube nipples straight 37642 Set 4 Tube nipples bent 37287 Set Tube nipples 4 straight / 2 bent 38000

Table 7b: Tube nipples

8.2 Deflector ring for Condenser / Coldtrap

In a warm environment condensation can form on the outside of the Condenser or Coldtrap. To prevent condensation collecting behind the plastic screw coupling the Deflector ring should be fitted as illustrated.

Name Order number

Set of 5 Deflector rings 40822

Table 7c: Deflector rings

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BÜCHI Rotavapor R-200/205

Picture 29: Explosion illustration glass assembly A

8 Spare parts and accessories

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BÜCHI Rotavapor R-200/205

8.3 Glass assembly A

Name Order number

PTFE tube 460 mm 00643 Clip for receiving flask 03275 Screw cap GL-10 23875 O ring 3 x 2,7 mm 23900 PTFE tube, 600 mm 28096 Tube nipple GL-14, bend, cpl, 4 units 37287 Seal complete (with steam tube, seal 40010

condenser side, Teflon ring evaporator side) Set flange screwed connection 40133 Joint adapter with combi-clip, 40615

NS 29.2/32, complete PTFE drain disk 40625 Stop cocks NS 18.8/38 40627 Glass assembly A complete with 1 l 40630

receiving flask (03275 + 40627 + 00643 + 40625 + 28096 + 40631)

Diagonal condenser A (23875 + 23900 + 40631 Tube nipple GL-14 compl.)

PLASTIC + GLAS (PLG)

Glass assembly A complete, PLG with 1 l 40632 coated receiving flask (40633 + 03275 + 40627 + 00643 + 40625 + 28096)

Diagonal condenser A PLG (23875 + 40633 23900 + Tube nipple GL-14 compl.)

Table 8: Spare parts glass assembly A

8 Spare parts and accessories

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BÜCHI Rotavapor R-200/205

8 Spare parts and accessories

Picture 30: Explosion illustration glass assembly V

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BÜCHI Rotavapor R-200/205

8.4 Glass assembly V

Name Order number

PTFE tube 300 mm 00646 Clip for receiving flask 03275 Screw cap GL-10 23875 O ring 3 x 2,7 mm 23900 Screw cap GL-14 25435 PTFE tube, 600 mm 28096 Tube nipple GL-14, bend, cpl., 4 units 37287 Seal complete (with steam tube, seal 40010

condenser side, Teflon ring evaporator side) Set flange screwed connection 40133 Glass assembly V complete with 1 l 40600

receiving flask (40601 + 40604 + 03275 + 40627 + 00646 + 40625 + 28096)

V condenser (23875 + 23900 + 25435 + 40601 Tube nipple GL-14 compl.

Joint adapter with combi-clip, 40615 NS 29.2/32, complete

PTFE-disk (drain disk) 40625 Stop cocks NS 18.8/38 40627

PLASTIC + GLAS (PLG)

Glass assembly V complete, PLG with 1 l 40602 coated receiving flask (40603 + 03275 + 40627 + 40625 + 28096)

V condenser PLG (23875 + 23900 + 40603 25435 + Tube nipple GL-14 compl.)

Table 9: Spare parts glass assembly V

8 Spare parts and accessories

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BÜCHI Rotavapor R-200/205

8 Spare parts and accessories

Picture 31: Explosion illustration glass assembly C

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BÜCHI Rotavapor R-200/205

8 Spare parts and accessories

8.5 Glass assembly C

Name Order number

PTFE tube 300 mm 00646 Cold trap 00672 Clip for receiving flask 03275 Screw cap GL-10 23875 O ring 3 x 2,7 mm 23900 Seal PTFE/Viton complete 27462 Cap for cold trap 27479 PTFE tube, 600 mm 28096 Tube nipple GL-14, bend, cpl., 4 units 37287 Seal complete (with steam tube, seal 40010

condenser side, Teflon ring evaporator side) Set flange screwed connection 40133 Joint adapter with combi-clip, 40615

NS 29.2/32, complete Stop cocks NS 18.8/38 40627 Stop cocks NS 18.8/38 40628 Glass assembly C complete with 1 l 40640

receiving flasks (03275 + 00646 + 04625 + 40628 + 28090 + 40627 + 40645)

Cold trap outer part (incl. 23900 + 23875 + 40641 Tube nipple GL-14 compl.)

Cold trap complete (40641 + 23900 + 40645 23875 + 00672 + 27462 + 27479)

PLASTIC + GLAS (PLG)

Glass assembly C complete, PLG with 1 l 40642 coated receiving flask (40646 + 03275 + 00646 + 40625 + 40628 + 28096)

Cold trap outer part PLG (incl. 23900 + 40643 23875 + Tube nipple GL-14 compl.)

Cold trap complete PLG 40646 (23900 + 27875 + 00672 + 27462 + 27479 + Tube nipple GL-14 compl.)

Table 10: Spare parts glass assembly C

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8 Spare parts and accessories

Picture 32: Explosion illustration glass assembly S

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BÜCHI Rotavapor R-200/205

8 Spare parts and accessories

8.6 Glass assembly S

Name Order number

condenser side, Teflon ring evaporator side) Set flanged screwed connection 40133 Joint adapter with combi-clip, 40615

NS 29.2/32, complete PTFE disk (drain disk) 40625 Shut-off tap 40626 Stop cocks NS 18.8/38 40627 Glass assembly S complete with 1l receiving 40650

flasks without vacuum connector 1006 (40651 + 40657 + 40626 + 03275 + 40627 + 40625 + 28096)

Vertical condenser S, including 40651 Tube nipple GL-14 complete

Distribution head including 23900 + 23875 40657

PLASTIC + GLAS (PLG)

Glass assembly S complete, PLG with 1 l 40652 coated receiving flask (40653 + 40658 + 40626)

Vertical condenser S PLG 40653 (25435 + Tube nipple GL-14 compl)

Distribution head PLG incl. 23900 + 23875 40658

Table 11: Spare parts glass assembly S

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BÜCHI Rotavapor R-200/205

8 Spare parts and accessories

Picture 33: Explosion illustration glass assembly E

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BÜCHI Rotavapor R-200/205

8 Spare parts and accessories

8.7 Glass assembly E

Name Order number

PTFE tube 300 mm 00646 Expansion vessels (including 25435) 01002 U tube (including 25435) 01003 Vacuum connector 01004

(including Tube nipple GL-14, complete) Clip for receiving flask 03275 Condenser (incl. Tube nipple GL-14 compl.) 10183 Condenser pivoting clamp 11151 Screw cap GL-10 23875 O ring 3 x 2,7 mm 23900 Screw cap GL-14 25435 Cross sleeve 27344 PFTE tube, 600 mm 28096 Tube nipple GL-14, bend, cpl., 4 units 37287 Seal complete (with steam tube, seal 40010

condenser side, Teflon ring evaporator side) Set flange screwed connection 40133 Rod 40609 Joint adapter with combi clip, 40615

NS 29.2/32, complete PTFE disk (drain disk) 40625 Stop cocks NS 18.8/38 40627 Glass assembly E complete with 40660

1 l receiving flask (10183 + 01003 + 01002 + 40661 + 01004 + 03275 + 40627 + 00646 + 40625 + 28096)

Distribution head (including 23875 + 23900) 40661

PLASTIC + GLAS (PLG)

Expansion vessel PLG (incl. 25435) 33507 U tube PLG (including 25435) 33508 Condenser PLG 33511

(including Tube nipple GL-14 complete) Glass assembly E complete, PLG with 1 l 40662

coated receiving flask (33511 + 33508 + 33507 + 40663 + 01004)

Distribution head PLG 40663 (including 23875 +23900)

Table 12: spare part glass assembly E

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BÜCHI Rotavapor R-200/205

8 Spare parts and accessories

Picture 34: Explosion illustration glass assembly CR

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BÜCHI Rotavapor R-200/205

8 Spare parts and accessories

8.8 Glass assembly CR

Name Order number

PTFE tube 300 mm 00646 Cold trap 00672 Vacuum connection incl. cock (optional) 01006 Clip for receiving flask 03275 Cold trap CR outer part 11228

(including Tube nipple GL-14 compl.) Cold trap CR complete (00672 + 40628 + 11511

11228 + 27462 + 27479 + Tube nipple GL-14 compl.)

Screw cap GL –10 23875 O ring 3 x 2,7 mm 23900 Seal PTFE/Viton complete 27462 Cap for cold trap 27479 PTFE tube, 600 mm 28096 Tube nipple GL-14, bend, cpl., 4 units 37287 Seal complete (with steam tube, seal con- 40010

denser side, Teflon ring evaporator side) Set flange screwed connection 40133 Joint adapter with combi-clip, 40615

NS 29.2/32, complete PTFE disk (drain disk) 40625 Shut-off valve 40626 Stop cocks NS 18.8/38 40627 Stop cocks NS 18.8/38 40628 Distribution head (iincl. 23900 + 23875) 40657 Glass assembly CR complete with 1 l 40670

receiving flask without 1006 (11228 + 00672 + 40657 + 40626 + 27462 + 27479 + 03275 + 40627 + 40628 + 00646 + 40625 + 28096)

PLASTIC + GLAS (PLG)

Cold trap CR outer part PLG (including Tube nipple GL-14 compl.) 25614

Cold trap complete (00672+40628+25614+ 33478 27462+27479+Tube nipple GL-14 compl.)

Distribution head PLG (incl. 23875 + 23900) 40658 Glass assembly CR complete, PLG with 1 l 40672

coated receiving flask (25614 + 00672 + 40658 + 40626 + 27462 + 27479 + 03275 + 40627 + 40628 + 00646 + 40625 + 28096)

Table 13: Spare parts glass assembly CR

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BÜCHI Rotavapor R-200/205

8.9 Various glass parts

Name Order number

Sealing system

Joint adapter, complete with combi-clip 40615 To 29.2/32 joint

Joint adapter, complete with combi-clip 40616 To 24/40 joint

Joint adapter, complete with combi-clip 40617 To 29.2/42 Joint

Joint adapter, complete with combi-clip 40618 To 34.5/35 Joint

Vapour duct 40610 Set adapter seal, complete (2 units) 40030 Seal KD 34, complete 40016

8 Spare parts and accessories

Name Order number

Combi-Clip

Standard joint SJ 29,2/32 40620 SJ 29,2/42 40620 SJ 24/40 40620

Picture 35: Sealing system and joint adapter

Picture 36: Combi-clip

40016

40610

40030

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BÜCHI Rotavapor R-200/205

8 Spare parts and accessories

Picture 37: Evaporating flask

Standard joint evaporating flask (pear-shaped) Content SJ 29.2/32 SJ 24/40 SJ 29.2/42

50 ml 00431 08750 08736 100 ml 00432 08751 08737 250 ml 00433 08754 08738 500 ml 00434 08758 08739 1000 ml 00435 00440 08762 2000 ml 00436 08765 08769 3000 ml 00437 08767 08770

SJ Evaporating flask (pear-shaped) PLASTIC+GLAS Content SJ 29.2/32 SJ 24/40 SJ 29.2/42

50 ml 33405 100 ml 33404 250 ml 25520 500 ml 25322 25261 1000 ml 20729 20730 25517 2000 ml 25323 25262 3000 ml 25324 25263 27346

The use of the plastic + glass coating is according to manufacturers' instructions in water up to 60° possible.

The cleaning of the glass parts should be done by hand.

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BÜCHI Rotavapor R-200/205

8 Spare parts and accessories

Picture 38: Drying flask

Picture 39: Receiving flask

SJ Drying flask (pear-shaped) Content SJ 29.2/32 SJ 24/40

500 ml 00452 11579 1000 ml 00453 00420 2000 ml 00454 11580

The use of the plastic + glass coating is according to manufacturers' instructions in water up to 60° possible.

The cleaning of the glass parts should be done by hand.

Receiving flask (with ball joint 35/20) Content uncoated Plastic+Glas Plastic+Glas

Low temperature*

50 ml 00421 100 ml 00422 250 ml 00423 500 ml 00424 25264 40774 1000 ml 00425 20728 40775 2000 ml 00426 25265 40776 3000 ml 00427 25266 40777

* For the use with BÜCHI Cold Trap

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8 Spare parts and accessories

Picture 40: Flanged evaporating flask

Picture 41: Flanged drying flask

Picture 42: Distillation spider

Name Order number

Flanged evaporating flask

100 ml 40675 250 ml 40676 500 ml 40677 1000 ml 40678 2000 ml 40679 3000 ml 40680

Flanged drying flask

500 ml 40682 1000 ml 40683 2000 ml 40684

Distillation spider

For simultaneous distillation from 5 evaporating flasks

Content

Complete with flask for SJ 29.2/32 50 ml 01332 100 ml 01333

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BÜCHI Rotavapor R-200/205

Name Order number

Distillation spider

For simultaneous distillation from 20 ml cylinder flask with SJ 14.5/23

Number of flasks SJ 29.2/32

6 01334 12 01335 20 01336 20 ml evaporating flask to spider 00477

8 Spare parts and accessories

Picture 43: Distillation spider 20 ml

Beaker flask

For working with high viscosity and solid substances. The large opening allows for smooth draining and cleaning. Foaming solutions can be better processed in a beaker flask.

Beaker Drying

1,5l Version flask cpl. flask cpl.

With flange 40696 40697 SJ 29,2/32 34230 34269 SJ 24/40 34247 34770

Beaker Drying

0,5l Version flask cpl. flask cpl.

With flange 40692 40693 SJ 29,2/32 34764 34767 SJ 24/40 34765 34768

Filled volume

1,5 l Version = 500 ml 0,5 l Version = 150 ml

Picture 44: Beaker flask

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BÜCHI Rotavapor R-200/205

8 Spare parts and accessories

Picture 45: Reitmeyer trap

Picture 46: Soxhlet extraction unit

Name Order number

Reitmeyer trap

For slightly foaming solutions Flange with NS 29.2/32 40667 Flange with NS 24/40 40668

11585 11388

00982

11705

Extraction unit “Soxhlet”

When this accessory is combined with glass assembly S, extractions can be performed. This extraction unit can be obtained for 200 ml or 500 ml.

Extraction unit complete 200 ml (40699+ 11744 11705+11585+11904+19051+00982+08560)

Extraction unit complete 500 ml (40699+ 11745 11705+11388+11904+19051+00982+00989)

Reducing unit 11705 For 200 and 500 ml version

Extraction unit lower part 200 ml 11585 Extraction unit lower part 500 ml 11388 Rod 12 x 750 mm (R-114 - 144) 11904 Rod 1000 mm (R-200/5) 40699 Cross sleeve cpl. 27344 Condenser clamp 11151 PTFE O ring 19051 Complete screwed connection 00982 1 x extraction thimbles for 200 ml 08560 1 x extraction thimbles for 500 ml 00989 25 x extraction thimbles for 200 ml 18106

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BÜCHI Rotavapor R-200/205

Picture 48: Woulff bottle

Woulff bottle

The Woulff bottle acts as volume buffer between pump and rotary evaporator. It protects the pump against contamination and thus increases its service life.

Woulff bottle, complete 25519 (25518+32885)

Woulff bottle 25518 Tube nipple GL-14, bend, cpl.. 4 units 37287

Picture 47: Floating balls in waterbath

8 Spare parts and accessories

8.10 Miscellaneous

Name Order number

Floating balls

The floating balls on the water surface behave like a cover. As a result, energy consumption is reduced.

250 pieces 36405

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BÜCHI Rotavapor R-200/205

Name Order number

Water jet pump plastic

Water jet pump 02913

8 Spare parts and accessories

Water control valve ½”

Water control valve ½ ” complete 11606

Picture 50: Water control valve

Vacuum gauge unit

Vacuum gauge 18826 Y piece ø 10 mm 00394

Picture 51: Vacuum gauge unit

Picture 49: Water jet pump

00394

18826

11606

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BÜCHI Rotavapor R-200/205

04133

07622

Name Order number

Tubes

Vacuum tube 16/6 mm 17622 Nyflex tube 14 x 8

(Alternative to vacuum tube 17622)) 04113 Cooling water tube silicone 9/6 mm 04133

Picture 52: Illustration tube

Picture 54: Illustration of protective shield

Picture 55: Photograph of valve unit

Valve unit

This valve unit with integrated separator is a necessary accessory, if vacuum is controlled with a vacuum controller. It interrupts the connection between the pump and rotary evaporator and protects the pump against contamination.

Valve unit, complete 37968

8 Spare parts and accessories

Glisseal laboratory grease 60 g tube 01330

Protective shield

Protective shield, complete 40440

Picture 53: Illustration of glisseal laboratory grease

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BÜCHI Rotavapor R-200/205

9 Appendix

9.1 Technical Data

R-200 R-205 B-490

Type of apparatus Rotavapor Basic Rotavapor with display Heating bath Glass assembly A,V,C,S,E,CR A,V,C,S,E,CR Dimensions (wxhxd) 544 x 697 x 367 544 x 697 x 367 280 x 191 x 250 Weight 16 - 18 kg 16 - 18 kg 3.3 kg

Depending on Depending on

glass assembly glass assembly Supply voltage 100, 120, 230 V +/-10 % 100, 120, 230 V +/-10 % 100, 120, 230 V +/-10 % Mains connection 3-pole (P,N,E) via power cable 3-pole (P,N,E) via power cable 3-pole (P,N,E) via power cable Frequency 50/60 Hz 50/60 Hz 50/60 Hz Power consumption 120W 120W 1400W Installation / II II II

overvoltage category IP class Contamination degree 2 2 2 Rotation speed range 20-280 rpm 20-280 rpm Maximum size of flask 3 It (max. 3 kg) 3 It (max. 3 kg) 3 It (max. 3 kg) Temperature range 20 °C – 180° C Display None Vapour temp./rotation Set/Actual temp. Accuracy of measured

Temperature 20 °C to 100 °C 20 °C to 100 °C ± 1°C

100°C to 180°C 100°C to 180°C ± 2°C Environmental temperature 10°C up to 35°C 10°C up to 35°C 10°C up to 35°C Environmental conditions for indoor use only, maximum relativ humidity 80% for temperatures up to 30°C Maximum height 2000 m above sea level 2000 m above sea level 2000 m above sea level Bath content 4 lt Over-temperature protection 250° C Pressure of the max. 2 bar abs. max. 2 bar abs.

condensing coil pulsation free pulsation free

Table 14: Technical Data

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9.2 Materials used

Component Material / Name Abbreviation

Quick-action jack Aluminium cast alloy AlMg 9 Electronics housing Aluminium cast alloy AlMg 9 Bottom plate Aluminium cast alloy AlMg 9 Bath insulation Plastic PBT 30 GF Bath coating Polytetrafluor ethylene PFA Bath construction Aluminium cast alloy AlMg 9 Bad lower part Aluminium cast alloy AlMg 9 Seal KD-34 Polytetrafluor ethylene PTFE Flange seal Ethylene tetrafluor ethylene ETFE

Table 15: Materials used

9.3 FCC requirements (for USA and Canada)

English:

This equipment has been tested and found to comply with the limits for a Class A digital device, pusuant to both Part 15 of the FCC Rules and the radio interference regulations of the Canadian Department of Communications. These limits are designed to provide reasonable protection against harmful interference when the equipment is operated in a commercial environment.

This equipment generates, uses and can radiate radio frequency energy and, if not installed and used in accordance with the instruction manual, may cause harmful interference to radio communications. Operation of this equipment in a residential area is like to cause harmful interference in which case the user will be required to correct the interference at his own expense.

Français:

Cet appareil a été testé et s'est avéré conforme aux limites prévues pour les appareils numériques de classe A et à la partie 15 des règlementation FCC à la règlementation des radio-interférences du Canadian Department of communications. Ces limites sont destinées à fournir une protection odéquate contre les interférences nétastes lorsque l'appareil est utilisé dans un environnement commercial.

Cet appareil génère, utilise et peut radier une énergie à fréquence radioélectrique, il est en outre susceprible d'engendrer des interferences avec les communications radio, s'il n'est pas installé et utilisé conformément aux instructions du mode d'emploi. L'utilisation de cet appareil dans les zones résidentielles peut causer des interférences nèfastes, auquel cas l'exploitant sera amené à prendre les dispositions utiles pour polier aux interférences à ses propres frais.

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9.4 Declaration of conformity

BÜCHI Labortechnik AG Postfach, CH-9230 Flawil, Switzerland

Declare, solely under our responsibility, that the product:

BÜCHI Rotavapor R-200/R-205

On which this declaration is based, complies with the following standards:

EN 61010-1:1993 (~ IEC 1010-1, VDE 0411-1) Safety specifications for electrical measurement, control and laboratory equipment: General requirements

EN 61326-1: 1997 Electrical equipment for measurement technique, control and laboratory use

-EMC requirements EN 55011:1991/B (~ VDE 0875/B, VDE 0871/B)

Limit values and measuring methods for interference of industrial, scientific and medical high frequency instruments

EN 61000-3-2: 1995/1996 Limits for harmonic current emissions EN 61000-3-3: 1995 Limitation of voltage fluctuations and flicker

Canadian Radio Interference Regulations ICES-001 Notice for Industrial, Scientific and Medical Radio Frequency Generators: This ISM apparatus meets all requirements of the Canadian Interference-Causing Equipment Regulations. Please note that this requirement is only for generators which operate at over 10,000 Hz.

In accordance with specifications of the EU Directive:

73/23/EEC (Electrical equipment/low voltage directive) 89/336/EEC (Electromagnetic compatibility)

Flawil, 16.08.2001

BÜCHI Labortechnik AG Meierseggstrasse 40 9230 Flawil Schweiz

Tel +41 (0)71 394 63 63 Guido Worch Fax +41 (0)71 394 65 65 Qualitymanager buchi@buchi.com www.buchi.com

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