BUCHI R-220 SE User Manual

Operation Manual

Rotavapor® R-220 SE

11593356 en

Table of contents

Table of contents

1	About this manual . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .		.	. 7
2	Safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .		.	. 8
	2.1	User qualification . . . . . . . . . . . . . . . . . . . . . . .	.	8
	2.2	Proper use . . . . . . . . . . . . . . . . . . . . . . . . .	.	8
	2.3	Improper use . . . . . . . . . . . . . . . . . . . . . . . .	.	8
	2.4	Safety warnings and safety signals used in this manual . . . . . . . . . .	.	9
	2.5	Product safety		12
	2.5.1	General hazards		12
	2.5.2	Warning labels on housing . . . . . . . . . . . . . . . . . . . .		13
	2.5.3	Personal safety measures		14
	2.5.4	Built-in safety elements and measures . . . . . . . . . . . . . . . .		14
	2.6	General safety rules . . . . . . . . . . . . . . . . . . . . . .	.	15
3	Technical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . .		.	.16. . . .
	3.1	Available system configurations and dimensions . . . . . . . . . . . .	.	16
	3.1.1	Application areas . . . . . . . . . . . . . . . . . . . . . . .	. 17
	3.1.2	Typical example applications and accessories		17
	3.2	Technical data		18
	3.3	Materials used		20
4	Description of function . . . . . . . . . . . . . . . . . . . . . . . . . .			. 21. . . . .
	4.1	Functional principle of a Rotavapor evaporation		21
	4.2	Rotavapor front-side . . . . . . . . . . . . . . . . . . . . . .		23
	4.3	Tubing scheme . . . . . . . . . . . . . . . . . . . . . . . .		24
	4.3.1	Cooling water routing . . . . . . . . . . . . . . . . . . . . . .		26
	4.3.2	Vaccum routing . . . . . . . . . . . . . . . . . . . . . . . .		27
	4.4	User interface front-side		29
	4.5	Connection field at the rear-side		30
5	Putting into operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .		.	33
	5.1	Installation site		33
	5.2	Electrical connections		34
	5.3	Sensor setup and adjustments . . . . . . . . . . . . . . . . . .	.	35
	5.3.1	Level sensors . . . . . . . . . . . . . . . . . . . . . . . .	.	36
	5.3.2	Cooling water flow sensor		37
	5.3.3	Foam sensor . . . . . . . . . . . . . . . . . . . . . . . .	.	38
	5.3.4	Vapor temperature sensor		40
	5.3.5	Cooling water temperature sensor		41
	5.4	Battery driven lift function at power failure		41
	5.5	Setting up the support rod(s) . . . . . . . . . . . . . . . . . . .	. 42
	5.6	Condenser clamps . . . . . . . . . . . . . . . . . . . . . .	.	43
	5.7	EasyClamps		44
	5.8	Inlet valve . . . . . . . . . . . . . . . . . . . . . . . . . .		45
	5.9	Glassware and configurations		46

5.10Additional cleaning measures for food, pharma and cosmetic applications . . . . 46

5.10.1	Primary cleaning	46
5.10.2	Example for a disinfection via an evaporation cycle . . . . . . . . . . . .	47
5.11	Verification of the disinfection process	47
5.11.1	Controlled contamination and distillation	48

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Table of contents

5.11.2	Disinfection . . . . . . . . . . . . . .	. . . . . .	. . . .	.	. 48
5.11.3	Sampling for determination of the germ count				48
5.11.4	Final cleaning and drying . . . . . . . . .	. . . . . .	. . . . .	.	48
5.12	General installation instructions for glassware . .	. . . . . .	. . . . .	.	49
5.13	Single receiver				51
5.14	Heating bath filling level . . . . . . . . . .	. . . . . .	. . . .	.	. 55

5.15Heating bath setup for 2×1800 W heating element . . . . . . . . . . . . 56

	5.15.1	Water as heating transfer medium		58
	5.15.2	Heating transfer media with high boiling point . . . . . . . . . . . . . . . . . .	. . .	59
	5.16	Heating bath setup for 4.2 and 6.3 kW heating element		60
	5.17	Attaching and removing evaporating flasks . . . . . . . . . . . . .	. .	62
	5.18	Adjusting the snap flange . . . . . . . . . . . . . . . . . . .	. .	64
	5.19	Installation and usage of a shut-off tap . . . . . . . . . . . . . .	. .	65
	5.20	Vacuum controller installation / removal . . . . . . . . . . . . . .	. .	66
	5.21	Controller upgrade . . . . . . . . . . . . . . . . . . . . .	. .	67
	5.22	Final installation check		67
6	Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . .		. .	. 68. . . . .
	6.1	Evaporation in three steps		68
	6.2	Optimal distillation conditions . . . . . . . . . . . . . . . . . .	.	. 69
	6.3	Solvent table . . . . . . . . . . . . . . . . . . . . . . .	. .	70
7	Maintenance and repairs . . . . . . . . . . . . . . . . . . . . . . .		. .	. 71. . . . .
	7.1	Customer service . . . . . . . . . . . . . . . . . . . . . .	.	. 71
	7.2	Regular service and checks . . . . . . . . . . . . . . . . . .	. .	72
	7.2.1	System tightness . . . . . . . . . . . . . . . . . . . . . .	.	. 72
	7.2.2	Sealings and hoses . . . . . . . . . . . . . . . . . . . . .	. .	72
	7.2.3	Glassware and clamps . . . . . . . . . . . . . . . . . . . .	.	. 72
	7.2.4	Housing, heating bath, cables and accessories . . . . . . . . . . . .	.	. 72
	7.3	Snap flange coupling, flask seal and vapor duct		74
	7.4	Distribution head seal and vacuum seal . . . . . . . . . . . . . .	. .	77
8	Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . .		. .	. 79. . . . .
	8.1	Resetting the over-temperature protection		79
	8.2	Error messages and their remedy . . . . . . . . . . . . . . . .	. .	80
	8.3	Resettable automatic system fuses . . . . . . . . . . . . . . . .	.	. 84
9	Shutdown, storage, transport and disposal . . . . . . . . . . . . . . . . . . . . .		. . .	85
	9.1	Storage and transport		85
	9.2	Disposal		86
	9.2.1	Lead-acid battery . . . . . . . . . . . . . . . . . . . . . .	.	. 86
10	Spare	parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	. . .	88
	10.1	Reflux glass configurations . . . . . . . . . . . . . . . . . .	. .	89
	10.1.1	'R' configuration		90
	10.1.2	'RB' configuration		91
	10.1.3	'C' configuration		92
	10.1.4	'BASIC' configuration . . . . . . . . . . . . . . . . . . . .	. .	93
	10.2	Decending glass configurations . . . . . . . . . . . . . . . . .	. .	94
	10.2.1	'D' configuration		95
	10.2.2	'D2 HP' configuration . . . . . . . . . . . . . . . . . . . .	. .	96
	10.2.3	'D2' configuration . . . . . . . . . . . . . . . . . . . . . .	.	. 97
	10.2.4	'DB' configuration		98
	10.2.5	'DB2' configuration . . . . . . . . . . . . . . . . . . . . .	. .	99
	10.3	Receiving vessel parts		100

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Table of contents

10.5	Optional equipment and upgrade parts . . . . .	. . . . . .	. . . .		. 105
11 Declarations and requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .					.106
11.1	FCC requirements (for USA and Canada) . . . .	. . . . . .	. . . .	.	106
11.2	Declaration of conformity . . . . . . . . . .	. . . . . .	. . . .		.107

5	R-220 SE Operation Manual, Version F

1  About this manual

1 About this manual

This manual describes the Rotavapor R-220 SE and provides all information required for its safe operation and to maintain it in good working order.

It is addressed to laboratory personnel and operators in particular.

Read this manual carefully before installing and running your system and note the safety precautions in chapter 2 in particular. Store the manual in the immediate vicinity of the instrument, so that it can be consulted at any time.

No technical modifications may be made to the instrument without the prior written agreement of BUCHI. Unauthorized modifications may affect the system safety or result in accidents. Technical data are subject to change without notice.

NOTE

The symbols pertaining to safety (WARNINGS and ATTENTIONS) are explained in chapter 2.

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.

The following product names and any registered and unregistered trademarks mentioned in this manual are used for identification purposes only and remain the exclusive property of their respective owners:

• Rotavapor® is a registered trademark of BÜCHI Labortechnik AG

The English manual is the original language version and serves as basis for all translations into other languages. If you need another language version of this manual, you can download available versions at www.buchi.com.

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2  Safety

2 Safety

This chapter highlights out the safety concept of the instrument and contains general rules of behavior and warnings from direct and indirect hazards concerning the use of the product. For the users' safety, all safety instructions and safety messages in the individual chapters shall

be strictly observed and followed. Therefore, the manual must always be available to all persons performing the tasks described herein.

2..1 User qualification

The instrument may only be used by laboratory personnel and other persons who on account of training and professional experience know of the potential dangers that can develop when operating the instrument.

Untrained personnel, or persons who are currently being trained, require careful supervision by a qualified person. The present Operation Manual serves as a basis for training.

2..2 Proper use

The rotary evaporator has been designed for use in technical laboratories and in production. It is authorized for use in applications that work with the evaporation and condensation of solvents.

•Evaporation of solvents and suspensions

•Synthesis and cleaning of refined chemicals

•Reactions under reflux

•Recycling and concentration of solvents

•Re-crystallization

•Drying of powders and granulates

2..3 Improper use

Applications not mentioned in section 2.2 are considered to be improper. Applications which do not comply with the technical data (see section 3 of this manual) are also considered to be improper.

The operator bears the sole risk for any damages or hazards caused by improper use!

The following uses are expressly forbidden:

•Use of the instrument in explosive environments

•The production and processing of materials that can cause spontaneous reactions (e.g. explosives; metal hydrids or solvents that can form peroxides)

•Processing with explosive gas mixtures

•Working without the evaporating flask being immersed in the water bath (risk of breakage)

•The drying of hard, brittle materials (e.g., stones, soil samples) that might cause damage to the receiving flask

•Shock-cooling of the evaporating flask and other glass parts

•Installation or use of the instrument in rooms, which require ex-protected instruments

•For safety reasons, only original spare parts must be used

•Using the flask handler installed on the heating bath to lift or lower an evaporating flask

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2  Safety

2..4 Safety warnings and safety signals used in this manual

DANGER, WARNING, CAUTION and NOTICE are standardized signal words for identifying levels of hazard seriousness of risks related to personal injury and property damage. All signal words, which are related to personal injury are accompanied by the general safety sign.

For your safety it is important to read and fully understand the below table with the different signal words and their definitions!

	Sign	Signal word	Definition	Risk level
		DANGER	Indicates a hazardous situation which, if not avoided, will result in
			death or serious injury.
		WARNING	Indicates a hazardous situation which, if not avoided, could result
			in death or serious injury.
		CAUTION	Indicates a hazardous situation which, if not avoided, may result
			in minor or moderate injury.
	no	NOTICE	Indicates possible property damage, but no
			practices related to personal injury.	(property damage only)

Supplementary safety information symbols may be placed in a rectangular panel on the left to the signal word and the supplementary text (see below example).

	Space for	!	SIGNAL WORD
		Supplementary text, describing the kind and level of hazard / risk seriousness.
	supplementary
	safety	• List of measures to avoid the herein described hazard or hazardous situation.
	information	• ...
	symbols.	• ...

Table of supplementary safety information symbols

The below reference list incorporates all safety information symbols used in this manual and their meaning.

Symbol Meaning

General warning

Electrical hazard

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2  Safety

Explosive gases, explosive environment

Harmful to life-forms

Hot item, hot surface

Device damage

Inhalation of substances

Explosive substances

Flammable substances

Fragile items / content

Warning, heavy item

Environmental pollution hazard

Do not dispose of in household trash

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2  Safety

Use of water is mandatory (non-standard symbol)

Wear protective mask

Wear laboratory coat

Wear protective goggles

Wear protective gloves

Heavy weight, lifting requires more than one person

Additional user information

Paragraphs starting with NOTE transport helpful information for working with the device / software or its supplementaries. NOTEs are not related to any kind of hazard or damage (see example below).

NOTE

Useful tips for the easy operation of the instrument / software.

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2  Safety

2..5 Product safety

Safety warnings in this manual (as described in section 2.4) serve to make the user alert and to avoid hazardous situations emanating from residual dangers by giving appropriate counter measures. However, risks to users, property and the environment can arise when the instrument is damaged, used carelessly or improperly.

2..5..1 General hazards

The following safety messages show hazards of general kind which may occur when handling the instrument. The user shall observe all listed counter measures in order to achieve and maintain the lowest possible level of hazard.

Additional warning messages can be found whenever actions and situations described in this manual are related to situational hazards.

! WARNING

Death or serious poisoning by inhalation of hazardous heating bath liquids.

•Do not inhale fumes from the heating bath

• Keep the heating bath temperature as low as reasonably practicable

• Obtain the material safety data sheets of all used liquids

•Wear appropriate personal protective equipment

•Do not use liquids of unknown composition

•Directly withdraw released fumes and gaseous substances by sufficient ventilation

•Only operate the instrument in ventilated environments

! WARNING

Death or serious injuries by formation of explosive atmospheres inside the instrument.

•Directly withdraw released fumes and gaseous substances by sufficient ventilation at filling

•Before operation, check all gas connections for correct installation

•Establish inert system atmosphere before processing substances that can form explosive or reactive gases or powders

•Check for proper earth connection to lead off electrostatic charges

! WARNING

Death or serious injuries by use in explosive environments.

•Do not operate the instrument in explosive environments

•Do not operate the instrument with explosive gas mixtures

•Directly withdraw released gases and gaseous substances by sufficient ventilation

! CAUTION

Risk of minor or moderate burns when handling hot parts.

•Do not touch hot parts or surfaces

•Drive down the heating bath after distillation

•Let the evaporating flask cool down for some minutes after use

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2  Safety

NOTICE

Risk of instrument short-circuits and damage by liquids.

•Do not spill liquids over the instrument or its component parts

•Wipe off any liquids instantly

•Ensure a safe positioning of the evaporating flask for storage

•Do not move the instrument when it is loaded with liquid

•Keep external vibrations away from the instrument

NOTICE

Risk of instrument damage by internal overpressure.

•External supply pressure must meet the system specifications

•Exchange clogged filters immediately

•Dispose of filter immediately

NOTICE

Risk of instrument damage by wrong mains supply.

•External mains supply must meet the voltage given on the type plate

•Check for sufficient grounding

NOTICE

Risk of glass breakage by excessive strains.

•Mount all glassware parts without strains

•Check glassware for proper fixing regularly and readjust fixing points if necessary

• Do not use defective glassware

2..5..2 Warning labels on housing

The following warning sticker(s) can be found on the housing or assemblies of the Rotavapor:

Symbol	Meaning	Location
	Hot item, hot surface	Sticker is located on top of the housing and at
		the racks
	Fill in H2O as heating medium only!	Sticker is located on top of the heating
		distributor box at the heating bath

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2  Safety

2..5..3 Personal safety measures

Always wear personal protective equipment such as protective eye goggles, protective clothing and gloves when working with the instrument. Wear inhalation protection when working with hazardous solvents and all kind of respirable material or material of unknown composition.

! WARNING

Death or serious poisoning by contact or incorporation of harmful media at use.

•Before operation, inspect seals, tubes and hoses for good condition

• Exchange worn out or defective parts immediately

• Before operation, check the instrument for correct assembly and proper seal

•Only operate the instrument in ventilated environments

•Directly withdraw released gases and gaseous substances by sufficient ventilation

•Wear safety goggles

•Wear safety gloves

•Wear a suitable protective mask

•Wear a laboratory coat

•Obtain all additional requirements listed in the supplementary data sheets of the media in use

2..5..4 Built-in safety elements and measures

Heating bath

•Overheating protection circuit

•Selectable max. temperature setpoint of the heating bath

•Dry-run protection against unsufficient heating liquid level

•Automatic temperature control of heater

•Automatic heating bath lowering via built-in, rechargeable battery in certain error situations

Electrostatic charges

• Internal grounding to lead-off electrostatic charges

Air / gas

•Automatic pressure relief when system pressure exceeds system specifications

•Automatic aeration in case of power interruption

Glass

•High temperature resistance and high transparency borosilicate glass

•Plastic+Glas coating as effective splinter protection in the event of an implosion (except evaporating flask)

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2  Safety

2..6 General safety rules

Responsibility of the operator

The head of the laboratory is responsible for training his/her personnel.

The operator shall inform the manufacturer without delay of any safety-related incidents which might occur during operation of the instrument. Legal regulations, such as local, state and federal laws applying to the instrument must be strictly followed.

Duty of maintenance and care

The operator is responsible for the proper condition of the instrument at use and that maintenance, service and repair jobs are performed with care and on schedule by authorized personnel only.

Spare parts to be used

Use only genuine consumables and spare parts for maintenance and repair to assure good system performance and to maintain the safety level. Any modifications to the spare parts used are only allowed with the prior written permission of the manufacturer.

Modifications

Modifications to the instrument are only permitted after prior consultation with and with the written approval of the manufacturer. Modifications and upgrades shall only be carried out by an authorized BUCHI technical engineer. The manufacturer will decline any claim resulting from unauthorized modifications.

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3  Technical data

3 Technical data

This chapter introduces the reader to the instrument and its specifications. It contains an overview of available glassware configurations, technical data, requirements and performance data.

3..1 Available system configurations and dimensions

max. 1200

max. 710

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3  Technical data

D	D2 HP	D2	DB2	DB	RB	R	C

180 cm

175 cm

163 cm

158 cm

150 cm

143 cm

3..1..1 Application areas

The Rotavapor R-220 SE is available in different setups to perfectly match all major evaporation tasks.

D	D2 HP	D2	DB2		DB		RB		R		C
	low-boiling / foam producing						high-boiling				extremely
											low-boiling
		minimal emissions						reflux reactions
				reduced total height

NOTE

In cooperation with our application specialists at BUCHI we also offer customized glassware solutions!

3..1..2 Typical example applications and accessories

Application		Glassware setup		Recommended accessories
Purification of ethanol		D
Concentration of foam		D		Foam sensor
producing materials
Gentle processing		D2 at low temperatures or		CW probe
of heat sensitive materials		C
Concentration of large volumes		All		Inlet valve
Recrystallization		R
Drying		R		Vapor duct with frit

NOTE

For large scale continous evaporation BUCHI offers the R-220 SE in continous version with a highly automated refill and product receiving process.

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3  Technical data

3..2	Technical data
		Technical data Rotavapor R-220 SE
		Electrical connection data, single phase
		Voltage	220 – 240 V ± 10% (1P, N, G)
		Frequency	50/60 Hz
		Max. power consumption	3800 W (with 2×1800 W heating elements)
		Overvoltage category	II
		Built-in mains supply socket, switched	220 – 240 VAC, 50/60 Hz, 2 A
		Electrical connection data, three phase
		Voltage	400 V ±10% (3P, N, G)
		Frequency	50/60 Hz
		Max. power consumption	3800 W or 4400 W (with 2×2100 W heating elements)
			6500 W with 6,3 kW heating (with 3x2100 W heating elements)
		Overvoltage category	II
		Built-in mains supply socket, switched	220 – 240 VAC, 50/60 Hz, 2 A
		Electrical connection data, Japan version
		Voltage	200 V ± 10% (1P, N, G)
		Frequency	50/60 Hz
		Max. power consumption	3800 W (with 2×1800 W heating element)
		Overvoltage category	II
		Built-in mains supply socket, switched	220 – 240 VAC, 50/60 Hz, 2 A

Environmental conditions

Pollution degree Temperature

Altitude (above sea level) Humidity (curve parameter)

2 (for indoor use only)

5 – 40  °C up to 2000 m

Maximum relative humidity 80% up to 31  °C, then decreasing linearly to 50% relative humidity at 40  °C

Dimensions and weight

Height	1430 mm – 1800 mm, depending on glass assembly
Width	1200 mm
Depth	710 mm max., depending on glass assembly
Bath diameter (inner)	430 mm
Weight	Approx. 70 kg without glass
Display
Bath temperature	(1  °C steps)
Cooling water temperature (optional)	(1  °C steps)
Vapor temperature	(1  °C steps)
Setting for the rotational speed	(1 rpm steps)
Setting for the bath temperature	(1  °C steps)
Actual vacuum	(1 mbar steps)
Setting for the vacuum	(1 mbar steps)
Cooling
Cooling water flow rate	120–200 liters/hour (variable)
Limitations	Max. 2.7 bar absolute pulse-free

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3  Technical data

Technical data Rotavapor R-220 SE

Heating bath

Heating medium	Depending on heating wattage
	3600 W (water or other dedicated heating transfer media)
	4200 W (water only!)
	6300 W (water only!)
Bath capacity	20 l, without flask immersed
Distillation capacity (ethanol)	Up to 13.5 liters/hour 3600 W heater
	Up to 16 liters/hour 4200 W heater
	Up to 18 liters/hour 6300 W heater
Temperature range	Room temperature up to 180  °C
Heating power	230 V 1-phase; 3600 W (3 W/cm2)
	optional 4200 W (3,5 W/cm2, for water only)
Regulation precision	+/- 2  °C
Bath over temperature protection	• Independent electronic monitoring circuit, mechanical
	reset
	• Error if the actual temperature is 15  °C above the setpoint
Bath lift	Linear drive, safety class
Battery	Lead-acid, 12 V
Rotational drive
Motor	200 V; 1-phase; 0.6 A at 50 Hz
Control	Electronic, with softstart
Rotation speed	5 – 140 rpm
Accuracy	+/- 1 rpm at 5 rpm to +/- 5 rpm at 150 rpm
Behavior in case of rotation error	• Bath lowered, heater off, rotation off
	• Indication of the error
	• Reset possible
Glass assembly

Pressure in the glass assembly Tightness

Required external vacuum pump performance for vacuum evaporation

Sensors

0 mbar up to ambient pressure < 1 mbar/min

2 – 4 m3/h

Vapor temperature	PT-1000, 2-wire
Bath temperature	PT-1000, 2-wire
Bath level sensor	n.a.
Pressure	Ceramic, capacitive

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3  Technical data

3..3 Materials used

All materials in contact with the product are FDA compliant!

Materials used

Component	Material designation	Material code	Risk and safety statements
Stainless steel	Chassis	1.4301	—
Stainless steel	Bath pan, heating	1.4404	—
	elements
Aluminium	Gearbox head	3.2373	—
Glass	Glass assembly	3.3 borosilicate	—
		(DIN / ISO 3585)
Polytetrafluoroethylene	Seals, taps	PTFE	—
Polyarylamid	EasyClamp	PAA	—
Perfluoro (ethylene-propylene)	Seals	PTFE-PEP	—
Lead	Lead acid battery	PB	R 61-20/22-33-
			50/53-62,
			S 53-45-60-61
			accord. to EN directive
			67/548/EWG
Sulfuric acid	Lead acid battery	H2SO4	R 35, S (1/2)-26-
			30-45 accord. to EN
			directive 67/548/EWG

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4  Description of function

4 Description of function

This chapter explains the basic working principle of the Rotavapor R-220 SE. It also shows how the instrument is structured and provides a general functional description of its assemblies.

4..1 Functional principle of a Rotavapor evaporation

The Rotavapor R-220 SE offers efficient, time saving single-stage distillations for small and medium stage productional applications. The process is based on the evaporation and condensation of solvents or drying of powders and pasty materials in a rotating evaporating flask .

Standard vacuum applications

Due to its sophisticated seal system a highly stable vacuum level can be reached in combination with a vacuum controller and a vacuum pump. The vacuum also eliminates unwanted or hazardous emissions of vapors during the process and serves as an important safety feature. The low pressure decreases the boiling point of the medium inside the Rotavapor. This allows to treat the product gently at even higher evaporation performance compared to environmental pressure operation.

Special applications

•In combination with the dry ice condenser (configuration ‘C’) distillations at lowest temperatures can be achieved

•For the oxydation of sensitive products, the processing can take place under inert gas conditions

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4  Description of function

Safety reserve

Cooler with b cooling medium

Optimal condensation

zone range a (~ 80% cooler height)

Rotation drive for evaporating flask

Evaporating solvent

Condensated solvent

Heating bath with heating liquid

c

aEvaporation area

The solvent is heated by means of a heating bath. The turbulent mixing inside the rotating evaporating flask results in an increased evaporation rate.

The drive unit offers a wide range of rotational speeds to perfectly match different evaporation tasks. It also leads to an even mixing of the sample, thus preventing stationary overheating in the flask. When drying powders or pasty materials, the rotation ensures smooth and

thorough drying.

bCooling area

The solvent vapor quickly enters the condenser. Here, the energy in the solvent vapor is transferred to the cooling medium (mostly water), so that the solvent condenses.

cReceiving flask

The receiving flask collects the condensed solvent.

NOTE

For information about optimum distillation conditions see section 6, Operation.

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4  Description of function

4..2 Rotavapor front-side

Various glassware configurations are available for the Rotavapor R-220 SE.

Condenser(s)

Distribution piece

Manual inlet valve

Shut off tap, large

Evaporating flask

Condensate cooler

Shut off tap

Receiving flask

Draining valve

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4  Description of function

4..3 Tubing scheme

		4
				1	f
			3
		2
VAPOR TEMP.	CW TEMP.
LEVEL 2	LEVEL 2				e
CW FLOW	RESERVE
	INPUT
RS-485
RS-485
AERATE	CW VALVE			d
VACUUM VALVE
					g
	12A	12A	12A	12A
	F1	F2	F3	F4
FOAM DET.	ALARM OUT		(Type plate)
USB				AC IN
	220240 V AC				a
	MAX. 2A
				b
				c

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4  Description of function

	Vacuum / gas circuit
1		Vacuum pump (recommended type:	For most applications a vaccum is used to significantly reduce
		Vacuum Pump V-710)	the boiling point of the liquid content inside the evaporating flask.
	2 + 3 Aeration / inert gas inlet at the		The aeration valves at the optional vacuum controller and the
		optional vacuum controller and the	aeration valve of the Rotavapor are used to aerate the Rotavapor.
		aeration valve

Under inert conditions, both aeration inlets must be connected to an inert gas source with regulated output pressure equal to ambient air pressure!

4Vacuum sensor tube at vacuum controller

If a Vacuum Controller V-850 / V-855 is installed, a tube connection must be established to detect the vacuum level inside the glassware.

	Cooling medium circuit
	a	Chiller or cooling water tap (optional	When a chiller is used, up to 300 liters of mains water can be
		with cooling water valve)	saved a day during operation. In addition, higher process safety
			and lower solvent emissions due to the constant, low cooling
			temperature can be achieved.
			The cooling water valve can also significantly reduce cooling
			water consumption by cutting off the water supply when no
			cooling is necessary.
	b	Replenishment water tap	For safety reasons the replenishment water tap must not be
			connected when a heating medium different to water is used!
	c	Water flow sensor	Detects cooling water flow when installed.
	d	Flow reducing valve	The valve can be used to reduce the cooling water flow to
			achieve the best cooling to water consumption ratio.
	e	Condensate cooler	This cooler inhibits evaporation from the receiving flask. It is part
			of some glassware configurations.

fCooler(s)

gCooling water output to sink / return loop to chiller

Depending on the type of glassware configuration, one or more coolers can be connected in serial.

The warmed cooling water can be disposed of into a sink or reused in a closed cooling cycle when a chiller is used.

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4  Description of function

4..3..1 Cooling water routing

General memory aid for cooling water routing

Independent of the number of coolers, the water inlet has to be connected in ascending order starting with the cooler closest to the receiving vessel. The water output is always the upper connector!

Example:

Output (sink or chiller reflux)

Vapor temp. sensor

Input (water tap or chiller)

Receiving

vessel

The drawing shows the cooling water routing for a setup of three coolers. Other arrangements with single or double cooler setup can be connected accordingly.

!DANGER

Death or serious burns by deflagration of hot heating bath liquids.

•Secure all cooling water hoses against slip off with hose clamps

NOTE

The vapor temperature sensor always has to be installed before the vapor inlet of the first condenser.

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4  Description of function

4..3..2 Vaccum routing

General memory aid for vacuum routing

Independent of the installed glassware setup the vacuum pump has to be connected at the end of the cooling path. Depending on the used setup this can either be subsequently at or after the last condenser.

Example 1:

Connection to vacuum controller	End of cooling path

Connection to vacuum source

Vapor temp. sensor

Vapor path

NOTE

In case the Rotavapor is not equipped with a vacuum controller a blind cap must be used to close the vacuum controller connector to achieve a tight setup. The vapor temperature sensor always has to be installed before the vapor inlet of the first condenser.

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4  Description of function

Example 2:

Connection to vacuum controller

Vapor temp. sensor

Connection to vacuum source

End of cooling path

Vapor path

NOTE

In case the Rotavapor is not equipped with a vacuum controller a blind cap must be used to close the vacuum controller connector to achieve a tight setup. The vapor temperature sensor always has to be installed before the vapor inlet of the first condenser.

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4  Description of function

4..4 User interface front-side

Vacuum Controller V-850 / V-855 *

System parameter display and functional buttons

USB socket for recording **

				Start
				Stop
					ON / OFF switch
Temp.	Heater	Record	Lift	Rotation
	ON/OFF			ON/OFF
UP			UP
DOWN	AERATE		DOWN	Rotavapor	Turning knob to
					adjust rotational
				R-220 SE
					speed

*Not included in Basic version

**Optional accessory

USB PEN Drive

				Functionality
	UP			Increases the set temperature of the heating bath
	DOWN			Decreases the set temperature of the heating bath
				Heater:
	ON/OFF			Switches the heating bath ON / OFF
				Rotation:
				Switches the rotation drive ON / OFF
	AERATE			Opens the aeration valve at the Rotavapor rear-side
				Starts or stops recording onto a USB PEN Drive.
	UP			Functionality changes on the basis of the corresponding button description on the display
	DOWN			Functionality changes on the basis of the corresponding button description on the display

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4  Description of function

4..5	Connection field at the rear-side
		a			b
							e
							c
	n						d
		VAPOR TEMP.	CW TEMP.
	m	LEVEL 1	LEVEL 2
		CW FLOW	RESERVE
			INPUT
		RS-485
	l	RS-485					m
		AERATE	CW VALVE				e
		VACUUM VALVE
	k
							f
			12A	12A	12A	12A
			F1	F2	F3	F4	g
							h
		FOAM DET.	ALARM OUT		(Type plate)
	j	USB				AC IN
			220240 V AC
			MAX. 2A
				i
	Position	Drawing					Description

a

Vapor temperature sensor, measures the entry temperature of the vapor before the condenser.

b

Cooling water temperature sensor. Must be looped-in between cooling water source outlet and cooler/cooler assembly of the Rotavapor.

	c	See master drawing for appearance	Aerate valve (parallel to controller aeration valve)
		and mounting position.

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