Buchi Lyovapor L-200 Operation Manual
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Buchi Lyovapor L-200 Operation Manual

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Lyovapor™ L-200/L-200 Pro
Operation Manual

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  • Page 1 Lyovapor™ L-200/L-200 Pro Operation Manual...
  • Page 2 CH-9230 Flawil 1 E-Mail: quality@buchi.com BUCHI reserves the right to make changes to the manual as deemed necessary in the light of experi- ence, especially with respect to structure, illustrations and technical details. This manual is copyrighted. Information from it may neither be reproduced, distributed, or used for com- petitive purposes, nor made available to third parties.

  • Page 3: Table Of Contents

    BÜCHI Labortechnik AG Table of contents Contents About this document...................... 7 Connected devices .......................... 7 Warning notices in this document...................... 7 Symbols ...............................  7 1.3.1 Warning symbols ........................ 7 1.3.2 Mandatory directive symbols .................... 8 1.3.3 Mark-ups and symbols...................... 8 Trademarks............................ 8 Safety............................ 9 Proper use ............................
  • Page 4 Requirements for local network settings ................ 29 5.5.2 Preparing the instrument for app using..................  30 5.5.3 Enabling BUCHI Cloud access .................... 30 Insert SD card (Pro control panel only).................... 30 Operating the control panel.................... 32 Layout of the control panel ........................  32 Function bar............................
  • Page 5 BÜCHI Labortechnik AG Table of contents Operating Pro control panel ..................... 42 Layout of Pro control panel........................  42 Function bar............................ 42 Other symbols on the control panel .................... 44 Menu bar............................ 44 7.4.1 Start menu .......................... 44 7.4.2 Favourites menu ........................ 45 7.4.3 Method menu .........................
  • Page 6 Table of contents BÜCHI Labortechnik AG Help with faults ........................ 83 10.1 Troubleshooting .......................... 83 10.2 Faults, possible causes and remedies.................... 83 10.3 Locating leaking manifold valve...................... 84 10.4 Finding a leaking regulating valve or aeration valve................ 84 Taking out of service and disposal..................  86 11.1 Disposal .............................

  • Page 7: About This Document

    If you have any questions after reading this operation manual: Contact BÜCHI Labortechnik AG Customer Service. https://www.buchi.com/contact Connected devices In addition to these operating instructions, you should also follow the instructions and specifications in the documentation for the connected devices.

  • Page 8: Mandatory Directive Symbols

    1 | About this document BÜCHI Labortechnik AG 1.3.2 Mandatory directive symbols Symbol Meaning Symbol Meaning Wear safety goggles Wear protective clothing Wear protective gloves Heavy load, do not lift with- out assistance 1.3.3 Mark-ups and symbols NOTE This symbol draws attention to useful and important information. R This character draws attention to a requirement that must be met before the in- structions below are carried out.

  • Page 9: Safety

    BÜCHI Labortechnik AG Safety | 2 Safety Proper use The Lyovapor™ L-200 is used for freeze-drying solid materials in ampoules, vials, dishes, round-neck or wide-neck flasks and trays is exclusively intended for that pur- pose. The Lyovapor™ L-200 can be used in laboratories for the following tasks: —...

  • Page 10: Location Of Warning Signs On The Product

    — Safety-related incidents that occur while using the device should be reported to the manufacturer (quality@buchi.com). BUCHI service technicians Service technicians authorized by BUCHI have attended special training courses and are authorized by BÜCHI Labortechnik AG to carry out special servicing and repair measures.

  • Page 11: Damage To The Ice Condenser

    Technical modifications to the device or accessories should only be carried out with the prior written approval of BÜCHI Labortechnik AG and only by authorized BUCHI technicians. BUCHI accepts no liability whatsoever for damage arising as a result of unauthorized modifications. Operation Manual Lyovapor™ L-200/L-200 Pro...

  • Page 12: Product Description

    3 | Product description BÜCHI Labortechnik AG Product description Description of function The Lyovapor™ is a freeze-dryer in which frozen preparations can be gently dried. The basis of freeze-drying is sublimation. Sublimation refers to the process whereby a substance transforms directly from the solid to the gaseous state. The physical process of sublimation can be explained using the solvent water as an example.

  • Page 13: Secondary-Drying Phase

    BÜCHI Labortechnik AG Product description | 3 If using a drying chamber with heatable shelves, heat transfer takes place by direct contact. The temperature of the heatable shelves is controllable. Control of the ther- mal energy transferred is then possible. Controlling the heat transfer prevents the following critical temperatures for amor- phous and crystalline materials to be reached: —...

  • Page 14: Configuration

    3 | Product description BÜCHI Labortechnik AG Configuration 3.2.1 Front view Fig. 2: Front view Lyovapor™ L-200 Connections for heated shelves Ice condenser (Lyovapor™ L-200 Pro only) (48 V, max. 2 A) Ventilation slots On/Off master switch User interface 3.2.2 Rear view Fig. 3: Rear viewLyovapor L-200 Connections on the rear side...

  • Page 15: Connections On The Rear Side

    BÜCHI Labortechnik AG Product description | 3 3.2.3 Connections on the rear side Fig. 4: Connections on rear panel Vacuum pump connection Vacuum connection Type plate Refrigerant details Main valve connection Pressure regulating valve connection (24 V, ≤ 0.4 A) (24 V, ≤ 0.4 A) Aeration valve connection Spare (24 V, ≤...

  • Page 16: Pro Control Panel

    Fig. 6: Pro control panel Touch-screen display Navigation control Type plate The type plate identifies the instrument. The type plate is located on the rear of the in- strument. Buchi Operations India Private Limited 394230 Surat / India Type xxxxxxxx Volt xxx-xxx VAC...

  • Page 17: Scope Of Delivery

    BÜCHI Labortechnik AG Product description | 3 Scope of delivery NOTE The scope of delivery depends of the configuration of the purchase order. Accessories are delivered as per the purchase order, order confirmation, and deliv- ery note. Refrigerant Specification The refrigerant details are shown on the back of the instrument. Type: L-xxx xxHz Cooling System Refrigerant: Rxxx...

  • Page 18: Ambient Conditions

    3 | Product description BÜCHI Labortechnik AG Specification L-200 for 50Hz L-200 for 60Hz Condenser capacity ≤ 6 kg ≤ 6 kg Condenser surface area 1410 cm 1410 cm Number of compressors Refrigerant R507 CFC-free R507 CFC-free Refrigerant quantity 485 g 467 g Drying shelf temperature up to 60 °C...

  • Page 19: Transport And Storage

    BÜCHI Labortechnik AG Transport and storage | 4 Transport and storage Transport NOTICE Risk of breakage due to incorrect transportation Make sure that the instrument is fully dismantled. Pack every instrument components properly to prevent breakage. Use the original packaging whenever possible. Avoid sharp movements during transit.
  • Page 20 4 | Transport and storage BÜCHI Labortechnik AG Fig. 9: Lifting the instrument Instrument Feet Equipment trolley Castor brakes on trolley Precondition: R Make sure that the castor brakes on the equipment trolley are locked on. Lift the instrument – this requires four persons each lifting at one of the points indi- cated on the front and rear of the instrument.

  • Page 21: Installation

    BÜCHI Labortechnik AG Installation | 5 Installation Installation site NOTICE Instrument damaged if switched on too early. After transporting, wait twelve hours before switching on the instrument. The fluid in the cooling system requires twelve hours to collect in the refrigerant compressor. The installation site must meet the following requirements: —...

  • Page 22: Putting The Instrument In Operation

    5 | Installation BÜCHI Labortechnik AG Fig. 10: Lyovapor™ L-200 Lashing mount Tie the lashing mount to a fixed point using strong cord or a wire. Putting the instrument in operation NOTICE Instrument damaged if restarted too early Wait ten minutes before restarting the instrument. The oil in the refrigerant compres- sor requires ten minutes to return to the collection tank.

  • Page 23: Fitting The Advanced Vacuum Control Unit

    Risk of property damage and diminished performance due to use of un- suitable power cables. The power supply cables supplied with the product by BUCHI precisely match the re- quirements of the device. If other power cables that do not meet those requirements are used, the device may be damaged and/or its performance diminished.

  • Page 24: Manual Switch On The Main Valve

    5 | Installation BÜCHI Labortechnik AG Fit the pressure-regulating valve onto the 90° elbow. Fit the assembled advance vacuum control unit onto the instrument. Plug the aeration valve connector into the socket marked Aeration Valve. Plug the pressure-regulating valve connector into the socket marked Regulation valve.

  • Page 25: Connecting The Inert Gas (Optional Feature)

    BÜCHI Labortechnik AG Installation | 5 Fig. 11: Manual switch on main valve Main valve Manual switch on main valve Manual switch positions Manual switch po- Meaning sition Precondition: R Pressure-regulating valve and venting valve are connected. The vacuum is regulated by the pressure-regulating valve and venting valve.

  • Page 26: Assembling Pressure Sensor Ppg010 (Optional Accessory)

    5 | Installation BÜCHI Labortechnik AG 5.3.6 Assembling pressure sensor PPG010 (optional accessory) The pressure sensor measures the pressure in the ice condenser. To protect against damage in transit, the pressure sensor is supplied pre-calibrated in the original packaging. Fig. 12: Fitting the pressure sensor Pressure sensor PPG010 Clamp, ISO-KF 16 Seal, ISO-KF 16...

  • Page 27: Fitting The Drain Valve Strainer

    BÜCHI Labortechnik AG Installation | 5 Fig. 13: Fitting alternative pressure sensor Connection, ISO-KF 16 External pressure sensor connection Switch the On/Off master switch to Off. Remove the blanking cap from the connection (1). Connect the pressure sensor to the connection (1). Plug the pressure sensor connecting lead into the socket marked External Vac- uum Sensor (2).

  • Page 28: Commissioning The Vacuum Pump

    5 | Installation BÜCHI Labortechnik AG NOTICE Contamination of the device Escaping condensate can contaminate the instrument. Fit the condensate drain hose with a downward slope. Make sure that the drain hose is not immersed in the condensate. Seal the condensate drain hose with the end plug as soon as cleaning of the in- strument is completed.

  • Page 29: Establishing Lan Connection

    BÜCHI Labortechnik AG Installation | 5 NOTICE Closed gas ballast valve when using solvent. A closed gas ballast valve when using solvents can cause damage to the instrument. When using solvents, keep the gas ballast valve open. NOTE To increase the service life of the vacuum pump, operate the vacuum pump with an open gas ballast valve.

  • Page 30: Preparing The Instrument For App Using

    5 | Installation BÜCHI Labortechnik AG In order to use the BUCHI Cloud a DNS server must be configured on the instru- ment. NOTE If there is no DNS server available enter the IP address for the BUCHI Cloud connec- tion manually.
  • Page 31 BÜCHI Labortechnik AG Installation | 5 Fold the control panel forward. Insert the SD card on the underside. Switch on the instrument. ð The status bar shows the SD card symbol. The following data is stored on the SD card: —...

  • Page 32: Operating The Control Panel

    6 | Operating the control panel BÜCHI Labortechnik AG Operating the control panel This section describes the operation of the instrument using the control panel. CAUTION Risk of injury from glass splinters Sharp objects can damage the display. Keep sharp objects away from the display. Layout of the control panel Fig. 16: Layout of the control panel Description...

  • Page 33: Menu Bar

    BÜCHI Labortechnik AG Operating the control panel | 6 General function buttons Symbol Description Meaning [Back] The display reverts to the previous view. [Cancel] Cancels an operation. E SC [Add to favourites] Adds the selected item to the [[Favourites]] menu. [Remove from Removes the selected item from the favourites]...

  • Page 34: Start Menu

    6 | Operating the control panel BÜCHI Labortechnik AG Menu sym- Meaning Submenu/Action — Process settings [Configuration] menu — Settings — Servicing — Service — System information — Notifications [Messages] menu — Logbook 6.3.1 Start menu On the [Start] menu, parameters can be set manually. Changing parameters Select a parameter by turning the navigation control.
  • Page 35 Action Option Explanation [Mobile connection View The control panel shows a password password] for entry in the BUCHI Monitor app. [Mobile connection View The control unit shows a QR code QR code] for reading by the BUCHI Monitor app. [Language]...
  • Page 36 6 | Operating the control panel BÜCHI Labortechnik AG Action Option Explanation [Leak test] Perform leak test See Chapter 9.3.1 "Performing a leak test with a drying chamber", page 80 Submenu Service NOTE While freeze-drying is in progress, no settings can be changed on the Service sub- menu.

  • Page 37: Status Bar

    BÜCHI Labortechnik AG Operating the control panel | 6 Action Option Explanation [L-200] View The following information on the L-200 is available: — Serial number — Firmware version — Hours of duty — Status — PCB Temperature — 48V power supply —...
  • Page 38 The instrument is restarting after a temporary power failure. Symbols on the status bar Symbol Status The instrument is connected to the BUCHI Cloud. The instrument is defrosting. The instrument is starting up. The instrument is in energy-saving mode. 38/94...

  • Page 39: Carrying Out Freeze-Drying

    BÜCHI Labortechnik AG Operating the control panel | 6 Symbol Status Before the freeze-drying process: Load the top-mount drying rack with a frozen sample. After the freeze-drying process: Remove the dried sample from the top-mount drying rack. The system evacuates to the set pressure. The instrument is performing a vacuum test or a leak test.

  • Page 40: Editing Parameters While The Process Is Running

    6 | Operating the control panel BÜCHI Labortechnik AG Load the top-mount drying rack with frozen samples. Navigate to the [Start] menu via the navigation path. Enter the required settings for the process parameters. Tap the function [Start] on the function bar. ð...

  • Page 41: Switching Off The Instrument

    BÜCHI Labortechnik AG Operating the control panel | 6 Navigation path ➔ Start Precondition: R The freeze-drying process has ended. Position the condensate drain hose so that the condensate can be drained off. See Chapter 5.3.9 "Preparing the condensate drain hose", page 27 Navigate to the [Start] menu via the navigation path.

  • Page 42: Operating Pro Control Panel

    7 | Operating Pro control panel BÜCHI Labortechnik AG Operating Pro control panel This section describes the operation of the instrument using the Pro control panel. CAUTION Risk of injury from glass splinters Sharp objects can damage the display. Keep sharp objects away from the display. Layout of Pro control panel Fig. 17: Layout of Pro control panel Description...
  • Page 43 BÜCHI Labortechnik AG Operating Pro control panel | 7 Symbol Description Meaning [Cancel] Cancels an operation. E SC [Add to favourites] Adds the selected item to the [[Favourites]] menu. [Remove from Removes the selected item from the favourites] [Favourites] menu. [Confirm] Confirms an entry.

  • Page 44: Other Symbols On The Control Panel

    7 | Operating Pro control panel BÜCHI Labortechnik AG Symbol Description Meaning [Copy] Copies the selected method. C OP Y Other symbols on the control panel Symbol Description Meaning [Closed] The assigned method is active and cannot be changed. Menu bar The menus are represented by symbols on the menu bar.

  • Page 45: Favourites Menu

    Settings submenu The submenu [Settings] contains system settings for the instrument. Action Option Explanation [Mobile connection View The control panel shows a password password] for entry in the BUCHI Monitor app. Operation Manual Lyovapor™ L-200/L-200 Pro 45/94...
  • Page 46 BÜCHI Labortechnik AG Action Option Explanation [Mobile connection View The control unit shows a QR code QR code] for reading by the BUCHI Monitor app. [Language] Choice of display lan- The following languages are avail- guage on the control able: panel...
  • Page 47 BÜCHI Labortechnik AG Operating Pro control panel | 7 Submenu Maintenance The submenu [Maintenance] contains tests for maintaining the instrument. Action Option Explanation [Vacuum test] Perform vacuum test See Chapter 9.2 "Performing a vac- uum test", page 79 [Leak test] Perform leak test See Chapter 9.3.1 "Performing a leak test with a drying chamber", page 80...

  • Page 48: Messages Menu

    7 | Operating Pro control panel BÜCHI Labortechnik AG Action Option Explanation [Control panel] View The following information on the control panel is available: — Serial number — Firmware version — Hours of duty — Status — PCB Temperature — 24V power supply —...

  • Page 49: Status Bar

    BÜCHI Labortechnik AG Operating Pro control panel | 7 Symbol Description Meaning Acknowledged The message has been be processed and acknowledged. < Sent The message initiator is no longer present. > Received The display shows a message. Status bar The status bar shows the status of the instrument. The following statuses are possible: Indication on status bar Unload / Load...

  • Page 50: Editing A Method

    The instrument is starting up. The instrument is in the course of a manual freeze-drying process. The instrument is connected to the BUCHI Cloud. Before the freeze-drying process: Load the top-mount drying rack with a frozen sample.

  • Page 51: Changing The Name Of A Method

    BÜCHI Labortechnik AG Operating Pro control panel | 7 Tap the function [New] on the function bar. ð The new method is created. Creating a new method by copying an existing method Navigation path ➔ Method Navigate to the [Method] menu via the navigation path. Tap the name of the method that you wish to copy.

  • Page 52: Setting The Gas Type

    7 | Operating Pro control panel BÜCHI Labortechnik AG Tap the function [Save] on the function bar. ð The setting is saved. ð The dialog box closes. 7.6.4 Setting the gas type Navigation path ➔ Method Navigate to the [Method] menu via the navigation path. Tap the name of the method that you wish to edit.
  • Page 53 BÜCHI Labortechnik AG Operating Pro control panel | 7 Navigate to the [Method] menu via the navigation path. Tap the name of the method that you wish to edit. ð The control panel highlights the selected method in green. Tap the action [Steps]. ð...

  • Page 54: Setting The Phases Of A Method

    7 | Operating Pro control panel BÜCHI Labortechnik AG When asked to confirm, press [OK]. ð The step is deleted. 7.6.7 Setting the phases of a method NOTE The settings in the Phase view affect all steps of a phase. Navigation path ➔...
  • Page 55 BÜCHI Labortechnik AG Operating Pro control panel | 7 Phase Setting Option Meaning [Sec- [Pressure ac- None/Sample None: no action is carried out. ondary tion] protection/ Sample protection: if the pressure is drying] Message too high, heating of the shelves is paused.

  • Page 56: Deleting A Method

    7 | Operating Pro control panel BÜCHI Labortechnik AG Tap the function [Save] on the function bar. ð The setting is changed. Deleting a method Navigation path ➔ Method Navigate to the [Method] menu via the navigation path. Tap the name of the method that you wish to edit. ð...
  • Page 57 BÜCHI Labortechnik AG Operating Pro control panel | 7 The pressure difference test establishes the difference between the readings from two pressure sensors in the drying chamber. If the difference between the two sensor readings is below a threshold, the freeze-drying phase can be ended. Navigation path ➔...

  • Page 58: Temperature Difference Test

    7 | Operating Pro control panel BÜCHI Labortechnik AG Setting Option Explanation [Message] Yes/No The control panel shows or does not show a message as soon as the pressure difference test is passed. 7.8.3 Temperature difference test NOTE The temperature test is successfully completed if all drying shelves are below the threshold.

  • Page 59: Determining Offset Value

    BÜCHI Labortechnik AG Operating Pro control panel | 7 Setting Option Explanation [Term] Enter value The period of time during which the difference is not to be ex- ceeded. If the threshold is not exceeded for the full period of time, the temperature difference test is passed.

  • Page 60: Starting Freeze-Drying

    7 | Operating Pro control panel BÜCHI Labortechnik AG Tap the method that you wish to use. Tap the function [Activate] on the function bar. ð The status bar shows the method activated. 7.9.3 Starting freeze-drying CAUTION Risk of skin burns from touching parts of the ice condenser after com- pletion of conditioning.

  • Page 61: Ending Freeze-Drying

    BÜCHI Labortechnik AG Operating Pro control panel | 7 Tap the function [Start] on the function bar. ð The freeze-drying process starts. ð The control panel shows the Start menu with a black background. ð The system carries out the selected method. 7.9.4 Ending freeze-drying Navigation path...

  • Page 62: Performing Freeze-Drying Manually [Pro Control Panel]

    7 | Operating Pro control panel BÜCHI Labortechnik AG 7.10 Performing freeze-drying manually [Pro control panel] 7.10.1 Preparing the instrument Time approx. 30min quired: NOTE To minimize the condensation of moisture from the air in the condenser, place a dry- ing rack.

  • Page 63: Editing Parameters While The Process Is Running

    BÜCHI Labortechnik AG Operating Pro control panel | 7 Tap the function [Start] on the function bar. ð The freeze-drying process starts. ð The background color of the Start menu changes from white to black. ð The status bar shows a clock counting up and the status Manual Drying. ð...

  • Page 64: Switching Off The Instrument

    7 | Operating Pro control panel BÜCHI Labortechnik AG Navigation path ➔ Start Precondition: R The freeze-drying process has ended. Position the condensate drain hose so that the condensate can be drained off. See Chapter 5.3.9 "Preparing the condensate drain hose", page 27 Navigate to the [Start] menu via the navigation path.

  • Page 65: Operating Top-Mount Drying Racks

    BÜCHI Labortechnik AG Operating top-mount drying racks | 8 Operating top-mount drying racks Operating stoppering acrylic drying chamber Make sure that the groove above the ice con- denser is clean, free of dust and not scratched. Check the 300 mm dia. O-ring for damage and grease it with vacuum grease.
  • Page 66 8 | Operating top-mount drying racks BÜCHI Labortechnik AG Align the slots for the shelves. Tighten the fixing screws. Place the rack on the intermediate plate. Slide the shelves into the rack. Press the plug onto the shelf connection and turn the ring counterclockwise at the same time.
  • Page 67 BÜCHI Labortechnik AG Operating top-mount drying racks | 8 Locate the cylinder in the groove above the main plate. Check the O-ring for damage and grease it with vacuum grease. Screw the hand wheel upwards until the plate inside the lid has pressed the hooks all the way in.

  • Page 68: Operating Manifold Acrylic Drying Chamber (Heatable Shelves)

    8 | Operating top-mount drying racks BÜCHI Labortechnik AG Operating manifold acrylic drying chamber (heatable shelves) Make sure that the groove above the ice con- denser is clean, free of dust and not scratched. Check the 300 mm dia. O-ring for damage and grease it with vacuum grease.
  • Page 69 BÜCHI Labortechnik AG Operating top-mount drying racks | 8 Place the rack on the intermediate plate. Slide the shelves into the rack. Press the plug onto the shelf connection and turn the ring counterclockwise at the same time. (option) Turn the temperature sensor electrical con- nector so that the marks on the connector and the heatable shelf are parallel Press the temperature sensor electrical con-...

  • Page 70: Operating Manifold Acrylic Drying Chamber (Non-Heatable Shelf)

    8 | Operating top-mount drying racks BÜCHI Labortechnik AG Fit manifold valve onto the connection on the top-mount drying rack. Check the O-ring for damage and grease it with vacuum grease. Place the O-ring into the groove of the cover. Place the manifold cover on the cylinder.
  • Page 71 BÜCHI Labortechnik AG Operating top-mount drying racks | 8 Place the intermediate plate on the ice con- denser. Place the rack on the intermediate plate. Locate the cylinder in the groove above the main plate. Fit manifold valve onto the connection on the top-mount drying rack.

  • Page 72: Operating Acrylic Drying Chamber (Heatable Shelf)

    8 | Operating top-mount drying racks BÜCHI Labortechnik AG Check the O-ring for damage and grease it with vacuum grease. Place the O-ring into the groove of the cover. Place the manifold cover on the cylinder. Carry out freeze-drying. Operating acrylic drying chamber (heatable shelf) Make sure that the groove above the ice con- denser is clean, free of dust and not scratched.
  • Page 73 BÜCHI Labortechnik AG Operating top-mount drying racks | 8 Loosen all fixing screws. Align the slots for the shelves. Tighten the fixing screws. Place the rack on the intermediate plate. Slide the shelves into the rack. Operation Manual Lyovapor™ L-200/L-200 Pro 73/94...
  • Page 74 8 | Operating top-mount drying racks BÜCHI Labortechnik AG Press the plug onto the shelf connection and turn the ring counterclockwise at the same time. (option) Turn the temperature sensor electrical con- nector so that the marks on the connector and the heatable shelf are parallel Press the temperature sensor electrical con- nector onto the connection.

  • Page 75: Operating Acrylic Drying Chamber (On-Heatable Shelf)

    BÜCHI Labortechnik AG Operating top-mount drying racks | 8 Operating acrylic drying chamber (on-heatable shelf) Make sure that the groove above the ice con- denser is clean, free of dust and not scratched. Check the 300 mm dia. O-ring for damage and grease it with vacuum grease.

  • Page 76: Operating Manifold Drying Rack

    8 | Operating top-mount drying racks BÜCHI Labortechnik AG Check the O-ring for damage and grease it with vacuum grease. Place the O-ring into the groove of the cover. Place the cover on the cylinder. Carry out freeze-drying. Operating manifold drying rack Make sure that the groove above the ice con- denser is clean, free of dust and not scratched.

  • Page 77: Operating Manifold Valves

    BÜCHI Labortechnik AG Operating top-mount drying racks | 8 Place the seal on the connection. Fit the manifold drying rack onto the seal and fix it with the clamp. Carry out freeze-drying. Operating manifold valves The lever on a manifold valve can be set to the following positions: Position Function A: Lever pointing up...

  • Page 78: Cleaning And Servicing

    Users may only carry out the servicing and cleaning operations described in this sec- tion. Any servicing and repair work which involves opening up the casing may only be car- ried out by BUCHI service technicians. Regular maintenance work Component...

  • Page 79: Performing A Vacuum Test

    BÜCHI Labortechnik AG Cleaning and servicing | 9 Component Action Interval Draining valve Remove the strainer. Weekly Fill ice condenser with water. Open the drain valve manually. Loosen deposits from drain valve us- ing compressed air. Heat exchanger Remove dust and foreign objects Monthly from the ventilation slots using com- pressed air or a vacuum cleaner.

  • Page 80: Performing A Leak Test

    9 | Cleaning and servicing BÜCHI Labortechnik AG Possible cause Action KF seals dirty Wipe down the KF seals with a damp cloth. KF seals damaged Inspect KF seals and replace as neces- sary. The pump connected is not delivering Carry out vacuum test with a different sufficient performance vacuum pump.

  • Page 81: Performing Leak Test With A Manifold Drying Rack

    BÜCHI Labortechnik AG Cleaning and servicing | 9 ð The leak test is passed if the measured leakage rate is less than the pre-set rate of 10.10 mbar*L/h. Troubleshooting after failed leak test Possible cause Action Top-mount drying rack not correctly fitted Fit the top-mount drying rack correctly. O-rings dirty Wipe down the O-ring with a damp cloth.
  • Page 82 9 | Cleaning and servicing BÜCHI Labortechnik AG 13.64L Tap the function [Start] on the function bar. ð The leak test starts. ð The status bar shows the status Leak Test. ð When the leak test is completed, the [Leak test] tab indicates whether the leak test was successful.

  • Page 83: Help With Faults

    BÜCHI Labortechnik AG Help with faults | 10 Help with faults 10.1 Troubleshooting Problem Possible cause Action Compressor fails to No power supply to compres- Check the power supply start or switches off and switch on the device. Compressor overheated Allow the compressor to cool down.

  • Page 84: Locating Leaking Manifold Valve

    10 | Help with faults BÜCHI Labortechnik AG Malfunction Possible cause Remedy Vacuum is not Vacuum system is leaking. Clean the drain valve. achieved Check manifold valve. See Chapter 10.3 "Locating leaking manifold valve", page 84 Check regulating valve and aeration valve. See Chap- ter 10.4 "Finding a leaking regulating valve or aeration valve", page 84...
  • Page 85 BÜCHI Labortechnik AG Help with faults | 10 Fit a top-mount drying rack. See Chapter 8 "Operating top-mount drying racks", page 65. Navigate to the [Start] menu via the navigation path. Tap the function [Manual] on the function bar. Enter the specified settings for the vacuum. Tap the function [Start] on the function bar.

  • Page 86: Taking Out Of Service And Disposal

    Dispose of the appliance properly, if necessary using a professional disposal ser- vice. When disposing of equipment observe the local regulations and statutory require- ments regarding waste disposal. 11.2 Returning the instrument Before returning the instrument, contact the BÜCHI Labortechnik AG Service Depart- ment. https://www.buchi.com/contact 86/94 Operation Manual Lyovapor™ L-200/L-200 Pro...

  • Page 87: Appendix

    Appendix 12.1 Spare parts and accessories Use only genuine BUCHI consumables and spare parts in order to ensure correct, safe and reliable operation of the system. NOTE Any modifications of spare parts or assemblies are only allowed with the prior written permission of BUCHI.

  • Page 88: Further Accessories

    12 | Appendix BÜCHI Labortechnik AG Description Order no. Image Set for pressure difference test at L-200 11067590 incl. PPG010 and CDG 020D sensors, PMMA top cover, seals and clamps 12.1.2 Further accessories Description Order no. Image Trolley L-200, stainless steel coated 11063692 SD-Card 1 GB 11064730...
  • Page 89 BÜCHI Labortechnik AG Appendix | 12 Description Order no. Image Vacuum hose, KF 25, L 1000 mm 11066031 Vacuum clamp KF 16 11064939 Vacuum clamp KF 25 11063662 Vacuum clamp, KF 40 11063663 Vacuum seal KF 16 11063455 Vacuum seal KF 25 11063457 Vacuum seal KF 40 11063659...

  • Page 90: Top-Mount Drying Rack Accessories

    12 | Appendix BÜCHI Labortechnik AG Description Order no. Image Blind flange KF 25 11063660 Blind flange KF 40 11063661 12.1.4 Top-mount drying rack accessories Description Order no. Image Drying chamber tube, PMMA, for 4 11063278 shelves L 368 mm, Ø 300 mm Drying chamber tube, PMMA, for 6 11065093 shelves...
  • Page 91 BÜCHI Labortechnik AG Appendix | 12 Description Order no. Image Rack for 6 heatable shelves 11065103 H 468 mm, Ø 265 mm, shelf distance 30-75 Heatable shelf, aluminum coated, with 11064095 connection cable Ø 219.5 mm, surface area 376 cm² Sample tray, stainless steel 11061439 Ø...
  • Page 92 12 | Appendix BÜCHI Labortechnik AG Description Order no. Image Suction nipple 11065819 For manifold application to create vacuum in sample flasks Ampoule adapter for manifold 11065725 with 19 ampoule connections and cap adapter Manifold valve, natural ruber, with SJ 11062300 29/32 Flask beaker for manifold 100 mL...

  • Page 93: Software

    BÜCHI Labortechnik AG Appendix | 12 Description Order no. Image Manifold flask adapter set 11067334 with 6 adapters, incl. filter paper Manifold flask adapter set, US joint size 11066171 with 12 adapters, incl. filter paper Manifold flask adapter set, US joint size 11067333 with 6 adapters, incl.
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