Bruker RS Service Manual
  1. Manuals
  2. Brands
  3. Bruker Manuals
  4. Laboratory Equipment
  5. RS
  6. Service manual
Bruker RS Service Manual

Bruker RS Service Manual

Nmr spectroscopy
Hide thumbs
Table of Contents

Advertisement

Quick Links

RS
Service Manual
NMR Spectroscopy

Advertisement

Table of Contents
loading
Need help?

Need help?

Do you have a question about the RS and is the answer not in the manual?

Questions and answers

Related Manuals for Bruker RS

Summary of Contents for Bruker RS

  • Page 1 Service Manual NMR Spectroscopy...
  • Page 2 © May 2011: Bruker Corporation Fällanden, Switzerland ZTKS0156 / Z31820 / Rev.: 03 For further technical assistance on the NMR magnet system, please do not hesitate to contact your nearest BRUKER dealer or contact us directly at: BRUKER Corporation Industriestrasse 26 CH - 8117 Fällanden...

  • Page 3: Table Of Contents

    Contact ......................9 Introduction....................11 Safety......................15 Transportation .....................31 Assembling ....................37 Operation......................79 Troubleshooting ..................87 Maintenance....................113 Disassembling ...................121 Appendix ....................133 ZTKS0156 / Z31820 / Rev.: 03...
  • Page 4 ZTKS0156 / Z31820 / Rev.: 03...
  • Page 5 Table of Contents Contact ......................9 Introduction....................11 General Information....................11 Limitation of Liability ....................11 Customer Service....................11 Warranty......................... 11 Copyright ........................ 11 General View......................12 Safety......................15 Approved Persons....................15 Customer Responsibilities..................16 Key Words......................17 Residual Risks......................18 2.4.1 Persons ........................18 2.4.2 Intended Use ......................
  • Page 6 Table of Contents 4.3.1.2 Mounting the Getter Container ................43 4.3.1.3 Checking the Feedthrough Plate ................44 4.3.1.4 Assembling the Nitrogen Tube ................44 4.3.1.5 Assembling the RT Tube ..................46 4.3.1.6 Checking and Fitting the Drop-off Plate..............49 4.3.2 Evacuating the Cryostat ..................
  • Page 7 Table of Contents 6.3.1 After a Quench ..................... 107 6.3.2 Replacement of the Helium Level Sensor ............109 6.3.3 Procedure in case of an alarm signal ..............110 6.3.4 Procedure in case of Cryogenic Refrigerator failure ..........111 Maintenance....................113 Safety ........................113 Cleaning .......................
  • Page 8 Table of Contents ZTKS0156 / Z31820 / Rev.: 03...

  • Page 9: Contact

    Contact Manufacturer: Bruker BioSpin AG Industriestrasse 26 CH-8117 Faellanden Switzerland Phone: +41-44-825-91-11 Fax: +41-44-825-96-96 http://www.bruker.com E-mail: service@bruker.ch Please refer to the Model No., Serial No. and Internal Order No. in all correspondence regarding the NMR system or components thereof. ZTKS0156 / Z31820 / Rev.: 03...
  • Page 10 Contact ZTKS0156 / Z31820 / Rev.: 03...

  • Page 11: Introduction

    • use of not approved spare parts or accessories. Customer Service Technical support is provided by Bruker service via telephone or e-mail. For contact information see page 9 of this document. Warranty The warranty terms can be found in the sales documents of the magnet system and in the Terms and Conditions of Bruker BioSpin AG.

  • Page 12: General View

    Helium flow system Current lead turret Cryogenic Refrigerator Cold Head Helium fill-in turret with helium fill-in port RT bore 10. RT vessel 11. Magnet Stand Figure 1.1: General view RS Cryostat of the Magnet System ZTKS0156 / Z31820 / Rev.: 03...
  • Page 13 The helium vessel is surrounded by a radiation shield (RS) both cooled by a Cryogenic Refrigerator. The outer casing, the room temperature (RT) vessel (10) contains the helium vessel and the radiation shield.
  • Page 14 Introduction ZTKS0156 / Z31820 / Rev.: 03...

  • Page 15: Safety

    (including all necessary knowledge of applicable regulations and regulatory requirements) to perform specific tasks on the magnet system and its components. Bruker Service Personnel are qualified to identify possible hazards and risks and to perform all possible steps to eliminate or minimize these risks.

  • Page 16: Customer Responsibilities

    Safety Customer Responsibilities The customer of the magnet system must obey the security advice and the rules for safety, accident prevention and environmental protection correctly for the magnet systems. Furthermore, the customer is responsible for keeping the magnet system in correct technical condition.

  • Page 17: Key Words

    Safety Key Words DANGER Indicates a hazardous situation which, if not prevented, will result in death or serious injury. WARNING Indicates a hazardous situation which, if not prevented, could result in death or serious injury. CAUTION Indicates a hazardous situation which, if not prevented, may result in moderate or minor injury.

  • Page 18: Residual Risks

    Work must only be carried out by approved persons with applicable qualifications. The necessary qualifications are specified in the beginning of the relevant chapter. • In case of doubt, contact Bruker Service. Contact information see page 9 of this document. 2.4.2 Intended Use The supplied magnet systems is designed and intended for NMR spectroscopy only.

  • Page 19: Safety Devices

    Safety 2.4.3 Safety Devices WARNING Risk of damage to life and limb due to not sufficient safety devices. Several safety devices ensure safe operation of the magnet system. They must always be in correct working condition. Thus: • Do not block safety devices. •...

  • Page 20: Signs And Labels

    Thus: • Maintain signs and labels in a readable state. • Replace damaged or not readable signs and labels immediately. New signs and labels can be obtained from Bruker Service. 2.4.6 Technical Risks Magnetic Field WARNING Risk of damage to life and limb due to high magnetic fields.
  • Page 21 Liquid and gaseous cryogenic agents are extremely cold. Contact with liquid or gaseous cryogenic agents will lead to cold burns. Thus: • Only use cryogenic agents in well ventilated rooms. In case of doubt ask Bruker Service. • Wear an oxygen monitor on the body during service and maintenance work.
  • Page 22 The evaporating helium will displace oxygen. In case of not sufficient ventilation this may result in death by suffocation. Thus • The magnet system site must be well ventilated. In case of doubt contact Bruker Service. • The evaporating gas may resemble smoke. Never pour water on the magnet system.
  • Page 23 Safety Low Temperatures WARNING Risk of injury due to low temperatures of liquids and metal parts. Physical contact with extremely cold liquids and metal parts may cause serious inju- ries. Contact with the skin may cause cold burns. Contact with the eyes may cause blindness.
  • Page 24 Safety Risk of Tilting WARNING Risk of injury due to tilting of the magnet system. The magnet system is very sensitive to lateral forces. It may tilt. Thus: • Do not climb onto the magnet system. • Do not lean items against the magnet system. •...
  • Page 25 Surfaces of the Cryogenic Refrigerator parts may be hot. Skin contact with these surfaces can cause serious injuries. Thus: • Any work at the Cryogenic Refrigerator parts must only be performed by Bruker Service. • Always wear protective gloves while handling Cryogenic Refrigerator parts.

  • Page 26: Personal Protective Equipment

    Safety Personal Protective Equipment The personal protective equipment must be worn at any time while working on the magnet system and to avoid health hazards. Protective Goggles Used to protect the eyes from injury due to flying cold liquids and parts. Protective Gloves Used to protect the hands from injury caused by contact with extremely cold liquids or surfaces and for protection from injury caused by rough edges.

  • Page 27: Description Of Signs And Labels

    Safety Description of Signs and Labels Signs and labels are always related to their immediately vicinity. The following signs and labels are found on the magnet system and in the vicinity. Prohibition sign: No person with pacemakers! People with pacemakers are endangered in the identified area of 0.5 mT (5 Gauss) and are not allowed to enter these areas.

  • Page 28: Safety Devices

    The cryostat of the supplied magnet system is equipped with the following safety devices: Quench Valves One-way Valve of the helium vessel Pressure Relief Valve of the cold head turret Drop-off Plate Figure 2.1: Safety Devices of the RS Cryostat ZTKS0156 / Z31820 / Rev.: 03...
  • Page 29 Safety Quench Valve The quench valves (1) are the safety devices of the helium vessel. They open with a defined pressure. In case of an accidental overpressure in the helium vessel the quench valves will release the pressure smoothly. One-way Valves The one-way valves at the helium flow system (2) keeps air and moisture from entering the helium vessel in case of an accidental underpressure inside the vessel.

  • Page 30: Behavior In Danger And Emergency Situations

    Safety Behavior in Danger and Emergency Situations Preparations • Keep the emergency exits free at all times. • Prepare and maintain an up-to-date list of emergency telephone numbers in the magnet system area. In Case of Emergency • Leave the danger zone immediately. •...

  • Page 31: Transportation

    Transportation Safety The transportation is carried out by Bruker Service or approved persons. However, it may happen that other persons have to receive the delivery of the shipping boxes. In this case it is essential to obey the instructions in this chapter and to inform these persons before.

  • Page 32: Disposal

    Contact Bruker Service before installation. The claim for damage expires after the fixed period. Thus: Report damages to Bruker Service immediately after detection of damage. For contact information see page 9 of this document. ZTKS0156 / Z31820 / Rev.: 03...

  • Page 33: Transportation By Fork Lift / Pallet Jack

    Transportation Transportation by Fork Lift / Pallet Jack Recommended for transporting the boxes to the installation site. Approved Persons: Approved forklift / pallet jack operator Precondition: The fork lift / pallet jack must be approved for the transportation weight (see chapter Appendix, Technical Data). Transport Check the route of transport for the minimal height and width.

  • Page 34: Transportation With A Crane

    Transportation Transportation with a Crane Recommended for lifting the cryostat out of the box. Approved Persons: Approved crane operator Precondition: The crane must be approved for the transportation weight (see chapter Appendix, Technical Data). Attachment Points Exclusively use the marked eyelets (1) as attachment points for the lifting equipment.

  • Page 35: Storing

    Transportation Storing If it is necessary to store the cryostat and accessories before installation obey the following instructions: • Store the boxes in a closed, dry and dust-free room. • Store the boxes upright. • Do not tilt the boxes. •...
  • Page 36 Transportation ZTKS0156 / Z31820 / Rev.: 03...

  • Page 37: Assembling

    Assembling Safety Approved Persons: Bruker Service only WARNING Magnetic Fields (see page 2-20) Cryogenic Agents (see page 2-21) Electricity (see page 2-21) Gas under Pressure (see page 2-22) Spontaneous Ignition and Explosion (see page 2-23) Heavy Weights (see page 2-24) Personal Protective Equipment: •...
  • Page 38 If this is not possible, mount the magnet stand supports. For work at the bottom of the cryostat attach the magnet stand pillars. For inserting the bore tubes or the helium level sensor remove the magnet stand and lower the cryostat. Contact Bruker Service head quarter for further information. ZTKS0156 / Z31820 / Rev.: 03...

  • Page 39: Assembling Workflow

    Assembling Assembling Workflow Mount the Magnet Stand Remove the Insert the getter Prepare the container transportation locks Cryostat Feedthrough Plate Check Assemble Drop off plate Bore Tubes Generate Assemble vacuum valve Pump an Flush Vacuum Evacuate Mount the Cryogenic Cold head Rotary Valve Column Refrigerator Parts...

  • Page 40: Assembling Work

    Assembling Assembling Work 4.3.1 Preparing the Cryostat Remove the top and side panels of the box. Loosen the fixing straps from the cryostat. Lift the cryostat out of its box. WARNING: Heavy Weights Attach the magnet stand to the cryostat. Follow the instructions in the manual of the supplied magnet stand respecting the warnings given there.
  • Page 41 Assembling Removing the upper Transportation Lock Remove the water protection cover (1). Figure 4.4: Removing the Transportation Lock - step 1 Remove the two M 12 nuts (2) and washers. Release the three M 8 nuts (1). Remove the threaded M 8 bolt (3). Release the six M 5 x 14 screws (4).
  • Page 42 Assembling 10. The threaded bar (1) remains until removing the lower transportation lock. Afterwards remove the threaded bar from the top. Figure 4.7: Removing the Transportation Lock - step 4 Removing the lower Transportation Lock 11. Remove three nuts M 8 (2). 12.

  • Page 43: Mounting The Getter Container

    Assembling 4.3.1.2 Mounting the Getter Container Getter is a material, which absorbs helium gas to assure the quality of the vacuum for a long time. After unpacking the getter starts to absorb moisture, reducing the capacity for absorbing helium inside the cryostat. Thus: Unpack getter container shortly before insertion.

  • Page 44: Checking The Feedthrough Plate

    Checking and fitting the Feedthrough Plate 4.3.1.4 Assembling the Nitrogen Tube Bottom of Cryostat Mount the lower RS reduction flange (1) to the radiation shield clips. Figure 4.12: Assembling the Nitrogen Tube - step 1 Top of the Cryostat Mount the upper RS reduction flange (1) to the radiation shield clips.
  • Page 45 Assembling Bottom of the Cryostat Insert and fix the lower nitrogen contact flange (2). Be careful with the super insula- tion. Clean the nitrogen tube with ethanol. Pre- vent any contamination (finger prints, dirt e.g.) to the nitrogen tube surface by using clean gloves.

  • Page 46: Assembling The Rt Tube

    Assembling Top of the Cryostat 10. Mount the upper nitrogen reduction flange (1). 11. Adjust the distance between the nitrogen and helium vessel by inserting the alignment tool into the three check holes of the nitro- gen contact flange (2). 12.
  • Page 47 Assembling Check the alignment of the nitrogen tube and the lower RT reduction flange with a view through the nitrogen tube from the top. If the alignment is not correct, remove the lower RT reduction flange and adjust the alignment with the three lower alignment rods (loosen/tighten).
  • Page 48 Assembling 18. Mount the O-ring (1) to the RT tube. Figure 4.23: Assembling the RT Tube - step 6 19. Grease six M 5 x 12 screws with screw grease. 20. Mount the lower RT closure flange to the end of the RT tube. Push the RT closure flange with the RT tube inside the cryostat.

  • Page 49: Checking And Fitting The Drop-Off Plate

    Assembling 4.3.1.6 Checking and Fitting the Drop-off Plate Open the drop-off plate. Clean the flange of the RT vessel and the O-ring with ethanol. Grease the O-ring with vacuum grease. Close the drop-off plate. Check the drop-off plate is correct assembled.

  • Page 50: Evacuating The Cryostat

    4.3.2 Evacuating the Cryostat For evacuating the cryostat use the Bruker Vacuum Valve, Material No. Z53420. Be careful handling the Vacuum Valve. Tilting of the Vacuum Valve during insertion may damage the O-ring or required edges and surfaces of the Vacuum Valve. Thus pay attention to the axis during insertion of the Vacuum Valve.

  • Page 51: Mounting The Vacuum Valve At Evacuated Cryostat

    Assembling 4.3.2.2 Mounting the Vacuum Valve at Evacuated Cryostat The sealing plug can not be moved until a correct vacuum was applied at the KF 40 flange at the Vacuum Valve. Remove the protection cap of the vacuum flange at the bottom plate (2) of the cryostat. Install the valve stem (10) onto the sealing plug (3) and tighten it slightly.

  • Page 52: Generating The Vacuum

    Assembling 4.3.2.3 Generating the Vacuum Connect the vacuum pumping unit with the KF connector to the KF 40 flange (6) of the Vacuum Valve (2). Use a short pump line with large diameter. Pull out the valve stem (7) of the valve body (2) to release the sealing plug (1) out of the bottom plate (3).

  • Page 53: Rebuilding The Vacuum

    Assembling 4.3.2.4 Rebuilding the Vacuum Connect the vacuum pumping unit to the KF 40 flange (6) of the Vacuum Valve (2). Use a short pump line with large diameter. Generate a vacuum of 10 bar with the roughing pump. Generate a vacuum of less than 5 x 10 bar with a turbo pump.

  • Page 54: Mounting The Cryogenic Refrigerator Parts

    Assembling 4.3.3 Mounting the Cryogenic Refrigerator Parts Remove the top and the front panel of the box of the Cryogenic Refrigerator box like shown. Figure 4.32: Cryogenic Refrigerator Parts - General View 4.3.3.1 Mounting the Cold Head Remove the service flange from the cold head turret.
  • Page 55 Assembling The cold head tubes are sensitive against forces in any direction. Do not remove the cold head insulation. Handle the cold head carefully. Carefully remove the cold head from its box and place it upside down on a clean and stable work surface.

  • Page 56: Mounting The Rotary Valve Column

    Assembling 13. Set the M 5 adjustment screws (1) to the turret flange and tighten them by one turn. The cold head is lifted 0.8 mm. 14. Fix the adjustment screws (1) with the three nuts on top of the cold head flange. 15.
  • Page 57 Assembling Put the base plate (1) upside down. Arrange the three base supports (2) as shown in the figure with the tapered bores (3) on topside. Figure 4.39: Mounting the Rotary Valve Column - step 1 Mount the three base supports to the base plate with three M 8 x 25 screws (1) per sup- port.
  • Page 58 Assembling Adjust the spikes to a height of 30 mm. Fix the spikes with counter nuts. Figure 4.42: Mounting the Rotary Valve Column - step 4 Mount the stand plate (1) from the bottom side with three M 12 x 35 screws with washers (3) from the bottom side.
  • Page 59 Assembling 10. Consider the bottom side of the profile with the two thread inserts (1). Figure 4.45: Mounting the Rotary Valve Column - step 7 11. Put two sliding blocks in each side track of the profile rail. 12. Put the assembled profile rail in-between the stand plates.
  • Page 60 Assembling 21. Mount the flex line positioning disc (1) bet- ween the two screws on the sliding block as shown in the figure. Figure 4.48: Mounting the Rotary Valve Column - step 10 22. Put two sliding blocks (1) into the tracks on both sides of the profile rail.

  • Page 61: Mounting The Rotary Valve And Flex Lines

    Assembling 4.3.3.3 Mounting the Rotary Valve and Flex Lines The Aeroquip® couplings of the connection line, rotary valve and cold head and the flex lines are protected against damage and dust with plugs. Keep them for future transportation in the rotary valve box. Put down the Rotary Valve Column on the clean floor.
  • Page 62 Assembling 10. Clean the thread (1) of the female part of the hose coupling of the flex lines with ethanol. 11. Clean the sealing surface (2) of the female part of the hose coupling with ethanol. Figure 4.55: Mounting the Rotary Valve and Flex Lines - step 4 The thread surfaces of the house couplings have to be greased to reduce friction.
  • Page 63 Assembling 13. Grease the outside thread of the female part behind the cap nut with PTFE-spray. 14. Connect the low pressure flex line to the low pressure socket of the rotary valve (short socket towards front plate). 15. Connect the high pressure flex line to the high pressure socket of the rotary valve (long socket behind front socket).
  • Page 64 Assembling 20. Consider the weld of the noise protection cover as shown in the figure. Figure 4.60: Mounting the Rotary Valve and Flex Lines - step 9 21. Put the noise protection cover (1) over the rotary valve. The weld in the noise protec- tion cover (2) should be on the front side of the rotary valve column (3) facing towards the cryostat.
  • Page 65 Assembling 23. Put the noise protection cap on the top of the rotary valve column. Figure 4.62: Mounting the Rotary Valve and Flex Lines - step 11 24. Attach the insulation tube (1) to the connec- tion line of the rotary valve. Respect the orientation: put the female part towards the rotary valve.
  • Page 66 Assembling 29. Connect the connection line (3) to the cold head (2) following the instructions given in Figures 4.56-4.58 above. Prevent any torque to the connection line during tightening. 30. Loose the cup nut of the connection line with 1/4 rotation. 31.

  • Page 67: Mounting The Compressor

    Assembling 4.3.3.4 Mounting the Compressor For further information refer to the supplied manual of the Cryogenic Refrigerator. The compressor is very sensitive against deviation from the power supply of more than 5 %. The compressor is also very sensitive against deviation from the pressure inside the helium circuit of more than 2 %.
  • Page 68 Assembling Check the compressor pressure at the gauges on the front panel (1). Prepare the compressor location. Ambient temperature must be in the range 7 to 38 °C (45 to 100 °F), compressor must be in a levelled position (within 5°). Connect the low pressure flex line (2) to the compressor.

  • Page 69: Mounting The Helium Level Sensor

    Assembling 4.3.3.5 Mounting the Helium Level Sensor Clean the O-ring (1) of the helium fill-in turret with ethanol. Grease the O-ring (1) with vacuum grease. Clean the sealing surface for the O-ring. Mount the O-ring (1) into the sealing sur- face.

  • Page 70: Mounting The Helium Flow System

    Assembling 4.3.3.6 Mounting the Helium Flow System Clean the O-ring of the current lead turret (1) with ethanol. Grease the O-ring (1) with vacuum grease. Clean the sealing surface for the O-ring. Mount the O-ring (1) into the sealing sur- face.

  • Page 71: Mounting The Temperature Control

    The cryostat has two PT 100 temperature sensors for monitoring. One sensor is con- nected to the BSMS board of the console with supplied VTA MAG-RS unit and Cable Set BSVT, controlled with MICS. The other sensor is connected to the External Temperature Control Unit with the supplied cable.
  • Page 72 Connect the VTA MAG-RS (figure below) with the S1 and the S3 / H1 port at the feed- through plate respecting the number of pins. Connect the VTA MAG-RS to the BSMS board at the console with the supplied BSVT cable.

  • Page 73: Cooling Down From 300 K To 80 K

    Assembling 4.3.4 Cooling down from 300 K to 80 K WARNING Cryogenic Agents (see page 2-21) Gas under Pressure (see page 2-22) Preconditions • Magnet Stand mounted (refer to the manual of the Magnet Stand). • Helium flow system mounted (see chapter ”Mounting the Helium Flow System” on page 4-70).
  • Page 74 Assembling Procedure cooling down the helium vessel: Check the correct setting of the globes inside the quench valves (6). 1 Current lead 2 One way valve 3 Stop valve 4 Cold Head 5 Precooling tube 6 Quench valves Figure 4.78: Helium Flow System during cool down Remove the connector and the tube to the stop valve.
  • Page 75 22. Remove the auxiliary shorting plug out of the helium fill-in turret. 23. Connect the ACD with the current lead (1). 24. Connect the current lead to the Bruker power supply. 25. Check resistance of the magnet coils and shims at room temperature (see Appendix Technical Data).
  • Page 76 Assembling 36. Check at the high and low pressure gauges on the compressor front panel if the mean values are different and if an oscillation of the needles is noticeable. This difference will decrease as the cold head cools down. The typical pressure difference are approximately: 50 Hz compressor: 14.5 to 16.5 bar (210 to 240 PSI) with a 0.34 to 0.7 bar (5 to 10 PSI) amplitude on the needles.

  • Page 77: Cooling Down To 4.2 K

    Assembling 4.3.5 Cooling down to 4.2 K Preconditions • Helium vessel filled with cold nitrogen gas. • Current lead inserted into the current lead turret. • Power supply connected to the current lead. • Upper and lower PT 100 temperature sensors show 80 - 90 K. •...
  • Page 78 Assembling Insert the other side of the helium transfer line into the helium transportation dewar slowly. Fast insertion of the warm transfer line causes evaporation of helium and may cause overpressure inside the transportation dewar. Adjust a pressure of 0.1 - 0.2 bar (1.5 - 3 PSI) at the helium transportation dewar. =>...

  • Page 79: Operation

    Operation Safety Approved Persons: Bruker Service, Approved Customer Personnel WARNING Magnetic Fields (see page 2-20) Cryogenic Agents (see page 2-21) Electricity (see page 2-21) Gas under Pressure (see page 2-21) Personal Protective Equipment: • Protective goggles • Protective gloves •...

  • Page 80: Energizing

    Insert the dry current lead into the current lead turret respecting the correct position. The current lead can only be inserted in one position. Connect the main power cable and control cables of the Bruker Power Supply with the current lead.

  • Page 81: Energizing Procedure

    14. Set the current to 0 A at the Bruker Power Supply. 15. Wait until the Bruker Power Supply shows 0 A. 16. Remove the main power cable from the Bruker Power Supply and short-circuit it. 17. The shim automatic must remain switched ON for 12 h after energizing.

  • Page 82: Cycling Procedure

    => Main heater switch is closed. Main coil is now persistent. Continue Energizing Set the current of the Bruker Power Supply to the value of the coil current. Wait until the current of the Bruker Power Supply is reached. Open the main heater switch.

  • Page 83: Shimming Procedure

    Shimming Procedure Check the time between cycling was at least 12 hours. Check the settings (current and inductivity) of the Bruker Power Supply. The current must be the same for the shim coil and the Bruker Power Supply. Switch the shim heater ON.

  • Page 84: Removing The Current Lead

    Technical Data of the supplied User Manual). Refill the helium vessel if necessary. Insert the auxiliary shorting plug into the helium fill-in turret. Check the current at all Bruker Power Supply cables is 0 A. Switch the Bruker Power Supply OFF.

  • Page 85: Set Into Operation

    Operation Set into Operation Mount the further equipment of the supplied magnet system respecting their manuals. Set the magnet stand into operation by switching the pneumatic controller to UP position. Figure 5.3: Start the Magnet Stand For any work at the magnet system like main- tenance or refill of helium stop the magnet stand by switching the pneumatic controller to DOWN position.
  • Page 86 Operation ZTKS0156 / Z31820 / Rev.: 03...

  • Page 87: Troubleshooting

    Troubleshooting Troubleshooting must be performed only with approved qualification. In case of doubts or problems not specified in the following list contact Bruker Service immediately. For contact information see page 9 of this manual. Safety Approved Persons Bruker Service, Approved Customer Personnel...

  • Page 88: Problem

    6.2.2 During Assembling Indicator Possible reason Solution Ceiling height too Site does not meet Choose another site that Bruker Service low for assembling the required condi- meets the required condi- on magnet stand. tions. tions. Ceiling height too Site does not meet...
  • Page 89 For this work the bottom plate has to be removed. Check the suspension tubes of the helium vessel are not broken. Install the safety device for fall protection (not supplied). Contact Bruker Service Headquarter for further information.

  • Page 90: During Cool Down

    Troubleshooting 6.2.3 During Cool Down Indicator Possible reason Solution Precooling with Empty transport Refill or change transport Bruker Service liquid nitrogen conti- dewar. dewar. nue too slowly. Transfer pressure Increase transfer pressure Bruker Service too low. slightly. Transport dewar is...
  • Page 91 Continued from page before Indicator Possible reason Solution • Do not remove pumping RT vessel becomes Vacuum is broken or Bruker Service unit until liquid helium fill- cold and wet. less than in is finished. 1 x 10 bar. •...
  • Page 92 Continued from page before Indicator Possible reason Solution Warm up the magnet coil Nitrogen ice in the Pumping intervals Bruker Service with warm helium gas helium vessel. during pumping and through the precooling flushing were too tube until the whole coil is long and remaining warmer than 90 K.
  • Page 93 Indicator Possible reason Solution The zero reading of The helium level Check the connection in the Bruker Service the helium level sen- sensor is not con- helium fill-in turret between sor can not be adju- nected correctly with helium level sensor and con-...

  • Page 94: During Energizing And Shimming

    During Energizing and Shimming Indicator Possible reason Solution The current lead can The connector is Carefully remove the ice with Bruker Service not be inserted covered with ice. warm helium gas. completely into the (frozen moisture or To remove small ice spots use connector.
  • Page 95 Continued from page before Indicator Possible reason Solution Shorting plug cannot The connector is Carefully remove the ice with Bruker Service be removed. covered with ice warm helium gas. To remove (frozen moisture or small ice spots use the dip- nitrogen ice).

  • Page 96: During Operation Of The Magnet Stand

    Repeat shimming. 6.2.5 During Operation of the Magnet Stand In case of doubt contact Bruker Service and refer to the supplied manual of the Magnet Stand Indicator Possible reason Solution The NMR spectrum...
  • Page 97 It must be in the range Customer low. of 5 to 8 bar (70 to 112 psi). Personnel If the problem is still not Approved solved, contact Bruker Customer Service. Personnel The magnet system Stop the pneumatic isolators. Bruker Service...

  • Page 98: During Standard Operation

    Approved decrease to zero. pressure is increa- Watch helium boil off daily. Customer sing. Personnel The helium flow Contact Bruker Service Approved system is covered immediately! Do not try to Customer with ice. remove ice of the helium flow Personnel...
  • Page 99 The radiation baffles Insert the radiation baffles into Bruker Service are not inserted in the current lead turret. the current lead turret. RS temperature Cryogenic Refrigera- See chapter ”During Opera- Approved shield to high. tion not sufficient. tion of the Cryogenic Refri- Customer gerator”...
  • Page 100 Indicator Possible reason Solution WARNING: Low Temperature Not correct helium Helium level sensor Replace helium level sensor Bruker Service level warning out of defective. (see chapter ”Replacement supplied NMR soft- of the Helium Level Sensor” ware. on page 6-109) Helium level at con-...

  • Page 101: During De-Energizing And Warming Up

    During De-energizing and Warming up Indicator Possible reason Solution The magnet system The helium level was Refill helium at least to the Bruker Service quenches during de- too low for de-ener- minimum allowed level (see energizing. gizing. Appendix Technical Data).

  • Page 102: During Operation Of The Cryogenic Refrigerator

    Troubleshooting 6.2.8 During Operation of the Cryogenic Refrigerator In the case of a complete failure of the Cryogenic Refrigerator, the helium contained in the helium vessel will be sufficient to cool the magnet for at least 3 days. If solving the issue takes longer, it is necessary to refill helium at all time (refer to supplied Refill Manual).
  • Page 103 Connect motor cord, if necessary. Remount the noise pro- tection cover. If the problem is still not Approved solved, contact Customer Bruker Service. Personnel Aeroquip® connec- Tighten the Aeroquip® Bruker Service tors of the flex lines connectors correctly. not correctly tigh- tened at the com- pressor.
  • Page 104 Troubleshooting Continued from page before Indicator Possible reason Solution Continue of: Aeroquip® connec- Tighten the Aeroquip® Bruker Service Compressor is tors of the flex lines connectors correctly. operating, but no tightened not cor- pressure fluctuation rectly at the rotary visible (needles at valve.
  • Page 105 Customer schedule (see chapter ”Main- Personnel tenance Timetable” on page 7-114). If the problem is still not Approved solved, contact Bruker Customer Service. Personnel WARNING: Hot Surfaces Connection line Tighten the Aeroquip® Bruker Service between rotary valve connectors correctly.
  • Page 106 Troubleshooting Continued from page before Indicator Possible reason Solution Continue of: Cold head Remount the cold head. Bruker Service Compressor is contaminated. Pump and flush the cold operating, cryogenic head. See chapter ”Pro- refrigeration not cedure in case of Cryogenic sufficient.

  • Page 107: Troubleshooting Work

    Check the nitrogen turrets for icing. Start the refill with liquid helium as soon as possible after the quench (within one hour after the quench; refer to the supplied refill manual). Contact Bruker Service immediately. ZTKS0156 / Z31820 / Rev.: 03...
  • Page 108 Set the sense voltage to 0 V. Set the charge current to 0 A. Switch off the shim automatic. Close all superconducting switches. Switch the Bruker Power Supply OFF. Remove the current lead. Insert the shorting plug. Close the current lead turret with the cap immediately.

  • Page 109: Replacement Of The Helium Level Sensor

    2-23) Slippage (see page 2-23) Check sufficient room height for removing the helium level sensor. Contact Bruker Service headquarter in case of not. Prepare the new helium level sensor. Disconnect the connector at the helium fill-in turret (3). Release the black nut (2) from the helium fill-in turret (1).

  • Page 110: Procedure In Case Of An Alarm Signal

    If the temperature of the radiation shield exceeds the set maximum allowed temperature, an alarm will warn the operator (audible from the External Temperature Control Unit, visible from the External Temperature Control Unit and the console via MICS). Follow this procedure to fix the issue before contacting Bruker Service. Note: •...

  • Page 111: Procedure In Case Of Cryogenic Refrigerator Failure

    After restarting the Cryogenic Refrigerator, at least two days are necessary to recover the previous state of the magnet system. If the temperature and helium boil off does not decrease in the next two days call Bruker Service. Figure 6.5: Temperature profile during Cryogenic Refrigerator failure ZTKS0156 / Z31820 / Rev.: 03...
  • Page 112 Troubleshooting ZTKS0156 / Z31820 / Rev.: 03...

  • Page 113: Maintenance

    Maintenance Maintenance must be performed only with approved qualification. In case of doubt contact Bruker Service. For contact information see page 9 of this document. Safety WARNING Magnetic Fields (see page 2-20) Cryogenic Agents (see page 2-21) Electricity (see page...

  • Page 114: Cleaning

    Refer to the supplied manual of the cryogenic refrigera- tor. Contact Bruker Service if values are different. Water cooled option only: • Check the proper operation of the water cooling unit.
  • Page 115 Continued from page before Interval Device Work • Replace the rotary valve. Refer to 17.520 hours Cryogenic Bruker Service chapter ”Replacement of the (2 years) Refrigerator Rotary Valve and the Cold Head” on page 7-118. • Replace the adsorber of the com- pressor.

  • Page 116: Maintenance Work At The Cryogenic Refrigerator

    Frequently needed spare parts Figure 7.1: Service Kit Optionally: Tool tray The Tool Tray fits on each of the RS towers. It is recommended for depositing tools and parts necessary for work on top of the cryostat to avoid falling objects.

  • Page 117: Flex Lines

    Maintenance Optionally: Cold Head Stand The Cold Head Stand is recommended for cold head service to avoid contact with cold or hot surfaces. The Cold Head Stand can also be used as a step to reach the top of the cryostat during assembling and service.

  • Page 118: Replacement Of The Rotary Valve And The Cold Head

    Maintenance 7.4.3 Replacement of the Rotary Valve and the Cold Head For removing the cold head an applicable step is necessary. This step must be stable, not too high and without pitfalls. Do not disconnect the cable from the S2 port at the feedthrough plate during the entire procedure.
  • Page 119 Maintenance Release the flex lines from the rotary valve (1). Disconnect the motor cord from the rotary valve. Remove the four M 6 x 35 screws at the front plate (2). Remove the insulation tube from the con- nection line. 10.
  • Page 120 Maintenance 19. Mount the service flange immediately on the cold head turret to prevent moisture from entering. 20. Restore the cold head carefully back in the supplied box. Figure 7.10: Replacing the Cold Head - step 4 21. Mount the new cold head following the instructions given in chapter ”Mounting the Cold Head”...

  • Page 121: Disassembling

    Disassembling Safety Approved Persons: Bruker Service only WARNING Magnetic Fields (see page 2-20) Cryogenic Agents (see page 2-21) Electricity (see page 2-21) Gas under Pressure (see page 2-22) Spontaneous Ignition and Explosion (see page 2-23) Heavy Weights (see page 2-24) Personal Protective Equipment: •...
  • Page 122 Current Lead • Shorting plug tool • Precooling tube • Liquid nitrogen blow out tube • Bruker Vacuum Valve (Material No. Z53420) • Vacuum pumping unit • Flow Device (Material No. Z57350) • Clean gloves • Boxes for transportation (Cryostat box, Magnet Stand box, Cryogenic Refrigerator Boxes) •...

  • Page 123: Disassembling Work

    Start the shim automatic (Z and Z ON). Set the final main coil current according to the energizing assignment. 10. Wait until the current is reached at the Bruker Power Supply. 11. Open the main heater switch. 12. Set the first current of the de-energizing assignment.

  • Page 124: Warming Up From 4.2 K To 300 K

    Disassembling 8.2.2 Warming up from 4.2 K to 300 K Procedure: Check the helium flow during the entire warm up procedure. Check the helium flow systems and the turrets are not blocked with ice formations. If necessary remove blockage with warm helium gas. If available connect a helium recovery system to the stop valve of the helium flow system.

  • Page 125: Breaking The Vacuum

    Disassembling 8.2.3 Breaking the Vacuum Procedure: Check with the precooling tube if there is liquid helium in the helium vessel. If necessary blow out the liquid helium with warm helium gas through the precooling tube. Check the helium flow for at least three hours after breaking the vacuum.

  • Page 126: Removing Of The Helium Flow System

    Disassembling 14. The KF 40 connection at the vacuum valve will open, if the RT vessel of the cryostat is at atmospheric pressure. 15. Wait until the RT Bore is no longer cold and wet (approximately 3 - 5 days). 16.

  • Page 127: Removing Of The Rt Tube And The Nitrogen Tube

    Disassembling Prevent any contamination to the sealing surfaces of the flex lines and the connection line. Use the supplied cups to protect the sealing surfaces. Follow the procedure described in chapter ”Mounting the Rotary Valve Column” on page 4-56 in reverse order. Lift the cold head out of the turret by turning the three adjustment screws until the top O-Ring of the turret sealing becomes visible.
  • Page 128 Prevent any damage (scrat- ches, buckling) to the nitrogen tube by carefully handling it. Restore it in its original box. Remove the RS reduction flange. Figure 8.4: Disassembling the Nitrogen Tube - step 1 Bottom of the Cryostat Remove the bottom RT closure flange and the bottom RT reduction flange.

  • Page 129: Assembling Of The Transportation Lock

    Disassembling 8.2.7 Assembling of the Transportation Lock Bottom of Cryostat Insert brass nut (2) into the transport bottom plate (1). Attach the bottom fixture flange (3) onto the brass nut (2). Insert threaded bar (4) from the top. Screw threaded bar (4) into the brass nut (2).
  • Page 130 Disassembling 13. Mount the transport top plate (5). 14. Fix the transport top plate (5) with six M 5 x 12 screws (4). 15. Insert and fix the threaded bolts (3). 16. Fix the three nuts M 8 (1). 17. Fix the two nuts M 12 (2) with washers. Figure 8.9: Assembling the transportation lock - step 3 18.

  • Page 131: Remount The Magnet Stand

    Disassembling 8.2.8 Remount the Magnet Stand Procedure: Follow the instructions according to the manual of the Magnet Stand respecting the warnings given there. Restore the parts of the magnet stand in their original boxes. 8.2.9 Prepare the Cryostat for Transportation Procedure: Put the cryostat in its original box.
  • Page 132 Disassembling ZTKS0156 / Z31820 / Rev.: 03...

  • Page 133: A Appendix

    Appendix Warning Signs Figures Tables Glossary / Abbreviations Technical Data Index ZTKS0156 / Z31820 / Rev.: 03...
  • Page 134 Appendix ZTKS0156 / Z31820 / Rev.: 03...

  • Page 135: Warning Signs

    Appendix Warning Signs Danger Key Word and Symbol .................. 17 Warning Cryogenic Agents ..................21 Electricity ....................... 21 Gas under Pressure ..................22 Heavy Weights ....................24 Intended Use ....................18 Key Word and Symbol .................. 17 Low Temperatures ..................23 Magnetic Field ....................
  • Page 136 Appendix ZTKS0156 / Z31820 / Rev.: 03...

  • Page 137: Figures

    Appendix Figures Figure 1.1: General view RS Cryostat of the Magnet System........ 12 Figure 2.1: Safety Devices of the RS Cryostat............28 Figure 3.1: Packaging (without surrounding panels)..........31 Figure 3.2: Transportation by forklift ..............33 Figure 3.3: Attachment points for lifting equipment..........34 Figure 4.1:...
  • Page 138 Appendix Figure 4.29: Generating the Vacuum ............... 52 Figure 4.30: Rebuilding the Vacuum ................ 53 Figure 4.31: Removing the Vacuum Valve............... 53 Figure 4.32: Cryogenic Refrigerator Parts - General View........54 Figure 4.33: Mounting the Cold Head - step 1 ............54 Figure 4.34: Mounting the Cold Head - step 2 ............
  • Page 139 Appendix Figure 4.65: Mounting the Noise Protection Cover - step 1 ........66 Figure 4.66: Mounting the Noise Protection Cover - step 2 ........66 Figure 4.67: Mounting the Noise Protection Cover - step 3 ........66 Figure 4.68: Mounting the Compressor - step 1............67 Figure 4.69: Mounting the Compressor - step 2............
  • Page 140 Appendix Figure 8.2: Disassembling the RT Tube - step 1..........127 Figure 8.3: Disassembling the RT Tube - step 2..........127 Figure 8.4: Disassembling the Nitrogen Tube - step 1 ......... 128 Figure 8.5: Disassembling the Nitrogen Tube - step 2 ......... 128 Figure 8.6: Disassembling the Nitrogen Tube - step 3 .........

  • Page 141: Tables

    Appendix Tables Table 7.1: Maintenance Timetable - part 1 ............114 Table 7.2: Maintenance Timetable - part 2 ............115 Table A.1: Environmental conditions ..............145 Table A.2: Helium Level Sensor................. 146 Table A.3: Characteristic Values PT 100............147 Table A.4: Characteristic Values IBT..............148 ZTKS0156 / Z31820 / Rev.: 03...
  • Page 142 Appendix ZTKS0156 / Z31820 / Rev.: 03...

  • Page 143: Glossary / Abbreviations

    The superconducting magnet inside the cryostat is energi- zed. Abbreviations Description Automatic Cooling Device BSMS Bruker Smart Magnetcontrol System BSVT Bruker Smart Variable Temperature System MICS Magnet Information and Control System; Bruker Corporation registered trademark Nuclear Magnetic Resonance Radiation Shield Room Temperature; used for room temperature level...
  • Page 144 Appendix ZTKS0156 / Z31820 / Rev.: 03...

  • Page 145: Technical Data Usr Service

    Technical Data RS Service Technical Data USR Service For further Technical Data please refer to the supplied manual of the Magnet System for the User. Environmental conditions Value Unit Minimum surrounding temperature °C Maximum surrounding temperature °C Maximum relative humidity up to 31 °C Maximum relative humidity between 31 °C and 40 °C...
  • Page 146 Technical Data RS Service Helium Level Sensor The helium level sensor is inserted in the helium fill-in turret. Helium Level Sensor Material No. Value Unit Level Sensor Type Z58114 1300/690 Overall length 1300 Active length Calibration 0 %, Calibration resistor Z28630 Ω...
  • Page 147 Technical Data RS Service Temperature Sensors The temperature sensors (PT 100 and IBT) will be used to monitor the temperature of the magnets during cooling and warming up of the magnet system. PT 100 Measure the resistance with a maximum current of 1 mA.
  • Page 148 Technical Data RS Service IBT Carbon Resistor Measure the Resistance with a maximum current of 0.1 mA. Temperature Unit Resistance Unit Room Temperature Ω Liquid Nitrogen Ω Ω Ω Ω Ω Ω Ω Liquid Helium Ω Table A.4: Characteristic Values IBT Figure A.3:...
  • Page 149 Technical Data RS Service Wiring Diagramm Temperature Sensors View from outside Feedthrough Plate Figure A.4: Wiring Diagramm Temperature Sensors ZTKS0156 / Z31820 / Rev.: 03...
  • Page 150 Technical Data RS Service This side is intentionally left blank. ZTKS0156 / Z31820 / Rev.: 03...
  • Page 151 Technical Data RS Service Magnet System Report Helium level Helium flow T RS Date, Time Signature [ml/h] ZTKS0156 / Z31820 / Rev.: 03...
  • Page 152 Technical Data RS Service Magnet System Report Helium level Helium flow T RS Date, Time Signature [ml/h] ZTKS0156 / Z31820 / Rev.: 03...

  • Page 153: Index

    Index Index Alignment ..........65 Alignment Tool ........45 Attachment Points ........34 Automatic Cooling Device ....73 BSMS ............71 BSVT ............71 Cleaning Staff ........... 16 Cold Head ......... 12 Complaint Process ........32 Compressor ........12 Connection Line ........12 Cryogenic Agents .......20 Cryogenic Refrigerator ....
  • Page 154 Rotary Valve Column ......12 Safety Devices .........28 Safety Shoes ..........26 Service Kit ..........116 Shock Watch ..........32 Slippage ...........23 Spontaneous Ignition ........23 Tilt Watch ..........32 Tilting ............24 Vacuum Valve ..........50 VTA MAG-RS ...........71 Warranty ...........11 ZTKS0156 / Z31820 / Rev.: 03...
  • Page 155 New release after re-design of the cryostat and release of the 2010 Rotary Valve Column; using a new specific form of the Corpo- rate Guide Line and the definition from the Bruker documenta- tion group. November New release with a new order of content.
  • Page 156 ZTKS0156 / Z31820 / Rev.: 03...
  • Page 157 Bruker, your solution partner Bruker provides a world class, market leading range of ana- lytical solutions for your molecular and material research needs. Our solution-oriented approach enables us to work closely with you to identify your specific needs and deter- mine the best solution package for you from our comprehen- sive range.

Table of Contents

Save PDF