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ZTKS0156 / Z31820 / Rev.: 03

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.
Do not switch off the External Temperature Control Unit.

Figure 7.5:

Replacing the Rotary Valve - step 1

Stop the Cryogenic Refrigerator.
The temperature will increase and the
External Temperature Control Unit will give
an audible and a visual alarm.

Stop the audible alarm of the External Tem-
perature Control Unit (refer to the supplied
manual of the External Temperature Control
Unit).

Remove the noise protection cover from the
cold head.

Release the connection line (2) from the
cold head (1).

Figure 7.6:

Replacing the Rotary Valve - step 2

Remove the noise protection cap on the top
of the rotary valve column.

Содержание RS

Страница 1: ...NMR Spectroscopy Service Manual RS ...

Страница 2: ...ademarks or registered trademarks of their respective holders 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 Switzerland Phone 41 44 825 91 11 Fax 41 44 825 96 96 E mail se...

Страница 3: ...3 ZTKS0156 Z31820 Rev 03 0 Contact 9 1 Introduction 11 2 Safety 15 3 Transportation 31 4 Assembling 37 5 Operation 79 6 Troubleshooting 87 7 Maintenance 113 8 Disassembling 121 A Appendix 133 ...

Страница 4: ...4 ZTKS0156 Z31820 Rev 03 ...

Страница 5: ...arts 19 2 4 5 Signs and Labels 20 2 4 6 Technical Risks 20 2 5 Personal Protective Equipment 26 2 6 Description of Signs and Labels 27 2 7 Safety Devices 28 2 8 Behavior in Danger and Emergency Situations 30 2 9 Fire Department Notification 30 3 Transportation 31 3 1 Safety 31 3 2 Packaging 31 3 2 1 Disposal 32 3 3 Transport Inspection 32 3 4 Transportation by Fork Lift Pallet Jack 33 3 5 Transpor...

Страница 6: ...Mounting the Compressor 67 4 3 3 5 Mounting the Helium Level Sensor 69 4 3 3 6 Mounting the Helium Flow System 70 4 3 3 7 Mounting the Temperature Control 71 4 3 4 Cooling down from 300 K to 80 K 73 4 3 5 Cooling down to 4 2 K 77 5 Operation 79 5 1 Safety 79 5 2 Energizing 80 5 2 1 Inserting the Current Lead 80 5 2 2 Energizing Procedure 81 5 2 3 Cycling Procedure 82 5 2 4 Shimming Procedure 83 5 ...

Страница 7: ...he Rotary Valve and the Cold Head 118 8 Disassembling 121 8 1 Safety 121 8 2 Disassembling Work 123 8 2 1 De energizing 123 8 2 2 Warming up from 4 2 K to 300 K 124 8 2 3 Breaking the Vacuum 125 8 2 4 Removing of the Helium Flow System 126 8 2 5 Removing the Cryogenic Refrigerator Parts 126 8 2 6 Removing of the RT Tube and the Nitrogen Tube 127 8 2 7 Assembling of the Transportation Lock 129 8 2 ...

Страница 8: ...8 ZTKS0156 Z31820 Rev 03 Table of Contents ...

Страница 9: ...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 ...

Страница 10: ...10 ZTKS0156 Z31820 Rev 03 Contact ...

Страница 11: ...t the current state of the technology The manufacturer assumes no liability for damages resulting from non compliance with the instructions and all applicable documentation use for purposes not intended not sufficiently approved persons arbitrary changes or modifications and use of not approved spare parts or accessories 1 3 Customer Service Technical support is provided by Bruker service via tele...

Страница 12: ...igerator Compressor noise protection cover optionally 2 Cryogenic Refrigerator Flex Lines 3 Rotary Valve RV covered by the Rotary Valve Column RVC 4 Connection Line 5 Helium flow system 6 Current lead turret 7 Cryogenic Refrigerator Cold Head 8 Helium fill in turret with helium fill in port 9 RT bore 10 RT vessel 11 Magnet Stand ...

Страница 13: ...build the interface of the helium vessel to the outside The current lead turret 5 builds the interface for energizing the magnet coil and for diagnostic The helium fill in turret 8 with access to the siphon and connecting plug for the helium level sensor is used to fill the helium vessel It is marked with a yellow label The helium flow system 6 connects the two helium turrets The Cryogenic Refrige...

Страница 14: ...14 ZTKS0156 Z31820 Rev 03 Introduction ...

Страница 15: ...sult of professional training by Bruker Service Personnel experience and knowledge of applicable regulations these persons are qualified to perform the specific tasks on the magnet system and its components assigned to them in this manual Approved Customer Personnel are qualified to identify possible hazards and risks associated with the tasks assigned to them and to perform all possible steps to ...

Страница 16: ...em and how to react in the event of an incident The customer must clearly define the responsibilities for operation and main tenance The customer must ensure that all employees working with the magnet system have read and understood the manual The customer has to provide the necessary personal protective equipment for his employees The customer has to instruct his employees at regular intervals on...

Страница 17: ...s 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 NOTICE Hazard which could result in property damage ...

Страница 18: ... 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 WARNING Risk of damage to life and limb by incorrect use of the magnet system Incorrect use of the magnet system can lead to life threatening situation...

Страница 19: ...y devices Do not remove safety devices Check the operational reliability of the safety devices before working on the magnet system WARNING Risk of injury and property damage from using incorrect or defective spare parts and accessories Incorrect or defective spare parts can cause serious injuries They may cause damaging malfunctioning and the destruction of the magnet system Thus Only use original...

Страница 20: ... life threatening for people with pacemakers or metal implants Ferromagnetic tools in the magnetic field are significantly hazardous Disks and electronic devices may be damaged Duration of exposure 8 h day above the limit of 200 mT can cause damage to health Thus Mark the magnetic field of more than 0 5 mT 5 Gauss before start up The workplace must be outside the 0 5 mT area Keep people with pacem...

Страница 21: ...quid 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 Prevent any skin contact with liquid or gaseous cryogenic agents WARNING Risk of damage to life and limb due to ...

Страница 22: ... cryostat may get sealed off due to ice formation inside the helium or the nitrogen turrets in case of non compliance with the instruction given in this manual This may lead to overpressure and damage of the helium or the nitrogen vessel Manipulations of components with gas under pressure may lead to injury and property damage Thus In case of icing inside the helium or the nitrogen turrets contact...

Страница 23: ...ure sensitive components such as O rings from contact with liquid cryogenic agents WARNING Risk of injury from spontaneous ignition and explosion caused by liquid oxygen Pure oxygen condenses on extremely cold metal pieces Together with oil it may ignite spontaneously In case of fire the pure oxygen may cause an explosion Thus Do not smoke near the magnet system Do not use open flames near the mag...

Страница 24: ...our own WARNING Risk of damage to life and limb caused from heavy weights Lifting heavy weights is life threatening due to falling or moving parts Thus Do not stay or work under a lifted magnet system All used lifting equipment must be approved to carry the weight see Appendix Technical Data Do not use damaged lifting equipment Do not use lifting equipment without updated check tag Lifting only wi...

Страница 25: ...Do not move the boxes arbitrarily Pay attention to all symbols on the boxes Pay attention to sharp edges and spikes of boxes and parts by using protective gloves while moving Move the boxes in an upright position Do not tilt the boxes Prevent crossing thresholds even if they are only a few millimeters high Clean the transportation way before transporting the box Unpack shortly before assembling Th...

Страница 26: ...xtremely cold liquids or surfaces and for protection from injury caused by rough edges Protective Clothes Used to protect the body from injury caused by contact with extremely cold liquids or surfaces and for protection from wounds Safety Shoes Used to protect the feet from injury from falling of heavy objects An anti slip sole protects from injury caused by slipping and falling on slippery floor ...

Страница 27: ...ed in the identified area of 0 5 mT 5 Gauss and are not allowed to enter these areas Prohibition sign No watches or electronic devices Watches and electronic devices may be damaged in the identified area of 0 5 mT 5 Gauss Prohibition sign No credit cards or other magnetic memory Credit cards and magnetic memory may be damaged in the identified area of 0 5 mT 5 Gauss Prohibition sign Do not touch D...

Страница 28: ... The cryostat of the supplied magnet system is equipped with the following safety devices Figure 2 1 Safety Devices of the RS Cryostat 1 Quench Valves 2 One way Valve of the helium vessel 3 Pressure Relief Valve of the cold head turret 4 Drop off Plate ...

Страница 29: ...el Pressure Relief Valve The pressure relief valve 3 is the safety device of the cold head turret It opens with a defined pressure In case of an accidental overpressure in the cold head turret the pressure relief valve will release the pressure smoothly Drop off Plate The drop off plate 4 is a safety device of the RT vessel If the vacuum breaks the drop off plate will open In case of an accidental...

Страница 30: ...d Burns Help the injured persons to lie down comfortably in a warm room Loosen all clothing which could prevent blood circulation in the injured area Pour large quantities of warm water over the affected parts Cover the wound with dry and sterile gauze In case of contact of liquid cryogenic agents with the eyes rinse thoroughly with clean water Call for medical assistance 2 9 Fire Department Notif...

Страница 31: ...ersons before 3 2 Packaging WARNING Heavy Weights see page 2 24 CAUTION Transportation see page 2 25 Figure 3 1 Packaging without surrounding panels The cryostat is supplied in a wooden box on a pallet It is secured inside with straps against tilting and moving Accessories such as the flow systems level sensors and bore tubes are in the side compart ment of the box The Cryogenic Refrigerator parts...

Страница 32: ...itors Shock Watch Tilt Watch on the boxes shows if the boxes were kicked or tilted during transportation Checks Shock Watch Follow instructions on the label Tilt Watch Follow instructions on the label In case of damage Accept delivery with reservation Make a documentation of all observable damage and add it to the transport documents Start complaint process Contact Bruker Service before installati...

Страница 33: ...n by forklift 1 Check the route of transport for the minimal height and width 2 Check sufficient floor capacity on the route of transport In case of doubt ask a stress analyst 3 Check sufficient carrying capacity while using an elevator 4 Position the forks between the bars of the box as shown in the figure Make sure the side towards the operator is the one with the labels on it 5 Make sure the fo...

Страница 34: ... 1 Exclusively use the marked eyelets 1 as attachment points for the lifting equipment 2 Use all eyelets for the lifting equipment 3 Follow the instructions on the label on the top of the cryostat This label gives important information about correct attachment and transportation 4 Check for correct fastening of the lifting equipment before lifting the cryostat 5 Make sure that any movement of the ...

Страница 35: ... 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 Do not unpack the supplied boxes Prevent mechanical vibrations to the boxes Storage temperature 5 40 C Storage humidity less than 50 23 C ...

Страница 36: ...36 ZTKS0156 Z31820 Rev 03 Transportation ...

Страница 37: ...pment Protective goggles Protective gloves Protective clothes Safety shoes Portable oxygen monitor and alarm 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 ...

Страница 38: ... Lines PTFE spray i Check if there is sufficient free space above the cryostat to mount the bore tubes and the helium level sensor If not sufficient mount the cryostat according following instructions at a place with sufficient ceiling height remove the magnet stand after assembling and transport the cryostat to the site using the transport box If this is not possible mount the magnet stand suppor...

Страница 39: ...ostat Assemble vacuum valve Remove vacuum valve Precool 80K Cooldown 4 2K Switch on Cryogenic Refrigerator Energize Magnet Cycle Shim Magnet Remove current lead Insert Current Lead Remove the transportation locks Insert the getter container Sub Procedure different from Standard NMR Standard NMR Procedure Standard NMR Sub Procedure KEY Procedure different from Standard NMR Start Monitoring Pump an ...

Страница 40: ...top and side panels of the box 2 Loosen the fixing straps from the cryostat 3 Lift the cryostat out of its box 4 Attach the magnet stand to the cryostat Follow the instructions in the manual of the supplied magnet stand respecting the warnings given there WARNING Heavy Weights Figure 4 3 Overview Transportation Locks Overview positions of the transportation lock colored blue ...

Страница 41: ... Removing the Transportation Lock step 2 2 Remove the two M 12 nuts 2 and washers 3 Release the three M 8 nuts 1 4 Remove the threaded M 8 bolt 3 5 Release the six M 5 x 14 screws 4 6 Remove the transport top plate 5 Figure 4 6 Removing the Transportation Lock step 3 7 Remove the short top fixture flange 1 8 Remove the intermediate flange 2 9 Remove the top fixture flange 3 ...

Страница 42: ...nsportation Lock step 4 10 The threaded bar 1 remains until removing the lower transportation lock Afterwards remove the threaded bar from the top Figure 4 8 Removing the Transportation Lock step 5 11 Remove three nuts M 8 2 12 Remove the threaded bolts M 8 1 13 Loosen the twelve screws M 5 x 12 at the lower transportation lock plate 3 Secure the lower transportation lock plate against falling 14 ...

Страница 43: ...etter container Wear clean gloves for inserting to prevent contamination Figure 4 9 Mounting the Getter Container 1 Check the clamp 2 retighten it if neces sary 2 Unpack the getter containers from their tin 3 Insert the getter container 1 into the clamps 2 respecting the orientation as shown flat side of the getter container atop 4 Check the distance to the radiation shield 5 Start generating vacu...

Страница 44: ...top opening of the cryostat that all connectors at the inner side of the feedthrough plate are plugged and the cables are not stressed or bent 2 Check the feedthrough plate is correct assembled Figure 4 12 Assembling the Nitrogen Tube step 1 1 Mount the lower RS reduction flange 1 to the radiation shield clips Figure 4 13 Assembling the Nitrogen Tube step 2 2 Mount the upper RS reduction flange 1 ...

Страница 45: ...e from the top Figure 4 15 Assembling the Nitrogen Tube step 4 6 Check the distance between the nitrogen and helium vessel by inserting the alignment tool 1 into the three check holes of the nitrogen contact flange 2 The insertion extraction of the alignment tool 1 should be smooth Figure 4 16 Assembling the Nitrogen Tube step 5 7 If the alignment tool does not insert extract smoothly remove the n...

Страница 46: ...per insulation with polyester tape without taping the insulation to other surfaces Figure 4 18 Assembling the RT Tube step 1 1 Check the O ring slot 1 of the lower RT reduction flange 2 Remove scratches if necessary 3 Clean the O ring slot with ethanol 4 Clean the O ring with ethanol 5 Grease the O ring with vacuum grease and place it into the O ring slot Prevent contamination with dust and dirt F...

Страница 47: ...tube carefully with ethanol Prevent any contamination finger prints dirt e g to the RT tube surface by using clean gloves Prevent any damage scratches buckling to the RT tube by handling it carefully 13 Insert the RT tube from the top In case the RT tube is insulated handle it carefully and prevent damage to the insula tion In case the RT tube is not symmetrical respect the correct position Align ...

Страница 48: ... screws torque 12 Nm Figure 4 25 Assembling the RT Tube step 8 22 Mount the upper RT reduction flange Res pect the correct position if an eccentrically upper RT reduction flange was used Align the marks at the RT vessel and the upper RT reduction flange 23 Grease twelve M 5 x 12 screws with screw grease 24 Fix the upper RT reduction flange with the twelve screws torque 12 Nm 25 Grease six M 5 x 12...

Страница 49: ... Drop off Plate Figure 4 26 Checking and fitting the Drop off Plate 1 Open the drop off plate 2 Clean the flange of the RT vessel and the O ring with ethanol 3 Grease the O ring with vacuum grease 4 Close the drop off plate 5 Check the drop off plate is correct assembled ...

Страница 50: ...ody 1 to the cryostat yet 3 Pull out the sealing plug 3 off the bottom plate at the valve stem 10 4 Clean the sealing plug 5 Check the sealing plug and the O rings for damage Replace damaged O rings 4 O ring 36 14 x 2 5 Material No 40692 5 O ring 44 x 2 5 Material No 40693 6 O ring 57 x 2 5 Material No 40695 6 Grease the O rings with vacuum grease 7 Pull out the valve stem 10 of the valve body 1 u...

Страница 51: ... Mounting the Vacuum Valve at evacuated cryostat 1 Remove the protection cap of the vacuum flange at the bottom plate 2 of the cryostat 2 Install the valve stem 10 onto the sealing plug 3 and tighten it slightly 3 Turn the Vacuum Valve in the desired posi tion KF 40 flange 9 looking outwards 4 Place the two half rings 7 as shown into the slots of the valve body 1 5 Fix the half rings 7 with four M...

Страница 52: ...dure 3 Pump and flush five times with dry nitrogen gas only necessary for generating vacuum for the first time 4 Generate a vacuum of 10 4 bar with the roughing pump 5 Generate a vacuum of less than 5 x 10 8 bar with a turbo pump up to 48 hours 6 The pumping unit has to be operating until liquid helium filled inside the helium vessel respectively until the magnet inside is at a temperature of 77 K...

Страница 53: ...be heard and felt The cryostat is open after this pro cedure 5 Continue generating a vacuum of less than 5 x 10 8 bar up to 48 hours 6 Push the valve stem 7 slightly and fully into the valve body 2 to insert the sealing plug 1 into the bottom plate 3 The sealing plug 1 snaps in The snapping is well defined and will be heard and felt 7 Stop pumping 1 Ventilate the pump line at the pumping unit 2 Re...

Страница 54: ...ke shown Figure 4 33 Mounting the Cold Head step 1 1 Remove the service flange from the cold head turret Keep the service flange for further service or transportation inside the box of the cold head Figure 4 34 Mounting the Cold Head step 2 2 Check if the cold head turret inside is dry and clean Clean it if necessary 3 Clean the mating surface from cold head turret top flange 4 The cold head turre...

Страница 55: ... cor rectly 8 Clean and grease the two O rings 3 before mounting them on the cold head flange 9 Assemble the three M 5 adjustment screws 4 to the cold head flange The thread should not be visible at the O ring side of the flange 10 Turn the cold head carefully and set it on the copper flange Figure 4 36 Mounting the Cold Head step 4 11 Mount the cold head in the cold head turret respecting the ori...

Страница 56: ...ng and sealing sur face of the KF 16 flange before assembling the pressure relief valve 2 17 Assemble the pressure relief valve 2 to the KF 16 flange 18 Slightly grease the O ring and sealing sur face of the KF 16 flange before mounting the stop valve 2 19 Assemble the stop valve 2 to the KF 16 flange and open it Figure 4 38 Rotary Valve Column overview 1 Noise protection cover 2 Stand plates each...

Страница 57: ...ystem Figure 4 39 Mounting the Rotary Valve Column step 1 1 Put the base plate 1 upside down 2 Arrange the three base supports 2 as shown in the figure with the tapered bores 3 on topside Figure 4 40 Mounting the Rotary Valve Column step 2 3 Mount the three base supports to the base plate with three M 8 x 25 screws 1 per sup port 4 Tighten the screws torque 20 Nm Figure 4 41 Mounting the Rotary Va...

Страница 58: ...counter nuts Figure 4 43 Mounting the Rotary Valve Column step 5 8 Mount the stand plate 1 from the bottom side with three M 12 x 35 screws with washers 3 from the bottom side Do not tighten these screws yet Figure 4 44 Mounting the Rotary Valve Column step 6 9 Continue with the same procedure for the second stand plate Do not tighten these screws yet ...

Страница 59: ...ashers 1 to the two stand plates Do not tighten these screws yet 14 Fix the profile rail to the base plate with the two M 8 x 35 screws with washers 2 Tighten the screws torque 20 Nm 15 Tighten the four M 8 x 35 screws 1 of the stand plates torque 20 Nm 16 Tighten the six M 12x35 screws of the stand plates torque 50 Nm Figure 4 47 Mounting the Rotary Valve Column step 9 17 Put one sliding blocks 1...

Страница 60: ...des of the profile rail 23 Plug in the plastic cap 2 on the top side of the profile Figure 4 50 Mounting the Rotary Valve Column step 12 24 Assemble the front plate 1 to the two adap ter plates 2 using six M 8 x 35 screws with washers 3 torque 20 Nm Figure 4 51 Mounting the Rotary Valve Column step 13 25 Mount the preassembled adapter 1 using four M 8 x 35 screws with washers 2 to the two sliding ...

Страница 61: ...late 2 torque 20 Nm Figure 4 53 Mounting the Rotary Valve and Flex Lines step 2 3 Remove the flex lines from their box 4 Thread the high 2 and low 3 pressure flex lines through the base plate and the flex line positioning disc 1 as shown 5 Thread the motor cord 4 through the base plate and the flex line positioning disc 1 as shown Figure 4 54 Mounting the Rotary Valve and Flex Lines step 3 6 Clean...

Страница 62: ...y to obey this advice is to connect one turn the male and female part as shown in the next figure or to use the supplied plugs of the Aeroquip couplings Alternatively a tissue may be used Figure 4 55 Mounting the Rotary Valve and Flex Lines step 4 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 ho...

Страница 63: ...cket 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 Figure 4 58 Mounting the Rotary Valve and Flex Lines step 7 16 Tighten the cup nuts as shown and loosen them with 1 4 rotation 17 Connect the motor cord to the socket of the rotary valve respecting the indexing Figure 4 59 ...

Страница 64: ... the figure Figure 4 61 Mounting the Rotary Valve and Flex Lines step 10 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 22 Fix the noise protection cover with three special nuts M 6 from the bottom side to the base plate 3 ...

Страница 65: ...If necessary cut away 40 mm on the male side of the insulation to allow free access to the Aeroquip coupling Figure 4 64 Mounting the Flex Lines and the Connection Line Alignment 26 Align the rotary valve column 1 relatively to the magnet stand and the cryostat 4 as shown The connection line 2 between rotary valve column 1 and cold head 3 should not be stressed 27 Remove the plastic cup nuts from ...

Страница 66: ...parts of the noise protection cover 1 on the cold head turret Figure 4 66 Mounting the Noise Protection Cover step 2 32 Check the groove inside the lower part of the noise protection cover is below the connection line 2 33 Attach the two M 4 screws 3 to assemble the two lower parts of the noise protection cover 34 Fix the lower parts of the noise protection cover with the four M 5 screws 1 to the ...

Страница 67: ...d on site to prevent deviant voltage situation Check the compressor pressure while switched OFF The gauges should read 50 Hz compressor 14 5 0 34 bar 210 5 PSI 60 Hz compressor 14 5 0 34 bar 210 5 PSI If the pressure is too high vent helium to the set value If the pressure is too low add helium of high purity He 5 0 99 999 to the set value Contamination with other gases in the helium cycle will se...

Страница 68: ... 6 Connect the low pressure flex line 2 to the compressor Tighten cap nuts and loosen them with 1 4 rotation 7 Connect the high pressure flex line 3 to the compressor Tighten cap nuts and loosen them with 1 4 rotation 8 Only compressor with water cooling option connect the water lines 5 to the compres sor respecting the flow direction 9 Connect the motor cord 6 to the compres sor 10 Connect the co...

Страница 69: ... the Helium Level Sensor step 2 5 Insert the helium level sensor 1 Make sure the helium level sensor inserted into the cor rect hole of the siphon 6 Connect the connector 2 of the helium level sensor 1 with the connector 3 of the helium flow system 4 7 Insert the helium level sensor 1 into the gap of the baffle 5 and insert the assembly into the helium fill in turret Figure 4 72 Mounting the Heliu...

Страница 70: ... O ring 4 Mount the O ring 1 into the sealing sur face Figure 4 74 Mounting the Helium Flow System step 2 5 Mount the helium flow system 1 as shown with the one way valve 2 showing backwards and the flexible side at the helium fill in turret 7 6 Check the correct position of the globes in the quench valves 6 9 of the helium fill in turret 7 and the current lead turret 8 7 Connect the stop valve 4 ...

Страница 71: ... generated via MICS Alarm message at the display of the External Temperature Control Unit Audible alarm from the External Temperature Control Unit 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 Cont...

Страница 72: ...igure below with the S1 and the S3 H1 port at the feed through plate respecting the number of pins 2 Connect the VTA MAG RS to the BSMS board at the console with the supplied BSVT cable Figure 4 76 Mounting the Temperature Control step 2 3 Connect the S2 port of the feedthrough plate to the External Temperature Control Unit with the supplied cable For further steps follow the instructions given in...

Страница 73: ...completely Transportation dewar with sufficient dry and warm nitrogen gas Transportation dewar with sufficient warm helium gas ACD Automatic Cooling Device mounted on a transportation dewar with sufficient liquid nitrogen WARNING Cryogenic Agents see page 2 21 Gas under Pressure see page 2 22 Figure 4 77 Assembly for cooling down from 300 K to 80 K with ACD 1 Current lead turret 2 Helium fill in t...

Страница 74: ...re of 0 1 bar 1 5 PSI at the transportation dewar 11 Open the stop valve at the cold head flange 12 Remove the plug on top of the helium fill in turret 13 Insert the precooling tube into the helium fill in turret carefully Check the precooling tube is completely inserted Check the O ring sealing the precooling tube properly 14 Connect the precooling tube 5 to a pressure gauge 15 Connect the vacuum...

Страница 75: ...iquid nitrogen transportation dewar to 0 2 0 3 bar 1 2 PSI liquid nitrogen transfer starts i Precooling with liquid nitrogen reduces the consumption of liquid helium during cooling down i Time for cooling down to 80 K with liquid nitrogen will take 18 to 24 hours 35 Set the Cryogenic Refrigerator into operation Operating properly the Cryogenic Refrigerator will emit a rhythmic squeak or chirp This...

Страница 76: ...ture sensor temperature difference between upper and lower temperature sensor maximal 25 K Adjust the cooling speed with the liquid nitrogen flow stop liquid nitrogen transfer at a temperature of 80 K at the lower PT 100 temperature sensor 39 Switch off the ACD and remove the connection to the liquid nitrogen transportation dewar at the precooling tube 5 40 Remove the one way valve 2 from the heli...

Страница 77: ... to Removing the Vacuum Valve on page 4 53 and remove the vacuum pumping unit from the vacuum valve 2 Connect the one way valve 2 at the helium flow system with the vacuum pumping unit 3 Pump and flush the helium vessel with warm helium gas 5 times Fill the helium vessel with dry helium gas until the quench valves open Pump to the following pressures 0 8 0 5 0 3 0 1 0 01 bar 11 7 4 1 5 0 1 PSI Use...

Страница 78: ...flange 3 14 Open the stop valve at the cold head flange 3 i If the magnet system will be energized during the next 24 h the current lead can remain in the current lead turret Otherwise continue 15 Remove the plug out of the turret cap of the helium fill in turret 16 Insert the auxiliary shorting plug into the helium fill in turret 17 Remove the current lead out of the current lead turret 18 Insert...

Страница 79: ...e Equipment Protective goggles Protective gloves Safety shoes Portable oxygen monitor and alarm Necessary Tools and Equipment Bruker Power Supply Auxiliary Shorting Plug Current Lead Shorting Plug Tool 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 ...

Страница 80: ...shorting plug into the helium fill in turret 4 Remove the shorting plug out of the current lead turret 5 Insert the dry current lead into the current lead turret respecting the correct position The current lead can only be inserted in one position 6 Connect the main power cable and control cables of the Bruker Power Supply with the current lead 7 Connect the short circuit cable to the main power c...

Страница 81: ...voltage to the first value of the energizing assignment see Appendix Technical Data of the supplied User Manual 8 Set the current to the first value of the energizing assignment see Appendix Technical Data of the supplied User Manual 9 Wait until the sense current at the Bruker Power Supply is 0 V 10 Continue in the same way with the other values and the overshoot of the energizing assignment 11 C...

Страница 82: ... assignment 5 2 3 Cycling Procedure i Cycling only recommended for magnet systems of 500 MHz and more 1 Check the time between energizing and cycling was at least 12 hours 2 Check the helium level is above minimum level during energizing see Appendix Technical Data of the supplied User Manual Refill the helium vessel if necessary 3 Cycle all Z shims with currents according the cycling assignment s...

Страница 83: ...it 5 seconds default setting of the Bruker Power Supply 5 Set the shim currents according to the shimming assignment see Appendix Technical Data of the supplied User Manual 6 Wait until the current is reached 7 Leave the shim heater open for 1 minute with the correct shim current before closing it 8 Switch the shim heater OFF 9 Wait 5 seconds default setting of the Bruker Power Supply 10 Set the c...

Страница 84: ... inserted in one position 8 Close the current lead turret with the turret cap Be careful with the baffles 9 Remove the auxiliary shorting plug out of the helium fill in turret 10 Close the helium fill in turret immediately with the plug of the turret cap 5 2 6 Complete Energizing 1 Refill helium to a value of 95 at the helium level sensor 2 Check the helium flow system correctly mounted as shown 3...

Страница 85: ...cting their manuals Figure 5 3 Start the Magnet Stand Set the magnet stand into operation by switching the pneumatic controller to UP position Figure 5 4 Stop 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 ...

Страница 86: ...86 ZTKS0156 Z31820 Rev 03 Operation ...

Страница 87: ...ediately For contact information see page 9 of this manual 6 1 Safety Approved Persons Bruker Service Approved Customer Personnel Personal protective equipment Protective goggles Protective gloves Protective clothes Safety shoes 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...

Страница 88: ...ation 2 Remark the extent of damage in the transport documents 3 Start complaint process Approved Customer Personnel Indicator Possible reason Solution By Ceiling height too low for assembling on magnet stand Site does not meet the required condi tions Choose another site that meets the required condi tions Bruker Service Ceiling height too low for inserting the helium level sensor Site does not m...

Страница 89: ...pumping unit change if necessary Bruker Service Defective pumping unit Check pumping unit A pressure below 1 x 10 9 bar must be reached with a closed sealing plug Bruker Service Room temperature bore tube has scrat ches or dust on the sealing surfaces Check sealing surfaces on the room temperature bore tube No scratches and no dust should be visible Bruker Service Moisture within the RT vessel Pum...

Страница 90: ...ecooling Adjust correct transfer pressure Bruker Service Vacuum in RT vessel does not reach 5 x 10 8 bar O rings may be leaky Check and clean O rings and slots change O rings if necessary of the vacuum valve of the drop off plate of the reduction and sealing flanges of the bottom plate a Bruker Service O rings may be fro zen due to contact with liquid nitrogen 1 Stop precooling 2 Warm up O ring wi...

Страница 91: ...en through the precooling tube 3 Check with the dipstick to be sure that the helium vessel is completely empty of liquid nitrogen and of frozen nitrogen nitrogen ice Bruker Service After some intervals of pumping and flus hing it is not possible to reach a vacuum in the range of 0 001 bar The globes in the quench valves are not fitting correctly in the O rings and thus the quench valves are leaky ...

Страница 92: ...nsport dewar Bruker Service The transfer pres sure in the transport vessel is too low Increase the transfer pres sure Bruker Service The transfer dewar is leaky there is no transfer pressure built up Check the transport dewar for leakage Tight all connec tions Bruker Service The siphon or the helium transfer line are blocked with ice Check the siphon and helium transfer line for blockages remove i...

Страница 93: ...sual behavior A few days are necessary for the radiation shields and the insulation to reach scheduled temperatures Wait a few days and check helium boil off The presence of the current lead in the current lead turret during energizing and shimming helps to cool down the radiation shield due to higher helium flow Bruker Service Temperature of the radiation shield decreases too slowly if TRS 250 K ...

Страница 94: ...rvice Connector or cables defective Clean connectors or change cables if necessary Bruker Service Setting of sense voltage fails The main coil heater switch is OFF The main coil switch is not opened Switch the main coil heater to ON and check the main coil heater current to be adjusted correctly Bruker Service The main coil heater current is not cor rect The main coil switch is not opened Adjust m...

Страница 95: ... the power supply Bruker Service The main coil switch can not be closed on field The helium level is too low for energi zing The main coil switch is not covered with liquid helium Never try to energize the magnet with less than the minimum level during energi zing in the helium vessel Bruker Service The power supply is defective The main current is oscillating Replace the power supply Bruker Servi...

Страница 96: ...matic con troller is in DOWN position Switch pneumatic controller to UP position Approved Customer Personnel Magnet system has direct mechanical contact with the floor via accessories Identify and eliminate contact point Arrange lines in loose S or U shapes Approved Customer Personnel If the problem is still not solved contact Bruker Service Approved Customer Personnel Magnet system has physical c...

Страница 97: ...tly Stop the pneumatic isolators Check the leveling of the cryostat Bruker Service Defective leveling valve Exchange leveling valve or isolator Bruker Service Defective membrane of an isolator Exchange leveling valve or isolator Bruker Service Magnet system achieves working position jerkily Piston is not centric or touching its casing Align magnet stand Bruker Service Audible loss of air Defective...

Страница 98: ...w system or the sus pension tubes are blocked with ice Blow in warm helium gas carefully through an applicable tube Do not insert it more than 600 mm from the top of the helium turrets Bruker Service The helium boil off is too high The helium level meter is permanently on service mode or used often Switch off helium level sensor Reduce helium level measu rement during measuring of the helium level...

Страница 99: ...erature Control Unit Approved Customer Personnel If the problem is still not solved contact Bruker Service Approved Customer Personnel Vacuum reduced Rebuild vacuum see chapter Rebuilding the Vacuum on page 4 53 Bruker Service Quench Loss of superconductivity See chapter After a Quench on page 6 107 Contact Bruker Service immediately Approved Customer Personnel Cold spots within the RT bore Alignm...

Страница 100: ...ing out of supplied NMR soft ware Helium level sensor defective Replace helium level sensor see chapter Replacement of the Helium Level Sensor on page 6 109 Bruker Service Helium level at con stant level no change during days Helium level sensor defective Replace helium level sensor see chapter Replacement of the Helium Level Sensor on page 6 109 Bruker Service ...

Страница 101: ...Connect the control cable to the current lead and to the power supply correctly Bruker Service The switch Main Coil OFF Shim Coil is not on the Shim Coil position Switch Main Coil OFF Shim Coil on the Shim Coil posi tion Bruker Service High helium flow after breaking vacuum Remaining cryo genic agents in the inner vessels Remove liquid helium Bruker Service Vacuum still remains after 12 hours Vacu...

Страница 102: ...sure switch for reset and after this the start button on the compressor For problems not specified in this chapter refer to the supplied manual of the Cryogenic Refrigerator Continued on next page Indicator Possible reason Solution By Compressor is not operating No power supply or power supply inter rupted Check the power supply to the compressor and verify that it meets the system requi rements A...

Страница 103: ...e rotary valve 1 Dismount the noise pro tection cover of the rotary valve column 2 Check the motor cord connection at the rotary valve 3 Connect motor cord if necessary 4 Remount the noise pro tection cover Approved Customer Personnel If the problem is still not solved contact Bruker Service Approved Customer Personnel Aeroquip connec tors of the flex lines not correctly tigh tened at the com pres...

Страница 104: ...otary valve Bruker Service Compressor is operating pressure fluctuation visible at the pressure gauges extinguish short after start Water chiller not running Check possible reasons why the water cooler is not running Start the water cooler Approved Customer Personnel Cooling water flow to low Check cooling water supply is sufficient refer to supplied manual of the Cryogenic Refrigerator Approved C...

Страница 105: ...e Aeroquip connectors correctly Check if the O rings of the fit ting are in correct position see chapter Mounting the Rotary Valve and Flex Lines on page 4 61 Bruker Service Low helium pres sure inside the com pressor helium circuit Recharge helium of high purity He 5 0 99 999 Refer to supplied manual of the Cryogenic Refrigerator Bruker Service Low helium pres sure due to small leak inside the he...

Страница 106: ...d Pump and flush the cold head See chapter Pro cedure in case of Cryogenic Refrigerator failure on page 6 111 Bruker Service Cold head defective Replace the cold head See chapter Procedure in case of Cryogenic Refrigerator failure on page 6 111 Bruker Service Cryogenic Refrigera tor contaminated Replace the complete Cryo genic Refrigerator See chap ter and Mounting the Cryogenic Refrigerator Parts...

Страница 107: ...rect position 5 Remove probe and shim system to prevent icing from the shim system 6 Check the nitrogen turrets for icing 7 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 8 Contact Bruker Service immediately Figure 6 1 Quench picture A quench is the very fast de energizing of the magnet by loss of its su...

Страница 108: ... unit if equipped with 7 Continue following the instruction according the cooling down procedure see chapter Cooling down to 4 2 K on page 4 77 Quench during energizing 1 Set the sense voltage to 0 V 2 Set the charge current to 0 A 3 Switch off the shim automatic 4 Close all superconducting switches 5 Switch the Bruker Power Supply OFF 6 Remove the current lead 7 Insert the shorting plug 8 Close t...

Страница 109: ... in turret until the connector of the helium level sensor 4 becomes visible Figure 6 3 Changing the Helium level sensor step 2 6 Disconnect the connector 2 of the helium level sensor 1 from the connector 3 of the helium fill in turret 7 Remove the assembly with the baffle 4 5 fully and lay it down carefully 8 Remove helium level sensor 1 out of the helium fill in turret length approximately 1 m an...

Страница 110: ...e contacting Bruker Service Note Date and time Temperature given on the display of the External Temperature Control Unit Turn the alarm off see supplied manual of the External Temperature Control Unit Which errors or warnings appear What are the readings of the pressure gauges run time counter etc of the compressor Which parts seems to be ok not ok How did the failure occur and what happened befor...

Страница 111: ...ilure shorter than 3 days just restart the compressor of the Cryogenic Refri gerator See remarks at chapter During Operation of the Cryogenic Refrigerator on page 6 102 for further information 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 ca...

Страница 112: ...112 ZTKS0156 Z31820 Rev 03 Troubleshooting ...

Страница 113: ...ument 7 1 Safety Approved Persons Bruker Service Approved Customer Personnel Personal protective equipment Protective goggles Protective gloves Safety shoes 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 Low Temperatures see page 2 23 Spontaneous Ignition and Explosion see page 2 23 Hot Surfaces see page 2 25 ...

Страница 114: ...d low pressure gauges on the front panel of the compressor if the mean values are different and if an oscillation of the needles is noticeable 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 Check system pressure water flow and temperatures Refer to the manual of...

Страница 115: ...e compressor if the mean values are different and if an oscillation of the needles is noticeable Refer to the supplied manual of the cryogenic refrigera tor Pressure to high Vent helium gas Use the Service Kit Pressure to low Refill helium gas of high purity He 5 0 99 999 Use the Service Kit Bruker Service 35 040 hours 4 years Cryogenic Refrigerator Replace rotary valve and cold head Refer to chap...

Страница 116: ...rvice Kit Material No Z119869 Figure 7 1 Service Kit The Service Kit includes Non ferromagnetic wrench set Aeroquip adapters Helium Manifold Flex Line for servicing Frequently needed spare parts Figure 7 2 Tool Tray 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 ...

Страница 117: ...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 Figure 7 4 Flex Line Insulation Check the insulation of the Flex Lines for damage and cuts If necessary use the supplied instant adhesive for repair ...

Страница 118: ...trol Unit Figure 7 5 Replacing the Rotary Valve step 1 1 Stop the Cryogenic Refrigerator The temperature will increase and the External Temperature Control Unit will give an audible and a visual alarm 2 Stop the audible alarm of the External Tem perature Control Unit refer to the supplied manual of the External Temperature Control Unit 3 Remove the noise protection cover from the cold head 4 Relea...

Страница 119: ... on page 4 61 Figure 7 8 Replacing the Cold Head step 2 13 Check if the temperature shown on the display of the External Temperature Control Unit is 90 K 14 Close the stop valve 1 and remove it from the KF 16 flange 15 Remove the three fixing screws M 6 2 16 Lift the cold head out of the turret by turning the 3 adjustment screws 3 until the top O Ring of the turret sealing becomes visible Prevent ...

Страница 120: ... head carefully back in the supplied box 21 Mount the new cold head following the instructions given in chapter Mounting the Cold Head on page 4 54 22 Connect the connection line to the cold head following the instructions given in chapter Mounting the Rotary Valve and Flex Lines on page 4 61 23 Start the compressor following the instruc tions given in chapter Mounting the Com pressor on page 4 67...

Страница 121: ...nal Protective Equipment Protective goggles Protective gloves Protective clothes Safety shoes 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 ...

Страница 122: ...ting 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 Tool kit supplied with the CRC package Wrenches for Flex Lines ...

Страница 123: ... Technical Data Switch the shim heater switches ON and reduce the shim current slowly to 0A Switch the shim heater switches OFF 8 Start the shim automatic Z and Z2 ON 9 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 13 Wait ...

Страница 124: ...the Cryogenic Refrigerator parts until the magnet system is at room temperature 7 Insert the precooling tube into the helium fill in turret 8 Connect a helium gas dewar to the precooling tube Apply a pressure of 0 18 bar to the helium gas dewar 9 Remove liquid helium by feeding dry helium gas into the precooling tube Do not use nitrogen or pressurized air for removing helium out of the helium vess...

Страница 125: ...at the vacuum valve to prevent air entering the cryostat 5 Turn the vacuum valve in the desired posi tion KF 40 flange 9 looking outwards 6 Place the two half rings 7 as shown into the slots of the valve body 1 7 Fix the half rings 7 with four screws M 6 x 12 8 8 Connect the pumping unit with the special flow device Material No Z57350 without a clamping device to the KF 40 flange of the vacuum val...

Страница 126: ... Compressor on page 4 67 in reverse order i For water cooled compressor option only a small amount of water from inside the com pressor will flow out Provide equipment to absorb water and to dry the floor 4 Follow the procedure described in chapter Mounting the Rotary Valve and Flex Lines on page 4 61 in reverse order 14 The KF 40 connection at the vacuum valve will open if the RT vessel of the cr...

Страница 127: ...Restore all parts to the box of the Cryogenic Refrigerator 10 Fasten the compressor inside the box with the supplied straps 8 2 6 Removing of the RT Tube and the Nitrogen Tube Bottom of the Cryostat Top of the Cryostat Figure 8 2 Disassembling the RT Tube step 1 1 Loosen the screws at the bottom RT closure flange 1 a little without removing anything Figure 8 3 Disassembling the RT Tube step 2 2 Lo...

Страница 128: ...using clean gloves Prevent any damage scrat ches buckling to the nitrogen tube by carefully handling it Restore it in its original box 7 Remove the RS reduction flange Figure 8 5 Disassembling the Nitrogen Tube step 2 8 Remove the bottom RT closure flange and the bottom RT reduction flange Leave it assembled 9 Remove bottom nitrogen contact flange 1 Figure 8 6 Disassembling the Nitrogen Tube step ...

Страница 129: ...m the top 4 Screw threaded bar 4 into the brass nut 2 5 Fix the lock nut 5 6 Insert the assembly of the lower transporta tion lock into the helium bore tube Prevent clamping the super insulation with the transportation lock 7 Fix the transport bottom plate 1 with twelve M 5 x 12 screws 8 Insert and fix the three threaded bolts M 8 6 9 Fix the three nuts M 8 7 Figure 8 8 Assembling the transportati...

Страница 130: ...3 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 10 Assembling the transportation lock step 4 18 Fix the water protection cover 1 ...

Страница 131: ...net stand in their original boxes 8 2 9 Prepare the Cryostat for Transportation Procedure 1 Put the cryostat in its original box See chapter Packaging on page 3 31 2 Fasten the straps inside the box to fix the cryostat 3 Put the accessories such as the flow systems level sensors and bore tubes into the side compartment of the box 4 Close the box In case of subsequence storage refer to chapter Stor...

Страница 132: ...132 ZTKS0156 Z31820 Rev 03 Disassembling ...

Страница 133: ...133 ZTKS0156 Z31820 Rev 03 A Appendix Warning Signs Figures Tables Glossary Abbreviations Technical Data Index ...

Страница 134: ...134 ZTKS0156 Z31820 Rev 03 Appendix ...

Страница 135: ...Heavy Weights 24 Intended Use 18 Key Word and Symbol 17 Low Temperatures 23 Magnetic Field 20 Persons 18 Quench 22 Safety Devices 19 Signs and Labels 20 Slippage 23 Spare Parts 19 Spontaneous Ignition and Explosion 23 Warnung Warning Art und Quelle der Gefahr 25 Caution Incorrect Transportation 25 Key Word and Symbol 17 Notice Key Word and Symbol 17 ...

Страница 136: ...136 ZTKS0156 Z31820 Rev 03 Appendix ...

Страница 137: ...43 Figure 4 10 Checking the Getter Container 43 Figure 4 11 Checking and fitting the Feedthrough Plate 44 Figure 4 12 Assembling the Nitrogen Tube step 1 44 Figure 4 13 Assembling the Nitrogen Tube step 2 44 Figure 4 14 Assembling the Nitrogen Tube step 3 45 Figure 4 15 Assembling the Nitrogen Tube step 4 45 Figure 4 16 Assembling the Nitrogen Tube step 5 45 Figure 4 17 Assembling the Nitrogen Tub...

Страница 138: ... 59 Figure 4 47 Mounting the Rotary Valve Column step 9 59 Figure 4 48 Mounting the Rotary Valve Column step 10 60 Figure 4 49 Mounting the Rotary Valve Column step 11 60 Figure 4 50 Mounting the Rotary Valve Column step 12 60 Figure 4 51 Mounting the Rotary Valve Column step 13 60 Figure 4 52 Mounting the Rotary Valve and Flex Lines step 1 61 Figure 4 53 Mounting the Rotary Valve and Flex Lines s...

Страница 139: ...gure 4 79 Adjusting the Cold Head 75 Figure 4 80 Helium Flow System during usual operation 77 Figure 5 1 Helium Flow System during energizing 80 Figure 5 2 Helium Flow System during usual operation 84 Figure 5 3 Start the Magnet Stand 85 Figure 5 4 Stop the Magnet Stand 85 Figure 6 1 Quench picture 107 Figure 6 2 Changing the Helium level sensor step 1 109 Figure 6 3 Changing the Helium level sens...

Страница 140: ...e 8 6 Disassembling the Nitrogen Tube step 3 128 Figure 8 7 Assembling the transportation lock step 1 129 Figure 8 8 Assembling the transportation lock step 2 129 Figure 8 9 Assembling the transportation lock step 3 130 Figure 8 10 Assembling the transportation lock step 4 130 Figure A 1 Helium Level Sensor 146 Figure A 2 Characteristic Curve PT 100 147 Figure A 3 Characteristic Curve IBT 148 Figu...

Страница 141: ...les 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 ...

Страница 142: ...142 ZTKS0156 Z31820 Rev 03 Appendix ...

Страница 143: ...orting cryogenic agents like gaseous or liquid helium or nitrogen Magnet System The collective of all parts necessary for the intended use The superconducting magnet inside the cryostat is energi zed Abbreviations Description ACD Automatic Cooling Device BSMS Bruker Smart Magnetcontrol System BSVT Bruker Smart Variable Temperature System MICS Magnet Information and Control System Bruker Corporatio...

Страница 144: ...144 ZTKS0156 Z31820 Rev 03 Appendix ...

Страница 145: ...s of the identification plate Address of the Manufacturer Magnet System Identifier Type Identification Number Magnet Identifier Serial Number Year of Construction Cryostat Identifier Specification Helium Vessel Specification Vacuum Chamber Weight empty and completely filled including magnet stand Value Unit Minimum surrounding temperature 7 C Maximum surrounding temperature 38 C Maximum relative h...

Страница 146: ... Material No Value Unit Level Sensor Type Z58114 1300 690 Overall length 1300 mm Active length 690 mm Calibration 0 Calibration resistor Z28630 blue 140 Ω Calibration 100 Calibration resistor Z28628 black 15 Ω Table A 2 Helium Level Sensor Figure A 1 Helium Level Sensor 1 Pin Side 2 Solder Side 3 Pin connector 4 Active length 5 Sensor tube 6 Superconductor ...

Страница 147: ...e magnets during cooling and warming up of the magnet system PT 100 i Measure the resistance with a maximum current of 1 mA Temperature Unit Resistance Unit Room Temperature 293 K 107 8 Ω 273 K 100 0 Ω 250 K 91 0 Ω 200 K 71 1 Ω 150 K 50 9 Ω 100 K 30 0 Ω Liquid Nitrogen 77 K 20 1 Ω Table A 3 Characteristic Values PT 100 Figure A 2 Characteristic Curve PT 100 ...

Страница 148: ...sistance with a maximum current of 0 1 mA Temperature Unit Resistance Unit Room Temperature 300 K 220 Ω Liquid Nitrogen 77 K 265 Ω 40 K 300 Ω 20 K 350 Ω 10 K 420 Ω 8 K 450 Ω 6 K 500 Ω 5 K 540 Ω Liquid Helium 4 2 K 575 Ω Table A 4 Characteristic Values IBT Figure A 3 Characteristic Curve IBT ...

Страница 149: ...149 ZTKS0156 Z31820 Rev 03 Technical Data RS Service Wiring Diagramm Temperature Sensors Figure A 4 Wiring Diagramm Temperature Sensors View from outside Feedthrough Plate ...

Страница 150: ...150 ZTKS0156 Z31820 Rev 03 Technical Data RS Service This side is intentionally left blank ...

Страница 151: ...151 ZTKS0156 Z31820 Rev 03 Technical Data RS Service Magnet System Report Helium level Helium flow ml h T RS K Date Time Signature ...

Страница 152: ...152 ZTKS0156 Z31820 Rev 03 Technical Data RS Service Magnet System Report Helium level Helium flow ml h T RS K Date Time Signature ...

Страница 153: ...onnection Line 12 Cryogenic Agents 20 21 Cryogenic Refrigerator 13 111 124 D Disturbances 96 Drop Off Plate 49 Drop off Plate 29 E Electricity 21 Emergency 30 Emergency Exit 27 External Temperature Control Unit 71 F Feedthrough Plate 44 Fire Department 30 First Aid for Cold Burns 30 Flex Lines 12 61 117 H Helium Flow System 70 Helium Level Sensor 69 I Identification Plate 145 Intended Use 18 L Lia...

Страница 154: ... Clothes 26 Protective Gloves 26 Protective Goggles 26 Q Quench 22 107 Quench Valve 29 R Rescue Equipment 30 Rotary Valve 61 118 Rotary Valve Column 12 56 S Safety Devices 28 Safety Shoes 26 Service Kit 116 Shock Watch 32 Slippage 23 Spontaneous Ignition 23 T Tilt Watch 32 Tilting 24 V Vacuum Valve 50 VTA MAG RS 71 W Warranty 11 ...

Страница 155: ... system not yet fixed 01 April 2010 New release after re design of the cryostat and release of the Rotary Valve Column using a new specific form of the Corpo rate Guide Line and the definition from the Bruker documenta tion group 02 November 2010 New release with a new order of content 03 May 2011 New release with minor changes ...

Страница 156: ...156 ZTKS0156 Z31820 Rev 03 ...

Страница 157: ...r you the opportunity to collaborate with us on new developments Our ongoing efforts and substantial investment in research and development demonstrate our long term commitment to technological innovation on behalf of our customers With 50 years of experience in meeting the needs of the scientific community across a range of specialist disciplines Bruker has built a sound rapport with professional...

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