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He-Compressor and Cold-Head Service

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1. 4 SD 60 pressure regulator and charging line to a helium bottle purity 99 99996 up Connect a gas charging tool to the Compressor Unit after closing the valve of gas charging tool Open the valve of pressure regulator slightly and slowly Purge a Helium Gas for about 30 seconds to vent the contamination in the charging line Reduce the helium gas flow by controlling the valve of pressure regulator and keep the slight helium gas flow Purge the air in the gas charging tool for about 5 seconds by opening the valve of gas charging tool Reduce the helium gas flow by controlling the valve of gas charging tool and keep the slight helium gas flow Connect a charging line to a gas charging tool Shut the valve of gas charging tool immediately Set the pressure regulator around 1 65 1 70 MPa 16 8 17 3 kgf cm G 239 246 psig Open the valve of gas charging tool slightly and slowly Charge Helium gas till the pressure gauge of the Compressor Unit indicates specified filling pressure and shut the valve See TECHNICAL INSTRUCTION for more detail of the pressure Cold Head used COLD HEAD MODEL STATIC PRESSURE RDK 408D2 4K Cold Head RDK 408D 4K Cold Head RDK 415D 4K Cold Head RDK 408S2 10K Cold Head RDK 408S 10K Cold Head 1 60 1 70 MPa at 20 deg C 68 deg F 16 3 17 3 kgtf cm G 232 246 psig 1 45 1 55 MPa at 20 deg C 68 deg F 14 8 15 8 kgf cm G 210 225 psig 7 80 RDK 400B Single
2. x Hoc E SE EZ O EXE e BIZ 22262 ao 4 M 1 gle C NE AT FED ofe tm I 83 x cce 5 i eee fb m zorad M CEDE iL 0020000 p of CSW 71C 27 TECHNICAL INSTRUCTION Sumitomo Heavy Industries Ltd APPENDIX APPENDIX ELECTRICAL SCHEMATIC No PART NAME 1 ELECTRICAL SCHEMATIC of CSW 71C FOR AC CIRCUIT 2 ELECTRICAL SCHEMATIC of CSW 71C FOR DC CIRCUIT DRAWINGS No PART NAME 1 ADSORBER 2 CLASS G FUSE 5A 3 INPUT POWER CABLE LV CSW 71C 28 INCOMING POWER SUPPLY EXTERNAL PROTECTIVE CONDUCTOR 3 50 60Hz UPSTREAM PROTECTION Use COPPER CONDUCTOR ONLY 200v 3 wire SIZE AS PHASE CONDUCTOR L POWER SUPPLY CONDUCTOR Use 75 WIRING SIZED TO 80 0 AMPACITY Use COPPER CONDUCTOR ONLY AWG 8 8 3m2 OR LARGER E n 222252215222 22222 U _ A PE 222262621222 U _ EXCLUSION FROM SCOPE OF SUPPLY L1 L2 13 TBO LIMIT OF EQUIPMENT DIRECT TO ENCLOSURE OF PAN PROTECTIVE GROUND gri x x x pae E i A MAIN DISCONNECTING MEANS CIRCUIT INTERRUPTER WITH AWG16 1 gt OUTSIDE OPERATING NOB AND 8 m LL PADLOCK FITTING HOLE AT OFF POSITION INSTANTANEOUS OC TRIP
3. 10 Gas Cleanup and 11 PARIS4 n els a MB II ee toe 13 Orderin 13 Parts Identification and Numbers ret reci cr Ere pd eee ede 13 ILLUSTRATIONS Figure 1 Typical Helically Corrugated Gas Line Construction 1 Figure 2 Break Gas Line Connection from 6 Figure 3 Disconnect Gas Line from 6 Figure 4 Break Gas Line Connection from Cold Head 6 Figure 5 Disconnect Gas Line from Cold 6 Figure 6 Aeroquip Male Coupling 8 Figure 7 Remove Coupling from Gas 9 Figure 8 Aeroquip Female Coupling 9 Figure 9 Parts Identification err rr 13 SJM P N261320A This page is intentionally blank DESCRIPTION Gas lines are needed to connect compressors to cold heads expanders to complete the System Gas lines are constructed from helically corrugated stainless steel tubing covered with metal braid or from soft copper tubing All gas lines are equipped with Aeroquip self sealing couplings and a
4. 2 Turn off the Main Power Switch I 24 2 1 For Air Cooled Compressor Unit For Water Cooled Compressor Unit SRDK Series CRYOCOOLER 39 OPERATION MANUAL Sumitomo Heavy Industries Ltd 3 4 NORMAL OPERATION 3 4 NORMAL OPERATION WARNING Warning about rotating part gt If the compressor unit used is the CSA 714 air cooled low voltage type a venting fan is provided in the exhaust section at the top of the compressor unit Do not insert foreign substances from the exhaust port under any circumstances Failing to observe this precaution may result in injury or malfunction If the compressor unit used is the CSA 71A air cooled low voltage type note that the noise level of the whole equipment may exceed 70 dBA depending on the environment it is used in EXHAUST SOUND Starting Cryocooler you can hear the gas inlet outlet sound from the Cold Head The sound of the Cold Head is 60 rpm at 50 Hz and 72 rpm at 60 Hz respectively During this checking the Compressor operating pressure will be around 2 5 MPa 25 5 kgf cm G 362 psig SUPPLY PRESSURE INDICATION Monitor the compressor s supply He gas pressure In the normal operation with adequate heat loads the supply helium gas pressure indicates between 2 1 and 2 3 MPa 21 4 and 23 5 kgf cm G 304 and 333 psig The operating pressure varies according to the heat load of cold head and temperatu
5. OPERATION MANUAL Sumitomo Heavy Industries Ltd 3 3 SHUT DOWN 3 3 SHUT DOWN OPERATION WARNING Warning about explosion escape of gas Do not break the vacuum with the low temperature of cold head second stage when removing the cold head from the vacuum chamber Breaking the vacuum may result in serious damage explosion or escape of gas Keep the Flex Lines connected and maintain the high vacuum of the chamber and wait until the cold head second stage temperature rises up to 100K before removing the cold head CAUTION Caution against misoperation The cryocooler ON OFF frequency must be less than 6 times per hour and the ON OFF interval must be more than 3 minutes The frequent ON OFF operation may result in damage of compressor capsule or malfunction The cold head drive switch provided with the compressor unit is only used for maintenance Be sure to turn it OFF in normal operation Using the compressor unit with the cold head drive switch turned ON may result in misoperation or malfunction The coldhead employs the special seal to the 2nd stage The 2nd stage displacer is fit tightly in the cylinder Make sure the 2nd stage temperature is less than 28 deg C before starting up the cryocooler or the coldhead may make grinding noise Shut down operation for the Cryocooler as mentioned below Turn off the Drive Switch For Air Cooled Compressor Unit For Water Cooled Compressor Unit
6. TTT there nne d n Figure 2 2 BUFFER TANK INTERCONNECTING DIAGRAM SRDK Series CRYOCOOLER 29 OPERATION MANUAL Sumitomo Heavy Industries Ltd 2 7 CONNECTING FLEX LINES LEAK CHECK Check the helium gas leak of all connecting coupling as following procedure after connecting all Flex Lines 10 Sprinkle Liquid Leak Detector on the Flex line connecting coupling 21 Keep watching carefully the sprinkled area and no gas leaking will be confirmed without any bubbling In case the bubbling is found tighten the connecting coupling again and re check the leakage Do not over tighten the connector SRDK Series CRYOCOOLER 30 OPERATION MANUAL Sumitomo Heavy Industries Ltd 2 8 COLD HEAD POWER CABLE CONNECTION 2 8 COLD HEAD POWER CABLE CONNECTION WARNING Warning about electric shock gt Make sure no power is applied to the compressor unit before starting operation when connecting or disconnecting the cold head power cable Failing to observe this precaution may result in electric shock Make the Cold Head Power Cable connection as follows Phillips Screwdriver is required to connect the Cold Head Power Cable CONNECTION TO THE COLD HEAD 1 FOR CONVERSION CONNECTOR TYPE Connect the Cold head Cable to the Conversion Connector directly
7. 3 1 PERIODICAL MAINTENANCE 3 1 PERIODICAL MAINTENANCE CSW 71C Compressor Unit is to be required the routine maintenance The basic maintenance work is to replace the oil mist Adsorber of the Compressor Unit for every 20 000 Hrs operation as mentioned Table 3 1 Table 3 1 MAINTENANCE SCHEDULE MAINTENANCE FREQUENCY REMARKS Replace Compressor Adsorber Every 20 000 Hrs rau zem Charge Helium Gasto Compressor Asrequired conditions Compressor Fuse Replacement Table 3 2 RENEWAL PARTS LIST FRU S DESCRIPTION PART NUMBER REMARKS Adsorber RE71TN0408 Fut is Fu3 RE71WTO603 Class G Fuse 5A Hose Nipple RE38VT0689 OD 12 7mm x PT3 8 male CSW 71C 22 TECHNICAL INSTRUCTION Sumitomo Heavy Industries Ltd 3 1 PERIODICAL MAINTENANCE 3 1 1 REPLACEMENT OF THE COMPRESSOR ADSORBER WARNING Warning about explosion escape of gas This cryocooler cold head compressor unit compressor adsorber flex lines contains a high pressure about 1 62 MPa helium gas sealed in Hitting the equipment with a sharp edge or touching it with a pointed object may cause explosion or escape of gas Handle the equipment with extreme care Do not disassemble the equipment for purposes other than maintenance specified in this service manual under any circumstances Disassembling the equipment may result in electric shock explosion or escape of gas The cold head compressor unit compressor adsorber and flex li
8. EN61010 1 1993 A2 EN55011 1991 EN50082 2 1995 Underwriters Laboratories Inc USA UL 471 Miscellaneous Refrigeration Equipment Japan Ministry of Trade and Industry MITI Directory No 51 SRDK Series CRYOCOOLER 9 OPERATION MANUAL Sumitomo Heavy Industries Ltd PRESSURE UNIT CONVERSION TABLE PRESSURE UNIT CONVERSION TABLE o0 0 01 0 2 0 03 0 04 0 05 0 06 0 07 0 08 0 09 MPa 0 00 0 01 0 02 0 03 0 04 0 05 0 06 0 07 0 08 0 09 oo 02 04 os 07 os oo 4 e 7 of wj 12 19 so nr 1 2 asf tal 15 16 17 19 14 16 17 19 20 22 23 25 26 28 20 21 22 23 24 26 27 28 29 30 o2 29 sof 32 sa 39 36 sef 39 42 62 64 65 67 70 71 En 90 OQ OO 34 A CE E EE E E 04 106 107 109 110 112 113 114 EE E EET Pee ES E DE 181 183 A c of o Peal os ral os 9 1 116 117 119 os EM C ETE aa 0 ros pos ma j io 11 2 11 3 11 4 11 5 11 6 11 7 11 8 11 9 12 0 12 2 12 3 12 4 12 5 12 6 12 8 12 9 13 0 13 1 un wo _ wo 6 mi zs ays OQ o oO m _ A A q ol x H i oj 15 3 15 4 15 5 15 6 15
9. OPERATING LOG SRDK Series CRYOCOOLER Installation Date Cold Head Serial Number Compressor Unit Serial Number Figure 7 1 OPERATING LOG SRDK Series CRYOCOOLER 56 OPERATION MANUAL Sumitomo Heavy Industries Ltd REVISION CONTROL REVISION CONTROL Manual DEC 10 1999 B Change the SHI address JAN 25 2001 MAR 21 2001 D Add the start up temperature CAUTION JAN 21 2002 APR 1 2002 JUL 11 2002 CD3222 063 FEB 28 2003 Change the division name JUN 9 2003 Add th ipti dd the description for the RDK 408D2 and S2 DEC 18 2003 Cold Head SRDK Series CRYOCOOLER SHI Sumitomo Heavy Industries Ltd MANUAL NUMBER CD32ZZ 068Q DATE December 1 2009 TECHNICAL INSTRUCTION CSW 71C COMPRESSOR UNIT For Service Personnel Only Sumitomo Heavy Industries Ltd Cryogenics Division 2 1 1 Yato cho Nishitokyo City Tokyo 188 8585 Japan E mail cryo shi co jp URL http www shicryogenics com TECHNICAL INSTRUCTION Sumitomo Heavy Industries Ltd TABLE OF CONTENTS TABLE OF CONTENTS SECTION ITEM PAGE No lt gt CROSS REFERANCE N N GENERAL INFORMATION 1 1 SPECIFICATIONS 1 2 CONSTRUCTION 1 2 1 CONTROLS AND COUPLINGS 1 2 2 GAS AND OIL FLOW IN THE COMPRESSOR UNIT 1 2 3 INTERNAL COMPONENTS ELECTRICAL DESCRIPTION 1 3 1 EXTERNAL CONNECTOR ola 1 9 1 3 2 SAFETY DEVICES 14 2 INSTALLA
10. WARNING AVOID INJURY Always vent a gas charged component before beginning to disassemble its couplings Gas pressure can launch a loose coupling with enough force to cause personal injury PRESERVE YOUR WARRANTY Modification to equipment without the consent of the manufacturer will void the warranty Damaged threads leaking seals or a leaking valve assembly may require replacement of coupling parts or replacement of the complete coupling half Replace the Gasket Seal Tool required Needle or a narrow flat blade screwdriver Cotton swabs Isopropyl alcohol From repeated connecting and disconnecting the coupling the gasket face seal just inside the face of a male coupling may begin to leak and require replacement The gasket seal is replaced while the gas line is disconnected 1 Carefully pierce or pry the old gasket face seal and pull it from its recessed ring in the body of the coupling Discard the face seal See Figure 6 2 Using isopropyl alcohol on a clean cotton swab carefully remove any remaining adhesive from the coupling s recess Avoid getting alcohol on the face of the poppet 3 Dry the recessed surface with a clean lint free cloth 4 Do not apply any adhesive Press a new gasket seal into the recessed ring VALV ASSEMBLY ADAPTER N O RING 1 BODY BONDED GASKET SEAL Figure 6 Aeroquip Male Coupling Parts Maintenance Repair or Replace a Coupling Tools required Open end wrenches
11. Y P AEROQUIP 1 2 2PLACES PROTECTIVE CAP 2PLAGES NOTE 1 CHARGED HELIUM GAS 16 5 Cro 62MPa 2 WEIGHT 11kg ADSORBER 9 10 3 1 CLASS 2 CURRENT RATING 5 CLASS G FUSE 5A LIQUID TIGHT LOCK NUT CONNECTOR CONDUIT Compressor E Unit Side gi S ay SESI wa MODERNE RAND ESAE ae NES L 140 i CABLE UL APP MAX VOLTAGE 600V Z wes8 8 49 Li L1 E i i i L2 gt lt 12 1 SIZE MIN 34mm 2 PART TO BE BAGGED OR BOXED AND SEALED FROM DIRT AND MOISTURE INPUT POWER CABLE LV CSW 71C L1 BLACK L2 BLACK L3 BLACK GREEN YELLOW GROUND TECHNICAL INSTRUCTION Sumitomo Heavy Industries Ltd REVISION CONTROL REVISION CONTROL No DEC 10 1999 B Change the Electrical Schematic Diagram APR 4 2000 JAN 11 2001 D ChangetheSHladdres JAN 25 2001 JAN 30 2001 FEB 19 2001 MAR 21 2001 requirement and description of demineralized water __ Change the dimension
12. 77 1 2002 Correct the descriptions of Input Power Cable JUL 11 2002 Connection FEB 28 2003 03277 068 JUNE 9 2003 Add the description for the RDK 408D2 and S2 Cold Head The information of the SHI inquiries and typographical error was corrected The descriptionof the Cooling Water requirement was revised DEC 18 2003 JAN 12 2006 Electrical Schematic 2 2 was corrected Add the specification for the D Sub Connector lock AUG 21 2008 screw tighten torque The Humidity Range was added DEC 1 2009 CSW 71C
13. INPUT POWER CABLE LV of DRAWINGS for detail Make electrical connection as follows Upstream Protection Use the fuses or circuit breakers as upstream protection of L1 L2 L3 The recommended rating of the protection is maximum 60A Power Supply Conductor and Protective Earth Conductor Use 75 deg C wiring sized to 60 deg C ampacity Use copper conductor only AWG 8 8 3 mm or larger Compressor Unit Side Power Supply Conductors Protective Earth Conductor Striping Length 12 mm Striping Length 12 mm Tightening Torque 1 3 Nm Tightening Torque 1 8 Nm User s Power Source Side Power Supply Conductors Protective Earth Conductor Striping Length 12 mm Striping Length 12 mm CSW 71C 19 TECHNICAL INSTRUCTION See the Table 1 1 for power requirements WIRING DIAGRAM For User s Power Source L1 O O O L2 L3 Ground CSW 71C Sumitomo Heavy Industries Ltd 2 2 INPUT POWER CABLE CONNECTION The cables are marked with label and connect as follows For Compressor Unit FIELD TEMINAL GROUNDING TEMINAL 20 TECHNICAL INSTRUCTION Sumitomo Heavy Industries Ltd 3 MAINTENANCE 3 MAINTENANCE WARNING Warning about electric shock This cryocooler includes a high voltage section Touching it may result in electric shock Handle it with extreme care Make sure no power is applied to the compressor unit before starting the installation Failing to observe this precaution may result in ele
14. Ltd 6 TROUBLE SHOOTING FLOW CHART Cold Head Cooling Power is low Reference Operation Manual Section 4 1 1 Check the filling pressure Reference Operation Manual Normal x Section 4 2 Check the leakage of the flex line connections Reference Compressor Unit Technical Insuruction Section 1 1 Check the ambient temperature Reference CSA 71A Technical Insuruction Section 2 1 Normal For CSA 71A Check the air flow space of the Compressor Unit Reference CSA 71A Technical Insuruction Section 3 1 2 For CSA 71A Check the dust of heat exchanger Normal SRDK Series CRYOCOOLER Abnormal Reference Operation Manual Section 4 1 1 5 4 Adjust the filling pressure Abnormal Reference Operation Manual Section 4 1 1 5 4 Correct error s then Adjust the filling pressure Abnormal Reference Compressor Unit Technical Insuruction Section 1 1 Control the circumstance to the specified temperature Abnormal Reference CSA 71A Technical Insuruction Section 2 1 Ensure the enough space Abnormal Reference CSA 71A Technical Insuruction Section 3 1 2 Clean the heat exchanger N lt Reference CSW 71C CSW 71D Technical Insuruction Section 1 1 For CSW 71C D Check the c
15. SUPPLIED VOLTAGE TO BE 24V DO OR LESS CNI10 ong 2 1 _ TEMPERATURE TEMPERATURE ALARM 4 5 KAB WHEN CONTACT OPENS SUPPLIED 1100 600 d e 4 VOLTAGE TO BE 24V DC OR LESS _ I PRESSURE lt 5 FAULT TIMING DRIVE INDICATION lt e WHEN 24V DC IS GIVEN BETWEEN JR 8 J AND 7 PIN USABLE CURR max 0 15 4 9 K 7 COMMON LINE 24V DC 1 TEMPERATURE lt s FAULT TIMING 19 100 4 kaz REMOTE RESET LOK WHEN KA11 IS ENERGIZED BY 4 PULSED 24V DC FOR 1 SEC CONTROL VOLTAGE 24V DO SNF BAS E USABLE CURR max 0 15A 1 9 PSH 10 2 PRESSURE CONTROL COMPRESSOR DRIVE COLDHEAD DRIVE 1 SA1 4 10 5 CN12 5 KAT 8 INT 111 1 T CN5 6N12 12 KA10 ExT 7 2 HOU IN ELAPSED TIME 10813 CNG CN5 1 2 27 CNS CN6 5 6 CN5 2 CSW 71C D ELECTRICAL SCHEMATIC 2 2 XRD38WO375AQ HSER SPRING TASER el rad ca aac de a
16. Using the cryocooler with a non conforming power supply may result in electric shock or malfunction Be sure to turn off and Lock Out with OFF position the main power of the customer s power source before connecting or disconnecting the input power cable to the Compressor Unit and then remove the input power cable from the main power Failing to observe this precaution may result in electric shock Do not change the setting of the dial above the main power switch of the compressor unit under any circumstances Failing to observe this precaution may result in electric shock CAUTION Caution against misoperation gt Do not use inverter for the main power source of the compressor unit Operating with inverter may result in the damage or malfunction of the compressor electric circuit Avoid using the transformer for the main power source of the compressor unit If the transformer is installed at the upstream of the unit lacking phase protection circuit with the cryocooler occurs in a malfunction That may result in misoperation or malfunction When using the transformer install the other lacking phase protection device in upstream of the transformer IMPORTANT This cryocooler is provided with a phase reverse protection circuit for the input power f the input ower is connected with reverse phase the cryocooler does not start IMPORTANT See ELECTRICAL SCHEMATIC of CSW 71C Compressor Unit for detail IMPORTANT See
17. power is connected with reverse phase the cryocooler does not start Prior to starting Cryocooler confirm that the Compressor Unit and the Cold Head are installed correctly as described in Section 2 CHECKING HELIUM GAS PRESSURE Make sure that the static pressure is specified value with supply pressure gauge of the Compressor Unit The static pressure needs to be adjusted for Cold Head as described follows COLD HEAD MODEL STATIC PRESSURE RDK 408D2 4K Cold Head RDK 408D 4K Cold Head RDK 415D 4K Cold Head RDK 408S2 10K Cold Head RDK 408S 10K Cold Head RDK 400B Single Stage Cold Head 1 60 1 70 MPa at 20 deg C 68 deg F 16 3 17 3 kgtf cm G 232 246 psig 1 45 1 55 MPa at 20 deg C 68 deg F 14 8 15 8 kgf cm G 210 225 psig HE It IM IL IM For RDK 408D2 amp 408D amp 415D For RDK 408S2 amp 408S amp 400B CHECKING ELECTRIC POWER VOLTAGE AND PHASE Check the line to line voltage and confirm it is 10 of the specified value to meet the specification described in each TECHNICAL INSTRUCTION for Compressor Unit used Confirm the phase of Input power and cable with correctly wired SRDK Series CRYOCOOLER 37 OPERATION MANUAL Sumitomo Heavy Industries Ltd 3 2 START UP 3 2 START UP OPERATION CAUTION Caution against misoperation gt The cryocooler ON OFF frequency must be less than 6 times per hour and the ON OFF interval must be more than 3 minutes The freq
18. 7 15 8 15 9 16 0 16 16 3 16 4 16 5 16 6 16 7 16 8 16 9 17 0 17 17 3 17 4 17 5 17 6 17 7 17 9 18 0 18 1 1 res 18 618 718 81 18 01 10 0 0 19 1 19 2 19 lanl al enol ala s bree iy ane ey malas 26 2 26 Brie ey nn 2 28 3 28 4 28 2 29 3 29 4 29 2 30 3 30 4 30 420 422 ees r j 1 MPa 10 2 kgf cm2G 1 MPa 114 9 psig wlio io N N N IS lt F o es o o C m S N PP cO w w w N N P w sl 296387 aoe aoo 401 4o as aoo eo o N SRDK Series CRYOCOOLER 10 OPERATION MANUAL 1 INTRODUCTION 1 1 GENERAL INFORMATION Sumitomo Heavy Industries Ltd 1 1 GENERAL INFORMATION This manual provides instructions for initial inspection installation operation and service for the component of SRDK Series Cryocooler system in Table 1 1 Table 1 1 CRYOCOOLER MODELS COVERED IN THIS MANUAL COMPONENT MODEL COLD HEAD RDK 408D2 4K COLD HEAD RDK 408D RDK 415D RDK 408S2 10K COLD HEAD RDK 408S SINGLE STAGE COLD HEAD RDK 400B COMPRESSOR UNIT AIR COOLED Low Voltage CSA 71A WATER COOLED Low Voltage CSW 71C WATER COOLED High Voltage CSW 71D FLEX LINE 20 A x 6 m 19 7 fee
19. Series CRYOCOOLER 50 OPERATION MANUAL Sumitomo Heavy Industries Ltd 6 TROUBLE SHOOTING Case of Trouble The Compressor Unit stoped with the Main Power Switch FLOWA and Drive Switch ON System stopped during normal operation The Compressor Unit stoped with the Main Power Switch tripped FLOW B Ke and Drive Switch ON E Cryocooler will not started gt FLOWB Head Cooling Power is b FLOWC low No intake and exhaustnoise from Cold Head FLOWC Abnormal noise from Cold Head e Abnormal noise Compressor Unit J a N Pressure relief valve operates FLOWD Ni gt FLOWD gt FLOWD SRDK Series CRYOCOOLER 51 OPERATION MANUAL FLOW A Sumitomo Heavy Industries Ltd 6 TROUBLE SHOOTING FLOW CHART In case the Compressor Unit stopped by high temperature it takes from 20 to 60 minutes for thermostat reset and Compressor Unit recovery System stopped during normal operation The Compressor Unit stoped with E the Main Power Switch ON and Drive Switch ON J Reference Compressor Unit Technical Insuruction Section 1 1 x Reference Check the ambient temperature Abnormal Compressor Unit Technical Insuruction Section 1 1 A Control the circumstance to the specified
20. This procedure applies to both male and female couplings on gas lines compressor and cold head 1 Vent the charged component using the venting procedure in this manual or in the Maintenance section of the appropriate manual 2 If the coupling to be repaired has the venting adapter fitting attached remove the adapter fitting Use two wrenches 3 Use two wrenches to disconnect the coupling body from the adapter Hold the adapter with one wrench Remove the coupling body with the other wrench See Figure 7 4 Push the valve assembly from the coupling body It is not fastened Examine all parts and replace any that are damaged or replace the entire coupling half See Figures 6 or 8 Figure 7 Remove Coupling from Gas Line ADAPTER VALVE ASSEMBLY COUPLING ADAPTER i 6 n COUPLING NUT ADAPTER O RING I Figure 8 Aeroquip Female Coupling Parts 5 Remove the O ring from the gas line adapter 6 Wipe the O ring groove to be sure it is clean Lightly coat a new O ring with vacuum grease Install the O ring in the gas line adapter Wipe the valve assembly with a clean lint free cloth Insert the valve assembly into the coupling body from the rear 10 Maintenance Thoroughly degrease or apply Locquic Primer T a degreasing agent to the threads of the adapter and to the internal threads of the coupling body Do not get Primer T on the O ring or any of its seating surfaces Allow about 5 minutes for the primer to dry Apply Loc
21. circumstances Disassembling the equipment may result in electric shock explosion or escape of gas The cold head compressor unit compressor adsorber and flex lines are pressurized with helium gas Purge the helium gas from all pressurized components before disposing Open the purging valve gradually or it may result in serious injury Do not break the vacuum with the low temperature of cold head second stage when removing the cold head from the vacuum chamber Breaking the vacuum may result in serious damage explosion or escape of gas Keep the Flex Lines connected and maintain the high vacuum of the chamber and wait until the cold head second stage temperature rises up to 100K before removing the cold head WARNING Warning about rotating part C If the compressor unit used is the CSA 71A air cooled low voltage type a venting fan is provided in the exhaust section at the top of the compressor unit Do not insert foreign substances from the exhaust port under any circumstances Failing to observe this precaution may result in injury or malfunction WARNING The Adsorber weight is about 11 0kg When replace the adsorber be careful of handling so that it may not get hurt SRDK Series CRYOCOOLER 43 OPERATION MANUAL Sumitomo Heavy Industries Ltd 5 1 GENERAL INFORMATION FOR THE MAINTENANCE CAUTION Caution against misoperation gt Do not get on compressor unit or put an object on top of it Failing to ob
22. gauge indicates less than 1 60 MPa 16 3 kgf cm G 232 psig refill Helium gas as described in TECHNICAL INSTRUCTION of Compressor Unit used If the gauge indicates 0 MPa 0 kgf cm G 0 psig there is a risk of helium contamination and Compressor Unit must be replaced FLEX LINES AND ELECTRICAL CABLES Inspect the Flex Lines for evidence of damage Do not bend the Flex Line to less than a 300 mm 11 81 inch radius or damage may occur Also avoid twisting the Flex Line when making final connections Inspect the Cold Head Power Cable and Input Power Cable for evidence of damage SRDK Series CRYOCOOLER 7 OPERATION MANUAL Sumitomo Heavy Industries Ltd PACKING AND RETURN PACKING AND RETURN Reinstall the caps on all Aeroquip connector to protect from the damage during transportation or shipping Reuse the package that was used for shipping Pack the Compressor Unit and Cold Head securely and properly Attach the caution label to prevent the tilting the Compressor Unit or upside down during transportation If you return the water cooling type compressor unit to Sumitomo Heavy Industries please let out the cooling water SRDK Series CRYOCOOLER 8 OPERATION MANUAL Sumitomo Heavy Industries Ltd REGULATORY REQUIREMENTS REGULATORY REQUIREMENTS The SRDK Series Cryocooler is designed and manufactured in accordance with following standards EC Directives EC EN60204 1 1997
23. line before beginning to disassemble it except when replacing a gasket seal When couplings are frequently disconnected and reconnected it is important to wipe the mating parts threads and faces with a clean lint free tissue or cloth Venting Tools required Adapter fitting with valve 8M Aeroquip P N 5 8217 2 Open end wrenches NOTE Adapter fittings are available as optional accessories from SCAI 1 Disconnect the gas line from the system Install a dust cap on each of the male couplings of the compressor and cold head or on the RF feedthroughs if used in the system 2 Be sure the valve on adapter fitting SK8217A2 is closed If only one coupling on the gas line is to be repaired install the adapter fitting on the good coupling Use two wrenches 3 Slowly open the valve on the adapter fitting to vent the entire charge of helium gas 4 Close the adapter fitting s valve Do not remove the adapter fitting It will be used for gas cleanup and recharging NOTE Gas cleanup and recharging of the gas line are always required if a coupling has been repaired Instead of venting the gas line to atmospheric pressure some operators prefer to connect an adapter fitting and a charge line to the coupling not being repaired to purge the gas line with helium during repair Set the helium gas regulator at 35 kPa 5 psig or less to prevent air from entering the gas line and contaminating it Maintenance Repair Self sealing Couplings
24. motor to malfunction 3 If the motor capsule heat exchanger oil separator or control board require replacement there is additional cost 4 Gasline service 300 each Includes gas cleanup leak check and replace Aeroquip fittings 5 Wooden crates 300 6 Shipping invoice empty wooden crates to us and the shipping the instruments back to us will be send to us separately We will use our credit card to pay for the shipping from here to their Chicago facility The compressor performance will be fully tested prior to sending us Cold head service Raub Roy lt rraub shicryogenics com gt Tasks and Prices 1 Basic Fee for quantity 1 coldhead RDK 408 415 8 700 00 2 Labor 1 day per engineer Included 3 Travel amp Living Expenses Billed at actual Tasks 1 Removal of the expired worn parts of the coldhead a The warm housing and parts contained within which includes valves disc valve stem scotch yoke guide bushings all orings b The 1st and 2nd stage displacer assembly 2 Solvent clean and inspect the cylinder assembly 3 Install a new oring on warm flange 4 Install a completely reconditioned and qualified warm end displacer assembly consisting of the parts listed in 1a amp b above 5 Reassemble the coldhead 6 Perform a gas cleanup on the coldhead 7 Reconnect gaslines 8 Leak check all disturbed joints and final testing of the He compressor UHP 300 Grade 5 helium gas cylinder p
25. of gas and so this should be avoided CAUTION Caution against misoperation gt REED Be sure to check the flat rubber gasket of the self seal coupling of the cold head and compressor unit for dirt dust or to see whether the flat rubber gasket is attached correctly before connecting the flex lines Connecting the flex lines with an abnormal flat rubber gasket setting may cause escape of gas Be sure to start with the flex line on the Return side when connecting the flex lines to the cold head Starting with the flex line on the Supply side may cause misoperation IMPORTANT When connecting the flex lines tighten the self seal coupling nut by hand at the first turn and finally tighten it firmly using 3 wrenches However be careful not to tighten it excessively The maximum allowable tightening torque is 45 Make the connections between the Cold Head and Compressor Unit as follows SRDK Series CRYOCOOLER 24 OPERATION MANUAL Sumitomo Heavy Industries Ltd 2 7 CONNECTING FLEX LINES FUNDAMENTAL The Cold Head can be operated with a rotary valve to control the gas inlet outlet timing of the refrigeration cycle The pressure difference between the supply and the return can be available to get the seal between the rotary valve and the valve plate as shown in the Figure The return pressure must be less than supply pressure in connecting the Flex Line To avoid the malfunction of the Cold Head careful han
26. one wrench Remove the gas line coupling from the cold head coupling with the second wrench See Figure 5 3 Screw a dust cap finger tight on to the cold head coupling GAS LINE EXPANDER GAS LINE EXPANOER COUPLING COUPLING COUPLING COUPLING Figure 4 Break Gas Line Figure 5 Disconnect Gas Line Connection from Cold Head from Cold Head Leak Check Leakage of helium gas is the only likely problem to originate on a gas line Use of a helium mass spectrometer leak detector is recommended If no mass spectrometer is available a liquid leak detector solution may be used on the coupling joints With the gas lines connected to the compressor and to the cold head leak check the connected coupling joints Maintenance The flat gasket in the face of the male coupling seals the joint A leak at this gasket seal can be detected only when a gas line is connected A leak here can be caused by the coupling not fully tightened a worn damaged or missing gasket seal dirt on or under the gasket seal dirt on the female coupling s mating surface damaged parts on either coupling which prevent proper mating or sealing Gas Line Repair Leaks in the helically corrugated metal tubing cannot be repaired Discard the damaged gas line and install a new one Leaks at welded joints require special skills to repair Consult an SCAI Service Center Leaks at the self sealing couplings can be repaired by replacing worn or damaged parts Vent the gas
27. outline view of the Buffer Tank and the Figure 2 2 Buffer Tank interconnecting diagram Connect the Buffer Tank with following procedure Connect the female coupling of Tee Adapter to the male connector of the Compressor Unit for both Supply and Return 2 Place the Buffer Tank at the right side of the Compressor Unit 3 Connect the Tee Adapter and Buffer Tank by two 8A x 1m Flex Line 4 Connect the Flex Lines to the Tee Adapters Do not miss match the Supply and Return marking for both Flex Lines and Compressor Unit SRDK Series CRYOCOOLER 27 OPERATION MANUAL Sumitomo Heavy Industries Ltd 2 7 CONNECTING FLEX LINES 228 g Figure 2 1 SRDK Series CRYOCOOLER OUTLINE VIEW OF THE BUFFER TANK 28 OPERATION MANUAL Sumitomo Heavy Industries Ltd 2 7 CONNECTING FLEX LINES Tee Adapter Compressor Unit HEH EH Buffer Tank N E FON Flex Line N NS SS SS SS e
28. temperature Normal Reference IM Operation Manual Section 4 1 1 x Reference Operation Manual k Section 4 1 1 5 4 Check the Filling pressure Abnormal Adjust the filling pressure Normal Reference Operation Manual Section 4 2 Check the leakage of the flex line connections Reference Operation Manual Section 4 1 1 5 4 Abnormal gt Correct the error s N Bo then orma eference TGSAZIA Adjust the filling pressure Technical Insuruction Section 2 1 For CSA 71A Reference Check the air flow space of Abnormal CSA 71A the Compressor Unit Technical Insuruction Section 2 1 Ensure the enough space Normal V SRDK Series CRYOCOOLER Reference CSA 71A Technical Insuruction C Section 3 1 2 lt For CSA 71A gt Check the dust of heat exchanger Technical Insuruction _Section 3 1 2 Reterence CSA 71A Clean the heat exchanger Normal Reference CSW 71C CSW 71D Technical Insuruction S Section 1 1 lt For CSW 71C D gt Check the cooling water temp flow rate etc Reference CSW 71C CSW 71D Technical Insuruction Section 1 1 Abnormal Correct the error s 2 Reference Compressor Unit Technical Insuruction C Section 3 2 Normal Check the fuses of the Compressor Unit Techn
29. temperature min 4 C 40 F Identification Labels Labels on the gas lines identify their function in the system as follows SUPPLY color coded red Helium gas supply to the cold head from the compressor RETURN color coded green Helium gas return from the cold head to the compressor Separate labels are furnished by SCAI with standard gas lines for the customer to attach to the gas lines See the Installation section in the System manual Specifications Installation Tools Properly sized open end wrenches are needed to install and remove gas lines SCAI can furnish optional one each Wrench 1 open end x 3 4 open end P N SK30017C3 Wrench 1 1 8 open end x 5 8 open end P N SK30017C2 Wrench 1 3 16 open end x 1 3 16 ratchet P N SK30017C1 For MRI systems with an RF shield gas feedthroughs may be furnished for gas line installation through the shield Special wrenches may be required to fit the feedthroughs MAINTENANCE Disconnect Gas Lines WARNING AVOID INJURY Extreme cold can cause frostbite When handling system components be careful not to touch any frosted parts WARNING AVOID INJURY Disconnect gas lines only when the compressor is stopped Disconnecting the cold head while it is cold can create excessively high internal pressure as the gas warms Material failure and uncontrolled pressure release can cause injury AVOID INJURY Use two wrenches when disconnecting a gas line coupling to a
30. temperature of the Cold Head is usually lower than room temperature therefore the system always lose helium gas 4 1 2 ROOM TEMPERATURE Room temperature affects the Cryocooler performance t is highly recommended to keep the room temperature in the specified range See TECHNICAL INSTRUCTION of Compressor Unit used for details COMPRESSOR UNIT MODEL ROOM TEMPERATURE RANGE 5 to 28 deg C 41 to 82 4 deg F A 71A CSW 71C CSW 71D 28 to 35 deg C 82 4 to 95 deg F with 5 Capacity Loss 4 1 3 MAIN POWER PHASE The Cryocooler operates with 3 phase mains frequency The Compressor Units are equipped with phase reverse protection circuit to protect the Compressor Unit from reverse revolution The Compressor Unit will not start in case the main power is reverse phase A procedure for the diagnosis of phase failure for input power caused by miss wiring will be performed if the Compressor Unit cannot be operated as normal in a condition of the Drive Switch ON under the Main Power Switch ON SRDK Series CRYOCOOLER 41 OPERATION MANUAL Sumitomo Heavy Industries Ltd 4 2 HELIUM LEAK 4 2 HELIUM LEAK WARNING Warning about explosion escape of gas This cryocooler cold head compressor unit compressor adsorber flex lines contains a high pressure about 1 62 MPa 16 5 kgf cm G 235 psig helium gas sealed in Hitting the equipment with a sharp edge or touching it with a pointed object may cause expl
31. the equipment or may be hazardous to the physical body of the operator Sumitomo Heavy Industries will provide no guarantee in this case No part of this manual may be reproduced without the consent of Sumitomo Heavy Industries Ltd The use of this manual for other purposes is prohibited SRDK Series CRYOCOOLER 2 OPERATION MANUAL Sumitomo Heavy Industries Ltd SAFETY PRECAUTIONS SAFETY PRECAUTIONS This service manual uses the following signs and expressions to describe items requiring strict observance to prevent injury to the operator and other persons damage to this equipment the customer s equipment and property etc WARNING Indicates a potentially hazardous situation that may cause injury to the operator or people around the equipment in the event of improper handling taking no account of this description When using this equipment be sure to adhere to this description CAUTION CAUTION Indicates a potentially hazardous situation that may result in misoperation malfunction or damage of the customer s equipment etc in the event of improper handling taking no account of this description When using this equipment be sure to adhere to this description SRDK Series CRYOCOOLER 3 OPERATION MANUAL Sumitomo Heavy Industries Ltd SAFETY PRECAUTIONS WARNINGS WARNING lt Warning about electric shock gt This cryocooler includes a high voltage section Touching it may result in electr
32. the Compressor Unit 3 Disconnect the Supply and Return Flex Lines from the Compressor Unit REMOVING THE USED ADSORBER 1 Loosen the screws that hold the compressor side panel and remove the panel 4 2 Disconnect the Adsorber Self Sealing Coupling Use three wrenches 3 Remove the Nut secured the Adsorber to Rear Panel Use two wrenches CSW 71C 24 TECHNICAL INSTRUCTION Sumitomo Heavy Industries Ltd 3 1 PERIODICAL MAINTENANCE 4 Remove the Nut and Washer secured the Adsorber to the base panel of the Compressor Unit LE Na 2 5 CSW 71C 25 TECHNICAL INSTRUCTION Sumitomo Heavy Industries Ltd 3 1 PERIODICAL MAINTENANCE INSTALLING NEW ADSORBER 1 2 3 4 5 6 Set a new Adsorber Secure the Adsorber to the base panel of the Compressor Unit by tightened Nut and Washer Tightening Torque 14 5 Nm Secure the Adsorber to Rear Panel by tightening Nut Tightening Torque 23 Nm Connect the Adsorber Self Sealing Coupling Tightening Torque 50 Nm Sprinkle Liquid Leak Detector on the Flex line connecting coupling in case the bubbling is found tighten the connecting coupling again and re check the leakage Ensure that the pressure gauge indication is specified value for the type of Cold Head Charge the helium gas in case of low pressure indicating Reinstall the panels and secure them by tightening the screws CSW 71C 26 TECHNICAL INSTRUCTION Sumitomo Heavy Industr
33. the other lacking phase protection device in upstream of the transformer Secure enough space around the compressor unit for heat radiation and maintenance Failing to secure enough space may result in misoperation or malfunction See the technical instruction of the compressor unit used for details If the compressor unit used is the CSA 71A air cooled low voltage type sufficient space is required for venting Failing to secure sufficient space may result in misoperation or malfunction See the CSA 714 technical instruction for details If the compressor unit used is the CSA 71A air cooled low voltage type it should be installed in a clean environment Installing it in a dusty environment such as inside a factory will require frequent cleaning of the cooler fins or may result in misoperation or malfunction If the compressor unit used is a water cooled type CSW 71C CSW 71D use cooling water with appropriate temperature flow rate and water quality Using inappropriate cooling water may result in misoperation or malfunction See the technical instruction of the compressor unit used for details If the compressor unit used is a water cooled type CSW 71C CSW 71D do not use the demineralized water for cooling water Using demineralized water for cooling water may result in water leakage or malfunction IMPORTANT See TECHNICAL INSTRUCTION of Compressor Unit used for detail of Site Requirement The Compressor U
34. 2 FOR LIQUID TIGHT CONNECTOR TYPE connector of the Cold Head Cable to the terminal pins on the Cold Head Drive Motor SRDK Series CRYOCOOLER 31 OPERATION MANUAL Sumitomo Heavy Industries Ltd 2 8 COLD HEAD POWER CABLE CONNECTION 21 Connect the ground terminal of the Cold Head Cable green color wire with ring terminal to rear cover of Cold Head Drive Motor SRDK Series CRYOCOOLER 32 OPERATION MANUAL Sumitomo Heavy Industries Ltd 2 8 COLD HEAD POWER CABLE CONNECTION 3 CONVERTING THE COLD HEAD CONNECTION Connect the ground terminal of the Conversion Connector green color wire with ring terminal to rear cover of Cold Head Drive Motor 3 Mountthe Terminal Cover on the Cold Head Motor with securing four 4 screws bw Wi a SRDK Series CRYOCOOLER 33 OPERATION MANUAL Sumitomo Heavy Industries Ltd 2 8 COLD HEAD POWER CABLE CONNECTION CONNECTION TO THE COMPRESSOR UNIT Connect the other end of the Cold Head Power Cable to the Cold Head Power Connector on the rear panel of the Compressor Unit SRDK Series CRYOCOOLER 34 OPERATION MANUAL Sumitomo Heavy Industries Ltd 2 9 INPUT POWER CABLE CONNECTION 2 9 INPUT POWER CABLE CONNECTION Warning about electric shock Make sure the power specification of the cryocooler used conforms to the customer s power supply before using the equipment Using the cryocooler with a non conforming powe
35. 2 2 For CSW 71D gt Check the input power voltage and frequency setting of the Compressor Unit Reference CSW 71D Abnormal Technical Insuruction Sedion22 2 2 Adjust the voltage setting Reference Compressor Unit Technical Insuruction Section 1 1 2 2 Normal Reference Compressor Unit Abnormal Technical Insuruction Section 1 1 2 2 a oS ee Correct the error s eck the user s power source Fuse s circuit breakers capacity and circuit wiring Normal Y Cold Head need to be rapaired Contact to SHI Pressure relief valve operates Reference Operation Manual Section 2 7 Check the flex Abnormal ine connections Correct the error s Reference Operation Manual Section 4 1 1 5 4 Normal y Adjust the filling pressure 4 v Re start the Compressor Unit y In case the failure will be reproduced the system needs to be repaired Contact to SHI 55 OPERATION MANUAL Sumitomo Heavy Industries Ltd 7 OPERATING LOG 7 OPERATING LOG Maintaining a log of the records of the temperature indication and pressure during normal operation is a valuable means for troubleshooting sample operating log is mentioned to Figure 7 1 It is highly advisable to create and maintain a detailed operating log for your Cryocooler
36. 275A See AWG10 52m k 1 1 2 171 U COMPRESSOR 3 4 174 V T m 200V 50 60Hz 5 6 173 FULL LOAD CURR 26 AWG16 1 3mm 2 d e j STARTING CURR 110A AWG 1 0 5 2m 2 BIO AWG 1 0 5 2m2 FU2 BK 5 8 0 TYPE AWG16 1 3mm 2 CLASS G mus de AWG16 1 3mm 2 RD RU COLDHEAD BK KA12 271 be COLDHEAD DRIVE 2724 B J 200V 50 60Hz 1 D FULL LOAD CURR AND STARTING ENS CURR APPROX 0 lt lt lt lt N AW16 1 3am 2 6 c xc x OTT I SA2 COLDHEAD CABLE CN3 KA12 BOARD 17 AWG16 1 3mm 2 5 NK G Y 3 22 OF NOTES 2L1 1 NOT ASSIGNED WIRING SIZE IS AWG22 0 32mm 2 43 22 2 ABBREVIATION OF WIRING COLOR 18 AS FOLLOWS a on ea BK BLACK RD RED AND G Y GREEN WITH YELLOW STRIPES 27 ai 3 WIRING COLOR OF 24V DC CIRCUIT IS BLUE 4 KA2 ij li 6l KAZ RL e AWG18 0 8mm 39K RD AWG16 1 3mm a re ELECTRICAL ND SCHEMATIC CONTROL SOURCE CSW 71C 1 2 D Sub 2 JR PRESSURE ALARM WHEN CONTACT OPENS
37. 95 Applied national standards and technical specifications MITI Directory No 51 UL 471 MITI Japan Ministry of Trade and Industry UL Underwriters Laboratories Inc USA Tokyo 1 November 1999 K fhe bk Kaoru Aoki Manager Design Section Cryogenics Department Sumitomo Heavy Industries Ltd OPERATION MANUAL Sumitomo Heavy Industries Ltd TABLE OF CONTENTS TABLE OF CONTENTS SECTION ITEM PAGE No CROSS REFERANCE BEFORE USING EQUIPMENT SAFETY PRECAUTIONS INSPECTION PACKING AND RETURN REGULATORY REQUIREMENTS PRESSURE UNIT CONVERSION TABLE oo N 11 1 1 11 1 2 12 1 3 14 INSTALLATION GENERAL TOOLS FOR INSTALLATION 2 3 MOVING SITE REQUIREMENT 2 4 1 REQUIRED FOR AIR COOLED COMPRESSOR UNIT 2 4 2 REQUIRED FOR WATER COOLED COMPRESSOR UNIT 2 5 COLD HEAD INSTALLATION 2 6 COMPRESSOR UNIT INSTALLATION 2 7 CONNECTING FLEX LINES 2 8 COLD HEAD POWER CABLE CONNECTION A o N e N eo m ARN Co _ E 34 37 3 2 38 4 41 41 42 42 SRDK Series CRYOCOOLER OPERATION MANUAL Sumitomo Heavy Industries Ltd TABLE OF CONTENTS 6 TROUBLE SHOOTING FLOW CHART 48 7 OPERATING LOG 55 REVISION CONTROL SRDK Series CRYOCOOLER OPERATION MANUAL Sumitomo Heavy Industries Ltd CROSS REFERENCE CROSS REFERENCE Thoroughly
38. ACTERISTICS pH Value 6 5 to 8 2 at 25 deg C Electrical Conductivity lt 80mS m Chloride lon lt 200 mg liter Sulfate lon lt 200 mg liter M Alkalinity lt 100 mg liter Total Hardness lt 200 mg liter Calcium Hardness lt 150 mg liter lonic Silica lt 50 mg liter Iron lt 1 0 mg liter Copper lt 0 3 mg liter Sulfide lon None Not detectable Ammonium ion lt 1 0 mg liter Residual Chlorine lt 0 3 mg liter Free Carbon Dioxide lt 4 0 mg liter Stability Index 6 0 to 7 0 Suspended Matter lt 10 mg liter Particle Size lt 100 um QUALITY CSW 71C 4 TECHNICAL INSTRUCTION Sumitomo Heavy Industries Ltd 1 1 SPECIFICATIONS 500 19 7 5 6 3 RAM OU MI E H CO I Figure 1 2 OUTLINE VIEW FOR COMPRESSOR UNIT MODEL CSW 71C 5 CSW 71C TECHNICAL INSTRUCTION Sumitomo Heavy Industries Ltd 1 2 CONSTRUCTION 1 2 CONSTRUCTION The function of the Compressor Unit is to supply high pressure He gas to the Cold Head and re compress the returned He gas from the Cold Head The Compressor Unit consists of the following major components a Compressor Capsule a Cooling system Oil separation and injection system and Adsorber 1 2 1 CONTROLS AND COUPLINGS The controls and coupling for C
39. DK SERIES CRYOCOOLER ES Cooling Air Flow xd mE Cold Head Supply Flex Line Power Cable yellow mark Cold Head Return Flex Line green mark Input Power Cable Air Cooled Compressor Unit AIR COOLED SYSTEM Cold Head Supply Flex Line Power Cable yellow mark Cold Head Cooling Water Flow Return Flex Line N green mark TN gt Input Power Cable Water Cooled Compressor Unit WATER COOLED SYSTEM Figure 1 1 SRDK SERIES CRYOCOOLER SYSTEM SRDK Series CRYOCOOLER OPERATION MANUAL Sumitomo Heavy Industries Ltd 1 3 THEORY OF OPERATION 1 3 THEORY OF OPERATION The SUMITOMO Helium Refrigerator operates on the GM Gifford McMahon cycle The GM cycle is shown schematically in Figure 1 2 and consisted of a cylinder closed at both ends and containing a displacer of a length about three quarters of the cylinder The displacer is connected to a drive mechanism so that it can be operated reciprocating action in the cylinder The two volumes one for above and another for below the displacer can be varied from zero to maximum but the total volume remains constantly Compressor Outlet Valve Inlet Valve Regenerator Disp
40. HE GAS COOLER and cooled down in the cooler The high pressure He gas after cooling will flow into an OIL SEPARATOR to separate an almost all of lubricating oil mist from the high pressure He gas The separated lubricating oil can be returned to the COMPRESSOR CAPSULE through a lub oil return pipings The high pressure He gas discharged from the OIL SEPARATOR will be led to an ADSORBER The remained lub oil contents in the high pressure He gas can be adsorbed through an active charcoal layer to make the high pressure He gas being pure The pure high pressure He gas can be supplied to the Cold Head through a HE GAS SUPPLY CONNECTOR CSW 71C 9 TECHNICAL INSTRUCTION Sumitomo Heavy Industries Ltd 1 2 CONSTRUCTION W E T e d OIL INJECTION 2 2 9 m z qe m mE OM HEAD XO D qt bes TS1 0 d gt x I COL 152 D q D A RD 2 OL RETURN OIL LINE He GAS LINE LL COOLING WATER Figure 1 4 HELIUM GAS FLOW DIAGRAM FOR CSW 71C COMPRESSOR UNIT CSW 71C 10 TECHNICAL INSTRUCTION Sumitomo Heavy Industries Ltd 1 2 CONSTRUCTION 1 2 3 INTERNAL COMPONENTS The parts list and its functions are described in Table 1 4 The He gas flow diagram and internal components are shown in Figure 1 4 and Figure 1 5 Table 1 4 FUNCTIONS OF
41. He Compressor and Cold Head Service The AMI magnet 6T in Osujilab is cryo cooled by continuous Helium supply by a Sumitomo Compressor operating at a pressure of 2 2 MPa The superconductor in the magnet is cryo cooled by a cold head Sumitomo Inc attached to the magnet Continuous Helium supply is necessary to maintain the superconductivity in the system There are two flux lines supply and return 6m long connecting the He compressor and the cold head The flux lines cold head and the compressor have self locks to isolate them to avoid contamination When flux lines are disassembled from the cold head or He compressor the locks will automatically be locked When the pressure in the He compressor goes below 1 6 MPa the compressor should be re filled with Helium UHP 300 99 999 purity Please follow the instructions before start refilling the He compressor If the He compressor or flux lines are contaminated the pressure reading in the He compressor will drop usually it will be zero also when the He gas leaks out of the system Once the system is contaminated it is advised to get in touch with Sumitomo Inc to do a cleaning service Mistakenly opened screws Figure1 a Zero pressure reading due to contamination of the system In this case the He gas was escaped through accidently loosened screws b During operation the pressure reading is about 2 2 2 MPa However when the He compressor or is switched off the pressure reading is
42. ILD UP Outlet Valve With the displacer at the bottom of the cylinder and the outlet valve closes and the inlet valve opens increasing the pressure level in the system Fluid will be led through the inlet valve to fill the regenerator and the space above the displacer volume 1 Regenerator Inlet Valve Volume 1 Displacer PRESSURE BUILD UP INTAKE STROKE With the inlet valve open the displacer is moved from the bottom to the top of the cylinder This displaces high pressure fluid from the space above the displacer volume 1 through the regenerator to the space below the displacer volume 2 In passing through the regenerator the gas cools causing the pressure to decrease and further gas to enter the system to maintain the maximum cycle pressure PRESSURE RELEASE AND EXPANSION With the displacer at the top of the cylinder the inlet valve closes and outlet valve opens Fluid escapes and the pressure will decrease The drop in pressure causes a reduction in the gas temperature level The temperature decrease of gas in the bottom cylinder space volume 2 is the useful refrigeration process of the cycle EXHAUST STROKE With outlet valve open the displacer moves from the top to bottom of the cylinder displacing fluid from volume 2 below to volume 1 above the displacer As it flows through the regenerator the fluid is heated to near ambient temperature by the matrix This process can be produced the coo
43. S3 LOW PRESSURE SWITCH PSL CSW 71C 14 TECHNICAL INSTRUCTION Sumitomo Heavy Industries Ltd 2 INSTALLATION 2 INSTALLATION WARNING Warning about electric shock This cryocooler includes a high voltage section Touching it may result in electric shock Handle it with extreme care Make sure no power is applied to the compressor unit before starting the installation Failing to observe this precaution may result in electric shock Do not install the equipment near places subject to condensation such as a watering place Failing to observe this precaution may result in electric shock or malfunction Do not install the equipment in a dusty environment Failing to observe this precaution may result in electric shock or malfunction Make sure the power specification of the cryocooler used conforms to the customer s power supply before using the equipment Using the cryocooler with a non conforming power supply may result in electric shock or malfunction If the compressor unit used is the CSW 71D water cooled high voltage type pay attention to the setting of the applicable input supply voltage The product is shipped with the input supply voltage set to 480V Before installing the equipment be sure to check your supply voltage and change it to the appropriate setting if necessary Operating the equipment with your supply voltage different from the setting of the compressor unit may result in electric shock or malfuncti
44. SW 71C are described in Table 1 3 and Figure 1 3 Table 1 3 CONTROLS AND COUPLINGS FOR CSW 71C COMPRESSOR UNIT No ITEM FUNCTIONS MAIN POWER SWITCH QF1 A twist handle for main electric power supply and for protection from i over current and short circuit A seesaw switch for start up and shut down operation for the compressor unit The refrigerating system can be in a operating condition by the DRIVE SWITCH ON after switching the MAIN POWER SWITCH ON condition A switch for operating the COLD HEAD maintenance only Under the MAIN POWER SWITCH ON and the DRIVE SWITCH OFF Caution Be sure to turn it OFF in normal operation Using the compressor unit with the cold head drive switch turned ON DRIVE SWITCH SA1 COLD HEAD DRIVE SWITCH SA2 may result in misoperation or malfunction REMOTE DRIVE SWITCH The compressor unit can be operated remotely with the external control SA3 by switching EXT and cannot be started up in condition of switching EXT after the Drive Switch operated B To indicate an Open Shut condition of the Solenoid Valve YV INDICATING LAMP HL Solenoid Valve Shut the Lamp ON Open the Lamp OFF To indicate a filled He gas pressure in the compressor unit during not in SUPPLY PRESSURE GAUGE _ operation of the compressor unit and a compressed He gas pressure Supply Pressure can be indicated under the operating condition counting will be referr
45. Stage Cold Head Shut the valve of gas charging tool and pressure regulator Disconnect the charging line and gas charging tool from the Compressor Unit Set the protective cap to gas charge coupling on the Compressor Unit SRDK Series CRYOCOOLER 47 OPERATION MANUAL Sumitomo Heavy Industries Ltd 6 TROUBLE SHOOTING FLOW CHART 6 TROUBLE SHOOTING FLOW CHART WARNING Warning about electric shock gt REC IEEE This cryocooler includes a high voltage section Touching it may result in electric shock Handle it with extreme care Make sure no power is applied to the compressor unit before starting operation when connecting or disconnecting the cold head power cable Failing to observe this precaution may result in electric shock Be sure to turn off and Lock Out with OFF position the main power of the customer s power b connecting or disconnecting the input power cable to the Compressor Unit and then remove the input power cable from the main power Failing to observe this precaution may result in electric shock Pay special attention to its wiring when using the external connector on the compressor unit Connecting a jumper wire between Pins No 6 No 8 No 6 No 13 and No 6 No 15 may result in misoperation in some of safety devices in the equipment causing electric shock burn or malfunction Be sure to turn off and Lock Out with OFF position the customer s main power before performing maintenance work such as replacemen
46. THE INTERNAL COMPONENTS FOR CSW 71C COMPRESSOR UNIT PARTS FUNCTIONS OIL CHARGE CONNECTOR To use for refilling a lubricating oil FILTER To eliminate contaminators and debris from a recirculating lub oil To eliminate contaminators and debris from a He gas suction for a FILTER Compressor Capsule HE GAS RETURN CONNECTOR use for connecting a Flex Line for Return He gas line STORAGE TANK A He gas reservoir for piping to Compressor Capsule SOLENOID VALVE An electro magnetic operation valve for He gas piping RELIEF VALVE To keep a maximum high pressure for the He gas piping safely ADSORBER To use for eliminating a remained oil mist in the compressed He gas after treatment by the Oil Separator HE GAS SUPPLY CONNECTOR To use for connecting a Flex Line for Supply He gas line HE GAS CHARGE CONNECTOR To use for charging and refilling a He gas OIL SEPARATOR eliminate oil contamination from the compressed He gas OIL COOLER water cooled type heat exchanger for recirculating lub oil COMPRESSOR CAPSULE A He gas compressed for the unit THERMOSTAT TS1 A thermal sensor amp controller for the compressed He gas temperature of 110 deg C compressor outlet HE GAS COOLER A water cooled type heat exchanger for compressed He gas THERMOSTAT TS2 A thermal sensor amp controller for the compressed He gas temperature of 60 deg C He gas cooler outlet Separator PRESSURE GAUGE To indicate a filled He gas pressure and compr
47. TION 15 2 1 SITE REQUIREMENT 17 2 2 INPUT POWER CABLE CONNECTION 19 3 MAINTENANCE 21 3 1 PERIODICAL MAINTENANCE 22 1 1 REPLACEMENT OF THE COMPRESSOR ADSORBER FUSE REPLACEMENT p N APPENDIX 28 ELECTRICAL SCHEMATIC DRAWINGS REVISION CONTROL CSW 71C TECHNICAL INSTRUCTION Sumitomo Heavy Industries Ltd CROSS REFERENCE CROSS REFERENCE Thoroughly read this manual and following manuals before using this equipment MANUAL NAME MANUAL No OPERATION MANUAL SRDK Series CRYOCOOLER CD32ZZ 063 TECHNICAL INSTRUCTION RDK 408D2 4K COLD HEAD CD32ZZ 160 TECHNICAL INSTRUCTION 40852 10K COLD HEAD CD32ZZ 161 TECHNICAL INSTRUCTION RDK 408S 10K COLD HEAD 03222 065 TECHNICAL INSTRUCTION RDK 400B SINGLE STAGE COLD HEAD CD32ZZ 066 TECHNICAL INSTRUCTION RDK 415D 4K COLD HEAD CD32ZZ 070 See TECHNICAL INSTRUCTION of Cold Head used CSW 71C 1 TECHNICAL INSTRUCTION Sumitomo Heavy Industries Ltd 1 1 SPECIFICATIONS 1 GENERAL INFORMATION 1 1 SPECIFICATIONS The specifications of CSW 71C Helium Compressor Unit are summarized in Table 1 1 Table 1 1 CSW 71C COMPRESSOR UNIT SPECIFICATION o forRDK 408D2 4150 forRDK 408S2 4085 400B Dimension Width 450 0 mm 500 0 mm 686 5 mm Helium Gas Pressure Static 1 60 1 66 MPa at 20 deg C 1 45 1 50 MPa at 20 deg C Operating High Side 2 00 2 20 MPa approx 2 00 2 20 MPa approx for Reference Ambient Temperature Range 5 to 35 d
48. V Power Stop OV DC Output 24V DC 0 15A max Power when Main Power SW is ON 5 1 Digital Volt Ohm Meter Reading Pulsed 24VDC for 1 second nm manana ew _ 7 6 5 4 3 2 1 15 14 13 12 11 10 9 Figure 1 5 EXTERNAL CONNECTOR WIRING ON THE COMPRESSOR UNIT CSW 71C 13 TECHNICAL INSTRUCTION Sumitomo Heavy Industries Ltd 1 3 ELECTRICAL DESCRIPTION 1 3 2 SAFETY DEVICES The safety devices list for Compressor Unit is shown in Table 1 6 Table 1 6 SAFETY DEVICES OF CSW 71C ITEM FUNCTIONS Setting temperature 110 deg C approx To shut down the Compressor Unit and signal a high temperature alarm to the External Connector in case of higher temperature of a compressed He gas at a compressor outlet than the setting temperature Setting temperature 60 deg C approx To shut down the Compressor Unit and signal a high temperature alarm to the External Connector in case of higher temperature of a compressed He gas at a He gas cooler outlet than the setting temperature Setting temperature 60 deg C approx To shut down the Compressor Unit and signal a higher temperature alarm to the External Connector in case of higher temperature of a water at a cooling water outlet than the setting temperature SOLENOID VALVE YV To stabilize a pressure for even of He gas between the Supply and Return piping at a shut off the Compres
49. amination when charging a helium gas The contamination may result in occurrence of the noise from the Cold Head or decreasing the cooling capacity CSW 71C 16 TECHNICAL INSTRUCTION Sumitomo Heavy Industries Ltd 2 1 SITE REQUIREMENT 2 1 SITE REQUIREMENT CAUTION Caution against misoperation gt Do not use inverter for the main power source of the compressor unit Operating with inverter may result in the damage or malfunction of the compressor electric circuit Avoid using the transformer for the main power source of the compressor unit If the transformer is installed at the upstream of the unit lacking phase protection circuit with the cryocooler occurs in a malfunction That may result in misoperation or malfunction When using the transformer install the other lacking phase protection device in upstream of the transformer Secure enough space around the compressor unit for heat radiation and maintenance Failing to secure enough space may result in misoperation or malfunction See the technical instruction of the compressor unit used for details If the compressor unit used is a water cooled type CSW 71C CSW 71D use cooling water with appropriate temperature flow rate and water quality Using inappropriate cooling water may result in misoperation or malfunction See the technical instruction of the compressor unit used for details If the compressor unit used is a water cooled type CSW 71C CSW 71D do not use the
50. ated area otherwise it may result in asphyxiation in case the helium gas is purged or leaked Do not put the heat sensitive or flammable object neat the Compressor Unit or result in fire injury or malfunction of the WARNING system sa CSW 71C 15 TECHNICAL INSTRUCTION Sumitomo Heavy Industries Ltd 2 INSTALLATION CAUTION Caution against misoperation gt Do not tilt it by more than 30 degrees when carrying the compressor unit Tilting it by more than 30 degrees may cause oil sealed in the unit to move preventing the cryocooler from operating normally This cryocooler is intended for the exclusive use indoors It cannot be used outdoors Failing to observe this precaution may prevent the cryocooler from operating normally Do not use inverter for the main power source of the compressor unit Operating with inverter may result in the damage or malfunction of the compressor electric circuit Avoid using the transformer for the main power source of the compressor unit If the transformer is installed at the upstream of the unit lacking phase protection circuit with the cryocooler occurs in a malfunction That may result in misoperation or malfunction When using the transformer install the other lacking phase protection device in upstream of the transformer Do not get on the compressor unit or put an object on top of it Failing to observe this precaution may prevent the cryocooler from operating normally or cause injury Se
51. ay prevent the cryocooler from operating normally or cause injury Secure enough space around the compressor unit for heat radiation and maintenance Failing to secure enough space may result in misoperation or malfunction See the technical instruction of the compressor unit used for details If the compressor unit used is the CSA 71A air cooled low voltage type sufficient space is required for venting Failing to secure sufficient space may result in misoperation or malfunction See the CSA 71A technical instruction for details The procedures including the inspection and installation of the Compressor Unit will be mentioned below SRDK Series CRYOCOOLER 22 OPERATION MANUAL Sumitomo Heavy Industries Ltd 2 6 COMPRESSOR UNIT INSTALLATION INSPECTION Prior to the installation inspect the Compressor Unit as describe below Inspect the compressor overall exterior for damage and evidence of oil leakage 20 Make sure that the static pressure is specified value with supply pressure gauge of the Compressor Unit The static pressure needs to be adjusted for the type of Cold Head as described follows RDK 408D2 1 60 1 65 MPa at 20 deg C 68 deg F RDK 408D 16 3 16 8 kgf cm G 232 239 psig RDK 415D RDK 40882 1 45 1 50 MPa 20 deg C 68 deg F RDK 408S 14 8 15 3 kgf cm G 210 217 psig RDK 400B If the gauge reads less than specified value refill Helium gas as described i
52. ccurrence of the noise from the Cold Head or decreasing the cooling capacity SRDK Series CRYOCOOLER 6 OPERATION MANUAL Sumitomo Heavy Industries Ltd INSPECTION INSPECTION IMPORTANT If any irrecoverable damage is found by a test at the time of reception of the equipment described in this service manual please contact Sumitomo Heavy Industries The Cryocooler Model SRDK Series should be thoroughly inspected for evidence of damage upon receipt Proceed as follows to unpack and check the shipping damages as soon as you receive it Inspect the outside of each shipping container for visible damage If you will be making a damage claim keep the shipping container packing materials 21 Carefully unpack the Cold Head Compressor Unit Flex Lines and Cables and inspect them for damage COLD HEAD Inspect the exterior of the Cold Head for evidence of damage a Overall exterior b Bent or dent of cylinder c Mounting flange and its sealing surfaces COMPRESSOR UNIT The compressor should not be tilted by more than 30 degree at any time Tilting the Compressor Unit upside down causes damage of compressor capsule or oil contamination of the Helium gas line Inspect the exterior of the Compressor Unit for evidence of damage a Overall exterior b Oil leakage c Filling pressure The pressure gauge will be indicated 1 60 1 65 MPa 16 3 16 8 kgf cm G 232 239 psig minimum at 20 deg C 68 deg F If the
53. clean the heat exchanger once a year However if the room is dirty and or dusty it will be required to clean the heat exchanger more than once a year FOR WATER COOLED COMPRESSOR The Compressor requires cooling water The quality of the cooling water should meet the specification described TECHNICAL INSTRUCTION of Compressor Unit used It can be required to clean the cooling water line inside outside the Compressor if the cooling water is insufficient SRDK Series CRYOCOOLER 45 OPERATION MANUAL Sumitomo Heavy Industries Ltd 5 4 HELIUM GAS CHARGING 5 4 HELIUM GAS CHARGING WARNING Warning about explosion escape of gas This cryocooler cold head compressor unit compressor adsorber flex lines contains a high pressure about 1 62 MPa 16 5 kgf cm G 235 psig helium gas sealed in Hitting the equipment with a sharp edge or touching it with a pointed object may cause explosion or escape ofgas Handle the equipment with extreme care CAUTION Caution against misoperation gt Pay attention to the contamination when charging a helium gas The contamination may result in occurrence of the noise from the Cold Head or decreasing the cooling capacity IMPORTANT The filling pressure of the cryocooler varies in accordance with the compressor and coldhead temperature sure the cryocooler is powered off and compressor and coldhead temperatures almost same as room temperature bef
54. ctric shock Be sure to turn off and Lock Out with OFF position the main power of the customer s power source before connecting or disconnecting the input power cable to the Compressor Unit and then remove the input power cable from the main power Failing to observe this precaution may result in electric shock Do not change the setting of the dial above the main power switch of the compressor unit under any circumstances Failing to observe this precaution may result in electric shock Be sure to turn off and Lock Out with OFF position the customer s main power before performing maintenance work such as replacement of fuses Failing to observe this precaution may result in electric shock WARNING Warning about explosion escape of gas This cryocooler cold head compressor unit compressor adsorber flex lines contains a high pressure about 1 62 MPa helium gas sealed in Hitting the equipment with a sharp edge or touching it with a pointed object may cause explosion or escape of gas Handle the equipment with extreme care Do not disassemble the equipment for purposes other than maintenance specified in this service manual under any circumstances Disassembling the equipment may result in electric shock explosion or escape of gas The cold head compressor unit compressor adsorber and flex lines are pressurized with helium gas Purge the helium gas from all pressurized components before disposing Open the purging valve gradually or
55. cure enough space around the compressor unit for heat radiation and maintenance Failing to secure enough Space may result in misoperation or malfunction See the technical instruction of the compressor unit used for details If the compressor unit used is a water cooled type CSW 71C CSW 71D use cooling water with appropriate temperature flow rate and water quality Using inappropriate cooling water may result in misoperation or malfunction See the technical instruction of the compressor unit used for details If the compressor unit used is a water cooled type CSW 71C CSW 71D do not use the demineralized water for cooling water Using demineralized water for cooling water may result in water leakage or malfunction See the technical instruction of the compressor unit used for details Be sure to check the flat rubber gasket of the self seal coupling of the cold head and compressor unit for dirt dust or to see whether the flat rubber gasket is attached correctly before connecting the flex lines Connecting the flex lines with an abnormal flat rubber gasket setting may cause escape of gas This cryocooler cold head compressor unit compressor adsorber flex lines is shipped with a helium gas at about 1 62 MPa sealed in Be sure to adjust the pressure to an appropriate value according to the cold head used before operating the equipment Using the cryocooler at an improper pressure may cause misoperation Pay attention to the cont
56. d MANUAL NUMBER 03222 0631 DATE December 18 2003 OPERATION MANUAL SRDK Series CRYOCOOLER For Service Personnel Only Sumitomo Heavy Industries Ltd Cryogenics Division 2 1 1 Yato cho Nishitokyo City Tokyo 188 8585 Japan TEL 81 424 68 4240 FAX 81 424 68 4219 E mail cryo shi co jp URL http www shi co jp cryopage 6 SHI Sumitomo Heavy Industries Ltd EC DECLARATION OF CONFORMITY We Sumitomo Heavy Industries Itd declare herewith that the cryocooler listed below on the basis of its design and engineering as well as in the embodiment which we have placed on the market comply with the applicable safety and health requirements set forth in EC directives This declaration becomes invalid if modifications are made to the product without consultation with us Designation of the Cryocooler Cryocooler Model SRDK series Consists of Cold Head Model RDK 408D RDK 408S RDK 400B RDK 415D Compressor Unit Model CSA 71A CSW 71C CSW 71D Tokyo 1 November 1999 7 TE Uma Tatsuo Koizumi General Manager Cryogenics Department Sumitomo Heavy Industries Ltd The products comply with the following council directives Machinery 98 37 EC Low Voltage 73 23 EMC 89 336 EEC 92 31 EEC Amendment Directive 93 68 EEC Applicable standards Machinery EN60204 1 1997 Low Voltage EN61010 1 1993 A2 EMC EN55011 1991 EN50082 2 19
57. demineralized water for cooling water Using demineralized water for cooling water may result in water leakage or malfunction See the technical instruction of the compressor unit used for details An almost level and even area in the field will be selected to install the Compressor Unit An area to be influenced by splashing water and or dusts will not be selected to install the Compressor Unit installation area A clean environmental condition without dirt and or free from an exhausted heat will be selected to install the Compressor Unit in the field A quality of cooling water will be secured to use for an appropriate coolant for the Compressor Unit Any heat sensitive object cannot be positioned on surroundings of the Compressor Unit AMBIENT TEMPERATURE CONDITION The ambient temperature must be between 5 deg C and 28 deg C to get the specified capacity The system can operate up to 35 deg C with less than 596 cooling capacity down The maximum relative air humidity is 85 RH HELIUM SUPPLY SYSTEM A helium supply system is necessary if you need to decontaminate the helium gas or charging the helium gas that has leaked out of the system helium supply system includes a Grade 5 99 999965 up pure helium gas bottle a regulator an outlet valve and a charging hose or equivalent delivery line POWER SOURCE Ensure the correct AC power source is available for the compressor See Table 1 1 for the power requirements for you
58. dling must be taken in connecting Flex Line In case the Cold Head will be operated with miss connected flex lines for example Supply line to Return connector and Return line to Supply connector the Rotary Valve will be pushed back by the Supply pressure and the Cold Head will malfunction with no intake exhaust noise Rotary Valve Bearing 4 Return Pr LI lt 4 Supply P Supply P Valve Plate upply Ps L upply Ps To Displacer NORMAL CONDITION Ps gt ABNORMAL CONDITION Ps CONNECTING PROCEDURE Remove all protective caps of the supply and return Flex Lines Cold Head and Compressor Unit 21 Check all the flat rubber gaskets of self sealing connectors to make sure of being clean and properly positioned SRDK Series CRYOCOOLER 25 OPERATION MANUAL Sumitomo Heavy Industries Ltd 2 7 CONNECTING FLEX LINES Connect the Flex Lines both Supply and Return to the Compressor Unit 4 Connectthe Flex Lines to the Cold Head as follows 1 First connect the Return Flex Line SRDK Series CRYOCOOLER 26 OPERATION MANUAL Sumitomo Heavy Industries Ltd 2 7 CONNECTING FLEX LINES CONNECTING PROCEDURE in case of using the Buffer Tank In case of using the Buffer Tank insert the Buffer Tank between the Compressor Unit and Flex Lines Refer to the Figure 2 1
59. e Once the cold head is carefully removed from the magnet it has to be kept in a holder shield provided by the Sumitomo and keep it safely The old cold head should be sending back to Sumitomo Figure 4 a A top view of magnet helium chamber after removing the cold head c New replacement coldhead already cleaned by the Sumitomo The coldhead can be taken out from the casing by unscrewing the 4 large hex screws same screws are being used to attach to the magnet When we request exchange of cold head in the future we will receive the same fully tested coldhead with attachments from Sumitomo When it is taken out we need to purge it with He gas Also the inner portion a of the magnet also should be purged for some time with low pressure He gas before assembling the cold head to the magnet c The refurbished cold head sent by Sumitomo will be filled with He gas therefore it has to be vent before start connecting to the magnet Youngwoo Figure 5 a The magnet chamber was cleaned with Kim wipe ethanol and then subsequently purging with He gas prior to attaching the cold head b Disassembling the refurbished cold head from the casing by unscrewing the 4 hex screws After connecting cold head to the magnet it has to be purged with He gas prior to re connecting the flux lines otherwise the flux lines and the He compressor will be contaminated Figure 6 a The He compressor is powered off b The main power is turned bac
60. ed for maintenance interval To use for connecting of input power supply cable At a connecting power cable verify the phase label markings L1 L2 and L3 The compressor unit cannot be operated in case of miss connecting the power cable GROUND TERMINAL PE A connector for the earth wiring and verify the tight connecting for earth wiring as well as Input Power Cable FIELD TERMINAL TBO CSW 71C 6 TECHNICAL INSTRUCTION Sumitomo Heavy Industries Ltd 1 2 CONSTRUCTION Table 1 3 CONTROLS AND COUPLINGS FOR CSW 71C COMPRESSOR UNIT Continued COLD HEAD CONNECTOR use for connecting the Cold Head Cable to supply Cold Head JC driving power To use for the external signal output of condition monitoring for the compressor unit The connector to be D Sub 15 Pins Female type in use EXTERNAL CONNECTOR Warning Pay special attention to its wiring when using the external connector on JR the Compressor Unit Connecting a jumper wire between Pins No 6 No 8 No 6 No 13 No 6 No 15 may result in misoperation in some of safety devices in the equipment causing electric shock burn or malfunction HE GAS SUPPLY CONNECTOR To use for connecting a Flex Line for Supply He gas line HE GAS RETURN CONNECTOR To use for connecting a Flex Line for Return He gas line HE GAS CHARGE CONNECTOR To use for charging and refilling a He gas COOLING WATER INPUT 3 CONNECTOR A connector for cooling water
61. eg C 28 to 35 deg C with 596 Capacity Loss Humidity Range 25 to 85 RH without dew Mass 117kg approx Electrical Requirement Power Line Voltage AC 200V 50 60 Hz 3 phase 3W PE 10 delta ground Commercial Power Source WARNING Do not use inverter for the main power source Operating Current Max 25A Min Circuit Ampacity 35A Max Fuse or 60A Circuit Breaker Size Power Requirement Minimum 9 kVA Recommended 12 kVA Power Consumption 8 3kW Steady State 7 5kW at 60Hz 7 2kW Steady State 6 5kW at 50Hz See the ELECTRICAL SCHEMATIC of APPENDIX for detail Cooling water requirement CAUTION Do not use the demineralized water for cooling water Temperature Range 4 to 28 deg C See the Figure 1 1 and Table 1 2 Flow Rate 7 to 10 liter min at 28deg C See the Figure 1 1 and Table 1 2 Quality See the Table 1 2 Pressure Relief Valve Setting 2 61 2 75 MPa Gas Supply Connector 1 2 inch Coupling Gas Return Connector 1 2 inch Coupling Input Power Cable Terminal Cover is 98 0 mm See the Figure 1 2 The operating pressure varies according to the heat load of cold head and temperature around the equipment CSW 71C 2 TECHNICAL INSTRUCTION COOLING WATER REQUIREMENT Sumitomo Heavy Industries Ltd 1 1 SPECIFICATIONS The typical flow characteristics are shown in Figure 1 1 and cooling water requirement are shown in Table 1 2 For Water Cooling Wate
62. essed He gas pressure of the unit HIGH SIDE PRESSURE A pressure sensor for compressed He gas pressure control SWITCH PSH P ISR ORIFICE To use for adjusting a recirculating lub oil flow LOW SIRE FRESSURE A pressure sensor for compressed He gas pressure control SWITCH PSL P P ala i THERMOSTAT TS3 60 deg C outlet SOOFING ATERSINLET To use for connecting a cooling water piping for War Supply CONNECTOR 9 PES E COOLING WATER OUTLET 2T i 27 CONNECTOR To use for connecting a cooling water piping for Water Discharge CONTROL BOX An electronic control surveillance and alarming system for the He gas Compressor Unit sala x o 3 2 o 2 3 2 o 5 o 2 0 o o 3 c o 3 o Q gt gt 3 n 2 o o go o 3 S gt o 0 3 75 5 o ES e 5 KES 5 5 Eg 10 1 12 13 A CSW 71C 11 Sumitomo Heavy Industries Ltd TECHNICAL INSTRUCTION 1 2 CONSTRUCTION e 9 Figure 1 5 COMPONENTS OF CSW 71C COMPRESSOR UNIT 12 CSW 71C TECHNICAL INSTRUCTION Sumitomo Heavy Industries Ltd 1 3 ELECTRICAL DESCRIPTION 1 3 ELECTRICAL DESCRIPTION 1 3 1 EXTERNAL CONNECTOR WARNING Warning about electric sh
63. frequency setting of the Compressor Unit Reference Normal Compressor Unit Section 1 3 2 Remort operation Technical Insuruction Operation Manual 1 4 Technical Insuruction Reference Operation Manual Section 4 1 3 4 1 4 Compressor Unit Section 2 2 Abnormal Technical Insuruction Technical Insuruction Abnormal Technical Insuruction Abnormal Technical Insuruction Correct the error s Reference Compressor Unit Technical Insuruction Section 3 2 N Replace the fuse s Reference Compressor Unit Technical Insuruction Section 1 1 2 2 Correct the error s Reference CSW 71D Abnormal Technical Insuruction Section 2 2 M 2 Adjust the voltage setting Reference For CSW 71C D gt Check the Remort Drive Switch position INT Compressor Unit Technical Insuruction Section 1 3 2 Compressor Unit need to be rapaired Contact to SHI Check the customer s remort circuit Over current caused by short circuit etc Normal Y with external terminal use not use Compressor Unit need to be rapaired Contact to SHI EXT In case the remort operation does not required awitch to INT position Correct the error s 53 OPERATION MANUAL FLOW C Sumitomo Heavy Industries
64. h voltage section Touching it may result in electric shock Handle it with extreme care Make sure no power is applied to the compressor unit before connecting or disconnecting the cold head power cable Failing to observe this precaution may result in electric shock Be sure to turn off and Lock Out with OFF position the main power of the customer s power source before connecting or disconnecting the input power cable to the Compressor Unit and then remove the input power cable from the main power Failing to observe this precaution may result in electric shock Do not change the setting of the dial above the main power switch of the compressor unit under any circumstances Failing to observe this precaution may result in electric shock Be sure to turn off and Lock Out with OFF position the customer s main power before performing maintenance work such as replacement of fuses Failing to observe this precaution may result in electric shock WARNING Warning about explosion escape of gas This cryocooler cold head compressor unit compressor adsorber flex lines contains a high pressure about 1 62 MPa 16 5 kgf cm G 235 psig helium gas sealed in Hitting the equipment with a sharp edge or touching it with a pointed object may cause explosion or escape ofgas Handle the equipment with extreme care Do not disassemble the equipment for purposes other than maintenance specified in this service manual under any
65. ic shock Handle it with extreme care Make sure no power is applied to the compressor unit before starting the installation Failing to observe this precaution may result in electric shock Do not install the equipment near places subject to condensation such as a watering place Failing to observe this precaution may result in electric shock or malfunction Do not install the equipment in a dusty environment Failing to observe this precaution may result in electric shock or malfunction Make sure the power specification of the cryocooler used conforms to the customer s power supply before using the equipment Using the cryocooler with a non conforming power supply may result in electric shock or malfunction If the compressor unit used is the CSW 71D water cooled high voltage type pay attention to the setting of the applicable input supply voltage The product is shipped with the input supply voltage set to 480V Before installing the equipment be sure to check your supply voltage and change it to the appropriate setting if necessary Operating the equipment with your supply voltage different from the setting of the compressor unit may result in electric shock or malfunction Make sure no power is applied to the compressor unit before starting operation when connecting or disconnecting the cold head power cable Failing to observe this precaution may result in electric shock Be sure to turn off and Lock Out with OFF position the main p
66. ical Insuruction Reference Compressor Unit Section 3 2 Replace the fuse s 2 Reference Compressor Unit Technical Insuruction Section 2 2 Normal Reference Compressor Unit Technical Insuruction Section 2 2 Check the input power cable Abnormal connection Correct the error s Normal Reference CSW 71D Technical Insuruction Section 2 2 For CSW 71D gt Reference Check the input power voltage CSW 71D 71D and frequency setting of Abnormal Technical Insuruction the Compressor Unit Section 2 2 Adjust the voltage setting Reference Compressor Unit Technical Insuruction Section 1 1 2 2 Normal eck the user s power sour ecce ihi Fuse s circuit breakers Abnormal Technical Insuruction capacity and circuit wiring i Section 1 1 2 2 Correct the error s Normal Y Cold Head need to be rapaired Contact to SHI 52 OPERATION MANUAL FLOW B Sumitomo Heavy Industries Ltd 6 TROUBLE SHOOTING FLOW CHART System stopped during normal operation The Compressor Unit stoped with E the Main Power Switch tripped and Drive Switch ON j Reference Compressor Unit Section 2 2 Check the input power cable connection Normal Reference CSW 71D Section 2 2 lt For CSW 71D gt Check the
67. ies Ltd 3 2 FUSE REPLACEMENT 3 2 FUSE REPLACEMENT A WARNING lt Warning about electric shock gt This cryocooler includes a high voltage section Touching it may result in electric shock Handle it with extreme care Do not change the setting of the dial above the main power switch of the compressor unit under any circumstances Failing to observe this precaution may result in electric shock Be sure to turn off and Lock Out with OFF position the customer s main power before performing maintenance work such as replacement of fuses Failing to observe this precaution may result in electric shock Fuses are equipped inside of the Fuse Box for the Control Box Table 3 5 LIST OF FUSES Fuse Description Part Number Remarks FU1 For Cold Head Motor FU2 Class G Fuse 5A RE71WT0603 Solenoid Valve FU3 and DC circuit FUSE REPLACING PROCEDURE 1 Loosen the screws that hold the compressor side panel and remove the panel 2 Replace the Fuses
68. inlet PT3 8 inch Female type COOLING WATER OUTPUT CONNECTOR A connector for cooling water outlet PT3 8 inch Female type CSW 71C TECHNICAL INSTRUCTION Sumitomo Heavy Industries Ltd 1 2 CONSTRUCTION D sem NSO lt gt guion 2 m 4 CD 9 Figure 1 3 CONTROLS AND COUPLINGS FOR CSW 71C COMPRESSOR UNIT CSW 71C 8 TECHNICAL INSTRUCTION Sumitomo Heavy Industries Ltd 1 2 CONSTRUCTION 1 2 2 GAS AND OIL FLOW IN THE COMPRESSOR UNIT The flow diagram for CSW 71C Compressor Unit is shown in Figure 1 4 Internal components diagram and its functions are described in Figure 1 5 and Table 1 4 The Compressor Unit works as follows 1 2 3 4 5 6 T 8 9 Low pressure He gas discharged from a Cold Head can be led through a HE GAS RETURN CONNECTOR to the Compressor Unit The low pressure Return He gas can pass through a STORAGE TANK and a FILTER and flow into a COMPRESSOR CAPSULE The low pressure He gas will be compressed and pressurized in the COMPRESSOR CAPSULE and the high pressure with high temperature He gas after the compression will be discharged from the COMPRESSOR CAPSULE outlet The high pressure with high temperature He gas will be led to a water cooled
69. input power voltage and frequency setting of the Compressor Unit Reference Compressor Unit Section 1 1 2 2 Check the user s power source Fuse s circuit breakers capacity and circuit wiring Normal Y Cryocooler need to be rapaired Contact to SHI SRDK Series CRYOCOOLER Technical Insuruction In case the Compressor Unit stopped by high temperature it takes from 20 to 60 minutes for thermostat reset and Compressor Unit recovery Technical Insuruction Reference Compressor Unit Technical Insuruction Section 2 2 Abnormal Correct the error s Reference CSW 71D Abnormal Technical Insuruction V A Section 2 2 Adjust the voltage setting Technical Insuruction Reference Compressor Unit Technical Insuruction Section 1 1 2 2 Abnormal _ Correct the error s Cryocooler will not started Reference Section 4 1 3 4 Compressor Unit Section 2 2 SS Check the input power cable connection No connection Reverse phase etc Reference Compressor Unit Section 3 2 m Check the fuses of the Compressor Unit Normal Reference Compressor Unit Section 1 1 2 2 Check the user s power source Fuse s circuit breakers capacity and circuit wiring Reference CSW 71D Section 2 2 lt For CSW 71D gt Check the input power voltage and
70. it may result in serious injury When scrapping the CryoCooler handle it as Industrial Waste and pass it over to legally qualified disposer Install the cryocooler in the ventilated area otherwise it may result in asphyxiation in case the helium gas is purged or leaked WARNING The Adsorber weight is about 11 0kg When replace the adsorber be careful of handling so that it may not get hurt A lt Caution against misoperation gt CAUTION Do not get on the compressor unit or put an object on top of it Failing to observe this precaution may prevent the cryocooler from operating normally or cause injury Secure enough space around the compressor unit for heat radiation and maintenance Failing to secure enough space may result in misoperation or malfunction See the technical instruction of the compressor unit used for details If the compressor unit used is a water cooled type CSW 71C CSW 71D use cooling water with appropriate temperature flow rate and water quality Using inappropriate cooling water may result in misoperation or malfunction See the technical instruction of the compressor unit used for details The cold head drive switch provided with the compressor unit is only used for maintenance Be sure to turn it OFF in normal operation Using the compressor unit with the cold head drive switch turned ON may result in misoperation or malfunction CSW 71C 21 TECHNICAL INSTRUCTION Sumitomo Heavy Industries Ltd
71. k on For purging the cold head without connecting the flux lines the cold head drive should be turned on c however in the image it is off Cold head drive switch should be turned off after reconnecting the flux lines and the He compressor in the normal operational mode Figure 7 a For purging the cold head the gas inlet from helium gas cylinder not from helium compressor should be connected to supply inlet of the cold head using appropriate fittings gas connector Outlet was kept opened using gas connector The fuse and the Figure 8 a After making all connections from the He tank to the supply line and keeping the return open and keeping the pressure around 10 Psi for few min and then to about 100 Psi as shown in b the cold head has to be purged Before starting the automatic purging using the He compressor the compressor main power switch and After purging the cold head from the He cylinder using He compressor settings for about 20min the return valve can be closed Close the He tank and the supply inlet Now the Cold head is ready to be connected to the He flux lines First connect the flux lines to the He compressor and then to the cold head Make sure that the main power switch and the front panel switch of the compressor are turned off prior to re connecting the flux lines Then turn off the cold head drive switch Now the He compressor is ready to operate Switch on the front panel power switch then the compres
72. l in the matrix ready for the gas entering in the succeeding cycle EXHAUST STROKE Figure 1 3 PRINCIPLE OF GM CYCLE SRDK Series CRYOCOOLER 15 OPERATION MANUAL Sumitomo Heavy Industries Ltd 2 1 GENERAL 2 INSTALLATION WARNING Warning about electric shock gt This cryocooler includes a high voltage section Touching it may result in electric shock Handle it with extreme care Make sure no power is applied to the compressor unit before starting the installation Failing to observe this precaution may result in electric shock 2 1 GENERAL This section describes the installation of the Cold Head and the Compressor Unit and how to connect the Flex Lines and electrical cables Be sure to read this section before installing the cryocooler 2 2 TOOLS FOR INSTALLATION The following tools are required for SRDK Series Cryocooler Installation Table 2 1 REQUIRED TOOLS FOR INSTALLATION 1048 REMARK Screwdriver phillips flathead 6 Leak Detector Forieakchek 8 Bar wrench for M4 For Cold Head Installation to Vacuum Chamber SRDK Series CRYOCOOLER 16 OPERATION MANUAL Sumitomo Heavy Industries Ltd 2 3 MOVING 2 3 MOVING WARNING Warning about explosion escape of gas This cryocooler cold head compressor unit compressor adsorber flex lines contains high pressure about 1 62 MPa 16 5 kgf cm G 235 psig helium gas sealed i
73. lacer Figure 1 2 SCHEMATIC DIAGRAM OF GM CYCLE REFRIGERATOR The two spaces are connected through a thermal regenerator and to a gas supply The gas supply System is consisted of inlet and outlet valves a helium gas compressor and high and low pressure reservoirs The valves are coupled to the rotary drive mechanism and their operation is synchronized with the position of the displacer A heat exchanger is included downstream of the helium gas compressor to cool down the gas to ambient temperature after compression The pressure above and below the displacer will be the same level except for small pressure drops across the regenerator when gas is flowing through it The basic function for the displacer will be required to displace a volume in the cylinder so that the gas will be moved up and down in the cylinder without mechanical work Pressure in the system is increased or decreased by operation of the inlet or outlet valves The displacer is fit loosely in the cylinder except at the top equipped with a dynamic sliding seal to prevent gas leakage through the space between displacer and cylinder The regenerator will be consisted of metallic material divided finely will cool the gas passing downward to the cold space and heat the gas passing upward from the cold space SRDK Series CRYOCOOLER 14 OPERATION MANUAL Sumitomo Heavy Industries Ltd 1 3 THEORY OF OPERATION The refrigerator operates as follows Compressor PRESSURE BU
74. lve Watch the regulator s pressure gauge When the pressure falls to 35 70 kPa 5 10 psig close the vent valve Open the gas cylinder valve to increase the pressure to 690 kPa 100 psig Close the gas cylinder valve Repeat step 6 five 5 times Close the valve on the adapter fitting used for charging Open the gas cylinder valve Adjust the pressure regulator to the equalization pressure of the system Refer to the Specifications section in the System manual Open the valve on the adapter fitting and charge the gas line to the equalization pressure Close the valve on the adapter fitting Close the gas cylinder valve Disconnect the charge line from the adapter fitting Store the charge line to keep it clean Remove the adapter fittings This completes the procedure for gas cleanup of a gas line 12 PARTS Ordering Order parts by part number and name See Figure 9 Parts Identification and Number Figure 9 Parts Identification Item Part Name Part Number Size 4 Size 8 1 Dust Cap 44639 44642 2 Gasket Seal 77003 77002 3 Coupling Half Male 44601 44612 4 O ring 77005 47102 5 Coupling Half Female 44901 44614 6 Dust Plug 44640 44643 NOTE Gas lines used to carry refrigerant gas between the compressor and the cold heac typically are furnished with size 8 Aeroquip couplings 13 This page is intentionally blank 14 SHI 92 Sumitomo Heavy Industries Lt
75. m is to be required the routine maintenance for long term and continuous as every 10 000 Hrs on an actual installation The basic maintenance work is to replace the existing Cold Head composed of acting parts for every 10 000 Hrs operation and additional replacement of oil mist Adsorber of the Compressor Unit for every 20 000 Hrs operation as mentioned in Table 5 1 Table 5 1 MAINTENANCE SCHEDULE MAINTENANCE lt lt FREQUENCY REMARKS i lace Cold Head s d Not a User s Maintenance Compressor Fuse Replacement Asrequred Air Cooled Compressor site conditions Cleaning Water Line Water Cooled Compressor As required Depending on the Water Quality SRDK Series CRYOCOOLER 44 OPERATION MANUAL Sumitomo Heavy Industries Ltd 5 2 COLD HEAD MAINTENANCE 5 2 COLD HEAD MAINTENANCE The Cold Head is required to replace the sliding parts inside every 10 000 Hrs This is not a user s Maintenance Replace the Cold Head completely at site and return it to Sumitomo Heavy Industries Ltd for refurbishment 5 3 COMPRESSOR UNIT MAINTENANCE IMPORTANT See TECHNICAL INSTRUCTION of Compressor Unit used for detail of the Compressor Unit maintenance The Compressor Units are required to replace Adsorber every 20 000 Hrs The Adsorber is compatible for both air cooled and water cooled Compressor FOR AIR COOLED COMPRESSOR It is important to keep the heat exchanger clean It is required to
76. mm 11 81 inches Bending the flex lines at a smaller angle may cause explosion or escape of gas and so this should be avoided Do not disassemble the equipment for purposes other than maintenance specified in this service manual under any circumstances Disassembling the equipment may result in electric shock explosion or escape of gas The cold head compressor unit compressor adsorber and flex lines are pressurized with helium gas Purge the helium gas from all pressurized components before disposing Open the purging valve gradually or it may result in serious injury Do not break the vacuum with the low temperature of cold head second stage when removing the cold head from the vacuum chamber Breaking the vacuum may result in serious damage explosion or escape of gas Keep the Flex Lines connected and maintain the high vacuum of the chamber and wait until the cold head second stage temperature rises up to 100K before removing the cold head WARNING Warning about rotating part gt z If the compressor unit used is the CSA 71A air cooled low voltage type a venting fan is provided in the exhaust section at the top of the compressor unit Do not insert foreign substances from the exhaust port under any circumstances Failing to observe this precaution may result in injury or malfunction WARNING Do not touch the cooler fin of the Compressor Unit during fin cleaning Touching the fin may cause the injury The Adsorber weight i
77. n Do not change the setting of the dial above the main power switch of the compressor unit under any circumstances Failing to observe this precaution may result in electric shock WARNING Warning about explosion escape of gas MITT This cryocooler cold head compressor unit compressor adsorber flex lines contains a high pressure about 1 62 MPa 16 5 kgf cm G 235 psig helium gas sealed in Hitting the equipment with a sharp edge or touching it with a pointed object may cause explosion or escape ofgas Handle the equipment with extreme care SRDK Series CRYOCOOLER 36 OPERATION MANUAL Sumitomo Heavy Industries Ltd 3 1 PRELIMINARY CHECKS 3 1 PRELIMINARY CHECKS CAUTION Caution against misoperation gt S This cryocooler cold head compressor unit compressor adsorber flex lines is shipped with a helium gas at about 1 62 MPa 16 5 kgf cm G 235 psig sealed in Be sure to adjust the pressure to an appropriate value according to the cold head used before operating the equipment Using the cryocooler at an improper pressure may cause misoperation The coldhead employs the special seal to the 2nd stage The 2nd stage displacer is fit tightly in the cylinder Make sure the 2nd stage temperature is less than 28 deg C before starting up the cryocooler or the coldhead may make grinding noise IMPORTANT This cryocooler is provided with a phase reverse protection circuit for the input power the input
78. n Hitting the equipment with a sharp edge or touching it with a pointed object may cause explosion or escape ofgas Handle the equipment with extreme care CAUTION Caution against misoperation gt Do tilt it by more than 30 degrees when carrying compressor unit Tilting it by more than 30 degrees may cause oil sealed in the unit to move preventing the cryocooler from operating normally COMPRESSOR UNIT The compressor should not be tilted by more than 30 degrees at any time Tilting the Compressor Unit causes damage of Compressor Capsule or oil contamination of the Helium Gas Line COLD HEAD The Cold Head Cylinder should not be bent or dent The surface flatness of the Cold Head heat station is critical to the thermal contact Damage of the surface will cause performance loss SRDK Series CRYOCOOLER 17 OPERATION MANUAL Sumitomo Heavy Industries Ltd 2 4 SITE REQUIREMENT 2 4 SITE REQUIREMENT Caution against misoperation gt Do not use inverter for the main power source of the compressor unit Operating with inverter may result in the damage or malfunction of the compressor electric circuit CAUTION Avoid using the transformer for the main power source of the compressor unit If the transformer is installed at the upstream of the unit lacking phase protection circuit with the cryocooler occurs in a malfunction That may result in misoperation or malfunction When using the transformer install
79. n Section 5 4 If the gauge reads 0 MPa 0 kgf cm G 0 psig there is a risk of helium contamination and the Compressor Unit must be replaced Inspect following parts of the Compressor Unit before installation for evidence of damage 8 Overall exterior b Supply and Return Aero quip type fittings c Gas charge Aero quip type fittings d Oil leakage around the base panel 2 INSTALLATION Install the Compressor Unit to a level surface less than 5 degrees During installation do not tilt the Compressor Unit more than 30 degrees The Compressor Unit can travel with 4 casters and two of them are with lock devices After positioning the Compressor Unit the casters can be locked Check the site conditions as described in Section 2 4 SRDK Series CRYOCOOLER 23 OPERATION MANUAL Sumitomo Heavy Industries Ltd 2 7 CONNECTING FLEX LINES 2 7 CONNECTING FLEX LINES WARNING Warning about explosion escape of gas This cryocooler cold head compressor unit compressor adsorber flex lines contains high pressure about 1 62 MPa 16 5 kgf cm G 235 psig helium gas sealed in Hitting the equipment with a sharp edge or touching it with a pointed object may cause explosion or escape ofgas Handle the equipment with extreme care The minimum bending radius of the flex lines is 300 mm 11 81 inches Bending the flex lines at a smaller angle may cause explosion or escape
80. nd stage cold station compared with SHI previous standard type Cold Head The second stage cooling capacity of RDK 408S2 amp RDK 408S Cold Head is approximately 5W at 10K RDK 400B Single Stage Cold Head has only first stage displacer for cooling the shield The cooling capacity of RDK 400B is approximately 54W at 40K The Compressor Unit is required to operate the Cold Head The Compressor Unit will provide the power and the high pressure helium gas for the Cold Head and consisted of a compressor capsule a cooling System and lubricating oil mist Adsorber Functionally the high pressure helium gas from the Compressor Unit will be supplied to the Cold Head through the helium gas supply connector The supply gas will be passed into the displacer regenerator assembly come out through the displacer regenerator assembly to the crankcase through the motor housing and finally will be returned to the Compressor Unit through the helium gas return connector The helium gas expansion in the displacer regenerator assembly will provide cooling condition for the first and second stage cold stations The Cryocooler requires the routine maintenance to keep the performance The Adsorber replacement of the Compressor Unit is required every 20 000 operating hours The acting parts replacement of the Cold Head is required to maintain every 10 000 operating hours SRDK Series CRYOCOOLER 12 Sumitomo Heavy Industries Ltd OPERATION MANUAL 1 2 SR
81. nes are pressurized with helium gas Purge the helium gas from all pressurized components before disposing Open the purging valve gradually or it may result in serious injury When scrapping the CryoCooler handle it as Industrial Waste and pass it over to legally qualified disposer Install the cryocooler in the ventilated area otherwise it may result in asphyxiation in case the helium gas is purged or leaked WARNING The Adsorber weight is about 11 0kg When replace the adsorber be careful of handling so that it may not get hurt CAUTION Caution against misoperation gt Do not get on the compressor unit or put an object on top of it Failing to observe this precaution may prevent the cryocooler from operating normally or cause injury The Mist Adsorber is required to replace for every 20 000 Hrs operation Table 3 3 ADSORBER FOR COMPRESSOR UNIT DESCRIPTION PARTNUMBER REMARKS RE71TNO408 Table 3 4 REQUIRED TOOLS FOR ADSORBER REPLACEMENT 7048 2 REMARKS For Aero quip coupling Snoop liquid For leak check Cotton wipers For leak check 6 13 mm Open end wrench For fixing nut for Adsorber Screw driver phillips For side panel of Compressor Unit CSW 71C 23 TECHNICAL INSTRUCTION Sumitomo Heavy Industries Ltd 3 1 PERIODICAL MAINTENANCE Replace the Adsorber instructed as follows PREPARATION 1 Shutdown the Cryocooler 2 Disconnect the Input Power Cable from
82. ng to observe this precaution may prevent the cryocooler from operating normally or cause injury Secure enough space around the compressor unit for heat radiation and maintenance Failing to secure enough space may result in misoperation or malfunction See the technical instruction of the compressor unit used for details If the compressor unit used is the CSA 71A air cooled low voltage type sufficient space is required for venting Failing to secure sufficient space may result in misoperation or malfunction See the CSA 71A technical instruction for details If the compressor unit used is the CSA 71A air cooled low voltage type it should be installed in a clean environment Installing it in a dusty environment such as inside a factory will require frequent cleaning of the cooler fins or may result in misoperation or malfunction If the compressor unit used is a water cooled type CSW 71C CSW 71D use cooling water with appropriate temperature flow rate and water quality Using inappropriate cooling water may result in misoperation or malfunction See the technical instruction of the compressor unit used for details If the compressor unit used is a water cooled type CSW 71C CSW 71D do not use the demineralized water for cooling water Using demineralized water for cooling water may result in water leakage or malfunction Be extremely careful not to damage the cylinder when mounting the cold head Damaging the cylinder ma
83. nit can be installed at the field as complying with the Site Requirement SRDK Series CRYOCOOLER 18 OPERATION MANUAL Sumitomo Heavy Industries Ltd 2 4 SITE REQUIREMENT 2 4 1 REQUIRED FOR AIR COOLED COMPRESSOR UNIT An almost level and even area in the field will be selected to install the Compressor Unit An area to be influenced by splashing water and or dusts will not be selected to install the Compressor Unit A clean environmental condition without dirt and or free from an exhausted heat will be selected to install the Compressor Unit in the field An efficient ventilated area will be required to free from an exhausted heat of the Compressor Unit in the field A suitable air conditioning capacity will be secured for an installing area for the Compressor Unit in the field Any object and or obstacle cannot be positioned on a ventilation fan outlet in a top area of the enclosure and or on surroundings of the Compressor Cooler Any heat sensitive object cannot be positioned on surroundings of the Compressor Unit AMBIENT TEMPERATURE CONDITION The ambient temperature must be between 5 deg C 41 deg F and 28 deg C 82 4 deg F to get the specified cooling capacity The system can operate up to 35 deg C 95 deg F with less than 596 cooling capacity down The maximum relative air humidity is 8596 RH HELIUM SUPPLY SYSTEM A helium supply system is necessary if you need to decontaminate the helium gas o
84. nit used SRDK Series CRYOCOOLER 20 OPERATION MANUAL Sumitomo Heavy Industries Ltd 2 5 COLD HEAD INSTALLATION 2 5 COLD HEAD INSTALLATION WARNING Warning about explosion escape of gas This cryocooler cold head compressor unit compressor adsorber flex lines contains high pressure about 1 62 MPa 16 5 kgf cm G 235 psig helium gas sealed in Hitting the equipment with a sharp edge or touching it with a pointed object may cause explosion or escape ofgas Handle the equipment with extreme care Do not break the vacuum with the low temperature of cold head second stage when removing the cold head from the vacuum chamber Breaking the vacuum may result in serious damage explosion or escape of gas Keep the Flex Lines connected and maintain the high vacuum of the chamber and wait until the cold head second stage temperature rises up to 100K before removing the cold head CAUTION Caution against misoperation gt Be extremely careful not to damage the cylinder when mounting the cold head Damaging the cylinder may result in misoperation or malfunction The following procedures describe the inspection and installation of the Cold Head INSPECTION Inspect the following parts of the Cold Head before installation for evidence of damage 1 Overall exterior 2 Bent or dent of cylinder 3 Supply and Return Aeroquip fittings 4 Cold Head power connector 5 Mounting flange and its sealing s
85. non zero 1 6MPa If the compressor pressure reads zero it would not re start Chilled water supply is connected to the He compressor to dissipate the heat from the return supply When the temperature of the chilled water supply rises the He compressor might shuts down automatically and subsequently the magnet temperature will rise Sometimes the main power supply switch at the back panel will turn off by itself Then it has to be turned back on as shown in Figure 2 Most often switching OFF the drive switch and turning back ON will resume the He compressor Figure2 a The main power switch is at the back panel of the compressor is turned off To turn it on rotate the black switch by 90 deg ref Figure 6 b Front panel switch and the operating hours of the He compressor 40088 7h are elapsed as shown in the front panel reading The maximum operating hours of the instrument without maintenance is 30 000h After that the regular service of the He compressor is recommended especially adsorber has to be replaced There are two ways to do service on He compressor and cold head servicing if the Cold head or the He compressor is contaminated or needs a service If the compressor cold head parts are performing well and only if the parts are exposed to air Sumitomo can do an onsite service Also they can do the adsorber replacement However if the motor capsule needs a replacement then most likely the instrument has to go to the Sumitomo Chicag
86. o facility for service but check with Roy Roub if they can replace the capsule also by an onsite service Sumitomo can send a reconditioned and qualified end displacer assembly upon request contact Roy Roub for pricing Prior to reconnecting flux lines and the He compressor make sure those parts are clean and not contaminated and also filled with Helium gas 99 999926 purity Please check the price quote prior to sending the parts to Sumitomo and making an onsite service onsite service is pricy but faster Note If the cold head or flux line is contaminated or exposed to air as judged by the pressure reading at the He compressor the compressor should not be switched on Contact Roy Roub at Sumitomo Inc to proceed further with the repair service The cold head can be removed from the magnet and can be send out for repair special care should be taken to release the excess He gas residing inside the cold head prior to unscrewing the 4 screws as shown in the Figure3 for that appropriate fittings should be used contact Roy Roub to buy the fittings and couplings Figure3 a In order to pull the cold head unit out of the magnet 4 hex screws OUTER ONES should be removed as shown in the cartoon The cold head should be taken out very slowly b Before disassembling the cold head the He flux lines should be disconnected and the excess gas should be vent using appropriate couplings one by one first for the supply line and then the return lin
87. ock This cryocooler includes a high voltage section Touching it may result in electric shock Handle it with extreme care Pay special attention to its wiring when using the external connector on the compressor unit Connecting a jumper wire between Pins No 6 No 8 No 6 No 13 and No 6 No 15 may result in misoperation in some of safety devices in the equipment causing electric shock burn or malfunction IMPORTANT See ELECTRICAL SCHEMATIC of CSW 71C Compressor Unit for detail IMPORTANT The maximum allowable tightening torque of the D Sub Connector lock screw 4 40UNC is 0 17 Nm External Connector can be used monitoring the status of the Compressor Unit and the remote control sequences of the Compressor Unit are described in Table 1 5 The D sub pins indicated in Figure 1 6 on the control panel for the Compressor Unit can be applied to an initial condition monitoring for a first aid diagnostics of the Compressor Unit by means of measuring the each item with a digital Volt Ohm Meter The Fault Condition classified the digital meter reading as referred to the Table 1 5 can be identified simply an actual operation condition of the Compressor Unit in the field Table 1 5 EXTERNAL CONTROL ALARM ITEM OPERATION FAULT CONDITION Pressure Alarm Contact l Close 1 2 gt 108 ohm Signal Open Temp Anm Contact Close 3 4 gt 10 ohm Signal Alarm Open 3 pnvedudicat n 05 e porate 2 DEO SA max O
88. on Make sure no power is applied to the compressor unit before starting operation when connecting or disconnecting the cold head power cable Failing to observe this precaution may result in electric shock Be sure to turn off and Lock Out with OFF position the main power of the customer s power source before connecting or disconnecting the input power cable to the Compressor Unit and then remove the input power cable from the main power Failing to observe this precaution may result in electric shock Do not change the setting of the dial above the main power switch of the compressor unit under any circumstances Failing to observe this precaution may result in electric shock W g about explosiom escape of g ET This cryocooler cold head compressor unit compressor adsorber flex lines contains a high pressure about 1 62 MPa helium gas sealed in Hitting the equipment with a sharp edge or touching it with a pointed object may cause explosion or escape of gas Handle the equipment with extreme care The minimum bending radius of the flex lines is 150mm intermediate 300 mm terminal Bending the flex lines at a smaller angle may cause explosion or escape of gas and so this should be avoided Do not disassemble the equipment for purposes other than maintenance specified in this service manual under any circumstances Disassembling the equipment may result in electric shock explosion or escape of gas Install the cryocooler in the ventil
89. ooling water temperature flow rate etc Normal Check the vacuum Normal Check the termal interface of the Cold Head 1st and 2nd sta Normal Reference Cold Head Technical Insuruction Section 1 1 A Check the heat load to the Cold Head Normal v Cold Head need to be rapaired Contact to SHI Following infomation will be useful for failure mode analysis Damage of Cold Head Cilynder Warm up and remove the Cold Head and check the dent bend or damage of the Cold Head Cilynder W 71 W 71D Abnormal Technical Insuruction oe 1 1 Correct the error s Abnormal Correct the leak and fix it Repair the interface for good thermal conductivity Correct the error s No intake and exhaust noise from Cold Head Reference Operation Manual Section 2 8 Check the Cold Head Abnormal Reference Power Cable connection Normal Check the Cold Head Power Cable snapping Reference Compressor Unit Technical Insuruction Section 3 2 Check the fuses of Operation Manual Section 2 8 Correct the error s Abnormal Cold Head Power Cable need to be replaced J Reference Abnormal the Compressor Unit Normal Cold Head need to be rapaired Contact to SHI Compressor Unit Technical Ins
90. ore adjusting the helium gas pressure Charge helium gas if the pressure indication of the Compressor Unit is lower than specified value After stopping the cryocooler the pressure indication on the Indoor Unit pressure gauge shows lower than actual filling pressure because of the low temperature of the coldhead The coldhead temperature and compressor unit temperature needs to be equal to ambient temperature to check the actual filling pressure The filling pressure indication depends on the temperature of cryocooler components such as Coldhead Outdoor Unit Indoor Unit and Flex Lines In case the room temperature is relatively low the filling pressure indicates lower In case the room temperature is relatively high the filling pressure indicates higher Refer to the ambient temperature to adjust the filling pressure precisely REQUIRED TOOLS The following tools are required to charge helium gas to the Cryocooler system Table 5 2 REQUIRED TOOLS FOR HELIUM GAS CHARGE Ens TOOLS REMARK Z Gas charging tool for the Compressor Unit 4 3 4 Open end wrench Oooo O 5 8 Open end wrench I C SN Pressure regulator for helium gas bottle _ Helium gas bottle Purity of 99 999 up SRDK Series CRYOCOOLER 46 OPERATION MANUAL Sumitomo Heavy Industries Ltd 5 4 HELIUM GAS CHARGING PROCEDURE Remove the protective cap from the gas charge coupling on the Compressor Unit Connect a 20
91. osion or escape ofgas Handle the equipment with extreme care The Cold Head cannot be performed a required cooling power in normal operations as the result of the He gas pressure reducing gradually in the Cold Head in condition of occurring a He gas Leak in the Cryocooler The Compressor unit will be shut down as the function of the Low Pressure Switch to be sensed and excessive lower He gas pressure and verify the charged He gas pressure in the Compressor Unit as specified pressure The charged He gas pressure will be indicated individually for each application and see TECHNICAL INSTRUCTION of the Cold Head used COLD HEAD MODEL STATIC PRESSURE RDK 408D2 4K Cold Head RDK 408D 4K Cold Head RDK 415D 4K Cold Head RDK 408S2 10K Cold Head RDK 408S 10K Cold Head RDK 400B Single Stage Cold Head 1 60 1 70 MPa at 20 deg C 68 deg F 16 3 17 3 kgt cm G 232 246 psig 1 45 1 55 MPa at 20 deg C 68 deg F 14 8 15 8 kgf cm G 210 225 psig A Leak detector will be applied to leak area hunting for convenience and Liquid Leak Detector also will be useful to check the He gas leaking of couplings for the Flex Line by watching any bubbling carefully if the Leak Detector not in use at the field SRDK Series CRYOCOOLER 42 OPERATION MANUAL Sumitomo Heavy Industries Ltd 5 1 GENERAL INFORMATION FOR THE MAINTENANCE 5 MAINTENANCE WARNING Warning about electric shock gt This cryocooler includes a hig
92. ower of the customer s power source before connecting or disconnecting the input power cable to the Compressor Unit and then remove the input power cable from the main power Failing to observe this precaution may result in electric shock Do not change the setting of the dial above the main power switch of the compressor unit under any circumstances Failing to observe this precaution may result in electric shock Pay special attention to its wiring when using the external connector on the compressor unit Connecting a jumper wire between Pins No 6 No 8 No 6 No 13 and No 6 No 15 may result in misoperation in some of safety devices in the equipment causing electric shock burn or malfunction Be sure to turn off and Lock Out with OFF position the customer s main power before performing maintenance work such as replacement of fuses Failing to observe this precaution may result in electric shock SRDK Series CRYOCOOLER 4 OPERATION MANUAL Sumitomo Heavy Industries Ltd SAFETY PRECAUTIONS WARNING Warning about explosion escape of gas gt ee This cryocooler cold head compressor unit compressor adsorber flex lines contains a high pressure about 1 62 MPa 16 5 235 psig helium gas sealed in Hitting the equipment with a sharp edge or touching it with a pointed object may cause explosion or escape of gas Handle the equipment with extreme care The minimum bending radius of the flex lines is 300
93. r Flow Rate liter min Cooling Water Inlet Temperature deg C Cooling Water Flow Rate gallon min Cooling Water Inlet Temperature deg F The larger circulating pump will be required for the Antifreeze For Antifreeze 50 50 mixture of water and ethylene glycol or propylene glycol Water Flow liter min Water Flow gallon min 3 0 2 25 x 3 rs E I c E 2 0 ii o E515 PC i 1 0 OQ 4 L 0 5 0 4 8 12 16 20 24 28 32 30 40 50 60 70 80 90 Cooling Water Inlet Temperature deg C Cooling Water Inlet Temperature deg F Pressure Drop For Water and For Antifreeze 0 50 70 0 Water 600 Water 4 on sAntifreeze 4 1 500 sig wAntlireeze set 9 0 30 vett 40 0 0 20 9 300 5 200 pao 10 0 2 0 00 00 4 0 5 0 6 0 7 0 8 0 9 0 10 0 1 0 12 14 1 6 18 2 0 22 24 2 6 Figure 1 1 CSW 71C COOLING WATER TYPICAL FLOW CHARACTERISTICS TECHNICAL INSTRUCTION Sumitomo Heavy Industries Ltd 1 1 SPECIFICATIONS Table 1 2 COOLING WATER SPECIFICATIONS Steady State lt 6 5 for 50Hz lt 7 5 for 60 2 Maximum 7 2 for 50Hz lt 8 3 for 60Hz Heat Output KW CHAR
94. r or charge the helium gas that has leaked out of the system A helium supply system includes a Grade 5 99 999965 up pure helium gas bottle a regulator an outlet valve and a charging hose or equivalent delivery line POWER SOURCE Ensure the correct AC power source is available for the Compressor Unit See TECHNICAL INSTRUCTION of CSA 71A for AC power source requirement SAFETY SEISMIC REQUIREMENT Secure to lock the locking device of compressor castor SERVICE AREA Air cooled Compressor Unit should have enough space for air flow as shown in TECHNICAL INSTRUCTION of CSA 71A SRDK Series CRYOCOOLER 19 OPERATION MANUAL Sumitomo Heavy Industries Ltd 2 4 SITE REQUIREMENT 2 4 2 REQUIRED FOR WATER COOLED COMPRESSOR UNIT An almost level and even area in the field will be selected to install the Compressor Unit An area to be influenced by splashing water and or dusts will not be selected to install the Compressor Unit A clean environmental condition without dirt and or free from an exhausted heat will be selected to install the Compressor Unit in the field A quality of cooling water will be secured to use for an appropriate cooling of the Compressor Unit Any heat sensitive object cannot be positioned on surroundings of the Compressor Unit AMBIENT TEMPERATURE CONDITION The ambient temperature must be between 5 deg C 41 deg F and 28 deg C 82 4 deg F to get the specified cooling capaci
95. r supply may result in electric shock or malfunction WARNING If the compressor unit used is the CSW 71D water cooled high voltage type pay attention to the setting of the applicable input supply voltage The product is shipped with the input supply voltage set to 480V Before installing the equipment be sure to check your supply voltage and change it to the appropriate setting if necessary Operating the equipment with your supply voltage different from the setting of the compressor unit may result in electric shock or malfunction Be sure to turn off and Lock Out with OFF position the main power of the customer s power source before connecting or disconnecting the input power cable to the Compressor Unit and then remove the input power cable from the main power Failing to observe this precaution may result in electric shock Do not change the setting of the dial above the main power switch of the compressor unit under any circumstances Failing to observe this precaution may result in electric shock CAUTION lt Caution against misoperation gt Do not use inverter for the main power source of the compressor unit Operating with inverter may result in the damage or malfunction of the compressor electric circuit Avoid using the transformer for the main power source of the compressor unit If the transformer is installed at the upstream of the unit lacking phase protection circuit with the cryocooler occurs in a malfunction Tha
96. r system COOLING WATER Ensure the correct cooling water is available for the compressor See Figure 1 1 and Table 1 2 for the cooling water requirements for your system Operating with Antifreeze 50 50 mixture of water and ethylene glycol the flow rate shall be larger than the water See Figure 1 1 and Table 1 2 for the cooling water requirements for your system SAFETY SEISMIC REQUIREMENT Secure to lock the locking device of compressor castor SERVICE AREA The Compressor Unit should have enough space as shown in Figure 2 1 CSW 71C 17 TECHNICAL INSTRUCTION Sumitomo Heavy Industries Ltd 2 1 SITE REQUIREMENT 500 19 7 MAINTENANCE SPACE 800 31 57 8 ale 500097 3000187 Clearance for Instal lation m pes em TUAE ane E OS IL 0 Hi Figure 2 1 WATER COOLED COMPRESSOR UNIT CSW 71C AND ITS REQUIRED SPACE CSW 71C 18 TECHNICAL INSTRUCTION Sumitomo Heavy Industries Ltd 2 2 INPUT POWER CABLE CONNECTION 2 2 INPUT POWER CABLE CONNECTION WARNING Warning about electric shock Make sure the power specification of the cryocooler used conforms to the customer s power supply before using the equipment
97. re around the equipment COLD STAGE TEMPERATURE Monitor the Cold Head 1st and 2nd stage temperature The final temperature of the Cold Head depends on the heat load such as radiation heat applied heat load and convection caused by bad vacuum of the chamber the temperature becomes steady state but high the total heat loads to the Cold Head is too much Check the heat loads FLEX LINES TEMPERATURE Make sure that the temperature of the supply Flex Line from the Compressor to the Cold Head does not exceed 40 deg C 104 deg F If the Flex Line temperature is higher check the conditions of air flow and cooler fins for Air Cooled Compressor Unit and water flow for Water Cooled Compressor Unit COOLING AIR FLOW for Air Cooled Compressor Unit If the system is with Air Cooled Compressor Unit identify that the forced draught Fan located at the top of the Compressor Unit is continuously operating and that cooling air is drawn in through the heat exchanger and flows out from the top cover of the Compressor Unit It is required to keep the enough space around the compressor and the room temperature should be less than 28 deg C 82 4 deg F to get the refrigeration capacity The maximum heat output from Compressor is 8 3 kW or 28 320 BTU h therefore a suitable air conditioning should be prepared COOLING WATER FLOW for Water Cooled Compressor Unit If the system is with Water Cooled Compressor Unit make sure that the sufficient cooling wa
98. re furnished cleaned charged with helium gas and leak checked Each cryogenic system includes interconnecting gas lines to carry helium gas refrigerant to and from the components A gas line carries high pressure gas from the compressor to the cold head and another gas line returns lower pressure gas to the compressor Flexible gas lines simplify installation The self sealing couplings maintain the gas charge and purity by minimizing gas loss when connections are being made or broken and by preventing the entrance of contaminants Dust plugs protect the coupling threads from damage and also help to maintain cleanliness u a m a Ha N s Mish L L L METAL BRAID NUT Figure 1 Typical Helically Corrugated Gas Line Construction This page is intentionally blank SPECIFICATIONS Minimum Bend Radius Gas Line Type Diameter Minimum bend radius mm inches mm inches Helically corrugated 19 3 4 I D 230 9 stainless steel Helically corrugated 13 1 2 1 0 180 7 stainless steel Copper tubing using a tube 17 5 8 O D 57 24 bender Copper tubing without 17 5 8 O D 460 18 using a tube bender Pressure and Temperature Ratings Pressure and Temperature Stainless Steel and Copper Ratings Design pressure max 2760 kPa 400 psig Operating pressure max 2410 kPa 350 psig Charge pressure max 1860 kPa 270 psig Operating temperature max 49 C 120 F Operating
99. read this manual and following manuals before using this equipment MANUAL NAME MANUAL No TECHNICAL INSTRUCTION RDK 408D2 4K COLD HEAD CD32ZZ 160 TECHNICAL INSTRUCTION RDK 408D 4K COLD HEAD CD32ZZ 064 TECHNICAL INSTRUCTION RDK 408S2 10K COLD HEAD CD32ZZ 161 TECHNICAL INSTRUCTION RDK 408S 10K COLD HEAD CD32ZZ 065 TECHNICAL INSTRUCTION RDK 400B SINGLE STAGE COLD HEAD CD32ZZ 066 TECHNICAL INSTRUCTION RDK 415D 4K COLD HEAD CD32ZZ 070 TECHNICAL INSTRUCTION CSA 71A COMPRESSOR UNIT CD32ZZ 067 TECHNICAL INSTRUCTION CSW 71C COMPRESSOR UNIT CD32ZZ 068 TECHNICAL INSTRUCTION CSW 71D COMPRESSOR UNIT CD32ZZ 069 See TECHNICAL INSTRUCTION of Cold Head used See TECHNICAL INSTRUCTION of Compressor Unit used SRDK Series CRYOCOOLER 1 OPERATION MANUAL Sumitomo Heavy Industries Ltd BEFORE USING EQUIPMENT BEFORE USING EQUIPMENT This service manual is intended only for the exclusive service personnel Sumitomo Heavy Industries will not be responsible for any accidents failures non conformities etc caused by operations by any persons other than service personnel according to the descriptions in this manual This service manual describes important information such as the installation method operation method and maintenance of this equipment Be sure to read this service manual before using this cryocooler Using the equipment without observing the descriptions in this manual may result in malfunction of
100. replace the adsorber be careful of handling so that it may not get hurt SRDK Series CRYOCOOLER 48 OPERATION MANUAL Sumitomo Heavy Industries Ltd 6 TROUBLE SHOOTING FLOW CHART CAUTION Caution against misoperation ean T P Secure enough space around the compressor unit for heat radiation and maintenance Failing to secure enough space may result in misoperation or malfunction See the technical instruction of the compressor unit used for details If the compressor unit used is the CSA 71A air cooled low voltage type sufficient space is required for venting Failing to secure sufficient space may result in misoperation or malfunction See the CSA 714 technical instruction for details If the compressor unit used is the CSA 71A air cooled low voltage type it should be installed in a clean environment Installing it in a dusty environment such as inside a factory will require frequent cleaning of the cooler fins or may result in misoperation or malfunction If the compressor unit used is a water cooled type CSW 71C CSW 71D use cooling water with appropriate temperature flow rate and water quality Using inappropriate cooling water may result in misoperation or malfunction See the technical instruction of the compressor unit used for details The cold head drive switch provided with the compressor unit is only used for maintenance Be sure to turn it OFF in normal operation Using the compressor unit
101. s 2 P N SK8217A2 or 255919B2 and 257246C5 Open end wrenches Cleaning and recharging are always required when a gas line has been vented and repaired or if the gas pressure has dropped to less than 140 kPa 20 psig Each gas line is cleaned and charged individually using adapter fittings 1 Locate and connect adapter fitting P N SK8217A2 to one gas line coupling Connect adapter fittings P N 255919B2 and257246C5 to the other coupling Be sure the valve on each adapter fitting is closed before it is connected NOTE Adapter fittings are available as optional accessories from SCAI Connect a charge line to the pressure regulator of a helium gas cylinder containing 99 995 pure helium gas with a dew point less than 50 C 58 F at 2065 kPa 300 psig WARNING AVOID INJURY Never use compressed gas from a cylinder without a proper regulator Overpressure can cause personal injury if the system equipment ruptures 11 9 10 11 Maintenance Open the gas cylinder valve While connecting the charge line to the valve on one of the adapter fittings thoroughly purge the charge line from the regulator It is important to remove all air contaminants to prevent them from entering the gas line Adjust the gas cylinder regulator to 690 kPa 100 psig Open the valve on the adapter fitting and charge the gas line to 690 kPa 100 psig Close the valve on the helium gas cylinder not on the regulator Open the vent va
102. s about 11 0kg When replace the adsorber be careful of handling so that it may not get hurt SRDK Series CRYOCOOLER 5 OPERATION MANUAL Sumitomo Heavy Industries Ltd CAUTIONS CAUTION SAFETY PRECAUTIONS Caution against misoperation gt Do not tilt it by more than 30 degrees when carrying the compressor unit Tilting it by more than 30 degrees may cause oil sealed in the unit to move preventing the cryocooler from operating normally This cryocooler is intended for the exclusive use indoors It cannot be used outdoors Failing to observe this precaution may prevent the cryocooler from operating normally Do not use inverter for the main power source of the compressor unit Operating with inverter may result in the damage or malfunction of the compressor electric circuit Avoid using the transformer for the main power source of the compressor unit If the transformer is installed at the upstream of the unit lacking phase protection circuit with the cryocooler occurs in a malfunction That may result in misoperation or malfunction When using the transformer install the other lacking phase protection device in upstream of the transformer The cryocooler ON OFF frequency must be less than 6 times per hour and the ON OFF interval must be more than 3 minutes The frequent ON OFF operation may result in damage of compressor capsule or malfunction Do not get on the compressor unit or put an object on top of it Faili
103. serve this precaution may prevent the cryocooler from operating normally or cause injury Secure enough space around the compressor unit for heat radiation and maintenance Failing to secure enough space may result in misoperation or malfunction See the technical instruction of the compressor unit used for details If the compressor unit used is the CSA 71A air cooled low voltage type sufficient space is required for venting Failing to secure sufficient space may result in misoperation or malfunction See the CSA 714 technical instruction for details If the compressor unit used is the CSA 71A air cooled low voltage type it should be installed in a clean environment Installing it in a dusty environment such as inside a factory will require frequent cleaning of the cooler fins or may result in misoperation or malfunction If the compressor unit used is a water cooled type CSW 71C CSW 71D use cooling water with appropriate temperature flow rate and water quality Using inappropriate cooling water may result in misoperation or malfunction See the technical instruction of the compressor unit used for details The cold head drive switch provided with the compressor unit is only used for maintenance Be sure to turn it OFF in normal operation Using the compressor unit with the cold head drive switch turned ON may result in misoperation or malfunction 5 1 GENERAL INFORMATION FOR THE MAINTENANCE The SRDK CRYOCOOLER syste
104. sor Unit Setting pressure Operate 2 55 MPa approx HIGH PRESSURE SWITCH Reset 2 26 MPa approx PSH To adjust a Supply He gas pressure smoothly by a function of the pressure Switch for Open and or Shut in case of higher pressure of the Supply He gas than the setting pressure Setting Pressure Operate 0 15 MPa approx To shut down the Compressor Unit and signal a Low pressure alarm to External Connector in case of lower pressure of a compressed He gas caused by a smaller quantity of He gas than original filling in the compressor unit Setting pressure Operate 2 61 2 75 MPa Reset 2 50 MPa minimum MARNE To adjust a Supply He gas pressure smoothly by a function of the Relief Valve for blowing off the He gas to the atmosphere in case of higher pressure of Supply He gas than the setting pressure MAIN POWER SWITCH Setting current 29 1 To shut down the Compressor Unit in case of occurring over current and or short circuit than the setting current PHASE FAILURE To avoid starting up of the Compressor Unit in case of an abnormal operation PROTECTION CIRCUIT caused by irregular connecting of Input Power Cable such as failure connecting FUSE To protect the Compressor Unit from the over load caused by short circuit and or FU1 FU2 FU3 any other electrical failure in the DC power or the Solenoid Valve THERMOSTAT TS1 THERMOSTAT TS2 THERMOSTAT T
105. sor will start operating Initially the pressure reading will be around 2 6 MPa but it will reduce slowly to 2 2 MPa over about 24h of operation SERVICE DETAILS OF THE COLD HEAD AND THE HE COMPRESSOR Serial Cold head Model RDK 408D2 S N AJD 07016 He compressor Model CSW 71C S N 47C07087D Contact details of the IL Sumitomo Inc SHI Cryogenics He compressor service e Sumitomo SHI Cryogenics of America Inc e1500 C Higgins Road e Elk Grove Village e IL 60007 PH 847 290 5801 Fax 847 290 1984 Personal Contact Skica Aya lt askica shicryogenics com gt The weight of the He compressor is about 100 pounds and the wooden crate has about 250 Pounds Therefore we need to contact Fed Ex freight service for shipping Cold head service e Sumitomo Cryogenics of America Inc e1833 Vultee Street e Allentown 18103 e Tel 610 791 6700 e Fax 610 791 3904 e www shicryogenics com Personal Contact Raub Roy lt rraub shicryogenics com gt He CSW 71 compressor service Skica Aya lt askica shicryogenics com gt Tasks and prices 1 Preventative maintenance 2 000 includes oil change replacement of minor electrical components and sheet metal if required 2 Absorber replacement costs additional 1 500 The absorber needs a replacement Sumitomo advices to do it since compressor is already been passed 40 000h max usage of absorber is 30 000h otherwise the oil will be contaminated soon cause
106. t SUPPLY Female Female 20 A x 20 m 69 6 feet 20 A x 6 m 19 7 feet Buffer Tank 20 A x 6 m 19 7 feet RETURN Female Female 20 A x 20 m 69 6 feet 20 A x 6 m 19 7 feet Buffer Tank COLD HEAD POWER CABLE 6 m 19 7 feet To operate the RDK 415D and RDK 400B including the special flange model with specified cooling capacity use the 20A x 20m flex line or 20A x 6m flex line Buffer Tank SRDK Series CRYOCOOLER 11 OPERATION MANUAL Sumitomo Heavy Industries Ltd 1 2 SRDK SERIES CRYOCOOLER 1 2 SRDK SERIES CRYOCOOLER The SRDK Series Cryocooler consists of a Cold Head Compressor Unit Flex Lines and Cold Head Power Cable The RDK series Cold Head is a GM cycle cryo refrigerator The function of the Cold Head is to produce continuous closed cycle refrigeration at temperatures depending upon the heat load imposed The Cold Head has three 3 major components the drive unit the cylinder and the displacer regenerator assembly which is located inside the cylinder RDK 408D2 amp RDK 408D amp RDK 415D 4K Cold Heads are applied rare earth material for the second stage displacer to produce 4K temperature The second stage cooling capacity is approximately 1 0W at 4 2K for RDK 408D2 amp RDK 408D and 1 5W at 4 2K for RDK 415D RDK 408S2 amp RDK 408S 10K Cold Head is the standard type Cold Head which are modified to produce more cooling capacity for the seco
107. t may result in misoperation or malfunction When using the transformer install the other lacking phase protection device in upstream of the transformer IMPORTANT This cryocooler is provided with a phase reverse protection circuit for the input power If the input power is connected with reverse phase the cryocooler does not start IMPORTANT See TECHNICAL INSTRUCTION of Compressor Unit used for detail of Input Power Connection SRDK Series CRYOCOOLER 35 OPERATION MANUAL Sumitomo Heavy Industries Ltd 3 1 PRELIMINARY CHECKS 3 OPERATION WARNING Warning about electric shock gt IEEE This cryocooler includes a high voltage section Touching it may result in electric shock Handle it with extreme care Make sure the power specification of the cryocooler used conforms to the customer s power supply before using the equipment Using the cryocooler with a non conforming power supply may result in electric shock or malfunction If the compressor unit used is the CSW 71D water cooled high voltage type pay attention to the setting of the applicable input supply voltage The product is shipped with the input supply voltage set to 480V Before installing the equipment be sure to check your supply voltage and change it to the appropriate setting if necessary Operating the equipment with your supply voltage different from the setting of the compressor unit may result in electric shock or malfunctio
108. t of fuses Failing to observe this precaution may result in electric shock WARNING Warning about explosion escape of gas gt This cryocooler cold head compressor unit compressor adsorber flex lines contains high pressure about 1 62 MPa 16 5 kgf cm G 235 psig helium gas sealed in Hitting the equipment with a sharp edge or touching it with a pointed object may cause explosion or escape ofgas Handle the equipment with extreme care Do not disassemble the equipment for purposes other than maintenance specified in this service manual under any circumstances Disassembling the equipment may result in electric shock explosion or escape of gas Do not break the vacuum with the low temperature of cold head second stage when removing the cold head from the vacuum chamber Breaking the vacuum may result in serious damage explosion or escape of gas Keep the Flex Lines connected and maintain the high vacuum of the chamber and wait until the cold head second stage temperature rises up to 100K before removing the cold head WARNING Warning about rotating part If the compressor unit used is the CSA 71A air cooled low voltage type a venting fan is provided in the exhaust section at the top of the compressor unit Do not insert foreign substances from the exhaust port under any circumstances Failing to observe this precaution may result in injury or malfunction WARNING The Adsorber weight is about 11 0kg When
109. ter is flowing as shown in the specification described in TECHNICAL INSTRUCTION of Compressor Unit used The quality of the water should meet the specification The specification is also described in TECHNICAL INSTRUCTION of Compressor Unit used to prevent plugging or calcification SRDK Series CRYOCOOLER 40 OPERATION MANUAL Sumitomo Heavy Industries Ltd 4 1 SIMPLE PROBLEM 4 FUNCTIONAL CHECK 4 1 SIMPLE PROBLEM This section describes several simple problems that usually occurred If you have trouble that you cannot fix according to the following procedure proceed to TROUBLE SHOOTING FLOW CHART described in Section 6 4 1 1 PRESSURE Cryocooler is designed and manufactured to get cooling capacity with specified Helium Gas Pressure It is highly recommended to check the pressure If the indicated pressure is higher than specified value reduce the pressure If it is lower charge the helium gas See TECHNICAL INSTRUCTION of Cold Head used to see the specified pressure of your system COLD HEAD MODEL STATIC PRESSURE RDK 408D2 4K Cold Head RDK 408D 4K Cold Head RDK 415D 4K Cold Head RDK 408S2 10K Cold Head RDK 408S 10K Cold Head RDK 400B Single Stage Cold Head 1 60 1 70 MPa at 20 deg C 68 deg F 16 3 17 3 kgtf cm G 232 246 psig 1 45 1 55 MPa at 20 deg C 68 deg F 14 8 15 8 kgf cm G 210 225 psig After replacing Cold Head it will be necessary to charge the Helium Gas because the
110. tite 242 to one full thread in the coupling adapter Use a needle applicator Start at the second thread from the lead thread and work toward the hexagon Shake the Loctite before use Assemble the coupling body to the adapter Use two wrenches Hold the adapter with one wrench and screw the two parts together Tighten the size 8 Aeroquip coupling parts to 4 85 6 25 kg m 35 45 ft Ibs 11 Allow at least a 6 hour curing period before applying gas pressure This completes the procedure for repairing or replacing a self sealing coupling Charge Pressure Verification Tools required Tool Kit P N 268151A Open end wrenches This procedure describes the process for checking and if necessary correcting the helium gas charge pressure in refrigeration system gas lines 1 2 PRESERVE YOUR WARRANTY Any helium gas used in this procedure should be of high purity A purity level Of 99 999 is required PREVENT EQUIPMENT DAMAGE Keep the gas line couplings aligned when making or breaking a coupling connection Leaks can occur due to the weight of the gas line or due to a sharp bend near the connection Crimping from repeated bending and repositioning can cause damage to gas lines WARNING AVOID INJURY Use two wrenches when connecting or disconnecting a gas line coupling to avoid loosening the wrong joint Gas pressure can project the coupling with enough force to cause injury If the charge pressure in the tool is
111. too low use the charge adapter tool P N 255919B2 to charge the pressure gauge tool to 50 psig If the pressure gauge tool is completely empty purge the pressure gauge tool with helium gas by flushing through with the exhaust valve open After purging close the exhaust valve and establish the proper charge pressure in the pressure gauge tool Close the exhaust valve Remove the charge adapter from the Verify the pressure gauge tool P N 268150C2 has a minimum charge pressure of 20 psig pressure gauge tool 10 7 Maintenance Unthread the dust cap from one end of the gas line to be checked Be sure the valve on the pressure gauge tool is closed before it is connected Connect the male Aeroquip end of the pressure gauge tool to the gas line using two wrenches Read the pressure 4 1 lf the pressure is low but gt 20 psig use the charge adapter to add helium gas to the gas line to reach the specified equalization pressure 4 2 If pressure in the gas line is 20 psig perform a clean up on the gas line When finished checking or pressurizing the gas line make sure the gauge tool is charged to 50 psig helium gas for storage Disconnect the male Aeroquip end of the pressure gauge tool from the gas line using two wrenches Screw the dust cap finger tight on to the gas line coupling This completes the procedure for checking the charge pressure in a gas line Gas Cleanup and Recharging Tools required Adapter fitting
112. ty The system can operate up to 35 deg C 95 deg F with less than 596 cooling capacity down The maximum relative air humidity is 8596 RH HELIUM SUPPLY SYSTEM A helium supply system is necessary if you need to decontaminate the helium gas or charge the helium gas that has leaked out of the system A helium supply system includes a Grade 5 99 999956 up pure helium gas bottle a regulator an outlet valve and a charging hose or equivalent delivery line POWER SOURCE Ensure the correct AC power source is available for the Compressor Unit See TECHNICAL INSTRUCTION of Compressor Unit used for AC power source requirement COOLING WATER Ensure the correct cooling water is available for the Compressor Unit See TECHNICAL INSTRUCTION of Compressor Unit used for the cooling water requirements ANTIFREEZE Operating with Antifreeze 50 50 96 mixture of water and ethylene glycol the flow rate shall be 1096 larger than water flow rate and the pressure drop through the cooling water line will be 4096 larger The larger circulating pump will be required for the Antifreeze The admissible capacity range for circulation pump will be more than 8 liter min 2 1 gal min for flow rate and 0 29 MPa 3 kgf cm G 42 psig for the pressure drop SAFETY SEISMIC REQUIREMENT Secure to lock the locking device of compressor castor SERVICE AREA The Compressor Unit should have enough space as shown in TECHNICAL INSTRUCTION of Compressor U
113. uent ON OFF operation may result in damage of compressor capsule or malfunction The cold head drive switch provided with the compressor unit is only used for maintenance Be sure to turn it OFF in normal operation Using the compressor unit with the cold head drive switch turned ON may result in misoperation or malfunction The coldhead employs the special seal to the 2nd stage The 2nd stage displacer is fit tightly in the cylinder Make sure the 2nd stage temperature is less than 28 deg C before starting up the cryocooler or the coldhead may make grinding noise IMPORTANT This cryocooler is provided with a phase reverse protection circuit for the input power If the input ower is connected with reverse phase the cryocooler does not start Start up the Cryocooler as mentioned below Make sure that the pressure gauge of the Compressor Unit is indicating correct static pressure of your system with supply pressure gauge 2 Check the setting of Drive Switch Cold Head Drive Switch and Remote Drive Switch Drive Switch OFF Position Cold Head Drive Switch OFF Position Remote Drive Switch INT Position for Water Cooled Compressor Unit only Turn on the Main Power Switch For Air Cooled Compressor Unit For Water Cooled Compressor Unit 4 Turnon the Drive Switch For Air Cooled Compressor Unit For Water Cooled Compressor Unit SRDK Series CRYOCOOLER 38
114. urface 6 Sealing surface or O ring groove of User s vacuum chamber INSTALLATION The Cold Head can be mounted in any desired position and orientation Install the Cold Head into User s cryostat or vacuum chamber with a prudent care SRDK Series CRYOCOOLER 21 OPERATION MANUAL Sumitomo Heavy Industries Ltd 2 6 COMPRESSOR UNIT INSTALLATION 2 6 COMPRESSOR UNIT INSTALLATION WARNING Warning about electric shock gt LL Do not install the equipment near places subject to condensation such as a watering place Failing to observe this precaution may result in electric shock or malfunction Do not install the equipment in a dusty environment Failing to observe this precaution may result in electric shock or malfunction WARNING Warning about explosion escape of gas This cryocooler cold head compressor unit compressor adsorber flex lines contains high pressure about 1 62 MPa 16 5 kgf cm G 235 psig helium gas sealed in Hitting the equipment with a sharp edge or touching it with a pointed object may cause explosion or escape ofgas Handle the equipment with extreme care Caution against misoperation gt This cryocooler is intended for the exclusive use indoors It cannot be used outdoors Failing to observe this precaution may prevent the cryocooler from operating normally CAUTION Do not get onto the compressor unit or put an object on top of it Failing to observe this precaution m
115. urity 99 99996 from Airgas should be provided for the service 9 Sumitomo SHI CRYOGENICS OF AMERICA INC Gas Lines Technical Manual Sumitomo SHI Cryogenics of America Inc 1833 Vultee Street Allentown PA 18103 4783 U S A Revision G December 2011 261320A TABLE OF CONTENTS Page DESCRIPTION acida o diee te ti ets a ed tiem gue alas tu utter du e te las 1 SPECIFICATIONS e EE 3 Minimum Bend RadiUs treni t ot meets ete ten Ea Eines e sexe pue 3 Pressure and Temperature 3 Identification Labels sede via servas den a A MEE 3 Installation 4 MAINTENANCE med ex ose itai dimidia 5 eut 5 recreo 5 From Cold i er staves qa pue deleted eeckiwebshodeds ERAEN 6 OAM GIGI u a c rep 6 Gas Ene OBI 7 Ventifig 2 a oe t hi eee US E EE 7 Repair Self Sealing Couplings i eis Dur te se terse 8 Replace the Gasket pati ee pata dene cae dee 8 Repair or Replace a Coupling eee d de epee eee 9 Charge Pressure Verification enne nnne
116. uruction Section 3 2 Replace the fuse s 54 OPERATION MANUAL FLOW D Sumitomo Heavy Industries Ltd 6 TROUBLE SHOOTING FLOW CHART Abnormal noise from Cold Head Reference Operation Manual Section 2 8 Check the Cold Head Power Cable connection Normal Check the Cold Head Power Cable snapping Reference Compressor Unit Technical Insuruction Section 3 2 Check the fuses of the Compressor Unit Normal Cold Head need to be rapaired Contact to SHI Following infomation will be useful for failure mode analysis Cold Head Motor Resistance Measure the coil resistance between the terminal pins of Cold Head Motor SPEC 250 15 Cold Head Motor Insulation Measure the insulation resistance between the terminal pins and the Cold Head casing SPEC gt 1Mohm Damage of Cold Head Cilynder Warm up and remove the Cold Head and check the dent bend or damage of the Cold Head Cilynder SRDK Series CRYOCOOLER Abnormal Reference Operation Manual Section 2 8 Correct the error s Abnormal Cold Head Power Cable need to be replaced Reference Abnormal gt Compressor Unit Technical Insuruction Section 3 2 Replace the fuse s Abnormal noise from Compressor Unit Reference CSW 71D Technical Insuruction Section
117. void loosening the compressor s or cold head s coupling Gas pressure can project the coupling with enough force to cause injury AVOID GAS LEAKS Keep the gas line couplings aligned when making or breaking a coupling connection Leaks can occur due to the weight of the gas line or due to a sharp bend near the connection Crimping from repeated bending and repositioning can cause damage to gas lines CAUTION PREVENT EQUIPMENT DAMAGE Do not use a clamp over hose section of flex gas line Disconnect from the Compressor Tools required Open end wrenches 1 Always use two wrenches Use one wrench to hold the compressor coupling Use the second wrench on the gas line coupling nut to break the connection See Figure 2 After breaking the connection hold the coupling adapter with one wrench Remove the gas line coupling from the compressor coupling with the second wrench See Figure 3 Screw a dust cap finger tight on to the compressor coupling Maintenance GAS LINE crue i GAS LINE COUPLING COMPRESSOR COUPLING COMPRESSOR COUPLING Figure 2 Break Gas Line Connection Figure 3 Disconnect Gas Line from Compressor from Compressor Disconnect from the Cold Head Tools required Open end wrenches 1 Always use two wrenches Use one wrench to hold the cold head coupling Use the second wrench on the gas line coupling nut to break the connection See Figure 4 2 After breaking the connection hold the coupling adapter with
118. with the cold head drive switch turned ON may result in misoperation or malfunction SRDK Series CRYOCOOLER 49 OPERATION MANUAL Sumitomo Heavy Industries Ltd 6 TROUBLE SHOOTING FLOW CHART The major trouble at the customer site can be solved by following trouble shooting flow chart In case the trouble can not be solved by these flows please make contact to SHI Sumitomo Heavy Industries Ltd Cryogenics Division Address 2 1 1 Yato cho Nishitokyo City Tokyo 188 8585 Japan TEL No 81 424 68 4240 FAX No 81 424 68 4219 E mail cryo shi co jp URL http www shi co jp cryopage Customer Support TEL No 81 424 68 4264 FAX No 81 424 68 4462 Oversea Bases SHI APD Cryogenics Inc Adress 1833 Vultee Street Allentown PA 18103 4783 USA TEL No 1 610 791 6700 FAX No 1 610 791 0440 E mail sales apdcryogenics com URL http www apdcryogenics com Sumitomo SHI Cryogenics of America Inc Adress 870 Cambridge Dr Elk Grove Village IL 60007 USA TEL No 1 847 290 5801 FAX No 1 847 290 1084 E mail scaimain aol com SHI APD Cryogenics Europe Ltd Adress 2 Eros House Calleva Industrial Park Aldermaston Berkshire RG7 8LN UK TEL No 44 118 981 9373 FAX No 44 118 981 7601 E mail marketing apd cryo demon co uk SHI Cryogenics Europe Gmbh Adress Dolivostrasse 9 D 64293 Darmstadt Germany TEL 49 0 6151 86061 0 FAX 49 0 6151 800252 E mail Yst_Taguchi shi co jp H Fontes shicryo e de SRDK
119. y result in misoperation or malfunction Be sure to check the flat rubber gasket of the self seal coupling of the cold head and compressor unit for dirt dust or to see whether the flat rubber gasket is attached correctly before connecting the flex lines Connecting the flex lines with an abnormal flat rubber gasket setting may cause escape of gas When connecting the flex lines to the cold head be sure to start with the flex line on the Return side Starting with the flex line on the Supply side may cause misoperation This cryocooler cold head compressor unit compressor adsorber flex lines is shipped with a helium gas at about 1 62 MPa 16 5 kgf cm G 235 psig sealed in Be sure to adjust the pressure to an appropriate value according to the cold head used before operating the equipment Using the cryocooler at an improper pressure may cause misoperation The cold head drive switch provided with the compressor unit is only used for maintenance Be sure to turn it OFF in normal operation Using the compressor unit with the cold head drive switch turned ON may result in misoperation or malfunction The coldhead employs the special seal to the 2nd stage The 2nd stage displacer is fit tightly in the cylinder Make sure the 2nd stage temperature is less than 28 deg C before starting up the cryocooler or the coldhead may make grinding noise Pay attention to the contamination when charging a helium gas The contamination may result in o

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