Home

EPEX Omniflex Service Manual.book

1. AEC Board The AEC board shown below is compatible with various makes models of ion chambers for example AID GE Vacutec Philips Amplimat This AEC board is used as the Generator requires short AEC time compensation The EPEX board is fitted with 12 pin in line connectors J1 to J4 Figure 4 9 CPI CANADA INC Made in Canada Dedicated lon Chamber AY ION CHAMBER R79 AEC Boards S 214 T E 35 J4 TN E J13 NN NN NJ J3 j J12 E ER S J2 J11 pem r R11 R12 R13 R14 sieele m m J1 R1 R2 R4 119 7 felo gt Note not adjust unless AEC board input assignment Ch 1 J1 J11 the AEC preamp calibration range The R1 potentiometer is used for channel 1 AEC gain adjustment The R11 potentiometer is used for channel 1 short AEC exposure time compensation R79 adjusts the output of the high voltage bias supply This is only fitted on versions of this board intended for use with ion chambers which require a separate high voltage bias supply R79 adjusts the value of the 300 and or the 500 and the 45 Vdc outputs and should be set as per the ion chamber manufacturer specifications Adjustments and Calibration 4 43 EPEX Omniflex IV System Service Manual
2. PB20_030 CDR It is strongly recommended that the door interlock be wired to the Generator before preparing to make any exposures Door Interlock The room door interlock switch must be wired to TB4 11 and TB4 12 on the room Interface board This switch will provide a closed contact when the door is closed If no interlock is available these pins must be jumpered Cable the X ray Room Warning Light for Power Installing the System Hardware Incoming power for the X ray room warning light is through the Generator 3 27 EPEX Omniflex IV System Service Manual To install the power to the warning light Step Action 1 Verify that the X ray room warning light and its power cable have been installed by the customer Check the circuit breaker box and ensure that the power is Check the power cable from the X ray room warning light according to Figure 3 20 Install the power cable to TB4 11 and TB4 12 of the room interface PCB Refer to Figure 3 20 Figure 3 20 Room Warning Light Warning g 11 Customer Supplied Cabling 14 AWG 300 V 12 Excess Cabling 3 28 IM x Power Source Room Light 100 W maximum Not provided by Generator MC20_290 CDR All cables that interf
3. Figure 3 2 RECOMMENDED Typical EPEX CLG HT Omniflex IV Room 9 6 290cm Layout 15 0 _ 457cm RECOMMENDED 5 6 DOOR 107cm E o N p LIN CONTROL ET 1 N LIS I EXISTING 3 0 DOOR DK20 092 cdr 92cm Installing the System Hardware 3 8 EPEX Omniflex IV System Service Manual Positioning the Equipment After the equipment has been moved to the room and unpacked position the major components as shown on the site planning drawings Ensure that there is enough room between the components and the walls or other equipment to complete the installation of components and cabling before final placement Positioning the Generator Figure 3 3 Generator Cabinet Rear View Installing the System Hardware Locate the Material Safety Data Sheet and the Configuration List and make copies Originals are left on site Send copies of these and the CDRH Workbook to the Installation Coordinator Position the Generator according to the room layout drawing near the final destination leaving clearance for connections to the back panel Refer to Figure 3 3 Key points to remember in moving the Generator cabinet If the door size is 2134 x 864 mm 84 x 34 in or more the Generator can be transported through the doorway while upright If the door size is less than 2134 x 864 mm 84 x 34 in
4. A 2 Overhead uus inania He ilta tenes A 3 Overhead Tube Crane Physical Specifications A 5 DirectRaviConsole ed MR aea paa dps wan tip 7 Xray CIEDOEdLOE sos eb qeu etii iate in edes A 8 X ray Generator Physical A 9 Xray A 10 Ra diosraphic N ES 11 12 Transiti STORAGE MOM Ue ce cds 12 A A 12 Installation Requiremellts a2 eroe A 12 BEIOORIBE setas dedi A 12 deua Qus au CE A 12 viii Contents Contents EPEX Omniflex IV System Service Manual Appendix B Recommended Tools eoe Shakes Electrical Tools Test Equiprmefit siye re Ren Appendix C Forms System Installation eicere entities es cessuananavtecenans System Calibration MONS oua eese Preventive Maintenance Forms eee Appendix D Field Replaceable Units Ordering Parts A E E Appendix E EPEX Omniflex IV System Wiring Diagrams Glossary About This Manual Intended Use This manual
5. kVp 50 55 65 75 85 95 110 120 Delta 1 5in f5in 83i 3in 45 45in 6in 6in N A DV Mean Reference 5 15 N A requirement Delta lt 200 to the acquired DV Mean at 65 kVp Pass EPEX Omniflex kVp Compensation for Film 2A cdr Adjusting the Final lon Chamber Preamplifier Gain mR mR mAs AEC Target mAs DV Mean Pass EPEX Preamplifier Gain cdr Verifying lon Chamber Preamplifier Balance Setup Grid Speed medium kVp 60 mA 25 Phantom 0 in Field Size auto Balance Data Portrait AEC Detector s 1 2 Detector Selected 11 Ctr Exposure ms 3 Rt Landscape 5 Rt Portrait Inverted 4 Rt Pass EPEX lon Chamber Balance cdr EPEX Omniflex IV System Service Manual Preventive Maintenance Forms On the following pages are the forms required when performing system preventive maintenance including e Semi Annual e Annual For preventive maintenance forms for system components refer to service manuals that came with the system Forms C 23 Semi Annual Preventive Maintenance Checklist Inspection Date Site System Inspection Comments g Clean and re grease all HV connections using vapor proof compound g Clean the main cabinet as needed Refer to the Generator service man
6. Located inside door on front of tank MC20 166a CDR DirectRay Console Labels The location of the DirectRay Console Labels are shown in Figure 1 2 Figure 1 2 1 Located on back Location of the d DiredRay Conds DirectRay Console 4 Identification Labels EZ gu lOLOGIC DIRECT RADIOGRAPHY OPERATOR CONSOLE Model DROC Sorial No Date of Manufacture E0044 This product complies with applicable provisions of the following standards 60601 1 ENGO IECG0601 1 4 ies with radiation WARNING This x ray unit may be dangerous to patient and operator unless safe exposure factors and operating instructions are observed Federal law restricts this device to sale or use by or on the order of a medical professional CAUTION To prevent electrical shock remove cover No user MC20 357 1 CDR Safety Information 1 13 EPEX Omniflex IV System Service Manual Radiographic Table Labels The location of the Radiographic Table identification labels are shown in Figure 1 3 Figure 1 3 as Location of the Radiographic Table Identification Labels 2 Integrated Radiographic Table Product Description Integrated Radiography MANUFACTURED BY MODEL NUMBER IRT Table DEL MEDICAL SYSTEMS GROUP 11550 W TF SERIAL NUMBER Model Designation IRT ING STREET FRANKLIN PARK IL 60131 U S A MANUFACTURED Catalog Number 010 1172
7. EPEX Omniflex IV System Service Manual P N 8000 EPEXOMNISM Revision A August 8 2005 August 2005 The information contained in this manual is confidential and proprietary to Del Medical Imaging Corporation This information is provided only to authorized representatives of Del s customers solely for the purpose of facilitating the use of Del s products No information contained herein may be disclosed to any unauthorized person for any purpose whatsoever without the prior written consent of Del Medical Imaging Corporation The information in this document is subject to change without notice Copyright 2005 by Del Medical Imaging Corporation All rights reserved DirectRay is a registered trademark of Direct Radiography Corp This manual was originally written in English in the United States Printed in the U S A All trademarks registered trademarks and product names used within this document are the property of their respective owners Del Medical Imaging Corporation 11550 W King Street Franklin Park IL 60131 USA Tel 847 288 7000User Support 877 371 4DRC 371 4372 Fax 781 280 4788 Federal USA Law restricts this device to sale by or on the order of a physician or properly licensed practitioner CAUTION Attention Consult Accompanying Documents As Applicable Del Medical Systems Group 11550 West King Street Phone 1 847 288 7000 Franklin Park IL Fax 1 847 288 7011 60131
8. Using the measure function measure the size of the X ray field Note The measurement should be set to 196 greater than indicated 10 596 This accuracy is to ensure full coverage of the DirectRay Detector If this measurement is not correct refer to the OTC or Collimator service manuals that came with the system for the adjustments Checking the Size of the X ray Field to Collimator Indicated Size To check the size of the X ray field to Collimator indicated size Step Action 1 A Q N Set the Collimator blades to 18 x 14 indicated on the Collimator at 100 cm Note No 45 angle is necessary for this procedure Make an exposure at 70 kVp and 8 mAs Accept the image View the image in DRIVEL Using the measure function measure the size of the X ray field Note The measurement should be set to 2 of SID If this measurement is not correct refer to the OTC or Collimator service manuals that came with the system for the adjustments 4 34 Adjustments and Calibration EPEX Omniflex IV System Service Manual Checking the Size of the X ray Field to Collimator Indicated Size Full Field at 180 cm To check the size of the X ray field to Collimator indicated size at 180 cm Step Action 1 ON A Q Set the Collimator indicated size to 43 x 35 cm at 180 cm SID using the Auto function on the Collimator face Turn the Collimator to a 45 angle to the DirectRay Detector No
9. amm jpiidsoH aaug Aqsoug Se 0190 10H NI LOvl O Z1L0 YW PJ0Jpeg uv OL 6 1H9I3H 9NEII39 WAWIXVN B uot b 6 1H9I3H ONES WDWININ 3LON w298 ae 009 r 5 3AO8V S3inO N SNOILVOO AVMAYIM ONIMOHS HOL3 S HLIM 3215540 SNINNVId JUS SISOIOH OL 1 SNIH33NISN3 wag 801 w912 6x zzz R ooo l3NIBVO HOIVH3N39 O JI8ISSOd H3JA3H3HM SAVM3BIM OLSIXA 350 NIM SH3TIVISNI LNAWdINDZ ALON uL 97 82 008 SNOILVINDWS SONIGVOT 21045135 1IN3AdInO3 AlddNS THM 9190 10H 4096 99 982 aog Z ayol MAN JHL 1MOddnS OL m v8 ose W31SAS V NOIS3Q XO IXO ONILSIX3 ALIBOSLINI WHNALONALS JHL 7 WINO NSHLIS LSAW H33NION3 WAYNLONYLS WNOISS3JOHd S 1WLIdSOH 54 oze warsas xada SENL GVAHYSAO 3HL X04 904 005 38 TIM 9159 lHOdd S INS3IVAIQO3 YO LOHISIND V 2 ALON JHOISH S81 LM a na 530 WALI LSIDISAHd NOILVIGVY Q3SN3O I S H3AOISO AB XO AG GANDISSG 38 OL NOILO31OMd NOILVIOvH Tv LHSISH 9 Q33OX3 OL LON STIVM HLOOS ONINOO ONILSIXS YO MAN L ALON Nawanda waan pueboe 1ueuud
10. buttons To set the month choose Month and press the or buttons To set the day choose Day and press the or buttons To set the hour choose Hour and press the or buttons To set the minutes choose Min and press the or buttons To return to the Utility menu choose Exit To return to the Generator Setup menu if you have no further changes to make choose Exit again 4 3 EPEX Omniflex IV System Service Manual Error Log The ERROR LOG menu allows you to review the error messages stored in the Generator s error log Parameters such as kV mA time receptor focus tech selection field film screen and fluoro parameters are displayed simultaneously on the console LED displays Step Action 1 From the Utility menu choose Error Log 2 To scroll through the error log choose Error and press the or buttons 3 To return to the Utility menu choose Exit 4 To return to the Generator Setup menu if you have no further changes to make choose Exit again Statistics The Statistics menu shows the tube exposure count accumulated fluoro hours if applicable and the accumulated Generator exposure count You can reset counters from this screen Step Action 1 From the Utility menu choose Statistics 2 To reset the tube exposure counter choose Reset Tube 1 Exp 3 To reset the fluoro exposure counter choose Reset Fluoro Hours 4 To return to the Utility menu choose Exit 5 To retu
11. 0 UL Listed Device LISTED us UL Recognized Device G p CSA Listed Device C US ely ETL Listed Device ister Safety and Compliance 1 8 Exposure to ionizing radiation such as X rays can be hazardous United States federal regulations establish appropriate exposure limits so that the patient the operator and the general public are not exposed to such radiation unnecessarily Personnel operating systems such as the EPEX Omniflex IV must be trained and qualified They must be familiar with established regulations and understand the risks associated with the operation of a X ray system They must know what action to take if and when a hazardous situation arises For a more complete understanding of radiological hazards and their control X ray system operators are referred to publications such as e Medical X ray Electron Beam and Gamma Ray Protection for Energies up to 50 MeV Equipment Design Performance and Use Report No 102 National Council on Radiation Protection Safety Information Omniflex IV System Service Manual e Medical X Ray Protection up to Three Million Volts Handbook No 76 National Bureau of Standards National Institute for Standards and Technology In addition to ionizing radiation other safety concerns are addressed by various U S Canadian and international standards The component parts and subsystems used in the EPEX Omniflex IV System have all been tested for complia
12. Precalibration Notes This topic contains information that must be understood and confirmed prior to and or during AEC calibration The procedures in these topics require X ray exposures Take all safety precautions to protect personnel from X radiation CAUTION Should an improper technique be selected or an AEC fault occur causing no AEC feedback signal to the Generator the exposure will terminate if the ramp voltage fails to reach 4 of the expected ramp voltage when the exposure time reaches 20 of the selected Back Up Time BUT e During calibration all AEC exposures should be done using mA values that result in exposures in the 50 to 150 ms range unless stated otherwise During AEC calibration always ensure that the central ray is centered relative to the image receptor Ensure that the Collimator is opened sufficiently to cover all fields on the AEC pickup device Ensure that the absorber is positioned to fully cover the X ray field The absorber must extend a minimum of 3 8 in 10 mm beyond the X ray field All components assemblies used during AEC calibration must be those which will be used during procedures and must be positioned as they will be in actual use of the X ray room The Generator must be calibrated before proceeding During AEC calibration if the exposure times do not change when the mA is varied it may be that the input signal level to the AEC board is too high If this happens ch
13. Radiographic Table DROC R E 120 amp 230 Certified Component various DR0033 DR0014 ICX 936 B 150 Certified Component CTO010 Certified Component 010 1172 2 13 Omniflex IV System Service Manual Compatible Output Devices If the image is acceptable the data is stored or printed For an illustration of sending the images via DICOM format to the printer refer to the illustration below The EPEX Omniflex IV System supports output to DICOM Print Service Class and DICOM Storage Service Class providers The details of compatible PACs Devices and Printers are shown in Table 2 1 on page 2 15 and Table 2 2 on page 2 16 Contact your 2 14 Figure 2 9 Peripheral Devices representative for an updated compatibility list DICOM Print SCU Calling Application Entry DICOM Storage SCU Calling Application Entry N CREATE N SET N ACTION N DELETE N GET C STORE DICOM Printer DICOM Printer DK10 011 eps General Information Table 2 1 PACs Devices EPEX Omniflex IV System Service Manual Software DICOM Platform Conformance Manufacturer Model Type Service Basis Version Comments Agfa Impax 3 5 PACs Store Complete Cannon Wrkst Store Rational Ver 3 2 Jan 1998 Complete Imaging GE Medical IIS PACs Store P N 4361668 Complete Rev 01 1998 Kodak RadWorks Werkst Store Applicare DCM 1007 002 Complete 00 002 Ver 2 1a Aug 1999 Kodak Ar
14. The active area of the Detector Array that is projected to the outer surface of the unit Crosswise Lying perpendicular to the longitudinal axis of the body The result of exposing the X ray device to an insufficient amount of X rays Especially equipped power supply that uses a battery backup to make sure there is continuous steady power in the line regardless of voltage drops or a total loss of standard power Uninterruptible Power Supply GL 11 EPEX Omniflex IV System Service Manual View Prescription for the technique factors and geometric arrangement of the X ray source patient and image sensor that yields and image of organs of interest seen on a specific orientation Visit A set of studies identified in a locally unique manner and performed on a particular patient at a particular site for a particular reason A visit is normally identified by an accession number or a Visit ID and is associated with a diagnosis Windowing Software manipulation that compensates for a monitor s inability to provide the same contrast and bit depth as the original hardcopy X ray Wiring Adaptable Machine The Operator Console interface connection to all the other system Interface WAMI components X ray Film Speed Class The measured speed of a screen film system depends on a number of variables such as the kVp amount of scatter radiation X ray absorption by the cassette or X ray table top and the way the film is processed GL 12 Gl
15. the Generator must be tilted to the left to clear the doorway 3 9 EPEX Omniflex IV System Service Manual To position the Generator Step Action 1 Remove the Generator from the shipping packaging by cutting the bands that secure the cardboard sleeve to the shipping pallet 2 Lift the shipping sleeve off the shipping pallet and put aside The generator should be the only thing attached to the shipping pallet 3 Locate the Material Safety Data Sheet and the Configuration List Note These will need to be copied Place a copy in a sleeve in the service manual and return the original to the Del Installation Coordinator 4 Check for shipping damage Immediately contact the shipper if any damage is detected 5 Unscrew the bolts that secure the Generator to the shipping pallet Note There are four bolts one in each corner 6 Use lifting straps to lift the Generator from the shipping pallet Note Three to four people are required to accomplish this three to lift and one to pull away the crate bottom Figure 3 4 Generator on Skid with Container Removed Shipping Pallet N Use caution if the straps are located at the back of the lower wiring channel CAUTION 3 10 Installing the System Hardware EPEX Omniflex IV System Service Manual Step Action 7 Loosen the shipping seismic plates by the leveling feet flip them inside and tighten them 8 Move the Generator to a location close to the f
16. EPEX Omniflex IV System Service Manual System Calibration Forms On the following pages are the forms required when calibrating the system using the procedures in Chapter 4 Forms C 9 Testing Calibration Detector Array Centerline LONG error 2 ci LAT error C D 2 of X ray Field Ctr Ctr error error LONG bed s 25 mm Longitudinal x 20 mm Lateral cm LONG x cmLAT cm LONG x cmLAT Indicated size Light field size X ray field size Light to X ray center center error mm Crosshair to X ray center center error cm Detector Array to X ray center center error cm Crosshair to Detector Array center center error cm requirement error 2 SID Pass VA requirement error 196 SID EPEX Testing Calibration cdr AEC Preliminary Overall Gain Calibration AEC Preliminary Overall Gain Measured DV for Image Center ROI Cell 2 Pass EPEX Preliminary Overall Gain cdr AEC kVp Compensation for Film Screen 2 kVp 50 55 65 75 85 95 110 120 Delta Phantom 15in 1 51 45in 45in 6in Gin NA Thickness AEC ms N A DV Mean Reference 615 578 515 460 410 3 75 282 248 N A requirement Delta 200 to the acquired DV Mean at 65 kVp Pass EPEX Omniflex kVp Compensation for Film 2 cdr 2nd Iteration AEC kVp Compensation for Film Screen 2
17. EUROPEAN REPRESENTATIVE Eea This product complies with applicable VILLA SISTEMI MEDICALI VIADELLE AMERS provisions of the following standards 20090 BUCCINASCO MI EN60601 1 60601 1 2 EN60601 1 3 60601 2 32 Manufactured USA Month Year ITALY By DEL Medical Systems Group 0120 11550 W King Street LABEL P N 408 5119P1 Franklin Park 60131 Serial Number THIS DEVICE COMPLIES WITH TITLE 21 CHAPTER SUBCHAPTER J OF THE US CODE OF FEDERAL REGULATIONS V LABEL P N 408 5124P1 1 14 Safety Information Omniflex IV System Service Manual Radiation Safety Safety Everyone associated with X ray work must be familiar with the recommendations of the Center for Devices and Radiological Health CDRH the National Institute for Standards and Technology NIST the National Council on Radiation Protection NCRP and the International Committee on Radiation Protection ICRP Be sure that all personnel authorized to operate the X ray system are familiar with the established regulations of the authorities named above All personnel should be monitored to ensure compliance with recommended procedures Current sources of information include National Council on Radiation Protection Report No 33 Medical X ray and gamma ray Protection for Energies up to 10 MEV Equipment Design and Use National Bureau of Standards Handbook No 76 Medical X ray Protection up to T
18. Flat circular plate with a surface layer on which data can be stored by magnetic recording Array of numbers in rows and columns Milliampere seconds Combined with kVp it indicates the dose of X rays Portion of a structure or part that is nearer to the midline than some reference point The opposite of lateral A unit of measuring radiation does equal to one thousandth of a RAD Image generating equipment such as CT MR and conventional X ray machines A mathematical procedure for providing an objective measurement of the combined effects of sharpness and resolution The MTF represents a ratio between the information recorded and the total amount of information available The MTF is usually calculated from the corresponding line spread function by a complex mathematical operation known as the Fourier transformation The pattern distinct from its components Moving Grid Noise Nyquist Frequency Oblique Opaque Operating System OS Overexposure PA PACS Peak kilo volts kVp Penetration Photons Photostimulation Picture Archiving and Communications System PACS Pitch Pixel Portrait Position Posterior Projection Radiography Procedure Prone Proximal Quality Quantity RAD GL 8 EPEX Omniflex IV System Service Manual Grid that moves according to a preset time of exposure or reciprocates continuously Noise destroys image quality The highest frequency that can be accurately reproduced
19. 11 Repeat steps 1 to 10 until the two holes are within 0 5 12 13 This position now represents the position of the central beam directly over the DirectRay Detector center Verify bead overlap is maintained from MIN to MAX VSID If necessary interactively adjust the X ray tube transverse and longitudinal position Set the transverse center table detent 4 28 Adjustments and Calibration EPEX Omniflex IV System Service Manual Verifying VSID X ray Field Centered to the DirectRay Detector Center To verify VSID X ray field centered to DirectRay Detector center Step Action 1 Using the measure function in DRIVEL measure from the central beam spot on the beam alignment tool to all four edges of the black X ray field Note The central beam should be centered so that the distances to all four sides are equal It is not necessary at this time to align the X ray field to the Bucky Initiate exposure Accept the image in DRIVEL Interactively adjust the location of the X ray field until it is centered in portrait and landscape Note 21CFR allows a 2 error in this alignment In order to ensure image quality and correct alignment it is suggested that a 1 error or better 1 cm total at 100 cm be achieved Adjustments and Calibration 4 29 EPEX Omniflex IV System Service Manual Aligning the Collimator Light Field to the X ray Field Note If the light field to the To align the Collimator li
20. 135 Tower rotation 180 Base assembly rotation 180 Input voltage 110 230 Vac Input frequency 50 60 Hz Input power 1 0 maximum Length 488 cm 192 in Width 488 cm 192 in Minimum ceiling height 282 cm 111 in Recommended ceiling height 290 cm 114 in Maximum ceiling height 300 cm 118 in Minimum width 102 cm 40 in Minimum height 198 cm 78 in 2000 psi minimum Environment Transit Storage Operating Installation Requirements Flooring Ceiling EPEX Omniflex IV System Service Manual Temperature Maximum gradient Relative humidity Maximum gradient Temperature Maximum gradient Relative humidity Maximum gradient Maximum altitude Maximum vibration Pressure Leveling Load Bearing Suggested Height 20 to 45 C 4 to 113 F assuming the DirectRay Detector is shipped in a Del insulated shipping container 15 C 27 F per hour assuming the unit is stored in a shipping container approved by Del 30 to 80 allow condensation dry time before installing 10 per hour 10 to 35 C 50 to 95 F 5 C 9 F per hour 10 to 80 non condensing 10 per hour 3 000 m 10 000 ft 0 5 GRMS 13 5 to 20 5 psia 700 to 1060 hPa Flat and level within 3 mm 0 12 in in both directions over the entire equipment area Capable of supporting the operating weight of the equipment For more information refer to the specificatio
21. 180 0476 Cable Car Arm amp Bucky Pos 180 0477 Cable Panel Handle Arm A amp B 180 0478 Cable Rotation Sensor amp PCBs 180 0479 Ion Chamber 36 V PS 180 0488 Cable Position Sensor 180 0489 Cable Bucky Rotation Sensors 180 0536 Cable Array Controller 85 ft Field Replaceable Units Field Replaceable Units EPEX Omniflex System Service Manual Appendix EPEX Omniflex IV System Wiring Diagrams This appendix includes the schematics for the EPEX Omniflex IV System Accession Number AEC Air Gap Technique Algorithm Aliasing Amorphous Selenium aSe Amorphous Silicon aSi Analog Angiography Anode Anterior Antiscatter Grid AP Archive Articulation Glossary The glossary contains general terms that are used in the service manual In DICOM a term to uniquely identify a visit to a site by a patient The meaning and use of accession numbers is not consistent in medical information The DirectRay System uses the DICOM definition of the term Automatic Exposure Control A technique that is sometimes used for chest radiography instead of using a grid A mathematical method for solving a problem Phenomenon of interference that occurs when a signal being sampled contains frequencies that are higher than half the sampling frequency Typically can be seen as ragged edges on the horizontal lines According to the Nyquist criterion the sampling frequency must be at least twice the
22. Testing Calibration Detector Array Centerline chlo ot X ray Field Indicated size Light field size X ray field size requirement error lt 2 SID m d Adjustments and Calibration Ctr Ctr error V LAT error LONG error Light to X ray center center error Crosshair to X ray center center error Detector Array to X ray center center error Crosshair to Detector Array center center error 4 4 B 25 mm Longitudinal x 20 mm Lateral cmLONG x cm LAT cmLONG x cm LAT mm VA requirement error lt 1 SID EPEX Testing Calibration cdr EN f s a t iom mn PS uem uam D inem urit anm amt enum 4 37 EPEX Omniflex IV System Service Manual Calibrating the DirectRay Detector 4 38 The DirectRay Detector should be calibrated weekly at the routine chest orientation of 72 in HSID In addition if the daily flat field exposure procedure produces image tones that are not uniform or are otherwise unsatisfactory the DirectRay Detector should be calibrated To calibrate the DirectRay Detector Step Action 1 Ensure that the DirectRay Detector has been powered on for at least one hour so that it has reached thermal equilibrium 2 Ensure everyone is out of the X ray room 3 In the DirectRay Console application s main window close any open studies and ensure that no patient is selected 4 From the Admin menu choose Calibrate The Calibratio
23. system control interface The system control interface returns explanatory information The error is reported once then cleared Command errors include but are not limited to Command field errors Unsupported commands Out of sequence commands Communication protocol errors e System Errors are due to errors detected in the DirectRay Controller In this case the error status is reported through the system control interface System errors prevent Normal type scan commands from being executed An attempt to send these commands will fail Commands that are not related to generating images for medical diagnostic purposes will work normally Diagnostics and Troubleshooting 7 5 EPEX Omniflex IV System Service Manual The error and warning reporting system is illustrated in the following figure Figure 7 3 E SYSTEM RESET Error and Warning Ea 58 System DRSTATE_POST DRSTATE SLEEPING PANEL ON PANEL OFF REQUEST REQUEST POST FAIL POST PASS DRSTATE POS ERROR DRSTATE Y CONDITIONING ARRAY DRSTATI STARTUP CONDITIONING CONDITIONING STARTUP_ COMPLETED REQUEST COMPLETE DRSTATE READY amp lt DRSTATE_READY _UNCALIBRATED START_SCAN DIAGNOSTIC_ START_ Sai Seay RESETTING_ARRAY_ COMPLETED DIAGNOSTIC P COMPLETED Set Siagnostic Start Diagnostic NOTE Diagnostic scans Results gst DRSTATE only possible from the DRSTATE_READY state RESETTING_ARRAY p
24. use Irregular movements or other malfunctions should be repaired immediately The Overhead Tube Crane OTC Radiographic Table and all accessories should be inspected for worn loose bent or broken parts Preventive Maintenance Schedules and Checklists 5 2 The Semi Annual and Annual preventive maintenance checklist forms are shown on the following pages You should perform the tasks listed on the forms given the preventive maintenance schedule s currently required for the site Reproducible copies of these forms are provided in Appendix C Preventive Maintenance EPEX Omniflex IV System Service Manual Semi Annual Preventive Maintenance Semi Annual Preventive Maintenance Checklist Preventive Maintenance Inspection Date Site System Inspection Comments g Clean and re grease all HV connections using vapor proof compound Clean the main cabinet as needed Refer to the Generator service manual Perform the X ray tube auto calibration routine Refer to Chapter 4 Verify the calibration of the Generator Refer to manufacturer s documentation g Perform any additional tests required by laws governing this installation Perform a flat field exposure to check image quality Check cables inspect for cable sheath wear pinching or excessive bending Perform mA Calibration Perform DirectRay Controller Calibration
25. 0035 Bucky Fan Assembly 2 590 0036 Bucky Grid Slide Block W Harness 1 590 0037 Bucky Flag Grid Position 1 590 0038 Bucky Top Cover Plate 1 590 0039 Bucky Spring Plunger 1 590 0040 Bucky Drive Assembly 1 590 0041 Bucky Vertical Link 1 590 0042 Bucky Door Access 1 590 0043 Bucky Latch Door upper lower 1 590 0037 Bucky Flag Grid Position 1 590 0038 Bucky Top Cover Plate 1 590 0039 Bucky Spring Plunger 1 590 0040 Bucky Drive Assembly 1 590 0041 Bucky Vertical Link 1 590 0042 Bucky Door Access 1 590 0043 Bucky Latch Door upper lower 1 590 0044 Bucky Slide Linear Bearing 1 590 0045 Bucky Hinge Pin Door 1 590 0046 Bucky Hinge Bushing 1 590 0047 Bucky Hinge Block 1 590 0048 Bucky Grid Locating Pin 1 590 0049 Bucky Home Sensor 1 590 0050 Bucky Bumper 1 of 2 1 590 0051 Bucky Bumper 2 of 2 1 010 1167 Focus Grid Mid Range 1 010 1166 Ion Chamber 5 Field W Pre Amp 1 Field Replaceable Units D 5 Omniflex System Service Manual Part Units per Component Number Description Assembly CPI 590 0052 Fuse 60A 600 V OTS60 5 590 0053 Fuse 2A 500 V Time Delay FNQ2 5 590 0057 Fuse 1 6A 250 V Slow Acting GDA1 6 15 590 0058 Fuse 2A 250 V Slow Acting GDA2 15 590 0059 Fuse 2 5A 250 V Slow Acting GDA2 5 15 590 0060 Fuse 5A 250 V Slow Acting GDA5 15 590 0062 Fuse 10 A 700 V Fast Acting A70P10 1 5 590 0086 AEC Board 1 590 0088 Generator
26. 3 35 3 1 Overview Staging the System Safety Equipment 3 2 5 EPEX Omniflex IV System Service Manual This topic details the tasks you must do before installing the EPEX Omniflex IV System The topics covered are e Safety equipment needed e Personnel required Tools and equipment needed e Room preparation e Checking the ceiling Before shipping the system to the site Del stages the entire system at the factory Therefore The longitudinal rails are precut to the proper length e The cables are properly bundled for your site layout The Overhead Tube Crane OTC consists of heavy rails cables cable carriages and heavy equipment that hang from the ceiling While installing this equipment you must protect yourself from falling assemblies tools and miscellaneous fasteners and components that may cause serious injury to you and or other installers in the room Lifting and moving some of the assemblies can be dangerous because of their weight Wear a back support when lifting heavy objects The following safety items must be worn during the installation of the equipment suspended overhead Safety hat Safety glasses Back support Safety shoes Installing the System Hardware Personnel Required EPEX Omniflex IV System Service Manual Do not attempt to install this equipment with less than two people three people is preferable Each person should wear the proper safety equipment during the inst
27. 5 4 Rt Rt Pass m Pas ome A me aem EPEX lon Chamber Balance cdr imme Pants opa 4 53 EPEX Omniflex IV System Service Manual 4 54 Adjustments and Calibration Chapter 5 Preventive Maintenance Service procedures must be performed by trained personnel only This chapter contains system preventive maintenance schedules and checklists Serviceability and Repairability All provided products and associated components are designed for replacement or service in a hospital environment Repair of the DirectRay Detector the DirectRay Controller and the DirectRay Console is to be done only by Del authorized representatives Contents Subject Page In Service Observation 5 2 Preventive Maintenance Schedules and Checklists 5 2 System Preventive 5 6 5 1 EPEX Omniflex IV System Service Manual In Service Observation Observe the operation of the locking mechanisms as the Tower and Bucky are prepared for use If the mechanism fails to lock or release the unit should immediately be removed from service and the failure repaired Observe the operation of the DirectRay Detector rotation mechanism each time orientation is changed Irregular movements or other malfunctions should be repaired immediately Observe the movement of the Radiographic Table as it is positioned for
28. Blade Screwdriver Phillips No 3 Blade Screwdriver Slot 1 4 in Blade Screwdriver Slot 1 8 in Blade Screwdriver Slot 3 16 in Recommended Tools Recommended Tools EPEX Omniflex IV System Service Manual Blade Screwdriver Torx No T10 Blade Screwdriver Torx No T15 Blade Screwdriver Torx No T20 Blade Extension 4 in Blade Extension 7 in Cable Patch and Coupler RJ 11 Cable Patch and Coupler RJ 45 Cable Universal DB 25 8 ft Cable Ties Assorted 100 Crimp Tool Multi purpose Desoldering Tool Antistatic Extension Cord All weather 10 ft Flashlight Miniature Gender Changer DB 25 Female to Female Gender Changer DB 25 Male to Male Hammer Ball Pein Handle Blade Regular Handle Tee Ratcheting Hemostat Seizers Straight 5 in Hex Key Set Inch Hex Key Set Metric Knife Precision Measure Tape 12 ft Mirror Inspection with Magnet Oiler Instrument 2 ounce Parts Boxes Plastic 2 Pliers Cutting Diagonal Small 4 in Pliers Cutting Diagonal Standard 5 in Pliers Locking Vise Grip 5 in Pliers Nose Chain Small 4 in Pliers Utility 6 in Pliers Utility 10 in B 3 EPEX Omniflex IV System Service Manual Pliers with Cutter Long Nose 6 in e Scale Metal 6 in Scissors Electrician s e Screwdriver Phillips Large No 3 e Screwdriver Jeweler s e Screwdriver Pocket Combination e Screwdriver Reversible Stubby e Screwdriver
29. Bunos V OOL Dunpy 4euuojsup4 uonngusiQ LOLF e oyoA eur MeL ion IPA WON 984 ZH ZH 09 06 esoud seJu isjuaWasinbay au buiwooul Suisuapuo5 uoN TAYPILUNH 296 OL UJOOM N 0 Y 9 07 4 vOL 2 01 3 05 YOLOWYLNOD A8 GATWLSNI Q3lddns SuoIi1ooljioedg 07 1 b NYOS 3 5 Installing the System Hardware EPEX Omniflex IV System Service Manual EPEX Omniflex IV System Installation Checklist As the installation progresses use the checklist as a guide The EPEX Omniflex System Checklist provides a reminder of the critical 3 6 steps for installation oooodo EPEX Omniflex System Installation Checklist Delivery Completed Equipment Unpacked Return the Detector Array TempTale Positioning the Equipment Operator Console Installation UPS Charged and Grounded CPU Connected Array Controller WAMI Monitor Cabled for DRAC and Operator Console CPU Keyboard Pointing Device Barcode Reader Modem Serial Extension Bar Remove Casters Seismic Anchoring if applicable x OOooocoaoococo ogo ray System Installation Position Generator Asemble the Electroncs Box on the Generator Verify Line Voltage Configure Generator Mains Check Secure Board Seating Verify Internal Connections oooooodo Install
30. Detail Transformer Transmission Window Transverse Underexposure Uninterruptible Power Supply UPS UPS Glossary EPEX Omniflex IV System Service Manual The area where the Del representative unpacks and assembles the components of the system Technique of viewing objects from two slightly different angles to give a perception of depth A specific instance of a procedure consisting of a set of X ray images Lying face up A technique is a combination of X ray parameters KVp mA time that are defined for a particular procedure Any of the parameters describing the properties of an X ray beam including beam energy kVp beam intensity mA exposure mAs duration seconds and at times the Source to Image Distance SID Person trained in the technique of producing an X ray image Thin Film Transistor Pertaining to the region of the chest A three phase Generator produces an almost constant voltage because there are no deep valleys between pulses Commercial electric power is usually produced and delivered by three phase alternating current ac Generators Process of putting two TFT arrays together Method of producing a 3 D image of internal objects by comparing the X rays that are absorbed at various angles Any of the small strand of connective tissue projecting into an organ and constituting part of the framework of that organ Device that either increases or decreases the voltage in a circuit
31. L 3 phase L 2 phase to L 3 phase Driver Auxiliary Board Voltage Vac F4 to F6 Inital Verify that the voltage is 400 Vac Verify there is no voltage present across any main input phases Verify that the red LED Ds1 is lit Pass RADEX Initial Volt Measurement cdr EPEX Omniflex IV System Service Manual Checks After Power Up Turn on the 3 phase 480 Vac to the Generator cabinet at the wall circuit breaker Verify LED lights on center of Generator I O board are on Check with voltmeter for 230 Vac across brown and blue wires on the Power Distribution board Power down main breaker and then reconnect cables Initial Power Up severe injury Do not open or remove covers when power is applied to the Generator If any panel cover or guard must be removed for an electrical WARNING adjustment or check extreme caution should be exercised to prevent personal injury Wear insulated gloves when access to energized components becomes necessary N Hazardous voltages are present throughout the system High voltage can cause To perform the initial power up Step Action 1 Apply power to the DirectRay Console UPS and DirectRay Controller CPU 2 Press the Generator power on button on DirectRay Console and verify after 60 seconds that Generator CPU is alive LEDs 3 After the DirectRay Controller self test wait until the green temperature readout displays on the monitor and
32. Place a circular level on top of the beam alignment tool and shim the alignment tool until it is level Figure 4 4 Beam Alignment Tool Step MC30_234 tif Action tA A Adjust Collimator shutters so that the edges of the light field roughly coincide with the rectangular outline on the Collimator tool Initiate exposure at approximately 60 kVp and 8 mAs Accept the image in DRIVEL Press Center to display the DirectRay Detector center lines Adjust the OTC transverse and longitudinal travel Repeat exposures until the images of the two beads overlap at the DirectRay Detector center Use DRIVEL to find the coordinates for relocating the central beam and the center of the Collimator test tool directly over the DirectRay Detector center center pixel Adjustments and Calibration 4 27 EPEX Omniflex IV System Service Manual Step Action 10 If the images of the two beads overlap the central beam is perpendicular to within 0 5 If the image of the larger bead intercepts the first circle the beam is about 1 5 away from perpendicular Refer to Figure 4 5 Note The top hole in the cylinder is slightly larger than the bottom one It is necessary to move the X ray tube head in a direction toward the larger spot to align with the smaller Figure 4 5 Central Beam Alignment Correct Alignment Within 5 Misaligned by 1 5 Misaligned by 3 DK20_069 cdr Step Action
33. Preview image s Confirm modem is operational g Check software firmware revision levels for equipment Compare with records refer to Appendix C update listing if required Check logfiles for any unusual error messages Page 1 of 2 EPEX Omniflex Semi Annual1 cdr 5 3 EPEX Omniflex IV System Service Manual Semi Annual Preventive Maintenance Checklist System cont Inspection Comments Check for dust in DirectRay Console Check DirectRay Console fan Check all connections and make sure they are secure gO Check the UPS Page 2 of 2 EPEX Omniflex Semi Annual 2 cdr Preventive Maintenance EPEX Omniflex IV System Service Manual Annual Preventive Maintenance Annual Preventive Maintenance Checklist System Inspection Comments L Open the Generator cabinet and examine the unit for any visible damage missing or loose ground connections oil leaks damaged cables and so on g Ensure that there are no obstructions blocking any of the ventilation holes or louvers on the Generator cabinet J Inspect ground handswitch operator contols control cables and strain reliefs for wear and pinching J Check U arm cable drape inspect for cable sheath wear pinching or excessive bending g Check sheathing on cables that exit the U arm and enter the ceiling for pinching cuts fraying or excessive bending Check tightness of a
34. Radiographic Service Manual For the Operator Console refer to the DirectRay Console Service Manual For software application reinstallion or upgrades refer to the DirectRay Console Service Manual 6 1 Chapter 7 Diagnostics and Troubleshooting This chapter describes the diagnostic and troubleshooting procedures for the EPEX Omniflex IV System Contents publech CE Troubleshooting Overview redeo eee tee du dead 7 2 Troubleshooting Service Tools eiie 7 3 Accessing Tall Dog FeS Geshe aer den REN ee Pease 7 7 Responding to Error Messages eeccessceeseceseceececeeeceeeseeeeeseeenaeenes 7 10 Troubleshooting System Problems eee 7 14 7 1 EPEX Omniflex IV System Service Manual Troubleshooting Overview 7 2 The System Controller initiates service diagnostics via the SCSI 2 interface Service diagnostics involves initiating power on tests and component self tests Errors are reported to a log file This chapter provides General information on error logs Recommendations for responding to error messages Troubleshooting guidelines e Reference information on error codes Diagnostics and Troubleshooting EPEX Omniflex IV System Service Manual Troubleshooting Service Tools Figure 7 1 DirectRay Console Task Launcher Netscape UNIX Toolbar Figure 7 2 UNIX Toolbar Window menu Calendar Text button Manager Editor When Service logs in
35. Repairability eese 5 1 In Service Observation eiie eei 5 2 Preventive Maintenance Schedules and Checklists 5 2 Semi Annual Preventive Maintenance eene 5 3 Annual Preventive Maintenance eese 5 5 System Preventive Maintenance i e see teras ears e esee eene n 5 6 Chapter 6 Repair and Replacement Contents vii EPEX Omniflex IV System Service Manual Chapter 7 Diagnostics and Troubleshooting Troubleshooting OVvervie W bip EUN 7 2 Troubleshooting Service 7 3 7 3 UNIX Toolb t sciensia resa e EE ae ede bese 7 3 Calculator SP 7 4 SCSI Error He UR 7 4 Error and Warning Reports osse ee eins 7 5 Accessing Tail Log Piles ise tee entro nece aee deo Rc ERE ode 7 7 Accessing Log Files in a Terminal Session sess 7 9 Additional Logs Accessible from a Terminal Session 7 9 DirectRay Controller Log Files Stored on the DirectRay Console 7 9 Responding to Error Messages essen 7 10 Troubleshooting System Problems eene 7 14 Appendix A EPEX Omniflex IV Specifications Subsystem Specifications seas deese sms ee aes A 2 DirectRay Image Capture 8
36. Tower Table Standard 7 Bucky wall outlet T EM 120 Vac 15 A 1 120 Vac 15 A 1 0 MC20_358 cdr System Earth Grounding Map The ground impedance from the central grounding point to any subsystem peripheral must not exceed 0 1 Ohms Figure 2 6 Grounding Map Collimator Video Display Tower CPI Generator Bucky Central Ground Bus MC20 359 cdr General Information 2 11 Collimator Figure 2 7 Collimator Attached to the OTC Figure 2 8 Collimator Control Panel 2 12 EPEX Omniflex IV System Service Manual The Collimator is attached to the OTC Refer to Figure 2 7 The Collimator control panel is shown in Figure 2 8 For further information on the Collimator refer to the Collimator and OTC service manuals that came with the system MC20_374 cdr MC10 201 eps General Information Omniflex IV System Service Manual Compatibility Certified Components This topic lists the components compatible with the EPEX Omniflex IV General Information System Component Model Number DirectRay Console Generator DirectRay Detector DirectRay Controller Ion Chamber X ray Tube Collimator
37. again Check the 3 phase fuses and voltages Check the rectifier output voltages Press RESET located in the radiography control group and try the exposure again 2 Check power input to the starter Check the Rotor_on and HV_lo signals to the starter Check the fuses and voltages Check the 3 phase fuses and voltages Check the rectifier output voltages Ensure mA and kV requested are reasonable Suspect miscalibration Verify mA stations Verify the Filament reading Diagnostics and Troubleshooting EPEX Omniflex IV System Service Manual Table 7 2 System Level Error Codes Error BO Bl B2 B3 B5 2B Error Type Sync Pulse Error No Digital Input Abort Exposure X ray Switch Jammed mAs Not Reached and Time was Stopped Portrait Landscape Position Fault Diagnostics and Troubleshooting Possible Cause Exposure request timed out Bucky contacts no closing No exposure taken No mAs Toolow mA Filament out of calibration Time exceeded 13046 of the expected mAs Recommended Action Press RESET located in the radiography control group and try the exposure again Exposure never started 2 Exposure not taken during 8 second time available 3 Time out flag Handswitch let off too soon Check the handswitch or wiring Press RESET located in the radiography control group and try the exposure again 2 Suspect mis
38. by the detector Possible view position for X ray exposure Impenetrable by light or X rays in the diagnostic quality range The basic software control system of the CPU The result of exposing an X ray image or person to an excessive amount of X rays Posterior Anterior view position for X ray exposure Picture Archiving and Communications System An electrical term used in setting X ray exposures The ability of X rays to pass through the material Discrete bundles of energy that travel at the speed of light Emission of visible light following excitation by laster light The Picture Archiving and Communications System is a set of software applications that enables hospital network users to enter review and print patient demographic and radiographic study information It contains archive and workstation hardware and requires a network connection Measurement of the detector elements from center to center The fundamental picture element of a digital image The long dimension parallel to the patient axis Toward the back or dorsal area of the body Refer to General Radiography A predefined collection of images views for X ray exposure A position of the body lying face down Nearer the point of attachment or origin Refers to the energy of the photons The number of photons in the beam Radiation Absorbed Dose Glossary RADEX Radiation Absorbed Dose RAD Radiation Oncology Radiation Therapy Radiog
39. dangerous exposure use movable lead screens lead impregnated gloves and lead impregnated aprons These protective devices must contain 0 25 millimeter thickness of lead or the equivalent Use such protective devices for all operators observers and or servicing personnel exposed to radiation fields of five or more milli Roentgens per hour The shielding provided for a typical X ray facility s operator workstation is generally quite effective and reduces the residual radiation from diagnostic X rays to a level that is comparable to or lower than natural background radiation If the operator abandons the protected environment of the workstation he or she may be exposed to a significantly higher level of radiation For a single exposure this may still not lead to serious health effects but repeated carelessness in this regard may lead to serious consequences Any object in the path of the primary beam produces scattered radiation In the absence of proper precautions scattered radiation can result in a substantial radiation dose to the operator or any other personnel in the facility Moveable screens may be used to shield occupied areas from scattered radiation The X ray Generator in the EPEX Omniflex IV System only produces X rays when high voltage is applied to the X ray tube When the high voltage is removed X ray emission ceases without delay Safety Information Omniflex IV System Service Manual Authorized EU Representat
40. highest frequency of interest or the highest frequency component in the signal Semiconductor material used in the DirectRay Detector to convert X ray energy directly into electricity Semiconductor material found in all TFT arrays Information representation scheme with continuous amplitudes Radiographic examination of the blood vascular system after the injection of an aqueous solution of contract medium The positively charged portion of a vacuum tube In the X ray tube the anode contains the target that is bombarded by electrons during X ray production The front portion of the body or of an organ or part Device used to prevent the radiation scattered within the patient from reaching the DirectRay Detector and fogging it Anterior Posterior view position for X ray exposure A computer database for storing images and patient demographic information The place of junction between two or more bones Also called a joint GL 1 Artifact s Attenuation Autoclave Automatic Exposure Control AEC Backscatter Rays Barium Baud Rate Bit Bucky Calibration Capacity Cassette CCD CE Mark Central Ray Charge Coupled Device CCD GL 2 EPEX Omniflex IV System Service Manual Foreign or artificial marks on a radiograph that may be caused by static dirty or damaged screens loose foreign bodies in the cassette and so on The reduction of the intensity of the X ray beam as it traverses matte
41. pdevprint_001 9 pdevremstore_001 10 itconvert 001 11 storagecommit 001 12 js 001 19 droc 001 14 reclaim 001 START Tail Log START More Log START Tail Log Start Tail Log Button Sleep 5 Skeep Steep Sleep Skeep Steep Sleep Skeep Steep KILL Task KILL Task START More Log Sleep MCOO 375 tif MC20 324 cdr 7 7 Table 7 1 Error Log Module Status Bar EPEX Omniflex IV System Service Manual Meaning 1 RMS Server prestart 001 msgserver 001 2 3 4 rados_001 5 mwlquery_001 6 pdevdr_001 7 xd_001 8 pdevprint_001 9 pdevremstore_001 10 itconvert 001 11 storagecommit 001 12 jss 001 13 droc 001 14 reclaim 001 7 8 Lists adds deletes the resources Cleanup utility creates then completes Holds adds deletes the alarms The database for patient demographics Service which interfaces between the DirectRay Console and the Modality Worklist provider Service which interfaces between the DirectRay Console and the DirectRay Controller over SCSI Service which shows the interface between the WAMI and the X ray Generator Service which interfaces the DirectRay Console to the DICOM printers Service which interfaces the DirectRay Console to the DICOM store devices Service which interfaces the DirectRay Console to the Inverse Topography function Service which interfaces between the DirectRay Console and archi
42. stet ttr eo nene 1 13 Radiographic Table Labels 1 14 5 RN 1 15 Dy desse ueniret aha sum meae aita sepe tas de iita 1 15 Manufacturer s Responsibility eese 1 16 Monitoring Personnel 1 16 Radiation Protection Survey EUR t que eade dn 1 17 Restrictions on SC Veces setate tit ea t e i ei at una niae atu aR 1 17 Chapter 2 General Information What Is the EPEX Omniflex IV System sese 2 2 Major System Compone mts RN RR 2 4 Overhead Tube Crane OTC Components 2 4 Radiographic Table Components eene 2 6 DirectRay Console Components eene 2 7 Generator COMponents ona ius loni aba ICI BURERN GE 2 9 Iter x 2 11 System Earth Grounding 2 11 a eum o ne a E 2 12 Compatibility Certified eene 2 13 Compatible Output DeviC6s oet eite nette edet dee Ea ene 2 14 Chapter 3 Installing the System Hardware OVEDVIEW AR 3 2 Staging the ome BAe Rais ecd ndi BA ae 3 2 Safety nequ Qa FN DEN DNI Rev Es 3 2 Personnel cuc ete e eitis 3 3 Tools and Other Equipment eese 3 3 Parts lo Be Returned 3 4 Contents EPEX Omniflex IV System Ser
43. the system for crosshair adjustments Verify at minimum and maximum VSID 4 32 Adjustments and Calibration EPEX Omniflex IV System Service Manual Aligning the HSID Central Beam and X ray Field Center to DirectRay Detector Center To align the HSID central beam Step Action 1 Position the X ray tube and Bucky to the maximum HISD A2 B2 or C2 2 Align the light field to the test tool 3 Verify the bead overlap in DRIVEL 4 If necessary adjust compromise positions A Transverse and vertical B Longitudinal and vertical C Telescope rotation and vertical transverse only if absolutely necessary 5 Verify the bead overlap at HSID Min A1 B1 or C1 and Max 6 If necessary adjust A B C Transverse and telescope vertical and tube angle last 7 Set detents and reverify VSID Min and Max Adjustments and Calibration 4 33 EPEX Omniflex IV System Service Manual Checking the Size of the X ray Field to Collimator Indicated Size Full Field To check the size of the X ray field to Collimator indicated size full field Step Action 1 ON A Q Set the Collimator indicated size to 43 x 35 cm at 100 cm SID using the Auto function Turn the Collimator to a 45 angle to the DirectRay Detector Note This is done so that you will be able to see a field size greater than the DirectRay Detector size Take an exposure at 70 and 8 mAs Accept the image View the image in DRIVEL
44. to the generator 6 Thread the wires from the key switch through the hole in the bottom of the collimator power supply box as in Figure 3 17 Figure 3 17 Inserting key switch wires into collimator power supply box 7 Using a small slotted screwdriver attach the two red wires from the keyswitch to the terminals to which the red wires are attached numbers 2 and 3 along the bottom row of terminals Remove the red wires that were previously attached there and tighten the terminal screws see Figure 3 18 Figure 3 18 Attaching the wires Installing the System Hardware 3 23 EPEX Omniflex IV System Service Manual 8 Attach the two black wires from the keyswitch to the terminals to which the black wires are attached numbers 4 and 5 along the second row of terminals Remove the black wires that were previously attached there and tighten the terminal screws 9 Wrap and tuck the loose wires as necessary to keep them from shorting any of the power supply components or interfering with the operation of the door 10 When the generator has been cabled appropriately see next section install the upper cover of the electronics box with a Phillips screwdriver and the screws P N 200 0029 provided 3 24 Installing the System Hardware EPEX Omniflex IV System Service Manual Cabling the EPEX Omniflex IV System A CAUTION A WARNING Installing the System Hardware For the electrical wiring connections for t
45. you to set the AEC parameters for each AEC channel The following is an example AEC setup screen Receptor Setup So defaults TEM DK00_005 tif Definition AEC Channel AEC Back Up mAs AEC Back Up ms AEC Back Up Mode 4 8 Defines which AEC channel used by the receptor This must be set to a valid channel or 0 as noted below For example if using an AEC board with only 3 input channels channels 1 to 3 then selecting AEC channel 4 will cause an error Selecting 0 disables AEC operation on that receptor The default setting is 1 Sets the maximum backup mAs to a limit of 500 mAs The default setting is 500 Sets the maximum backup ms The default setting is 800 Defines the AEC backup mode to be used FIXED The Generator will determine the maximum AEC backup time not to exceed preset AEC backup mAs ms values or system limits The characters AEC will be displayed in the time window of the LED display during AEC operation mAs Allows the operator to adjust the AEC backup mAs not to exceed preset AEC backup mAs ms values or system limits The mAs value will be displayed in the time window of the LED display during AEC operation ms Allows the operator to adjust the AEC backup ms not to exceed preset AEC backup mAs ms values or system limits The ms value will be displayed in the time window of the LED display during AEC operation The default setting is 1 Adjustments and Calibration Receptor
46. 00 mm 2230 mm 4370 x 2950 mm 1600 mm 432 mm 730 mm 2600 mm 360 with continuous locking capability and position detent every 90 115 with continuous locking capability and position detent every 90 By means of a spring Fine adjustment by means of counterweight plates From 37 to 46 kg 81 to 102 Ib 5 kg starting effort A 3 4 EPEX Omniflex IV System Service Manual Maximum Effort for Lateral lt 5 kg starting effort Movement Longitudinal Movement Brake Type Negative 24 Vdc Lateral Movement Brake Type Negative 24 Vdc Vertical Movement Brake Type Negative 24 Vdc Tube Arm Rotation Brake Type Negative 24 Vdc Tube Angulation Brake Type Negative 24 Vdc FFD Indication Type By means of a digital display FFD Indication Accuracy Tube Rotation Indication Type By means of a digital display Tube Rotation Indication Accuracy 1 EPEX Omniflex IV Specifications EPEX Omniflex IV System Service Manual Overhead Tube Crane Physical Specifications The outline of the Overhead Tube Crane is detailed in the following illustration Figure A 1 Overhead Tube Crane Outline 2064 81 26 E i ii SNESESESESENRREREN 7 1950 DISTANCE BETWEEN SCREW CENTERS 675 26 577 2990 117 71 CARICO MASSIMO GRAVANTE SU OGNI BULLONE 150 Kg MAXIMUM LOAD ON EACH SCREW 150 Kg EPEX Omniflex IV Specifications 700 27 5 300 27 5 EP
47. 1330 USA Toll Free 1 800 800 6006 www delmedical com Contents EPEX Omniflex IV System Service Manual Contents About This Manual Intended Ese 2 A tech ciate te sa estesa metu m d C dus xi agio uh ami tutte ase ates tactu DIN at oes xii OTTAVAN atO a xiii Conventions Used in This Manual eene xiv Chapter 1 Safety Information SA I EEE E E E te E A 1 2 siegt P 1 2 ton dca tad aula a idet aa E te A de 1 3 Safety Warnings and Cautions cceeccecesccecssececeeeceesseceeseeesteeeeeseeeee 1 3 General Use Warning S coss duae 1 3 Field Warnings e ere tree toe a a Veo EN veg ge 1 3 Electrical and Flammable Warnings eene 1 4 Moving and Using Equipment Warnings eee 1 5 Cleaning c sinite eee eet 1 5 Safety Symbols Ede E MESA EROR de Tae 1 6 Safety and ComplianCe cenas 1 8 Radiation Protection ius er nte ouai eed vede e soe odi qiero REIR 1 9 EPEX Omniflex IV System Service Manual Authorized EU Representatives c scccsssccscssscesssccscssccesssscsensteeseceeenaeces 1 11 IdentfiCationmd d3bels di tae did E same ce eke ea 1 12 Overhead Tube Crane label noeh 1 12 Generator cee Si eas 1 13 DirectRay Console Labels tete
48. 25 EPEX Omniflex IV System Service Manual Aligning the Test Tool to the DirectRay Detector Center 4 26 To align the test tool to the DirectRay Detector center Step Action 1 In portrait position the Bucky to table centerline with the Bucky tower carriage in the home position 2 Place the Collimator test tool in the approximate center of the Bucky 3 Set SID to 100 cm for fo 100 cm grids or 112 cm for fo 140 cm non focused grids 4 Adjust the Collimator shutters so that the edges of the light field roughly coincide with the rectangular outline on the Collimator tool 5 Initiate exposure at approximately 60 kVp and 8 mAs 6 Accept the image in the DR Image Viewer DRIVEL 7 Press Center to display DirectRay Detector center lines 8 Reposition the center of the Collimator test tool to be aligned with the DirectRay Detector center center pixel 9 Repeat this step until the Collimator test tool is centered with the DirectRay Detector center 10 Once the Collimator test tool is aligned with the DirectRay Detector center tape the Collimator test tool in place on the Bucky cover Adjustments and Calibration EPEX Omniflex IV System Service Manual Aligning VSID Central Beam to the DirectRay Detector Center To align the VSID central beam to the DirectRay Detector center Step Action 1 Place the beam alignment tool Plexiglas cylinder in the center of the Collimator tool Refer to Figure 4 4
49. 95 0231 Assembly Foot Switch 295 0232 Cover Left Side D 8 Field Replaceable Units Omniflex System Service Manual Part Units per Component Number Description Assembly Radiographic Table cont 295 0233 Cover Right Side 295 0234 Assembly Cam Follower 295 0235 Brake Assembly Long 295 0236 Bearing Cross Travel 295 0237 Brake Assembly Short 295 0238 Assembly Thrust Nut 295 0239 Cam Follower 295 0240 Bearing Ball 295 0241 Assembly Guide Plate 295 0242 Chain Roller 295 0243 Link Chain with Clip 295 0244 Fuse Slow Blow 5 Amp 295 0245 Control Motor 295 0246 Power Supply 24 V 295 0247 Sensor Proximity 295 0248 Transformer 590 0249 Switch Assembly 295 0250 Line Filter 295 0251 Motor 130 V 1 3 HP 010 1190 Assembly Carriage Brake 295 0682 Bumper Rubber 140 0107 Assy Control Dist PCB EPEX 140 0108 Assy Port Land PCB EPEX Interconnect Cables 180 0469 Cable Horizontal Brakes 180 0470 Cable Link amp Tower Rotary Joint 180 0471 Cable Vert Brake Arm Joint Ex 180 0472 Cable Tower Handle Cable Field Replaceable Units D 9 Omniflex System Service Manual Part Units per Component Number Description Assembly Interconnect Cables cont 180 0473 Cable Bucky Handle amp Arm 180 0474 Cable Bucky Rotation 180 0475 Cable Vert Brks Rotation Joint
50. 998 PMS Jan 1999 HPS Ver 1 1L Oct 1997 LNSS3_DCC_ 2 93 Ver 4 1 Comments Extension of Drystar Validation Complete Extension of Drystar Validation Complete In Progress In Progress Complete Complete Complete Complete General Information Chapter 3 Installing the System Hardware This chapter describes the basic installation of the EPEX Omniflex IV System Contents _ _ VVC Mer pc P 3 2 EPEX Omniflex IV System Installation Checklist 3 6 Unpacking Equipment e es 3 7 Positioning the Equipr ent etin eicu i eset epe ide deerat ite daba uae 3 0 EPEX Omniflex IV System Wiring Diagrams 3 11 Installing the DirectRay Console eee 3 11 Installing the iecit Gee 3 12 Starting the OTC Installation 2 ett tentata 3 18 Starting the Table Installation oio eee ot e ane 3 18 Finishing the OTC Installation 5 etti tertio t dete tte 3 19 Finishing the Table Installation eee 3 19 Assembling the Electronics Box on the Generator 3 20 Cabling the EPEX Omniflex IV System eee 3 25 Checks Power eic e dit asi 3 30 Checks After Power Jp i ins 3 33 Completing EPEX Omniflex IV System Installation
51. A and kV Review Filament circuit 1 Verify mA requested is within bounds 2 Review Filament circuit 3 Check plugs EPEX Omniflex IV System Service Manual Table 7 2 System Level Error Codes Error Error Type A9 Generator Lost Communication with X ray Control 1 Generator Not Resetting 2A 600 Power Out of Spec 3A V600 Power Too High 4A Boost Error 5 Reserved 6A AC 3 Phase Error TA V600 Power Too Low 9A Technique Out of Bounds 7 12 Possible Cause Fuse blown IGBT Shorted Bridge Rectifier Blown Check 500 V Rail Blown Bridge Rectifier e Lost one phase of 3 phase power Starter Problem Check Pin 9 and Pin 12 on Starter Board e Voltages on Com phase on Com main Check windings Check Detector Board Verify DC Rail IGBT Blown Check Inverters Calibration problem Recommended Action 1 A Verify that the HF Logic Board is properly seated Verify the baud rate between the HF Logic Board and the CPU Board Verify RS232 connection Verify X ray tube is plugged in securely Verify the countdown sequence from the X ray Generator HT cables are properly seated Check the 500 V Rail Part out of the HF Power Board Press RESET located in the radiography control group and try the exposure again Check the 3 phase fuses and voltages Press RESET located in the radiography control group and try the exposure
52. AUTION Adjustments and Calibration Whenever the AEC has been replaced the following procedure must be followed It is also possible that you may need to make adjustments after performing service particularly after replacing components or subassemblies Avoid damage to the X ray tube by carefully monitoring the tube housing temperature during testing To perform an AEC ion chamber adjustment Step Action 1 Remove the Grid 2 Set to Portrait mode and the SID to 72 in 3 Open the Collimator to 14 x 17 in 4 Ensure that there is nothing in the path of the X ray beam 5 Use the following settings 60 kV 25 mA 200 ms backup 6 Ensure that cell 2 the center cell is on For the numbering and layout of the cells refer to Figure 4 10 on page 4 52 7 Acquire an exposure 8 Record the milliseconds in the Verifying Ion Chamber Preamplifier Balance form in Appendix C A sample of the form is shown following this procedure 9 Select only cell 1 the left cell 10 Acquire an exposure 11 Record the milliseconds in the Verifying Ion Chamber Preamplifier Balance form in Appendix C A sample of the form is shown following this procedure 12 Adjust cell 1 s balance so that it equals cell 2 s ms 5 13 Select only cell 3 the right cell 14 Acquire an exposure 4 51 EPEX Omniflex IV System Service Manual Step Action 15 16 17 18 19 20 21 22 23 24 25 26 Figure 4 10 Re
53. Assembly Detent Solenoid 010 1274 Assembly Arm Rotation Switch 010 1297 Assy Rotary Detent Latch 010 1301 Assembly Tower Pulley 010 1303 Assy Rot Detent Latch Lower 010 1309 Assembly Detector Switch 030 2544 Cover Tower Top 030 2545 Cover Arm Bearing 030 2576 Cover Tower Pivot 030 2578 Cover Link Middle 030 2579 Cover Inner Pivot Front Field Replaceable Units D 7 Omniflex System Service Manual Part Units per Component Number Description Assembly Radiographic Table cont 030 2580 Cover Outer Pivot Front 030 2643 Actuator Bucky Switch 030 2646 Cover Tower Side Middle 030 2647 Cover Weight Cable Left 030 2648 Cover Weight Cable Right 030 2651 Cover Tower Vertical Carriage 030 2652 Cover Outer Pivot Rear 030 2656 Cover Inner Pivot Rear 030 2665 Cover Tower Side Top 030 2666 Cover Tower Side Bottom 030 2667 Cover Cable Bracket 030 2668 Cover Base Carriage 030 2669 Cover Tower Wire 030 2670 Cover Vertical Detent Right 030 2671 Cover Vertical Detent Left 030 2685 Keypad Tower Handle 030 2686 Keypad Detector Arm Handle 030 2687 Keypad Detector Handle 030 2802 Hose Tower Link 030 2803 Hose Tower Arm 030 2816 Cam Arm Rotation Switch 030 2847 Cap Base Plate Hardware Blue 295 0681 Plug Hole Guide Rail Mouting 295 0698 Cable Counterweight 295 0674 Table Radiography 2
54. B9 W6 1 180 0448 Cable Serial UPS Data W2 1 180 0449 Cable Serial W8 1 180 0450 Cable Serial Splitter 1 180 0451 Cable Sun 1 2 Meter 50 to 68 Pin SCSI 1 180 0452 Cable Ethernet Mod Plug Cat 5 Amp 1 180 0453 Ground Wire Panel 1 180 0454 Ground Wire UPS W13 1 465 0044 Switch Generator On White 1 465 0045 Switch Generator Off Grey 1 D 2 Field Replaceable Units Omniflex System Service Manual Part Units per Component Number Description Assembly DirectRay Console cont 010 1154 Service Kit Cable amp Keyboard 1 180 0459 Cable Video BNC 5 to VGA 1 330 0013 Fans 110 V 2 180 0456 Cord Power Supply UPS 1 100 0044 115 V UPS Oneac 1 120 0180 120 Modem US Robotics 33kbs 00839 0 1 120 0196 CPU Integrated Unix Ethernet 1 120 0190 Adapter Serial 1 120 0189 Cord Mouse Extension 1 120 0179 21 in Monitor 1 DirectRay Console 230 V 330 0014 Fan 220 V Whisper AC 2 100 0045 UPS Oneac 230 V 1 DirectRay Controller and 010 1253 DRAC Array Controller 1 DirectRay Detector 010 1252 Model 100 Medical Grade Array 1 Collimator 590 0528 EEPROM Linear IV 590 0529 CPU Board Assembly 590 0530 Driver Board Assembly 590 0531 Display Board Assembly 590 0532 Front Panel Touch Screen 590 0533 5 V Logic Switching Pwr Supply 590 0538 Linear Master Board Assy 590 0510 Swivel Mnt Ring Tube 590 0511 Swivel Mnt R
55. BLE CENTER LATERAL SWITCH CAM Ce 9 9 WALL SETUP BUCKY 7 CENTER SWITCH CAM 7 7 9L 7 e 9 TABLE CL C ay m zi E 9 e o 9 e e D 40 44 B SETUP SID CON B H 0 44 B SETUP SWITCH CAM 12 Br SETUP SID DETENT 72 SETUP SID SWITCH CAM DK20_138 cdr 3 14 Installing the System Hardware EPEX Omniflex IV System Service Manual Figure 3 8 Setup Detent C C SETUP DETENT AND SWITCH CAM POSITIONS TABLE CENTER LATERAL SWITCH CAM 407 44 B SETUP SID SWITCH CAM 72 C SETUP SID SWITCH CAM TABLE CENTER LATERAL DETENT DK20_139 cdr To wire the chest setup A B or C detent refer to the OTC and Collimator service manuals that came with the system for proper configuration of the A B or C detent SID setup To prepare the room for the installation Step Action 1 Review and thoroughly understand the final site planning drawing and the A B and C chest setup drawings before installing the equipment 2 Ensure that there is sufficient clearance between the equipment and the walls doors and so on 3 Upon reviewing the final site planning drawing and t
56. Calibration 4 45 EPEX Omniflex IV System Service Manual AEC kVp Compensation for Film Screen 2 To determine the AEC kVp compensation for Film Screen 2 Step Action 1 2 10 Connect the Service Laptop to the Generator From the GenWare Utility AEC Calibration Points menu screen choose Film screen 2 Adjust the reference volts as shown in the form below Acquire exposures using the following techniques 50 mA 250 ms backup time AEC cell 2 Film screen 2 Grid Speed 2 40 in HSID or VSID Collimator in auto mode 25 x 25 cm field size Grid in Use DRIVEL to acquire a DV Mean for image center as the ROI Ensure all DV Mean measured is within 200 of each other and respective to 65 kVp data point in the table Record the AEC mS DV Mean and the DV Mean delta in the AEC kVp Compensation for Film Screen 2 form found in Appendix C A sample is shown following this procedure Repeat steps 3 to 7 for each kVp listed on the form This is an iterative process to adjust the kVp to the reference level to bring the multiple high s and low s DV Mean closer to the DV Mean data point at 65 kVp Do not re adjust the 65 kVp reference volts The final exposure should have a Delta lt 200 to the acquired DV Mean at 65 kVp Repeat this procedure as an iteration Record only the adjusted reference and the resulting AEC ms DV Mean DV Mean delta in the AEC kVp Compensation for Film Screen 2 iterati
57. Console Service Manual e Configure the DirectRay Console application Refer to Chapter 5 in the DirectRay Console Service Manual Complete system acceptance Refer to the DirectRay System Acceptance Manual Complete final assembly Refer to the following procedure Final Assembly The final assembly consists of the following Step Action 1 OQ A QU N Bolt anchor Generator to the floor Verify all connections Replace all covers Clean all equipment Verify that the fan is operational Touch up paint where necessary Verify system configuration Installing the System Hardware 3 35 EPEX Omniflex IV System Service Manual 3 36 Installing the System Hardware Chapter 4 Adjustments and Calibration This chapter provides the procedures required to adjust and calibrate the EPEX Omniflex IV System Adjustments may be required to fine tune the system after the initial installation or if components have been replaced The calibration procedures assume that the system configuration setting for the X ray Generator were factory set so additional adjustments required will be minimal to calibrate the system Forms to record the calibration and site settings are provided in Appendix C Keep a copy of these records on site and send the originals back to the Installation Coordinator at Del Contents SUBE __ _ Connecting the Service 2 4 2 Setti
58. Contents EPEX Omniflex IV System Service Manual Checking the Size of the X ray Field to Collimator Indicated S126 PUP Biel eR 4 34 Checking the Size of the X ray Field to Collimator Indicated Size 4 34 Checking the Size of the X ray Field to Collimator Indicated Size Full Field at 180 GHI oreet tree tibt 4 35 Checking the Size of the X ray Field to Collimator Indicated Size dt CIE cutee ec rici Bee dee 4 36 Testing CalibEatlotio ode e 4 37 Calibrating the DirectRay Detector esee 4 38 Connecting Test Equipment 4 41 Connecting KV Meter Be 4 41 Connecting the mAs tte utpote 4 42 Adjusting Automatic Exposure Control AEC sess 4 43 P 4 43 AEC Limitations Minimum Response Time 4 43 AEC Limitations Maximum Exposure Times 4 44 AEG Board dio ccepit 4 44 Precalibration Notes eie tte diee d eet Ea Peri 4 45 AEC Preliminary Overall Gain Calibration 4 46 AEC kVp Compensation for Film Screen 2 esses 4 47 Adjusting the Final Ion Chamber Preamplifier Gain 4 50 Ion Chamber Detector Balance PreAmp 4 52 Chapter 5 Preventive Maintenance Serviceability and
59. D SWITCH CAM TABLE C L WALL SETUP BUCKY LATERAL s CENTER SWITCH CAM WALL A SETUP BUCKY LATERAL CENTER DETENT DK20_137 cdr Adjustments and Calibration 4 23 EPEX Omniflex IV System Service Manual Figure 4 2 Detents for Position B B SETUP DETENT AND SWITCH CAM POSITIONS TABLE CENTER LATERAL DETENT TABLE CENTER LATERAL SWITCH CAM e ry e e WALL SETUP BUCKY f CENTER SWITCH CAM j _ TABLE CU LI 3 e e 40 44 SETUP SID Am 0 4 SETUP SWITCH CAM e e Des e O eo 72 B SETUP SID DETENT 72 SETUP SID SWITCH CAM DK20 138 cdr 4 24 Adjustments and Calibration EPEX Omniflex IV System Service Manual Figure 4 3 Detents for Position C C SETUP DETENT AND SWITCH CAM POSITIONS TABLE CENTER LATERAL SWITCH CAM 40 44 B SETUP SID SWITCH CAM TABLE C L D m c 72 SETUP SID SWITCH CAM TABLE CENTER LATERAL DETENT Adjustments and Calibration DK20 139 cdr 4
60. Defaults Adjustments and Calibration EPEX Omniflex IV System Service Manual This selection is available only if Memory was set to DEF in the Receptor Setup menu 2 Parameter Definition Technique mAs Default Focus Large Default Density 0 Default Film Screen 1 Default Fields RCL Default Voltage kV 75 Default Current mA 200 Default Time ms 200 4 9 Configuration 4 10 EPEX Omniflex IV System Service Manual The I O Configuration menus allow programming of the states of exposure for the inputs and the outputs on the Room Interface board Gen Rad Input Menu Tab Standby Prep Ready Exp Remote Exposure Off Off Off On Remote Prep Off Off Off Off Rem Fluoro Exp Off Off Off Off Console Exposure Off Off Off On Console Prep Off On Off Off Tomo Exposure Off Off Off Off Remote Tomo Select Off Off Off Off LI Safety Off Off Off Off Collimator Interlock Off On Off On Bucky Contacts Off Off Off On Spare Off Off Off Off Thermal Switch 1 On On Off On Thermal Switch 2 Off Off Off Off Room Door Interlock Off On Off On if applicable Multiple Spot Exposure Off Off Off Off Adjustments and Calibration Adjustments and Calibration EPEX Omniflex IV System Service Manual The following is an example of the Inputs screen The set up outputs are described in the following table Output Menu Gen Rad Tab Standby Prep Ready Exp Fluoro Bucky 1 Off Off Off On N A Select Bucky 2 Off Off Off Off Off Sele
61. EPEX Omniflex IV System Service Manual Checks Before Power Up Check the incoming power line at the Generator for proper phase using the Phase Sequence tester Correct if necessary Tighten the screws securing incoming power to fuses Initial Voltage Measurements To perform the initial voltage measurements Step Action 1 Verify that the mains voltage and current capacity is correct for the Generator installation Refer to the product ID label on the Generator cabinet and Chapter 1 Section C of the CPI manual shipped with the unit Temporarily remove the safety cover over the main input fuses in the Generator If the mains supply is compatible with the Generator switch on the main breaker and or disconnect switch Note Do not switch the Generator on at this time only the ac mains to the Generator is to be switched on at this time Use extreme care in measuring these voltages Accidental contact with mains voltages may cause serious injury or death WARNING Mains voltage will be present inside the Generator cabinet even with the console switched off The bus capacitors located on the base of the power supply present a safety hazard for a minimum of 5 minutes after the power has been removed from the unit Check that these capacitors are discharged before touching any parts 3 30 Installing the System Hardware EPEX Omniflex IV System Service Manual Step Action 10 11 Verify that
62. EX Omniflex IV System Service Manual The tube coverage area is illustrated in the following drawing Figure A 2 Tube Coverage Area 51311221507 2064 81 26 mg 3000 118 11 2990 117 71 A 6 EPEX Omniflex IV Specifications DirectRay Console EPEX Omniflex IV Specifications EPEX Omniflex IV System Service Manual Weight Base Top Surface Clearance Weight Electrical 159 kg 350 Ib Width 71cm 28 in Depth 49cm 19 in Height 100 cm 39 in with monitor 150 cm 59 in without monitor Width 84cm 33 in Depth 56cm 22 in 30 cm 12 in minimum on both sides 75 cm 30 in minimum in front 125 kg 275 Ib without monitor 156 kg 350 Ib with monitor US 115 Vac 50 60 Hz 5 A Europe 220 Vac 50 60 Hz 3 A A 7 EPEX Omniflex IV System Service Manual X ray Generator Cabinet Weight 159 kg 350 Ib Cabinet Width 46 cm 18 in Dimensions Depth 41 cm 16 in Height 145 cm 57 in Output 80 kV high frequency 100 mA 80 800 mA 100 kVP 500 mA 150 40 to 150 kVP 0 5 to 1000 mA Line Voltage 10 Range High Voltage 4 100 typical Ripple Other Features Dual speed starter APR and AEC programmable by operator Two and three point manual techniques Manual APR AEC override 380 440 480 Vac 3 phase A 8 EPEX Omniflex IV Specifications X ray Generator Physi EPEX Omniflex
63. Figure 4 7 kV Meter Connection XRAY BEAM FILTER CHAMBER SQUARE ROD IS HOLDER IN CENTER HOL 96035B ION CHAMBER CABLE CLIP HOLDER CABLE BASE 35080 80A MCOG 225r 4 40 Adjustments and Calibration EPEX Omniflex IV System Service Manual To connect the meter Step Action 1 uU tA A Q N Place the kVp divider and stand on the Bucky Install the filter pack in the kVp divider Install the ion chamber in ion chamber holder Connect the cable to the ion chamber and the kVp divider Connect the other end of the cable to the dose meter Connect the dose meter to the laptop Take the measurements To uninstall reverse steps 1 to 6 Connecting the mAs Meter To connect the mAs meter Step Action Turn the Generator power off Remove the mA test jack jumper that is located on the top of the high voltage tank Connect the mA meter to the mA test jacks Refer to the mA meter s operator manual for measurement setup Turn on the Generator power Make exposures Measure the mA Turn the Generator power off Disconnect the mA meter Replace the mA text jack jumper Adjustments and Calibration 4 41 EPEX Omniflex IV System Service Manual Adjusting Automatic Exposure Control AEC Introduction This topic covers interfacing and calibration of the AEC AEC Limitations Minimum Response Time Figure 4 8 Relative Timing
64. Generator 3 26 X ray Tube Housing Ground 5 56 ete aen IIR NEA 3 26 Wiring the Generator Cabinet Ground sss 3 27 Generator Lockout S WItCB so ace ede erro reet aetate dus 3 27 Safety Inter OU Ks 25e cute pe ttd iut thi Cette e RE Dnus 3 27 Cable the X ray Room Warning Light for Power 3 28 5 E 3 29 Verify Protective Earth Ground a eed pite ted cedes 3 29 Checks Beltore Power etd tra eh aede d ge Sues 3 30 Initial Voltage Measurements eee nee 3 30 Checks After Power Up ttr emn NAE 3 33 Initial Power oy a ede E dados ec MU RES 3 33 Verify Room Warning Light eese 3 34 Completing the EPEX Omniflex IV System Installation 3 35 Contents V EPEX Omniflex IV System Service Manual Binal Assembly 3 35 Chapter 4 Adjustments and Calibration Connecting Service Laptop ssoisteasoniee V Het en tos eia Qe nM 4 2 Installing the GenWare Console Program eese 4 2 Starting Gen Ware Console as cs prend e ROMs abe di tu adus 4 2 Setting the Communications Link eee 4 2 Setting the Generator UBTIUes se ee ve e eto eodera ie hice 4 3 Utility Men E 4 3 Setting Time and qe cda pi atender e
65. High Voltage Transformer Assembly outside U S only Seismic Anchoring if applicable Rails and OTC Installation Install the Longitudinal Rails Install the Lateral Rails Install the Brakes Install the OTC Install the X ray Tube oooooado Install the Collimator Oooodooood sa Installing the Table Qa Qa Qa Place the table Drill the Holes Secure the Table Assemble the Tower Install the Detector Array Cable to the Generator Electrical and Communication Lines Q Q Q Q Q Veri Sys Power Source to Generator X ray Room Warning Light X ray Room Door Interlock X ray Tube Anode and Cathode Cables Operator Console Communication Connections y Alignment em Calibration Establish X ray Light Field Coverage Network Connections Veri Sys App Sys y Modem Connection em Configuration lication Configuration em Acceptance Testing Return Templates and Caster Bars to Hologic EPEX Omniflex System Checklist cdr Installing the System Hardware EPEX Omniflex IV System Service Manual Unpacking the Equipment The equipment was carefully inspected and tested prior to shipment Upon its arrival inspect each container for damage Unpack each component as soon as possible and conduct a thorough examination of the components Do this in the presence of the carrier if at all possible If damage is noted take photographs of the damaged portions and immediately file a claim
66. IV System Service Manual cal Specifications The outline of the X ray Generator is detailed in the following illustration Figure A 3 Generator Outline 18 2 463 ANCHORING PLATES 4 PLACES 18 457 11 8 300 48 7 1237 36 915 EPEX Omniflex IV Specifications THE SHADED AREAS MARKED REPRESENT OPTIONAL WIRING CHANNELS REFER TO CHAPTER 2 THE SECTION REMOVING THE EXTERNAL COVERS FOR FURTHER DETAILS RIGHT SIDE REAR EPEX Omniflex IV System Service Manual Nominal Voltage Anode Speed Anode Heat Storage Capacity Focal Spots Anode Material Target Diameter Maximum Anode Cooling Rate Target Angle Filament Operating Range Maximum for Short Period Maximum Inherent Filtration 150 kVp 3000 9000 rpm 400 kHu 6 and 1 2 RTM 101 6 mm 2 kHu sec 12 35 4 1 to 12 2 V 6 0 to 17 4 V 3 0 to 5 5 A 3 0to 5 5 A 1 0 mm of Al EPEX Omniflex IV Specifications EPEX Omniflex IV System Service Manual Radiographic Table Table Weight Table Dimensions Table Capacity Table Top Travel Rotation Electrical Room Requirements Door Size Floor Strength EPEX Omniflex IV Specifications 403 kg 895 Ib Length 213 cm 84 in Width 94 cm 37 in Height Variable 203 kg 450 Ib weight capacity 50 cm 20 in longitudinal 13 cm 5 in transverse 26 cm 10 in vertical top travel Bucky portrait landscape pivot 90 Bucky arm rotation
67. Interface Board 1 OEM 00008 Dual Speed Starter 1 OEM 00009 FA HV O T 1 OEM 00010 PWBA DSS 1 OEM 00011 PWBA Generator CPU 16 Bit 1 OEM 00012 PWBA Room I F 1 OEM 00013 PWBA Digital I O DRC 1 OEM 00014 PWBA Auxilliary 1 00015 Resonant Assembly 1 OEM 00016 PWBA CTL 80 KW RF 1 00017 PWBA Inverter R amp F 1 OEM 00020 PWBA Filament Supply 1 OEM 00021 PWBA P I 1 OEM 00022 KIT DAP IT W O BRKT 1 Overhead Tube Crane 590 0478 Tubestand Controller PS PCB OTC 590 0479 Tubestand Controller I F PCB 590 0480 Univ Tubestand Lock Ctrl PCB 590 048 1 Servo Control PCB 590 0482 Interface PCB D 6 Field Replaceable Units Omniflex System Service Manual Part Units per Component Number Description Assembly Overhead Tube Crane 590 0483 Display PCB with S 9906 S w OTC cont 590 0484 Display PCB with S 9907 S w 590 0468 CAM Follower 1 2 Inch Dia 590 0469 Limit Switch 590 0470 Rotational Potentiometer Assy 590 0471 Rotational Potentiometer Cable 590 0472 SID Potentiometer Cable Assy 590 0473 Vertical Drive Motor 590 0474 Chain 1 4 25 Single Drv Mtr 590 0475 Clutch Brushless DC 590 0476 Vertical Drive Mtr Amplifier 590 0477 Vertical Drive Mtr Gear Head 590 0485 Front Panel 590 0486 Switch All Locks 590 0487 Large Magnetic Lock Radiographic Table 010 1184 Assembly Tower Encoder 010 1250
68. Kilovolt kVp GL 6 EPEX Omniflex IV System Service Manual Device on the Rotating Arm that measures its position Antiscatter Grid The ratio between the height of the lead strips and the distance between them Graphical User Interface Printed representations of images or text Standard that defines the format for interchange of text files between health care databases A standard interface between Hospital Information Systems HIS Method for describing the amount of energy produced by and X ray tube Ability to image small objects having high subject contract and spatial resolution Hospital Information System In a hospital the computer system that tracks patient demographic information visit information and other patient records Non desirable qualities on a printed image Used to amplify a fluoroscopic image to reduce patient dose Image capture systems that involve light in the image capture process The Operator Console integrated with the Generator controls X ray exposure and image capture When X rays strike these visible light is emitted The intensity of the beam is the product of the number and energy of the photons striking a unit of area per unit of time The relationship that exists between the intensity of radiation striking the detector and the distance of the detector from the X ray tube The type of phototimer or automatic exposure control device used The type of phototimer or automatic
69. Level Error Codes Error A3 A4 AS A6 A7 A8 Diagnostics and Troubleshooting Error Type Bucky Fault Reserved Communication Fault kV Error Filament Error mA Overload Error Possible Cause Drive motor not moving Communication fault between the DirectRay Console and the Generator Tube arcing Handswitch prematurely released mA problems Filament temperature too high Overcurrent Tube arcing Open circuit no Filament Cable problem Cathode fault from IGBT drivers Bad plug mA out of bounds for exposure Filament circuit fault EPEX Omniflex IV System Service Manual Recommended Action 1 Verify U arm J1 connector has power 2 Deselect Bucky and press RESET located in the radiography control group 3 Check the Bucky Enable and Bucky Return signals 4 Verify J1 12 and J1 13 close in Bucky 5 Verify Generator Panel N1 14 12 and 13 have signals 6 Verify System Controller Motherboard J20 1 has signal and goes to 8 V gnd Verify J20 2 and J39 22 have signals 7 Verify Generator Panel 1 J1 22 has signal 8 Verify WAMI J1 22 has signal Released handswitch too early 2 Check the prep expose ready signals going to the Generator and the prep ready and ready signals from the Generator 1 Suspect miscalibration 2 Check the kV feedback on the HF Power Board 3 Scope hV transformer check waveform 4 Verify TP2 and TP3 for m
70. Screwholding Phillips type e Screwdriver Screwholding Slot type e Screwdriver Slot Large 5 16 in e Seizers Hemostat Straight 5 in e Solder Pocket Pak e Soldering Iron Professional 25 watt Spring Hook Tool Combination e Stripper Wire 16 to 26 AWG Stripper Wire 22 to 31 AWG Tape Electrical 1 Roll Tester Modem Telephone Tweezers Reverse Action Wrench Adjustable 4 in Wrench Adjustable 8 in Wrench Set Open End Miniature 7 32 to 7 16 in Square Carpenter s Steel Set Machine Screw Size e Wrench Set Allen Inch e Fish Tape 6 ft Step Ladder e Plumb Bob Chalk Line e Torpedo Level e Lable Making Device B 4 Recommended Tools Recommended Tools EPEX Omniflex IV System Service Manual Wire Labels e 10 to 12 Gauge e 10 to 16 Gauge e 6 to 10 Gauge e 10 to 16 Gauge Wrench Set Standard And Metric Socket Set Standard And Metric Soldering Kit Digital Volt Meter Lead Set For Dvm 50 ft Extension Cord Recipricating Saw Tap And Die Set Level Bubble Level Framing Square Job Box And Casters Type H3 Hand Held Vibrating Reed Tach W 2 Rows 61 Reeds Each Hand Drill Battery Powered Phase Checker Torque Wrench Heavy Duty Work Gloves Crowbar Lockout Tagout Set Electronic Safety Dustpan Hand Sweeper Punch Set Center Drive Pin Retaining Ring Pliers External 2 75 in Pin Puller Pusher Safety Goggles Cable Ties Zip Ties EPEX Co
71. Tube Crane Radiographic Table X ray Generator and DirectRay Console WARNING The DirectRay Console cabinet includes a dedicated bolted protective ground connection to the building s electrical system Do not remove the grounding connection for any reason If it becomes damaged contact a qualified Service WARNING v Engineer gt The UPS battery must be replaced by an authorized Del representative The UPS battery contains lead and poses a hazard to the environment and human health if not disposed of properly gt WARNING The EPEX Omniflex IV System is not suitable for operation in the presence of a flammable anesthetic mixture with air oxygen or nitrous oxide gt WARNING 1 4 Safety Information Omniflex IV System Service Manual Moving and Using Equipment Warnings WARNING gt WARNING gt WARNING Cleaning Cautions gt CAUTION gt CAUTION gt CAUTION Safety Information Use at least two qualified people when moving equipment in order to prevent injury or strain The equipment is fragile and must be handled with care Excessive use of the keyboard and mouse or trackball may result in repetitive strain injury Do not spray cleaning solution directly onto the equipment Instead moisten a cloth with the solution and wipe the equipment Do not immerse the equipment including any components or accessories in liquid Do not autoclave the equipmen
72. ace from the Generator to the room equipment should be cut to the correct length if possible Excess lengths of cables may contribute to EMI RFI problems and as such should be avoided If it is not possible to trim the cables to the correct length for the installation HT cables and console cable for example try to minimize the area inside any loops of the excess cables as these loops are in effect an antenna Keep this excess cabling away from sensitive electronic equipment Excess cabling must never be bundled up and stored inside the Generator Review the installation at this time to ensure compliance to this requirement Installing the System Hardware EPEX Omniflex IV System Service Manual Verify Protective Earth Ground The protective earth ground test is conducted to confirm the integrity of the protective earth ground safety ground connections This test is conducted pursuant to IEC 601 1 standards and must be performed at installation A current of 25 A 50 or 60 Hz is applied to any surface accessible to the operator or patient for at least five seconds The no load voltage may not exceed 6 V Refer to Figure 3 21 Measure the voltage between the point of contact and the protective earth ground The resultant voltage may not exceed 2 5 Vac Figure 3 21 Protective Earth Ground Test Equipment Configuration 25 Amperes Protective Earth Ground C781 293 S Installing the System Hardware 3 29
73. adiation used in radiologic procedures this factor is equal to one so the REM is equivalent to the RAD Radiological Society of North America Term used to describe the computerized images pictures generated by CT MRI ultrasound and nuclear medicine studies These might be referred to as a CT scan MR scan thyroid scan bone scan and so on Silicon Controlled Relay Small Computer System Interface Factors that describe the quality of a finished radiograph density contrast detail and distortion The ability of the imaging system to record sharply defined margins or abrupt edges An unsharp edge may be easily seen if contrast is high but a sharp edge may be poorly visible if contrast is low Name of the clearance needed to sell in Japan Source to Image Distance The ratio of the peak amplitude of the signal to the rms value of the noise The image output when displayed on monitors or workstations Radiographic technique that demonstrates anatomical details of soft tissue Sun Microsystems commercial version of the UNIX operating system The distance from the source of the X rays to the detector Property of distinguishing two equal sized adjacent objects in the same place Refers to the number of pixels in a specified area Glossary Staging Area Sterotactic Study Supine Technique Technique Factor Technologist TFT Thoracic Three phase Generators Tiling Tomography Trabecular
74. allation Tools and Other Equipment I Installing the System Hardware Before starting the installation ensure that you have the proper equipment to do the job Hammers A heavy hammer such as a 32 oz ball peen Use this with a block of wood to adjust rails and end caps You can also use a heavy plastic or rubber mallet Pliers An assortment of pliers and cutters Power tools Hammer drill power hand drill Screw drivers Varied flat blade and Phillips head drivers Wrenches Assorted English and metric box and opened wrenches Prying tools You may need various prying bars to remove the equipment from the crates Hand tools You may need a hand saw or equivalent to remove the equipment from the crates Measuring tools You need a 25 ft tape rule and a micrometer Allen wrenches You need a varied assortment of Allen wrenches including keys and T handles in English and metric sizes Leveling device Digital levels various lengths plumb bobs chalk lines and or laser alignment devices Clamps You may want to use clamps to secure various movable parts on the system if there is no power to activate the brakes Lifting device Minimum 650 Ib capacity minimum 10 ft vertical travel pallet jack 3 3 EPEX Omniflex IV System Service Manual Parts To Be Returned to Del Room Preparation 3 4 WARNING gt WARNING gt WARNING gt WARNING g
75. apter 2 General Information This chapter provides general information about the EPEX Omniflex IV System Contents Subject Page What Is the EPEX Omniflex IV 2 2 Major System CORIDOTIOBIS iode either on eia ipud 2 4 Compatibility Certified Components esee 2 13 Compatible Output 1 2 14 2 1 Omniflex IV System Service Manual What Is the EPEX Omniflex IV System 2 2 The EPEX Omniflex IV System is a direct to digital fully integrated imaging system for general purpose outpatient radiology The EPEX Omniflex IV System utilizes a single digital detector to perform most general radiography procedures The DirectRay technology directly captures and converts X ray energy into a digital image The system acquires and transmits image data for hardcopy soft display or storage via Ethernet using DICOM protocols Typical radiographic assessment protocols for general radiography include views of the spine chest abdomen skull and orthopedic skeletal extremity examinations The versatility of the radiographic system operation provides for the following quickly and efficiently e Accessing and or entering of patient demographics e Accurate flexible and unencumbered alignment of the diagnostic source to both the anatomy of interest and the image receptor for any required radiographic projection of bot
76. ately one every 15 seconds Restart the auto calibration sequence and allow the auto calibration sequence to complete Season the tube at 130 kV by taking approximately 5 exposures of 100 mA and 50 ms These exposures should be taken at the rate of approximately one every 15 seconds Repeat step 8 at 140 kV and then at 145 kV Allow the tube to cool down for approximately 15 minutes before taking more exposures EPEX Omniflex IV System Service Manual X ray Tube Warm Up Before subjecting any X ray tube to radiographic kVp or mA loading the tube must be warmed up to prevent possible arcing Operating the tube at low mA and gradually increasing the kV seasons the tube and might reveal a faulty X ray tube high tension cable Note This procedure can be skipped if the tube conditioning or seasoning has taken place within two hours if the heat unit display is 0 or the system has not been used recently CAUTION To prevent damage to the X ray tube ensure the tube is warmed to 7 to 9 heat units prior to use Perform the tube warm up procedure from the application software screen see the Operator Console Service Manual or User s Guide for exact details and images of the software screen X ray Tube Calibration Procedure Note Should an error occur during auto calibration an error message displays The Generator limits the tube s operation to the range in which it was calibrated thus allowing for partial operat
77. bration Auto mode Vertical Speed Adjustment Lower Travel Limit Adjustment Table Mode Tracking Calibration Upper Travel Limit Adjustment X ray Tube Bucky Height Differential Reading Calibration Collimator Differential Vertical SID Adjustment SID Display Calibration Central Beam and X ray to Light Field Adjustments Adjustments and Calibration The following adjustments and calibrations must be performed to ensure functionality and conformance with 21CFR These procedures should be considered one complete test It is not recommended that adjustments be made without completing this test in the order it is presented The following procedures are included in the test Mechanical Checks before Beam Alignment Aligning the Test Tool to DirectRay Detector Center Aligning VSID Central Beam to DirectRay Detector Center Verifying VSID X ray Field Centered to DirectRay Detector Center Aligning the Collimator Light Field to X ray Field Aligning the Collimator Crosshair to X ray Field Aligning HSID Central Beam and X ray Field Center to DirectRay Detector Center Adjusting the Collimator Blades 4 21 EPEX Omniflex IV System Service Manual Mechanical Checks Before Beam Alignment To perform the mechanical checks Step Action 1 Determine which detent position A B or C setup is going to be used for the system Refer to Figure 4 1 on page 4 23 Figure 4 2 on page 4 24 and Figure 4 3 on page 4 25 Note Actual det
78. calibration Verify Collimator is On 7 13 EPEX Omniflex IV System Service Manual Troubleshooting System Problems Symptoms of system problems probable causes and recommended actions are detailed in Table 7 3 Table 7 3 Troubleshooting System Problems Symptom Possible Cause s Recommended Action X ray Generator Start Up Check DSI light on Generator Transformer Parure Verify 24 Circuit available to DirectRay Console Verify relay K1 is available to the LVLE circuit Ensure K2 relay on Remote ON OFF Board energizes e Verify K5 relay energizes X ray Generator Refer to the X ray Generator service manual POST Failure DirectRay Console Devices could be hung Verify via DirectRay Console Tasklauncher that all device POST Failure listings are successfully loaded Start TailLog on suspected error device DirectRay Controller Devices could be hung Enter Ctrl D at service keyboard enter password to access Boot Failure DirectRay Controller Service menu display with Sequencer in standby Monitor POST routine and check for errors Verify initialization of RAM Test passed Verify HV Control Voltage Test the Erase Circuit Can be Turned ON OFF e Run Initialization Read Out Sequence and check for Gate Failure Check if reset Due to Watchdog timeout Monitor DirectRay Detector internal Temp not to exceed Maximum Threshold e Verify integrity of Load Gain Cal Map Ensure not load
79. chive Wrkst Store Macintosh In Progress Cemax Icon Kodak Archive Archiv Store SW Ver 3 5 0 Complete Cemax Icon NT Doc 171 0016 00 Mar 1999 Kodak Wrkst Store Windows Complete Cemax Icon NT Siemens Magic Archiv Store In Progress Store Siemens Magic Wrkst Store VB32A Rev 3 0 Complete View Aug 1999 Sterling iiSys PACs Store ISG ISG 1998 00352 Complete now Agfa Rev 1 1 Mar 1998 General Information 2 15 Table 2 2 Printers EPEX Omniflex IV System Service Manual Manufacturer Agfa Agfa Agfa Fuji Kodak Kodak Kodak Imation Sterling now Agfa Sterling now Agfa Sterling now Agfa 2 16 Model 5200 Drystar 3000 LR3300 FM DP L 1120 2180 Dryview Contact 400 Digital 400 LP 400 300 Type Printer Printer Printer Printer Printer Printer Printer Printer Printer Printer DICOM Service Print Print Print Print Print Print Print Print Print Print Interface MG 3000 MG 3000 internal MG 3000 Fuji Network Print Server DICOM Print Server 9410 DICOM Print Server 9410 PACs Link 99410 Acq Sys Internal Helios Print Server DPS LINX Gateway Conformance Version PMS Ver 3 31 Jul 1999 PMS Ver 3 31 Jul 1999 PMS Ver 3 31 Jul 1999 FN PSS551 Oct 1999 3rd Edition 2E0383 Rev D SW V 3 1 Feb 2000 2E0383 Rev D SW V 3 1 Feb 2000 96 0000 4147 3 V1 0 Jul 1
80. chniques used on that receptor The techniques default to the last used on the previous receptor DEF The techniques used for that receptor are programmed Refer to Receptor Setup menu 4 and 5 Sets the time that the rotor will continue spinning after a fluoro exposure has terminated Sets the time that the rotor will continue spinning after a rad exposure has terminated Sets the time that the exposure will continue after the fluoro footswitch has been released This enables a frame store device to complete the last image Adjustments and Calibration Adjustments and Calibration EPEX Omniflex IV System Service Manual Term Definition Interface Opts Tube Receptor Sym Selects pre defined interface options 0 None 1 InfiMed digital 2 ATS ESI digital 3 Gilardoni digital pulsed RAD 4 Gilardoni digital HCF 5 Not assigned at this time Selects the tube assigned to that receptor Allows one of six receptor symbols sym to be associated with the selected receptor Symbol 7 is blank and may be used for an auxiliary device It is recommended that the Image Receptor Programming be backed up on the GenWare software Access the utility section and request the Generator Installation report A copy of the report must be sent to the Installation Coordinator and an additional copy printed and filed on site 4 7 AEC Setup Parameter EPEX Omniflex IV System Service Manual The AEC Setup menu allows
81. connection may result in intermittent operation and or exposure errors Wiring the Generator Cabinet Ground To wire the cabinet ground Refer to the generator service manual for specific instructions on wiring the cabinet ground 3 26 Installing the System Hardware EPEX Omniflex IV System Service Manual Generator Lockout Switch Figure 3 19 Location of Lockout Switch and Local ON OFF Switches Safety Interlocks A safety lockout switch S3 is provided on the Generator interface board When this switch is in the LOCKOUT position the Generator cannot be switched on either from the console or from the adjacent service switch S2 on the Generator interface board This prevents inadvertently switching on the Generator while it is being serviced S3 the Generator lockout switch must be in the NORMAL position to enable switching the Generator on For these switch locations refer to Figure 3 19 i T D 0 Do O0000 p TEE EEERSE Lock HICH 7 7 BE m S our 05 NORMAL g 3
82. contains service information for the Del EPEX Omniflex IV System It includes an overall description of how the system operates and provides detailed service support procedures such as repair and replace troubleshooting validation and calibration This manual is intended to service the EPEX Omniflex IV System consisting of the following components e DirectRay Detector and DirectRay Controller e Overhead Tube Crane e DirectRay Console e X ray Generator e Radiographic Table The EPEX Omniflex IV System is an assembly of components for the controlled production of diagnostic images with X rays It includes the X ray Generator the DirectRay Console the Collimator as the beam limiting device and the DirectRay Detector as the image receptor Digital images can then be viewed stored or printed The system provides a digital image capture capability for conventional radiographic examinations excluding fluoroscopy angiography and mammography The system then transmits image data for hardcopy soft display or storage via Ethernet using the Digital Imaging and Communication in Medicine DICOM 3 0 protocol xi Audience xii EPEX Omniflex IV System Service Manual This manual is intended for service engineers who have fulfilled the following training prerequisites or have equivalent experience e EPEX Omniflex IV System e Radiation safety e Electronics including troubleshooting skills e X ray theory e X ray Generator sys
83. cord the milliseconds in the Verifying lon Chamber Preamplifier Balance form in Appendix C A sample of the form is shown following this procedure Adjust cell 3 s balance so that it equals cell 2 s ms 5 If there are 5 ion chambers Set the Bucky to Landscape orientation Select only cell 5 the right cell refer to Figure 4 10 Acquire an exposure Record the milliseconds in the Verifying lon Chamber Preamplifier Balance form in Appendix C A sample of the form is shown following this procedure Adjust cell 5 s balance so that it equals cell 2 s ms 5 Set the Bucky to Portrait orientation and set the Inverted image setting Select only cell 4 the left cell refer to Figure 4 10 Acquire an exposure Record the milliseconds in the Verifying Ion Chamber Preamplifier Balance form in Appendix C A sample of the form is shown following this procedure Adjust the 4 balance so that it equals cell 2 s ms 5 Adjusting lon Chambers 1 3 2 8 2 4 52 9 DK20_061 cdr Adjustments and Calibration EPEX Omniflex IV System Service Manual M Adjustments and Calibration Verifying lon Chamber Preamplifier Balance Setup Grid Speed medium kVp 60 mA 25 Phantom Oin Field Size auto Balance Data Portrait AEC Detector s 1 2 3 Detector Selected Lt Ctr Rt Exposure ms Landscape Portrait Inverted
84. ct Bucky 3 Off Off Off Off Off Select Tomo Bucky 4 Off Off Off Off Off Select Spare Off Off Off Off Off Tomo Bucky Off Off Off Off Off Start ALE Off Off Off Off Off Collimator Off Off Off Off Off Bypass Room Light Off On On On Off EPEX Omniflex IV System Service Manual The following is an example of the Outputs screen Receptor Setup EE IEEE TEE The grey stripes mean that the function is not enabled inactive The red stripes mean that the function is enabled active DKO0_008 tif The arrow in the lower middle area points to one of the five states described below Moving to the next state is accomplished by pressing the State button The states are described in the following table State Description STANDBY Sets state of the I O when the Generator is in standby or idle mode Standby mode also defines the state when the Generator is in fluoroscopic hangover PREP Sets state of the I O when the Generator first enters PREP mode GEN RDY Sets state of the I O when the Generator has completed PREP mode and is ready to expose RAD EXP Sets state of the I O when the Generator starts a radiographic exposure FLUORO EXP Sets state of the I O when the Generator starts a fluoroscopic exposure Adjustments and Calibration EPEX Omniflex IV System Service Manual AEC Density Calibration Verify density settings using the GenWare software If the values are incorrect reenter the correct values i
85. dividuals authorized to use the equipment are aware of the danger of excessive exposure to X radiation This equipment is sold with the understanding that the manufacturer its agents and representatives do not accept any responsibility for overexposure of patients or personnel to X radiation Furthermore the manufacturer does not accept any responsibility for overexposure of patients or personnel to X radiation generated by the equipment used in conjunction with the EPEX Omniflex System components as a result of poor operating techniques or procedures No responsibility is assumed for any unit that has not been serviced and maintained in accordance with the technical service manual or which has been modified or tampered with in any way Monitoring Personnel Monitoring personnel to determine the amount of radiation to which they have been exposed provides a valuable cross check to determine whether or not safety measures are adequate This cross check may reveal inadequate or improper radiation protection practices and or serious radiation exposure situations The most effective method of determining whether the existing protective measures are adequate is the use of instruments to measure the exposure in rads This measurement should be taken at all locations where the operator or any portion of the operator s body may be inadequately shielded during exposure Exposure must never exceed the accepted tolerable dose 1 16 Sa
86. dropdb Rados Process is detailed in the DirectRay Console Service Manual If Collimator field size does adjust to panel orientation verify Collimator connections Verify panel orientation Verify manual collimation at U arm console Verify Collimator light functional Rotate the DirectRay Detector for recal Verify proper orientation Refer to Chapter 10 in the DirectRay Console Service Manual Ensure setup outputs are properly selected Details are in Chapter 4 in the DirectRay Console Service Manual A D Conversion not correct Tower not making adjustment Diagnostics and Troubleshooting Appendix EPEX Omniflex IV Specifications This appendix details the EPEX Omniflex System specifications Contents _ _ _ _ _ ur Ua bae Pd NUES A 2 EnfVIFODTIeDt s ssi top eiie RU A 12 Installation Requirements 12 1 EPEX Omniflex IV System Service Manual Subsystem Specifications This topic contains specifications for the following EPEX Omniflex IV subsystems DirectRay Image Capture system DirectRay Detector and DirectRay Controller Overhead Tube Crane DirectRay Console X ray Generator X ray Tube Radiographic Table DirectRay Image Capture System A 2 Weight DirectRay Detector 8 6 kg 19 Ib DirectRay Controller 7 3 kg 16 3 Ib Dimensions DirectRay Detector Width 46 7 cm 18 4
87. duties Some effects of X radiation are cumulative and may extend over a period of months or years The best safety rule for X ray operators is to avoid exposure to the primary beam at all times Ionizing radiation occurs naturally in the environment It is generated by astronomical radiation sources such as the sun and the stars and by the soil under our feet The atmosphere filters radiation from astronomical sources As aresult the radiation level from these sources is much lower at sea level than on the summit of high mountains Radiation generated in the soil varies greatly from place to place depending on the composition of the soil For example areas rich in granite rock have a higher level of radiation than other areas Omniflex IV System Service Manual Any materials placed in the path of the beam absorb natural as well as manmade radiation such as the X rays used in the EPEX Omniflex IV System Materials with a high atomic number such as tungsten lead and uranium absorb X rays much more effectively than materials with a low atomic number such as hydrogen aluminum or beryllium Therefore lead is used for shielding the radiologist s workstation in most X ray facilities including ones using the EPEX Omniflex IV System If there are windows in the partition separating the operator from the patient these windows are typically glazed with lead glass and provide effective protection against ionizing radiation To minimize
88. e leveled to each other in the same horizontal plane Figure 3 5 Installed Rails MC30 112 tif 3 12 Installing the System Hardware EPEX Omniflex IV System Service Manual Room Layout For an illustration of a typical room layout refer to Figure 3 9 on page 3 17 However for your installation refer to the final site planning and the Radiographic Table to OTC drawings for specific details regarding the actual placement of equipment including the floor location of the table The Radiographic Table to OTC layout drawing shows the preferred install location of the OTC rails in relation to the table The dimensions in the Radiographic Table to OTC layout drawing allows positioning the OTC in A B or C detent SID setups Determining which detent setup s the customer will use enables you to optimize the room usage Figure 3 6 Setup Detent A A SETUP DETENT AND SWITCH CAM POSITIONS TABLE CENTER LATERAL DETENT TABLE CENTER LATERAL SWITCH CAM 72 ASETUP SID SWITCH CAM 40 44 A SETUP SID SWITCH CAM 5 TABLE C L io WALL A SETUP BUCKY LATERAL CENTER SWITCH CAM WALL A SETUP BUCKY LATERAL CENTER DETENT DK20 137 cdr Installing the System Hardware 3 13 EPEX Omniflex IV System Service Manual Figure 3 7 Setup Detent B B SETUP DETENT AND SWITCH CAM POSITIONS TABLE CENTER LATERAL DETENT TA
89. e path of the X ray to absorb low energy radiation before it reaches the patient The process of hardening the X ray beam to increase the ratio of photons useful for imaging to those photons that increase patient dose or decrease image contrast Inherent filtration is measured in aluminum equivalence which represents the thickness of aluminum that would produce the same degree of attenuation as the thickness of the material in question Another name for the new family of digital radiography systems The ability of crystals of certain inorganic salts to emit light when excited by X rays Device used to image moving structures with X rays The distance from the source of the X rays to the patient Captures into a computer the analog display output of cameras and VCRs Devices and conversion method between heterogeneous networks or systems Image of skeletal structures in large anatomic areas like the limbs chest and the abdomen Also referred to as Projection Radiography Device that supplies power to and controls the X ray tube Motion artifact in monitor displays of compressed video images Goniometer Grid Grid Ratio GUI Hardcopy Images Health Level 7 HL 7 Heat Unit High contrast Resolution HIS Hospital Information System HIS Image Artifact Image Intensifier Indirect Capture Integrated Synchronized Intensifying Screen Intensity Inverse Square Law Ionization Chambers Ionization Ratio
90. e stator windings or the rotor bearings Adjustments and Calibration EPEX Omniflex IV System Service Manual X ray tubes that have not been used for more than 8 hours may suffer thermal shock if operated at high mA and kV without a warm up procedure A cold anode Molybdenum is very brittle and when suddenly heated over a small area may experience thermal cracking of the anode surface eventually leading to permanent tube damage The procedure below is intended for seasoning an X ray tube prior to attempting tube auto calibration To season a tube that does not need to be calibrated simply follow steps 2 4 6 8 and 9 To condition a X ray tube Step 1 10 Action Start the tube auto calibration sequence and manually terminate the exposure at 70 kV and 250 mA Season the tube at 70 kV by taking approximately 10 exposures of 200 mA and 100 ms These exposures should be taken at the rate of approximately one every 15 seconds Restart the auto calibration sequence and manually terminate the exposure at 100 kV and 250 mA Season the tube at 100 kV by taking approximately 5 exposures of 200 mA and 100 ms These exposures should be taken at the rate of approximately one every 15 seconds Restart the auto calibration sequence and manually terminate the exposure at 120 kV and 160 mA Season the tube at 120 kV by taking approximately 5 exposures of 160 mA and 100 ms These exposures should be taken at the rate of approxim
91. eck the ramp voltage at the first gain stage output the first operational amplifier output on the AEC board for the specific AEC channel This voltage must never exceed 10 V If this voltage does exceed 10 V reduce the input signal level as required 4 44 Adjustments and Calibration EPEX Omniflex IV System Service Manual AEC Preliminary Overall Gain Calibration Note DirectRay Detector To determine the AEC overall gain calibration must be completed prior to performing this procedure Step Action 1 From the Generator Toolbox acquire and accept an image using the technique below 65 kVp 25 mA 250 ms backup time AEC cell 2 Film screen 2 Grid Speed 2 72 in HSID Collimator in auto mode No object in the beam full field size Grid in 2 Use DRIVEL to acquire a DV Mean for image center as the ROI 3 Adjust the master gain pot on the pre amp and repeat step until DV Mean is between 1850 to 1900 4 Verify AEC Cell terminates prior to backup time 5 Ensure that the DV Mean for image center cell 2 is between 1850 and 1900 6 Enter the measured DV Mean for the image center in the AEC Preliminary Overall Gain Calibration form Refer to the sample form below AEC Preliminary Overall Gain Calibration AEC Preliminary Overall Gain Measured DV for Image Center ROI Cell 2 Pass EPEX Preliminary Overall Gain cdr j f mm Phe Luft dote t T mnm aem gr nt epu Adjustments and
92. em Service Manual For the locations of the DirectRay Console components refer to Figure 2 3 Figure 2 3 DirectRay Console Components Image Preview Monitor Bar Code Reader Pointing X ray Generator Device Power Switches Network Connection Keyboard DirectRay Console Computer Serial Extension Bar Modem n Prep Expose Switch DirectRay Controller L ie Speakers P WAMI AZ Ss Nac SZ Power Supply Transformers DK10 031 eps General Information Omniflex IV System Service Manual Generator Components General Information The Generator provides the power and interfacing to operate X ray tubes the Bucky and digital imaging systems Refer to Figure 2 4 on page 2 10 The Generator components and functions are High frequency Generator One tube operation e Dual filament supplies Dual speed X ray tube stator supply e Optimal matching of X ray tubes by PROMs e Optional AEC up to four inputs Optional ABS with kVp or kVp mA fluoro stabilizer e X ray tube protection The Generator allows setting the following limits Maximum mA adjustable for each focal spot Maximum kVp adjustable for each X ray tube Maximum kW adjustable for each focal spot Maximum filament current limit adjustable for large and small focal spots Anode heat warning and anode heat alarm levels Calibration features Microprocessor design allows all ca
93. ent position s can be changed to meet grid focus distance or site related requirements Refer to Table 4 1 Ensure that the longitudinal rail and transverse bridge are level and the OTC is perpendicular to the rails Ensure that the table base is level to within 0 2 and parallel to the longitudinal rails within 1 16 in Ensure that the X ray tube port is level and perpendicular to the ground Use a calibrated digital level on the X ray tube port to ensure that the tube is level to within 0 1 or better in the transverse and longitudinal directions To adjust the tube transverse direction loosen the trunnion rings and rotate the tube front to back To adjust the tube longitudinal direction adjust the tube rotation cam in the rear of the tube head arm Verify at 90 rotation of the Y axis Verify at X90 rotation of the Z axis Table 4 1 Detent Position Table EPEX 3 HSID1 HSID2 Grid Focus Detent Distance fo Measure and Measure and Position i set detent to set detent to Al 100 100 cm 40 in 180 cm or 72 in 140 112 cm 44 in 180 cm or 72 in 2 2 2 140 180 cm or 72 in 180 cm A3 C3 N A N A N A 4 22 Adjustments and Calibration EPEX Omniflex IV System Service Manual Figure 4 1 Detents for Position A SETUP DETENT AND SWITCH CAM POSITIONS TABLE CENTER LATERAL DETENT TABLE CENTER LATERAL SWITCH CAM 72 A SETUP SI
94. er to Table 4 2 Table 4 2 X ray to Light Field Alignment Tolerance Distance Between Source and Light Field Bucky 40 in 100 cm 44 in 112 cm 56 in 142 cm 72 in 180 cm Exposure Factors 60 kVp 7 mAs 60 kVp 7 mAs 60 kVp 10 mAs 60 kVp 30 mAs Maximum Misalignment Allowed by BRH 2 0 8 in 2 cm 0 9 in 2 2 cm 1 12 in 2 8 cm 1 44 in 3 6 cm VA 1 0 4 in lcm 0 44 in 1 1 cm 0 56 in 1 4 cm 0 72 in 1 8 cm 4 81 EPEX Omniflex IV System Service Manual Step Action 7 The misalignment verified in step 5 could be caused by one of the following possibilities The light field is not centered in transversal direction Refer to the Collimator service manual that came with the system for the adjustments The light field is not centered in longitudinal direction Refer to the Collimator service manual that came with the system for the adjustments The light field is too small or too large Refer to the OTC service manual that came with the system for the Collimator differential vertical SID adjustments Note When the X ray and light field are aligned repeat the test per step 6 Aligning the Collimator Crosshair to the X ray Field With the central beam aligned and the light field calibrated with the X ray field the Collimator crosshairs can be accurately set to show the central beam Refer to the Collimator service manual that came with
95. es and strain reliefs for wear and pinching Check U arm cable drape inspect for cable sheath wear pinching or excessive bending Check sheathing on cables that exit the U arm and enter the ceiling for pinching cuts fraying or excessive bending Check tightness of all electrical cable connections Check for proper operation of cooling fans check that blades are clean Check markings on controls and positioner for legibility EPEX Omniflex System Annual cdr Appendix D Field Replaceable Units This appendix lists the names and part numbers for the most commonly field replaced EPEX Omniflex System components Contents Subject Page Orders iain Alaa oo KDE D 2 Omniflex System Service Manual Ordering Parts Parts can be ordered from Del Medical Systems 11550 West King Streer Franklin Park IL USA Service 1 800 800 6006 Part Units per Component Number Description Assembly DirectRay Console 100 0042 WAMI Power Supply 12 Vdc 295 0675 Reader Barcode Laser 1 100 0043 Outlet Strip 1 5 meter IEC 1 180 0439 Cord Power UPS 1 Cable Power Modem 1 180 0440 Cable Power Power 1 180 0442 Power Cord Assy Fans 1 180 0443 Cable Assy On Off Switch W7 1 180 0444 Cable Assy Prep Expose Switch W10 1 180 0445 Cable Serial DB25 DB9 W4 1 180 0446 Cable Serial DB25 DB9 W5 1 180 0447 Cable Serial DB25 D
96. exposure control device used with products A unit of electromotive force equal to 1000 V Peak kilo volts Determines the highest energy of X rays emitted by an X ray tube equal to the peak applied tube voltage The higher the kVp the greater the energy or force the more penetrating power the X ray has Glossary Latent Image Lateral Latitude LED Leveling Longitudinal Look Up Table LUT Low contrast Resolution LUT mA Magnetic Disk Matrix mAs Medial Millirad Modalities Modulation Transfer Function MTF Moire Pattern Glossary EPEX Omniflex IV System Service Manual Image stored in the silver halide emulsion made manifest by chemical processing Possible view position for X ray exposure so that the X ray beam passes from one side to the other Pertains to the side away from the midline Range of X ray exposure over which a radiograph is acceptable Light Emitting Diode Software manipulation technique that compensates for a monitor s inability to provide the same contract and bit depth as the original hardcopy X ray Positioning along the patient axis A table of values used to convert raw image data to output data for a specific ESA setting Ability to image objects with similar subject contrast image detectability Look Up Table Milliamperes The quantity of radiation For example as you go from 100 mA to 200 mA you are increasing the quantity of radiation
97. fety Information Omniflex IV System Service Manual A frequently used but less accurate method of determining the amount of exposure is placement of film at strategic locations After a specified period of time develop the film to determine the amount of radiation Fluorescent screens used in a darkened room may also be used to detect excessive radiation A common method of determining whether personnel have been exposed to excessive radiation is the use of film badges These are X ray sensitive film enclosed in a badge that incorporates metal filters of varying degrees of transparency to X ray radiation Even though this device only measures the radiation reaching the area of the body on which it is worn it does provide an indication of the amount of radiation received Radiation Protection Survey A radiation protection survey must be made by a qualified expert after every change in equipment or change in operating conditions which might significantly increase the probability of personnel receiving more than the maximum permissible dose equivalent Restrictions on Use The user is responsible for ensuring that the application and use of the EPEX Omniflex System does not compromise the patient contact rating of any equipment used in the vicinity of or in conjunction with the system The use of accessory equipment and or hardware not complying with the equivalent product safety and EMC requirements of this product may
98. ght field to the X ray field Action X ray is too small refer to the Collimator service manual Step that came with the system 1 2 3 4 5 Set SID to 100 cm Adjust the Collimator shutters so that the edges of the light field coincide with the rectangular outline of the Collimator test tool Note Ignore the Collimator crosshair Initiate an exposure at approximately 60 and 8 mAs Accept the image View the image in DRIVEL If the X ray field falls just within the image of the rectangular frame there is good alignment Refer to Figure 4 6 If an edge of the X ray field falls on the first spot 1 cm on either side of the line the edges of the X ray and light fields are misaligned by 1 of the distance between the X ray source and the Bucky An edge falling on the second spot 2 cm indicates an error of 2 at 100 cm The maximum allowed misalignment is 1 of the source to image distance Figure 4 6 Example of Alignment at 196 COLLIMATOR TEST TOOL 4 30 Adjustments and Calibration Alignment at one distance does not guarantee alignment at all other distances WARNING Adjustments and Calibration EPEX Omniflex IV System Service Manual Step Action 6 If the light field is aligned repeat the entire test for other commonly If the light field is not aligned go to step 7 used distances For suggested exposures and allowable errors at different distances ref
99. gs directory on the DirectRay Console You would only need to look at these files if directed to do so by Del Support Diagnostics and Troubleshooting 7 9 EPEX Omniflex IV System Service Manual Responding to Error Messages Error codes at the system level possible causes and recommended action to remedy the problem are detailed in Table 7 2 Table 7 2 System Level Error Codes Error Error Type Possible Cause Recommended Action AO Undetermined mAs Undetermined mAs the 1 Connect the mAs Meter paposure was abored 2 Connect the scope expose view kV and Premature release of the mA waveforms X ray exposure switch will cause a lower mAs exposure HV Cables Tube arcing Rotors not running correctly Al DirectRay Detector e Orientation sensing signals 1 Verify Bucky has power Orientation crossed 2 Verify DirectRay Detector limit switches Check for SCSI errors and analog array orientation signal from the Bucky 3 Verify Generator Panel M1 4 Verify Generator Panel N1 connector J4 Pin 18 and 19 have signals and J3 has signals 5 Verify Tube Stand Panel J2 has signals on Pin 5 Pin 1 Pin 9 for long signals and Pin 10 Pin 2 and Pin 11 carry cross signals 6 Verify I O Board TP16 has long signals and TP18 carries cross signals A2 Door Interlock Fault Safety circuit tripped Ensure the door Safety Interlock Switch is closed 7 10 Diagnostics and Troubleshooting Table 7 2 System
100. gure 3 9 Radiographic Table to OTC Layout Dimensions Radiographic Table to OTC Layout Dimentions 1 C L i 11 0 5 0 4 g 7 9 Io 2 7 MC10_205 eps Installing the System Hardware 3 17 EPEX Omniflex IV System Service Manual Starting the OTC Installation Refer to the OTC service manual that came with the system to begin the installation by installing the OTC on the rails Starting the Table Installation Installing the table consists of the following procedures e Assemble the Integrated Radiographic Table according to its service manual e Align and install the table to within 1 16 in to the OTC logitudinal rails Table to OTC Longitudinal Rail Alignment Aligning the Table to OTC Longitudinal Rails Proper table alignment to the OTC longitudinal rails is important for accurate radiation alignment The table base must be parallel with 1 16 in to the OTC longitudinal rails To ensure the 1 16 in parallel requirement Step Action 1 Attach the plumb line to the X ray tube mount and hover the plumb bob just above the floor surface Refer to Figure 3 10 as an e
101. h immobilized and ambulatory patients either upright or recumbent for any patient size or weight from small infants to obese adults e Rapid error proof procedure configuration image acquisition and quality control softcopy review The Generator and X ray tube output requirements accommodate any patient size or weight from small infants to obese adults e High quality softcopy and or hardcopy network transmission image review and archive of accepted examinations General Information General Information EPEX Omniflex IV System Service Manual The EPEX Omniflex IV System consists of the following components e X ray Generator e Overhead Tube Crane OTC e Collimator e X ray Tube e Radiographic Table Automatic Exposure Control e DirectRay Detector e DirectRay Console mage Preview Monitor e Pointing Device Keyboard e Prep Expose Switch Modem e DirectRay Controller WAMI System CPU Omniflex IV System Service Manual Major System Components Overhead Tube Crane OTC Components The OTC the EPEX Omniflex IV subsystem that hangs from the ceiling includes the following components 2 4 LONG rails there are two LONG longitudinal rails These rails are fixed to the ceiling structure usually I beams and Unistrut rails The LONG rails support the LAT rails and allow their movement in the left and right directions LAT rails there are two LAT lateral rails They are supported by the LONG
102. hannel Setup FS Ontions FS Reference Density su 15 _ 4 ssy 578 4 esky 5 4 mw d ew 41 _ 4 lo sw 275 _ u He Sp ee ey AE tee ley Re SP EL 1 2 Reference Level V 110 kv 4 Film Screen 7 2 03 130kv 2 18 4 MCAQ 204 di kV 50 55 65 75 85 95 110 120 Value 6 15 5 78 515 460 410 375 2 82 218 Click on the FS option menu tab and ensure the values are RLF Compensation at 50 ms 0 RLF Compensation at 500 ms 0 RLF Compensation at 1000 ms 0 Multiple Spot Compensation 0 Adjust as required 4 15 EPEX Omniflex IV System Service Manual X ray Tube Calibrations A WARNING gt CAUTION A CAUTION Prior to beginning tube auto calibration the tube used in this installation must be properly selected and the Generator limits should be programmed Refer to the procedures in the topic Generator Setup Menu on page 4 5 It is recommended that the replacement tube s be conditioned seasoned before beginning tube auto calibration refer to the first procedure in this topic The following procedure produces X rays Take all safety precautions to protect personnel from X radiation Always verify the manufacturer of the tube insert If the X ray tube has been rebuilt the tube insert and tube housing may be different manufacturers Collimator blades must be closed and lead apron applied to the tube before starting the tube calibration Conditioning the X ray T
103. he A B and C chest setup drawings identify the table orientation and the table location on the room floor 4 Identify and mark the floor where the table s 4 in square cable access hole is Installing the System Hardware 3 15 3 16 EPEX Omniflex IV System Service Manual Step Action Identify and mark on the floor the table s longitudinal centerline Identify and mark a line on the floor perpendicular to the length of the table 1 ft 2 in towards the foot end from the foot end side of the table Note This dimension is the location for the end of the drape rail and longitudinal rails on the foot end side Refer to Figure 3 9 on page 3 17 Identify and mark a line on the floor parallel with the centerline 4 ft 8 in towards the front of the table Note This dimension is the location of the center of the front longitudinal rail from the table centerline This mark should be long enough to cover the length of the rail Refer to Figure 3 9 on page 3 17 Identify and mark a line on the floor parallel with the centerline 5 ft 4 in towards the rear of the table This dimension is the location of the center of the rear longitudinal rail from the table centerline This mark should be long enough to cover the length of the rail Use a plumb bob or a vertical leveled laser alignment device to transfer these dimensions to the ceiling Installing the System Hardware EPEX Omniflex IV System Service Manual Fi
104. he EPEX Omniflex IV System refer to the Interconnect Diagram in Appendix E Use it as a reference during the installation process Cable routing both inside and outside the Generator cabinet can have a major impact on electrical noise interference Internally it is important to ensure the signal cables connecting to the System Controller E1B1 are routed and exit the cabinet as close to the left side and as far away from the Inverters as possible Externally route signal cables in conduits separate from the high voltage stator and three phase power mains cables If separate conduits are not possible separate the signal cables using metal dividers in the cable troughs All excess cable connecting to the console should be collected in the control room This minimizes electrical noise pickup from other wiring in the conduits or cable troughs To prevent line interference verify that the high voltage cables and the stator cable are run in conduits or troughs separate from the control and signal cables Do not turn the main disconnect switch on the circuit breaker box ON until all units are connected and ready for the calibration functional validation procedures To cable the EPEX Omniflex IV System Step Action 1 Verify that the mains input power circuit breaker is OFF 2 Verify that the RED wire connected between E10 and E11 for 480 Vac systems Note Wire is located on top left corner of Drive Aux Supply PCB on back wall
105. hree Million Volts Refer to NCRP Report No 33 Current recommendations of the International Committee on Radiation Protection Although X radiation is hazardous X ray equipment does not pose any danger when properly used Be certain all operating personnel are properly educated concerning the hazards of radiation Persons responsible for the system must understand the safety requirements and special warnings for X ray operation Review this manual and the manuals for each component in the system to become aware of all safety and operational requirements Incorrectly positioning the X ray tube and Collimator could cause the X ray field to be misaligned with the DirectRay Detector resulting in unacceptable images CAUTION A Ensure exposure parameters are properly adjusted within safety limits WARNING Safety Information 1 15 Omniflex IV System Service Manual Manufacturer s Responsibility Although this equipment incorporates protection against X radiation other than the useful beam practical design does not provide complete protection Equipment design does not compel the operator or assistants to take the necessary precautions nor does it prevent the possibility of improper use authorized or unauthorized persons carelessly unwisely or unknowingly exposing themselves or others to direct or secondary radiation Allow only authorized properly trained personnel to operate this equipment Be certain that all in
106. ier Gain form in Appendix C A sample of the form is shown following this procedure Calculate 11 mR mAs as the target AEC mAs for 56 in SID Note Expected value 2 5 20 3 mAs Remove the mR probe Mount 21 mm A1 filtration to the Collimator Use the following settings 56 in SID Grid in for mid range focus grid 10 x 10 in field size Portrait mode Set only the center AEC cell on Adjustments and Calibration 4 49 4 50 EPEX Omniflex IV System Service Manual Step Action 11 12 13 14 Use the following settings 110 kVp 50 mA 100 ms back up time Acquire exposures and adjust the AEC preamplifier gain to the target calculated mAs 0 1 mAs Record the actual mAs for the AEC in the Adjusting the Final Ion Chamber Preamplifier Gain form in Appendix C A sample of the form is shown following this procedure For reference record the DV Mean in the digital image center 1 x 1 in the Adjusting the Final Ion Chamber Preamplifier Gain form in Appendix C A sample of the form is shown following this procedure Y Adjusting the Final lon Chamber Preamplifier Gain mR mR mAs AEC Target mAs DV Mean Pass EPEX Preamplifier Gain cdr E fot M mm imme t T mmm rn uen nn mm aee a dine uem ITO s eS umet IN ep Adjustments and Calibration EPEX Omniflex IV System Service Manual lon Chamber Detector Balance PreAmp A C
107. igure Generator Mains Check Secure Board Seating Verify Internal Connections Install High Voltage Transformer Assembly outside U S only Seismic Anchoring if applicable Rails and OTC Installation Install the Longitudinal Rails Install the Lateral Rails Install the Brakes Install the OTC Install the X ray Tube Install the Collimator Cable Drapes Ooooooococo Installing the Table Place the table Drill the Holes Secure the Table Assemble the Tower Install the Detector Array Oooo o Cable to the Generator Electrical and Communication Lines Power Source to Generator X ray Room Warning Light X ray Room Door Interlock X ray Tube Anode and Cathode Cables Operator Console Communication Connections Oooo o Verify Alignment System Calibration Establish X ray Light Field Coverage Network Connections Verify Modem Connection System Configuration Application Configuration System Acceptance Testing Return Templates and Caster Bars to Hologic EPEX Omniflex System Checklist cdr Initial Volt Measurement Main Line Fuse Voltage Vac L1 phase to L 2 phase L1 phase to L 3 phase L 2 phase to L 3 phase Driver Auxiliary Board Voltage Vac F4 to F6 M tal Verify that the voltage is 400 Vac Verify there is no voltage present across any main input phases Verify that the red LED Ds1 is lit Pass RADEX Initial Volt Measurement cdr
108. in Height 46 7 cm 18 4 in Depth 4 3 cm 1 7 in DirectRay Controller Width 49 5 cm 19 5 in Height 37 8 cm 14 9 in Depth 9 4 cm 3 7 in Image Area Full field 35 x 43 cm 14 x 17 in active image area Detector Pixel 139 um 129 um x 129 um active element size 2560 x 3072 detector element matrix 89 geometric fill factor Presampling 98 at 1 0 cycles mm MTF 89 at 2 0 cycles mm 70 at 3 0 cycles mm Static Load 18 kg 39 Ib applied to the front surface over a nominal 10 x 10 cm 4 x 4 in area EPEX Omniflex IV Specifications EPEX Omniflex IV System Service Manual Overhead Tube Crane EPEX Omniflex IV Specifications Telescopic Carriage Weight Rails Weight Telescopic Carriage Size Rail Size Electrical Ceiling Rails Longitudinal Length Ceiling Rails Lateral Length Ceiling Rails Longitudinal Travel Ceiling Rails Lateral Travel Exploitation Area Tube Vertical Travel Focal Spot Telescopic Axis Distance Minimum Focal Spot Ceiling Distance Typical Room Ceiling Height Tube Rotation Around Telescope Axis Tube Rotation Around Horizontal Axis Counterbalancing System Balanced Weight Range Maximum Effort for Longitudinal Movement 170 kg 374 Ib 170 kg 374 Ib Width 70 cm 28 in Depth 95 cm 38 in Height 105 cm 42 in Width 85 cm 34 in Depth 455 cm 182 in Height 50 cm 20 in Single phase 115 V to 230 V 10 50 60 Hz 300 VA 4400 mm 3000 mm 37
109. inal position leaving room to enable the cabling and assembly required 9 Remove the front and side covers of the generator including the bottom panels Positioning the DirectRay Console Unpack the DirectRay Console at the loading dock For instructions refer to the DirectRay Console Service Manual EPEX Omniflex IV System Wiring Diagrams For information on how the EPEX Omniflex IV components are connected refer to Appendix E Installing the DirectRay Console To install the DirectRay Console move the DirectRay Console to its final location Refer to the DirectRay Console Service Manual for installation instructions Installing the System Hardware 3 11 EPEX Omniflex IV System Service Manual Installing the Rails The first step for installing the OTC is to install the OTC rails and OTC bridge according to the site planning drawing and the OTC service manual that came with the system Checking the Ceiling Preparation Del hires an independent contractor to install the support beams and the Unistrut rails that hold the OTC These beams must be installed and they must pass inspection before you can begin installation of the system For an example of installed rails refer to Figure 3 5 A quick inspection of the support beam system should reveal e Rails have slots at the bottom for nuts and bolts to support the longitudinal rails Rails are leveled in both the longitudinal and transverse directions Rails ar
110. inbj3 31BVINAV LON Y N 9 ea SNIOVdS WOOd di ee INIIBIG aoda 9 2 SNLSIX3 dinoda 46 8 22 1 EL JOSLNDO 14 310N 335 e O3NO9IS3Q3H OHINOO SeH3Sld wy 915 3 1 T1034 LY NMOHS dOL 31871 915 3 FFH no 80103 66 WNOOH 10 1 24 a1va unm L WITadd OV PSPPV H31N3O WOIGSAW SIDOTOH 035070 38 OL SSVd 1 esnj YDUMS JOSUUOSSIPD apisu paio2o Du puno48 0 punoj6 sip Buipying sy peuinbea S ww Gz OMV v 9 qo punoa a2eddoo ejoaodes y MA O8 vf pus6 puo 4emod 1 jo unJ 104 ADI KX eui 5 j99euuoosi y OMY 9Z S SIM I DO d O L 1 Lj 14002 13O0L 1406 puno45 UHD o5Ah383o4d pub 10j YAMS OaUUOdSIG 24 Oo 1euJ10jsuDJ Ajddns y DMY ezis H3ddOO 38 OL Tv puo SUIDW SulO G 0 Pedua xpW peduap eut O8 Sduiv QL snonunuoj3 O8v SduN Stl Queuuno OOL
111. ing Bad Pixel Map Ensure initialize DirectRay Controller Panel Communication Error Ensure Generator powered up Generator Status Indicator Error condition such as Verify Generator Status fields indicate HUOOLUNGS communication error Cannot Enter Patient Data Verify correct character string entered Ensure mandatory field have data 7 14 Diagnostics and Troubleshooting EPEX Omniflex IV System Service Manual Table 7 3 Troubleshooting System Problems Symptom Possible Cause s Recommended Action Status Bar Indicates Problem DirectRay Detector Will Not Rotate Bucky Will Not Move Vertically Tube Does Not Position Properly Exposure Failed Bucky not in motion Communication failure DirectRay Controller PAC failed POST Failure Diagnostics and Troubleshooting Sleep condition press B to wake up the DirectRay Controller Error condition is blocked call Service Check into the logic of the Tower Check into the logic of the Tower Verify vertical latch handle is working Verify power to the Tower Verify locks disengaged Verify LVLE to vertical latch assembly Verify tube positioning is not at the limit switches Manually move the tube to the to the midposition and rotate the DirectRay Detector for recal Check control circuit Check WAMI Check System Controller Motherboard Check Remote ON OFF Board Check Power Supply Board Check Rotor Controller I O Board Check Sy
112. ing Collimator 590 0512 Swivel Ring Collar 590 0513 Thumb Screw 590 0514 Window Crosshair 590 0515 Knob Front Panel Field Replaceable Units D 3 Omniflex System Service Manual Part Units per Component Number Description Assembly Collimator cont 590 0516 Lamp Switch Pushbutton Assy 590 0517 Lamp Light Dze 24Vac 150W 590 0518 Socket Lamp 590 0519 Current Limit Resistor 590 0520 TRIAC 15 A Light Timer 590 0521 Prism Centering Line 590 0522 Tilt Switch 590 0523 Cone Track Kit Option 590 0524 Low Filter Mirror Brkt Assy 590 0525 Miror Bracket Assy 590 0526 Motor Linear IV Stepper 590 0527 Tape Measure 590 0534 EMI Filter 590 0535 Transformer Pwer27 19 Vac 590 0536 Fuse 3A Slo Blo Power 590 0537 Fuse 8A Slo Blo Lamp 590 0539 Relay 24 VDC 590 0540 Potentiometer 1K 10 Turn 590 0541 Switch Snap Action 590 0542 Cable 70 Inch X ray Tube 480 0034 X ray Tube Omniflex 011 0143 Tube Trunnion Assy Painted 480 0033 PX1436 Dunlee X ray Tube Unpainted 295 0666 Trunnion Ring Assy Unpainted Bucky 010 1165 Bucky DR1000 0 590 0032 Bucky PCB Assembly 1 590 0033 Bucky Grid Assembly 1 D 4 Field Replaceable Units Omniflex System Service Manual Part Units per Component Number Description Assembly Bucky cont 590 0034 Bucky Grid Present Sensor 1 590
113. ion of the Generator When you reenter auto calibration the tube calibration resumes from where the error occurred 4 18 To calibrate the X ray tube Step 1 Action Connect the Service laptop to J11 on the CPU board via the null modem cable From the GenWare Program setup select window choose Set up Select Auto Tube Calibration The Tube Calibration menu displays Select tube 1 The Tube Auto Cal menu displays Select the small filament Note Press Focal Spot to toggle between Small and Large The small focal spot displays Press and hold the X ray handswitch to begin the calibration procedure Note This will take approximately five minutes This menu indicates the mA and filament current while the Generator takes a series of exposures When auto calibration is complete for the small filament choose the large filament Press Return to repeat calibration on the large focal spot Adjustments and Calibration Adjustments and Calibration EPEX Omniflex IV System Service Manual 9 When auto calibration is complete press Close to exit the tube auto calibration menu The Generator Utility menu displays EPEX Omniflex IV System Service Manual Collimator System Calibration System Adjustments and Calibration 4 20 In order to correctly set up and operate the Collimator it is necessary to adjust all the potentiometers sensing circuits Refer to the Collimator Overhead Tube Crane and Table
114. ives Safety Information The manufactures or parts and subsystems in the EPEX Omniflex Overhead Tube Crane are represented in the European Union by the following Villa Sistemi Medicali Via delle Azalee 3 20090 Buccinasco MI Italy Omniflex IV System Service Manual Identification Labels The EPEX Omniflex IV components have manufacturing and certification information affixed The manufacturing label contains The full name and address of the manufacturer of the component The place month and year of manufacture The model number and serial number of the component The certification label also states that the component complies with either 2 CFR Subchapter J or the applicable DHHS standards under the Radiation Control for Health and Safety Act of 1968 or its equivalent A label may combine both manufacturing and certification information Overhead Tube Crane Labels Refer to the EPEX Omniflex IV Overhead Tube Crane service manual for the location of the Overhead Tube Crane Identification labels Safety Information EPEX Omniflex IV System Service Manual Generator Labels The location of the Generator identification labels are shown in Figure 1 1 Figure 1 1 Location of the Generator Identification Labels SYSTEMCONTAINS FIRMWARE PART NO OIL TANK PART SERIALNO REMSION MFG DATE HV GEN PART NO COMPATIBLE WTH SYSTEM MODEL
115. le of elements as rare earth elements because they are rare in the earth s atmosphere They are very close to each other and difficult to separate Refer to intensifying screens Lying down or reclining Roentgen Equivalent Man Ability to image objects with fidelity Ability of an imaging system to record separate images of small objects that are placed very close together The resolving power of an imaging system is usually measured with a series of parallel wires or lead strips placed so that the space between each strip is equal to the width of a strip The resolving power of the system is usually determined by how many line pairs per mm can be clearly seen in the developed radiograph Radiology Information System RISC Roentgen Roentgen Equivalent Man REM RSNA Scan SCR SCSI Secondary Factors Sharpness Shonin SID Signal to Noise Ratio S N Ratio Softcopy Soft Tissue Solaris Source to Image Distance SID Spatial Resolution GL 10 EPEX Omniflex IV System Service Manual Reduced Instruction Set Computer The unit of radiographic exposure dose designed by the symbol R One R of exposure will produce in tissue an absorbed dose of approximately one rad Named after Wilhelm Conrad Roentgen the scientist that discovered X rays in 1895 A unit that measures radiation in terms of the energy involved the same as RAD weighted by a factor related to the type of radiation For the types of r
116. lead to a reduced level of safety and or EMC performance of the resulting system Consideration relating to the choice of accessory equipment used with this product shall include The use of the accessory in the patient vicinity e Evidence that the safety certification of the accessory has been performed in accordance with the appropriate IEC 60601 1 and or IEC 60601 1 1 Harmonized National Standards Evidence that the EMC certification of the accessory has been performed in accordance to the IEC 60601 1 2 Harmonized National Standards Safety Information 1 17 A CAUTION EPEX Omniflex IV System Service Manual Some components of the EPEX Omniflex IV System have been classified as to acceptable applications of use in accordance with Information Technology Equipment regulations Observe all safety precautions recommended by the accessory equipment manufacturer in the user documentation provided with the equipment With a laser bar code reader observe any laser precautions The hardware specified for use with the EPEX Omniflex IV System has been selected tested and verified by Del to meet the intended applications All specified hardware meets applicable regulatory agency requirements for those countries where it is offered for sale with respect to its intended applications Consult the user documentation included with the equipment for specific information relating to product safety and EMC compliance Safety Information Ch
117. libration and programming to be performed via the Console mA calibration is automated Messages and diagnostic information For users and service personnel the Generator console displays various messages indicating status or equipment problems The user is prompted in case of errors Error log stores the last 200 errors and associated Generator settings Service and diagnostic information available via a laptop computer optional kVp range radiography 40 to 150 kVp 2 9 Figure 2 4 Generator Components 2 10 EPEX Omniflex IV System Service Manual mA range radiography 25 to 320 mA 30 kW 630 mA 50 kW 800 mA 65 kW and 1000 mA 80 kW mAs range tube dependent max 1000 mAs time range radiography 2 0 to 6300 ms Repetitive self checks of the Generator functions that provide a display of system faults and operating errors For the locations of the Generator components refer to Figure 2 4 POWER EPROM NOTE ORIENTATION REAR FORBBITCPUBOARD permen PIN 732174 FOR 18 BIT CPU BOARD P N 734573 General Information EPEX Omniflex IV System Service Manual Input Power Power to the Bucky and Collimator is supplied by the line adjusting transformer in the lower Generator cabinet Figure 2 5 CPI Input Power 480 Vac Generator 120 kVa 3 H 5 J3 Tube Crane E J 5 a o S 124 Collimator Ss Video a Display Oo 7 J5
118. ll electrical cable connections n Check for proper operation of cooling fans check that blades are clean Check markings on controls and positioner for legibility EPEX Omniflex System Annual cdr Preventive Maintenance EPEX Omniflex IV System Service Manual System Preventive Maintenance 5 6 For preventive maintenance for the Collimator refer to the manufacturer s service manual For preventive maintenance for the X ray tube refer to the manufacturer s service manual For preventive maintenance for the Overhead Tube Crane refer to the manufacturer s service manual For preventive maintenance for the Generator refer to the manufacturer s service manual For preventive maintenance for the Radiographic Table refer to the EPEX Radiographic Table Service Manual For preventive maintenance for the DirectRay Console refer to the DirectRay Console Service Manual Preventive Maintenance Chapter 6 Repair and Replacement This chapter provides information on the location of instructions for the repair and replacement of EPEX Omniflex System components For the Generator refer to the manufacturer s documentation For the Overhead Tube Crane refer to the manufacturer s documentation For the X ray tube refer to the manufacturer s documentation For the Collimator refer to the manufacturer s documentation For the Radiographic Table refer to the EPEX
119. locally the DirectRay Console Task Launcher is opened but no functions are automatically started There are also additional minimized windows The top layer Netscape page is the default screen to service menus and files Clicking on the main menu and moving the window reveals the common desktop environment A UNIX Toolbar is located at the bottom of the screen Display Lock Log Out Style Help Minimize Button Button Manager Manager button Mail Workspace Print Application Trash Tool Switch Tool Manager Bin buttons GS20 054 cdr Diagnostics and Troubleshooting 7 3 EPEX Omniflex IV System Service Manual From the UNIX Toolbar the terminal popup menu is used to telnet to other network devices or to enter UNIX command lines Service can telnet to the DirectRay Console to obtain command lines remotely and to upload download files to the DirectRay Console using the FTP protocol Calculator A standard scientific calculator is available from the desktop SCSI Error Handling Error handling messages between the DirectRay Controller and the DirectRay Console CPU are categorized into two types depending on the action required to recover e Warnings given when a problem is detectable and recoverable with no loss of system functionality and is not likely to be indicative of a system failure For example an attempt to initiate an image capture before all systems are ready produces a warning e Errors problems that impact s
120. n Test panel displays This panel includes instructions for how to set the technique settings and take exposures for the calibration Note Refer to the DirectRay Operator Console Service Manual for specific images of the Calibration Test panel and other screens Adjustments and Calibration Adjustments and Calibration EPEX Omniflex IV System Service Manual Step Action 5 Change the technique settings as defined in your Calibration Test panel 6 Remove the grid 7 Take an exposure The progress of the calibration displays in the calibration panel If the calibration is successful a 1 displays in the calibration panel If the calibration is not successful adjust the technique settings and take another exposure 8 Click the Accumulate Calibration button 9 Repeat steps 7 and 8 until you have accumulated four calibrations 10 When you are finished the calibration sequence click the End Calibration button If you want to discard the accumulated calibrations and start over click on the Restart Calibration Sequence button 4 39 EPEX Omniflex IV System Service Manual Connecting Test Equipment Connecting the kV Meter Figure 4 7 illustrates the over table HVL setup only for the Keithley Model 10100A Triad Field Service kit Refer to the over table HVL setup in the kV meter s operator manual for detailed instructions For any other kV meter manufacturers refer to their operator manual for instructions
121. n tables for each subsystem earlier in this appendix 290 cm 114 in EPEX Omniflex IV Specifications Appendix Recommended Tools The following tools and equipment are recommended for installation and or service of the EPEX Omniflex IV equipment Ensure that these items are available and in good condition before beginning any procedures Contents Subject Page Hand TOO e este reo ceo B 2 Metric e erode veteres ake B 6 Electrical Tools 5 2 Teva e ve daw eer Ve Pe IE RE OR E RES B 6 Test ESUIDIBOHE eet Ses p fecto pot Lote B 7 B 1 Hand Tools B 2 EPEX Omniflex IV System Service Manual The following is a list of the hand tools required Calipers Precision Crowbar Grease Insulating Silicone Hammer Claw Hammer Rawhide Hand Files Assorted Sizes Heat Gun Hex Driver Set T Handle Inch Hex Driver Set T Handle Metric Ice Pick Level Engineer s 15 in Level Spirit L Wrench Set Balldriver Nutdriver Set Metric Pliers Bent Nose Pliers Channellock Pliers Curved Long Nose Pliers Needle Nose Electronic Screwdriver Set Offset Ratchet Specialized Products Field Service Tool Kit PN SPC 79 Adapter DB 25 to DB 9 Alignment Tool Trimpot Adjuster Analyzer Receptacle with Ground Blade Nutdriver 3 16 to 1 2 in e Blade Screwdriver Phillips No 0 Blade Screwdriver Phillips No 2
122. n the blocks as described in the following table AEC Density 8 Density 0 7 Density 0 6 Density 0 5 Density 62 4 Density 50 3 Density 37 2 Density 25 1 Density 12 Density 12 2 Density 25 3 Density 37 4 Density 50 5 Density 62 6 Density 0 7 Density 0 8 Density 0 Adjustments and Calibration EPEX Omniflex IV System Service Manual AEC Setup The following table defines the AEC setup parameters Parameter Definition Channel Selects the AEC channel to be programmed Left Field Enables or disables the left field for the selected AEC channel NO is disabled Center Field Enables or disables the center field for the selected AEC channel NO is disabled Right Field Enables or disables the right field for the selected AEC channel NO is disabled Chamber Type Selects Chamber or Solid State S S chamber for the selected AEC channel Film Screen 1 Enables or disables the selection of Film Screen 1 for that AEC channel NO is disabled Film Screen 2 Enables or disables the selection of Film Screen 2 for that AEC channel NO is disabled Film Screen 3 Enables or disables the selection of Film Screen 3 for that AEC channel NO is disabled 4 14 Adjustments and Calibration Adjustments and Calibration EPEX Omniflex IV System Service Manual Adjust the FS reference values for each kV in Film Screen 1 2 and 3 according to the table shown below AEC Calibration Points AEC C
123. nce no gradations in between are permitted digital signals are precise unambiguous and quite immune to noise Refer to Analog DirectRay technology is a direct conversion process because it directly captures and converts X ray energy into electrical signals No intensifying screens intermediate steps or additional processes are required to capture and convert the incident X ray energy Conventional screen film computed radiography and most emerging flat panel image capture systems are indirect because of their reliance on an X ray to light to signal process Registered trademark name for the Direct Radiography Corp DirectRay Detector and DirectRay Controller The DirectRay System component that houses the CPU where the user interface runs the DirectRay Controller and the uninterruptible power supply UPS It also stores the DirectRay Console Application the user interface for the system The interface between the DirectRay Detector and the DirectRay Console controls The DirectRay Detector is a flat panel that receives the X ray image and converts it to digital information The DirectRay Detector replaces conventional X ray film and cassettes A term used to distinguish the use of a photoconductor based method as opposed to the X ray capture and conversion method used in a scintillator or phosphor based detector Difference in size and or shape of the radiographic image as compared with that of the part examined Amount
124. nce with the safety standards in effect at the time of product release introduction in the United States UL 2601 1 or UL 1950 Canada C22 2 No 601 1 M90 or C22 2 No 950 95 and the European Union EN60601 1 and collateral and particular standards EN 60825 1 and or EN60950 The results of these safety tests and inspections show that the EPEX Omniflex IV System is safe There are however certain residual hazards resulting from the mechanical articulation of the system Minimizing the risk of injury to the patient and to the operator resulting from these residual hazards requires care and alertness on the part of the operator When appropriate parts and subsystems have also been tested and evaluated for compliance with electromagnetic compatibility EMC requirements including radio frequency emissions The CE mark displayed on each part and subsystem indicates compliance with generally accepted EMC requirements as well as with European safety requirements Radiation Protection Safety Information Serious unfavorable health effects can result from short term exposure to high levels of ionizing radiation such as X rays as well as from long term exposure to low levels Personnel who operate the EPEX Omniflex IV System should familiarize themselves with both the short term and the long term effects of radiation exposure and take appropriate measures to minimize the amount of radiation to which they are exposed while performing their
125. nd 4 3 ETO e c 4 4 EN 4 4 Generator Setup Menu usce tete eet ener ee a NEG Ve UR p eve bo Rete 4 5 Receptor Setpa nasa BAe deabus DUAE Lo MEO ELI E 4 5 AEC Sep ed a MUR 4 8 Receptor sas casu EMI ae neues 4 9 VO Configuration nisi e nacen t eR e epe ate ede e AERE 4 10 AEC Density Calibration i532 3 dei che Irae dtes tend doct 4 13 AEC E 4 14 X ray Tube s ioca bale tatum else 4 16 Conditioning the X ray 4 16 X ray Tube Warn Ups cedat uta ae te ana Deals Cue 4 18 X ray Tube Calibration Procedure eene 4 19 Collimator System Calibration 4 20 System Adjustments and Calibration esee 4 20 Central Beam and X ray to Light Field Adjustments 4 21 Mechanical Checks Before Beam Alignment 4 22 Aligning the Test Tool to the DirectRay Detector Center 4 26 Aligning VSID Central Beam to the DirectRay Detector Center oeste 4 27 Verifying VSID X ray Field Centered to the DirectRay Detector Center inier pet lend atone 4 29 Aligning the Collimator Light Field to the X ray Field 4 30 Aligning the Collimator Crosshair to the X ray Field 4 32 Aligning the HSID Central Beam and X ray Field Center to DirectRay Detector 4 33 vi
126. ng the Generator Utilities tette 4 3 Generator Setup Mensa ed ote BAe 4 5 X ray Tube Calibrations adc ooo etd It cto e uie ub caudis 4 16 Array Tube Warm Up coi aie devote 4 18 Collimator System Calibration eene 4 20 Calibrating the DirectRay Detector esee 4 38 Connecting Test Equipment oce pe ees ters coe ea tds 4 41 Adjusting Automatic Exposure Control AEC sess 4 43 4 1 EPEX Omniflex IV System Service Manual Connecting the Service Laptop Installing the GenWare Console Program The minimum requirements for running the GenWare Console are a 486 based computer capable of running Windows 3 1 or higher with at least 8 MB of RAM and 40 MB of free hard drive space It should be noted that fulfilling the minimum requirements does not necessarily mean that the program will function at a satisfactory speed To install GenWare Console insert the first of the three disks into the drive and run a setup from within Windows Be sure to have all other applications closed before starting the installation After the installation has begun follow the instructions on the screen Connecting the computer to the console unit is done using a standard null modem cable The cable is connected to the serial port on the computer and the 9 pin port J11 of the Generator CPU board Starting GenWare Console To begin the program double click
127. nsole Experimental technique that exploits the fact that X rays are diffracted by crystals Total elapsed time from when an X ray image is captured until another X ray image can be captured by a digital detector A method of reducing required data storage capacity by storing data in encoded form Various encoding methods are used to eliminate gaps empty fields and redundancies to shorten the length of records The degree of blackness on a radiograph Relative sharpness of the internal structures of a body as they are demonstrated on a radiograph Method for measuring image quality Detector element in an image capture device Sometimes called the Dexel There are 7 8 million of these in a DirectRay Detector A device for positioning and holding an articulated mechanism in relation to another so that the device can be released by force applied to one of the parts An X ray system designed for irradiation of any part of the human body for the purpose of diagnosis or visualization Digital Imaging and Communications in Medicine An medical industry standard specification for interconnection of medical imaging equipment Digital Signal Direct Capture DirectRay DR DirectRay Console DirectRay Controller DirectRay Detector Direct Radiography DR Distortion Dose Dosimeter DQE DR DRC DRIVEL DROC A signal whose units are represented by either one of only two states on or off yes or no 1 or 0 Si
128. ocal spot at 90 from the long axis of the tube housing Also known as the principle ray A device that converts light into electrical energy A CCD consists of a two dimensional matrix of many thousands of individual photosensitive elements Each element generates a charge that varies with the intensity of the light it receives These charges are passed out one by one row by row from a single connection to form a continuous analog signal Glossary Collimator Compton Scattering Computed Radiography CR Cone Contrast Media CPU Crystallography Cycle Time Data Compression Density Detail Detective Quantum Efficiency DQE Detector Element Detent Diagnostic X ray System DICOM Digital Imaging and Communications in Medicine DICOM Glossary EPEX Omniflex IV System Service Manual Regulates the size and shape of the X ray beam to accurately localize the area of interest on the patient while reducing overall patient irradiation exposure Name for almost all of the scatter radiation encountered in diagnostic radiology The digital generation of X ray energy using storage phosphors Cone shaped device placed between the X ray tube and the patient to limit the beam of primary radiation striking the part thus reducing the amount of secondary radiation that is formed An opaque substance used to provide visual contrast in the images of tissues and organs Central Processing Unit of the DirectRay Co
129. of AEC 4 42 Ramp vs Exposure Command and kVp The X ray Generator including the AEC pickup chamber has a minimum response time from the start of the exposure command until there is a kV value sufficient to start producing X rays There is a further delay before the start of current flows from the AEC device Likewise there is a minimum response time from when the AEC stop command is issued until the kV has actually decreased to the point that X rays are no longer produced The following illustration depicts this graphically START amp RELEASE EXPOSURE kVp MC20_145 CDR e 1 to 2 is the time from the exposure start command to kVp start Time 1 0 3 ms e 2 to 3 is the reaction time of the DirectRay Detector to start a current flow Time to 3 ms 3 to 4 is the required exposure time 4 is AEC stop command from the Generator AEC circuits 4to5 is the Generator shut down time including cable discharge time and so on Time 1 5 to 3 0 ms e 1 to 6 is the total time the exposure switch is activated e For AEC boards with short AEC time compensation AEC techniques should have minimum exposure times greater than 5 ms Adjustments and Calibration EPEX Omniflex IV System Service Manual AEC Limitations Maximum Exposure Times For diagnostic radiography the FDA limit I gt 600 mAs in AEC
130. of energy deposited in the body tissue because of radiation exposure Device worn for the assessment of dose equivalence Detective Quantum Efficiency Direct Radiography DirectRay DirectRay Console DirectRay Image Viewer DirectRay Operator Console This abbreviation appears on many of the DirectRay Console application screens and in the Netscape Service Tool Dynamic Range Edge Enhancement EPEX ESA Ethernet Exam Specific Algorithm Fill Factor Filters Filtration Flat Plate Detectors Fluorescence Fluoroscope Focal Distance Frame Grabber Gateway General Radiography Generator Ghosting Glossary EPEX Omniflex IV System Service Manual Shades of gray Image processing treatment to sharpen the appearance of edges Del digital radiography system designed to optimize the DirectRay technology Exam Specific Algorithm A communications protocol that runs on different types of cable at a data signaling rate of 10 million bits per second Algorithm used to optimize raw image data for a particular type of exam As relates to the photon gathering area of the digital detector For example 20 of a detector element s area may be used to conduct the charge out of the pixels thereby making this area insensitive to light In this example the detector would only have an 80 fill factor Due to a mushroom patent the DirectRay Detector has a very high fill factor Sheets of metal placed in th
131. of top cabinet 3 Verify Generator CPU circuit board jumper positions JW2 2 to 3 JW3 2 to 3 and JW5 1 2 Note On the Generator Interface board JW9 is in 2 to 3 position 4 Loosen but do not remove the HV transformer vent screw 5 Verify the mA test jumper is in place Note The cable access plates are on the rear top and mid section of Generator cabinet 3 25 EPEX Omniflex IV System Service Manual Step Action 6 Route and connect the HV cables and grounds into the HV transformer in the bottom cabinet ensuring anode and cathode are properly polarized with the X ray tube Note Cables should be started at the OTC and worked backwards towards the Generator 7 Connect Power Supply cable PN 180 0507 from the OTC to the Power Distribution PCB in lower section of Generator cabinet L brown N blue Grn Yel Gnd Refer to Appendix E for all system interconnections Cable Connections For the overall cabling connections for the EPEX Omniflex IV System components refer to the wiring diagrams in Appendix E Cabling the Generator To cable the Generator Connect the input power nominally 480 VAC 3 phase to the input terminal block in the generator Refer to the generator service manual for more specific instructions X ray Tube Housing Ground Refer to the generator service manual for specific instructions on grounding the x ray tube housing to the generator Failure to make this ground
132. on forms in Appendix C A sample is shown following this procedure Note Write N A or for the non adjusted data 4 46 Adjustments and Calibration EPEX Omniflex IV System Service Manual Step Action 11 After the reference values have been determined for Film Screen 2 change the reference values in Film Screen 1 and 3 to match the reference values in Film Screen 2 12 Ensure that Film Screen 1 2 and 3 reference values match Note The following screen is an example of the values in Film Screen 1 The values in the Film Screen 2 and Film Screen 3 should match the values in Film Screen 1 Note The numbers in this Film Screen 1 screen are being shown as an example only They are not to 7 be used as input values koe AEC Calibration Points i i u E um Adjustments and Calibration 4 47 4 48 EPEX Omniflex IV System Service Manual AEC kVp Compensation for Film Screen 2 kVp 50 55 65 75 85 95 110 120 Delta Phantom 15in 15 Sin 45in 45in 6in Thickness AEC ms N A DV Mean Reference 6 15 5 78 5 15 4 60 4 10 3 75 2 82 2 18 N A requirement Delta 200 to the acquired DV Mean at 65 kVp Pass EPEX Omniflex kVp Compensation for Film 2 cdr praa f m m Pas Lat dome I T manm uem na Is e mit arm ant I ae ue AEC kVp Compensation for Film Screen 2 2nd Iteration kV
133. ossary
134. p 50 55 65 75 85 95 110 120 Phantom Thickness 1 5 in 1 5 in 4 5 in 4 5 in 6in AEC ms DV Mean Reference 5 15 requirement Delta 200 to t he acquired DV Mean at 65 kVp Delta in in in in N A N A E N A EPEX Omniflex kVp Compensation for Film 2A cdr PEN f AED ee T mamma lO nun 7 amm ur S umm aunt anum Pass Adjustments and Calibration EPEX Omniflex IV System Service Manual Adjusting the Final lon Chamber Preamplifier Gain To adjust the Ion Chamber Preamp gain R26 on the Ion Chamber Preamplifier Board exposures or when the tube rotor runs for an extended period of time Prevent N The X ray tube housing temperature may become excessive when taking numerous damage to the X ray tube by allowing the X ray tube assembly time to cool during CAUTION testing Step Action 1 10 Position the mR probe centered 61 in from the focal spot Collimate to 8 x 8 in at the probe Measure the mR at 110 kVp 100 mA 100 ms 10 mAs and non AEC Record the mR in the Adjusting the Final Ion Chamber Preamplifier Gain form in Appendix C A sample of the form is shown following this procedure Determine whether the X ray source assembly mR mAs equals mR 10 Note Expected value 4 5 40 5 mR mAs Record the mR mAs in the Adjusting the Final Ion Chamber Preamplif
135. port Device Operator Control Switches Bucky Electro pivot point mechanical components n m VO interface a ae z Horizontal track Tower pivot point bl Movement Bid Controls ucky PB20_116 CDR Link Joint DirectRay Console Components The DirectRay Console is used to enter patient information initiate the exposure process preview captured images and accept or reject captured images From here the operator can select techniques through mouse control view recall and manage images stored in its database or distribute images for example to a printer or archive The DirectRay Console components are mage Preview Monitor a CRT display that the operator uses to view the EPEX Omniflex IV System The monitor is used to run software calibration and diagnostics e Bar Code Reader if the hospital preprocesses patient information and prints it on a bar code the operator can use the Bar Code Reader to input this information to the system e Keyboard and Pointing Device the operator uses the keyboard and pointing device to control the EPEX Omniflex IV System functions through the software e Prep Exposure Switch used to signal the system to take the preview exposure X ray Generator Power Switches the upper switch turns the Generator power on and the lower switch turns the Generator power off General Information 2 7 Omniflex IV Syst
136. r by either the absorption or deflection of photons from the beam The process of disinfecting articles by heating them with pressurized steam Ion chamber within the Bucky Used to terminate X ray when image density is achieved by measuring the amount of dosage occurring at the DirectRay Detector and providing feedback to the X ray Generator to stop the exposure Secondary rays formed when remnant radiation that has passed through the cassette or detector is scattered back toward the image capture mechanism Chalky liquid that outlines various parts of the digestive tract on an X ray The number of bits per second at which a digital signal is transmitted The smallest unit of information in a notation using the binary system The component that houses the DirectRay Detector AEC moving grid and related components In the DirectRay System the bucky contains the DirectRay Detector instead of the conventional film cassette Process of measuring the actual output of a machine as compared to its indicated or metered output General term referring to the maximum output of a machine or to the ability that a device possesses to sustain a load Device for holding X ray film during an exposure It is composed of two fluorescing intensifying screens in a metal and Bakelite holder Charge Coupled Device Name of the regulatory clearance needed to ship products to Europe Theoretical center of the X ray beam The central ray leaves the f
137. rails by roller bearings The LAT rails support the OTC components and allow their movement in the back and forth directions Electromagnetic brakes not shown these brakes are controlled by switches on the Console They hold the X ray tube stationary during operation They are located on the LAT rail and on the OTC Bearing Block OTC supports the X ray tube the Collimator and the Control Console It allows these components to move vertically using an integrated counterpoised spring Two pivot points at the base of the five element telescope allow the remaining components to rotate horizontally and vertically to preset detented positions X ray Tube the X ray tube contains an anode and cathode to generate and direct the X rays through the Collimator to the DirectRay Detector in the Bucky Collimator For an illustration of the OTC components refer to Figure 2 1 on page 2 5 General Information EPEX Omniflex IV System Service Manual Figure 2 1 Overhead Tube Crane Components TRANSVERSE CARRIAGE TRANSVERSE BRIDGE TELESCOPING TUBE ARM TUBE MOUNT CONTROL CONSOLE COLLIMATOR LONGITUDINAL CEILING RAILS 050845_1_1 General Information 2 5 Omniflex IV System Service Manual Radiographic Table Components The table components are e Patient Support Device supports up to 450 Ib and moves vertically left and right and fore and aft Note If you step on the up e Table Movement Con
138. raphy and Fluoroscopy R F Radiological Society of North America RSNA Radiology Information System RIS Radiopaque Radiopharmaceuticals RAM Rare Earth Materials Recumbent REM Resolution Resolving Power RIS Glossary EPEX Omniflex IV System Service Manual Del digital radiography system designed to optimize the DirectRay technology A unit that measures radiation in terms of the absorbed dose For radiologic procedures it is equivalent to the REM A branch of radiology that deals with the therapeutic applications of radiant energy Large doses of radiation are used to treat cancer by killing cancer cells This treatment is not usually part of a radiology department and treatment is given by physicians who are specialized in this field radiation oncologists X ray system that shows the workings of the gastrointestinal GI tract Diseases and abnormalities of the GI tract such as cancers ulcers tumors and obstructions can be diagnosed with R F imaging Largest scientific society of radiologist and medical physicists In a hospital the computer system that tracks patient demographic information visit information and other patient records Tissue or material that absorbs X rays and appears bright on a radiograph Basic radioactively tagged compound necessary to produce a nuclear medicine image also referred to as tracer Random Access Memory Phosphors are identified in the periodic tab
139. rn to the Generator Setup menu if you have no further changes to make choose Exit again 4 4 Adjustments and Calibration EPEX Omniflex IV System Service Manual Generator Setup Menu Receptor 1 Setup Note Do not use the default The Receptor Setup menus allow each of the image receptors to be settings programmed as defined in the following table Receptor Properties Menu Tab Name Receptor 1 Setup Receptor Number 1 1 Receptor Enable On 2 Tomo Enabled Off 3 Fluoro Enabled Off 4 Serial Enabled Off 5 Auto Focus Off 6 Memory Off 7 Tube 1 8 Tomo Back Up Time 2500 9 Fluoro Hangover 30 10 Rad Hangover 0 11 Last Image Hold ms 40 12 Interface Options 0 13 Functional Options None Adjustments and Calibration 4 5 EPEX Omniflex IV System Service Manual The following is an example Receptor 1 Setup screen Receptor Setup Term DKO0_004 tif Definition Tomo Fluoro Serial Memory Fluoro Hang RAD Hang Last Image Hold Enables or disables tomographic operation Enables or disables fluoroscopic operation Allows repeated serial X ray exposures without the need to re prep after each exposure Normally used with serial film changers NO is disabled Defines the default techniques when a receptor is chosen YES The chosen receptor remembers its last techniques These techniques are displayed when that receptor is re chosen NO The chosen receptor does not remember the last te
140. rovided no pending error A status codes READOUT_ SCAN_ERROR COMPLETED M DRSTATE DRSTATE _ INITIALIZING ARRAY DHSTATE READOUT RESETTING ARRAY EXPOSE_PERIOD_OVER UNRECOVERABLE _ ERROR ACK_ERROR DRSTATE_ READY_FOR_EXPOSE A DRSTATE_ UNRECOVERABLE_ ERROR MC20_114 CDR Diagnostics and Troubleshooting EPEX Omniflex IV System Service Manual Accessing Tail Log Files Error log files are accessed using the DROC Task Launcher Error log files are organized by module To access the end of the log use the Start Tail Log To access the entire log file use the Start More Log For example the end of the list of errors concerning DICOM printing are accessed through the Start Tail Log Fatal error events are clearly logged as fatal Any tasks that cannot continue processing as a result of the error are also indicated The following screen shows the DROC Task Launcher with Start Tail Log indicated Task Launcher E E Task Launcher Version DROC_ATP_V1 5 0 2 Patches Build Date Thu Jun 14 13 41 37 EDT 2001 View User apps drocCDP lt no domain gt Launch Config tmp Launch cfg 1325 JDK HOME opt java jdk1 1 6 04 PRJ TOPDIR opt linx mp START TASKS START TASKS AND TAILS START TAILS KILL TAILS KILL ENABLED KILL ALL Diagnostics and Troubleshooting 1 RMS Server 2 prestart 001 3 msgserver_001 4 rados 001 5 mwiquery 001 6 pdevdr 001 7 xd_001 8
141. s Live electrical terminals are deadly ensure that line disconnect switches are opened and other appropriate precautions are taken before opening access doors removing enclosure panels or attaching accessories Do not remove high voltage cables from the X ray tube housing or high tension Generator and or access covers from the Generator until the main and auxiliary power supplies have been disconnected Failure to comply with the foregoing may result in serious or fatal injuries to the operator or those in the area Safety Information Mechanical EPEX Omniflex IV System Service Manual The following are mechanical safety precautions e Keep fingers hands and tools clear of moving parts Unless specifically instructed otherwise do not operate the equipment with covers or access panels removed e Route cables properly to eliminate tripping hazards Safety Warnings and Cautions General Use Warnings WARNING A WARNING A WARNING Field Warnings A WARNING A WARNING Safety Information Federal law restricts this device for sale or use by or on order of a physician or properly licensed practitioner Only qualified personnel may operate the EPEX Omniflex IV System equipment Operation of the equipment by persons who have not been trained or who are unfamiliar with the EPEX Omniflex IV System s functions and controls may cause serious injury to the patient serious injury to the operator or equipmen
142. s installation maintenance and calibration forms Appendix D Field Replaceable Units Lists the names and part numbers for the most commonly field replaced components Appendix E System Wiring Diagrams Contains EPEX Omniflex IV System wiring diagrams A glossary follows Appendix E xiii EPEX Omniflex IV System Service Manual Conventions Used in This Manual This manual uses three types of special messages to emphasize information or point out potential risks to personnel or equipment A sample of each message type follows Note Notes provide additional information such as expanded explanations hints or reminders Cautions point out procedures that you must follow precisely to avoid damage to equipment loss of data or corruption of files in software applications CAUTION Warnings point out procedures that you must follow precisely to avoid injury to yourself or others WARNING xiv About This Manual Chapter 1 Safety Information Personnel operating and maintaining the equipment should receive EPEX Omniflex IV System technical training and be thoroughly familiar with all aspects of its operation and maintenance To ensure their safety all users should read this chapter carefully before using the system Additionally to promote safety awareness Service Engineers should periodically review the basic precautions outlined in this chapter Contents uci 1 2 Elec
143. service manuals for the following setup and calibration procedures Horizontal Leveling for the X ray Tube 0 Degree Rotational Adjustment for the X ray Tube e Vertical Drive Chain Adjustment for the OTC Horizontal Source Image Distrance HSID Adjustment Refer to the A B and C detent setup drawings in Figure 4 1 on page 4 23 Figure 4 2 on page 4 24 and Figure 4 3 on page 4 25 SID Potentiometer Adjustment Continuous SID Sensing The position sensing potentiometers must have 1 K resistance and linearity equal or better than 1 It is also very important that the potentiometer is used for at least 7596 of its total travel 75 Q for the total travel It is not necessary to set the potentiometer in the way that in a particular position of the movement the resistance has a particular value in fact it is enough that the minimum resistance of the potentiometer is less than 100 Adjustments and Calibration EPEX Omniflex IV System Service Manual To correctly position each potentiometer the following are the minimum resistance positions Tube Vertical Travel When the tube is in its lower limit stop close to floor the resistance must be less than 100 Bucky Vertical Travel When the Bucky is in its lower limit stop close to floor the resistance must be less than 100 Q Light Field Alignment X ray Tube Travel Limits Initialization Manual Mode Vertical Speed Adjustment Wall Mode Tracking Cali
144. stem Controller I O Board Verify HV control Reset calibration of HV for zero offset and gain Replace DirectRay Controller Ensure cables are properly connected Review error log file Test HV feedback has decayed 20V within 2 seconds Test erase lights on DirectRay Controller Run initialize readout sequence and check for EG amp Gor gate failure Check if reset due to watchdog timeout Verify internal temperature not exceeded threshold Override power on test failure 7 15 EPEX Omniflex IV System Service Manual Table 7 3 Troubleshooting System Problems Symptom Possible Cause s Recommended Action Filament Failure Failure to satisfy logic requests AEC Failure Rotor Failure Image Preview Error Condition Collimator Failure Unacceptable Preview Image Output Device Error Previous image printing instead of current image Tower Moving the Wrong Way 7 16 Check WAMI connections Replace X ray tube Check System Controller Board Check Remote ON OFF Board Check Power Supply Board Check I O Board Check System Controller Motherboard Timer error Ensure proper commands are sent to the Starter by checking Pins on GITB2 Pin 4 Rotor ON Interlock Pin 6 Rotor Break Pin 9 high Rotor ON Pin 9 and Pin 11 high High Speed Pin 9 and Pin 11 low Break Pins 4 9 11 zero volts equals Command Clean out the old database using command mprun Rdow Make
145. t WARNING gt WARNING The following parts must be returned to Del e Caster Bars from the Radiographic Table e Drilling Plate Leveling Plate The following warnings must be complied with before installation begins Failure to comply with these warnings may cause serious or fatal bodily injury and degrade the unit s safety level Ensure that the construction and load capacity of the ceiling are sufficient for the installation of this equipment Ensure that the central ground terminal of the room has a resistance in accordance with the regulations in force Ensure that the room line input is protected by means of a differential breaker calibrated for a maximum leakage current of 30 mA Ensure that the room emergency circuit is present and designed in accordance with the regulations in force Ensure that the walls of the room have been prepared to prevent the emission of scatter radiation into adjacent areas usually the walls are lined with lead Also ensure that The floor is level Aqualified facility official approves the room before installation begins e There is sufficient clearance between the equipment and the walls and doors and so on Installing the System Hardware EPEX Omniflex IV System Service Manual Figure 3 1 Typical Site Planning Drawing ulljp4 qe opos pos 32efoid a ed padi ing wei np PS SRL
146. t including any components or accessories Omniflex IV System Service Manual Safety Symbols 1 6 e TP 9 The following safety related symbols are found on the equipment To avoid injury learn to recognize them Radiation Power Off used with the DirectRay Console UPS Power On used with the DirectRay Console UPS Ethernet Connection Twisted Pair Ethernet Connection Explosive Gas flammable Attention Read the CAUTION or WARNING statement that follows Non Anesthetic Proof Universal Interface Connection Identifiers Sound Earphones Safety Information Safety Information ma pismo at Be C 0 Q EPEX Omniflex IV System Service Manual DirectRay Detector Orientation Identifier on the Bucky Protective Earth Ground Hazardous Voltage Power On Indicator Hard Drive Standby Switch used with CPU On Line Indicator used with X ray Generator switch at DirectRay Console Off Line Indicator used with X ray Generator switch at DirectRay Console Prep Exposure Switch X ray Expose Switch Do Not Immerse In Liquid This product contains no field serviceable parts 1 7 Omniflex IV System Service Manual Special Cleaning Instructions Lifting Warning One or more of the following regulatory symbols are found on the equipment SSIF t Us UL Classified Device
147. t damage The EPEX Omniflex IV System includes no user serviceable parts For service assistance contact Del TheEPEX Omniflex IV System produces ionizing radiation Operators must meet all state and local requirements and regulations The DirectRay Detector may only be operated in an area that is located beyond the 20 gauss limit Operating the unit within the magnetic fields that are higher than this limit may cause the unit to malfunction resulting in operator or patient injury Omniflex IV System Service Manual Electrical and Flammable Warnings The DirectRay Console component of the EPEX Omniflex IV System may not be located in the patient environment WARNING The EPEX Omniflex IV System and associated cables must not be operated in the presence of moisture gt WARNING To avoid excessive product leakage currents and to maintain product compliance to medical protective earthing and grounding requirements the DirectRay Console s power cord must be connected directly to a hardwired ac mains receptacle Under WARNING no circumstances should the DirectRay Console s power cord be connected to a multiple receptacle extension device that also supplies power to other electrical hardware that is electrically connected to the EPEX Omniflex IV System Ensure that earth grounding connections between the components and the building are maintained at all times The components include DirectRay Detector Overhead
148. te This is done so that you will be able to see a field size greater than the DirectRay Detector size Take an exposure at 70 kVp and 8 mAs Accept the image View the image in DRIVEL Using the measure function measure the size of the X ray field Note The measurement should be set to 1 greater than indicated 0 5 This accuracy is to ensure full coverage of the DirectRay Detector If this measurement is not correct refer to the OTC or Collimator service manuals that came with the system for the adjustments Adjustments and Calibration 4 35 EPEX Omniflex IV System Service Manual Checking the Size of the X ray Field to Collimator Indicated Size at 180 cm To check the size of the X ray field to Collimator indicated size at 180 cm Step Action 1 Set the Collimator blades to 18 x 14 indicated on the Collimator at 180 cm Note No 45 angle is necessary for this procedure Make an exposure at 70 kVp and 8 mAs Accept the image View the image in DRIVEL A Q N Using the measure function measure the size of the X ray field Note The measurement should be set to 2 of SID 6 If this measurement is not correct refer to the OTC or Collimator service manuals that came with the system for the adjustments 4 36 Adjustments and Calibration EPEX Omniflex IV System Service Manual Testing Calibration To test calibration use the following form LONG error A B 2 LAT error C D 2
149. tems e X ray image quality e Solaris 2 x fundamentals e System analytical skills e Network protocol and IP addressing e Software environments DOS Windows 95 98 or Windows NT nternet browsing e protocols About This Manual Organization About This Manual EPEX Omniflex IV System Service Manual Chapter 1 Safety Information Provides a description of the safety requirements for installing maintaining and servicing X ray equipment Chapter 2 General Information Provides a description of the EPEX Omniflex IV System components Chapter 3 Installing the System Hardware Provides steps for the installation process Chapter 4 Adjustments and Calibration Provides the steps for adjustments as well as a description of the calibration process Chapter 5 Preventive Maintenance Provides a preventive maintenance schedule and procedures for maintenance of the EPEX Omniflex IV System Chapter 6 Repair and Replacement Provides information on the location of instructions for the repair and replacement of EPEX Omniflex IV System components Chapter 7 Diagnostics and Troubleshooting Provides diagnostics and troubleshooting guidelines as well as guidelines for responding to error codes Appendix A Specifications Provides specifications for the EPEX Omniflex IV System components Appendix B Recommended Tools List of tools and equipment required for installation and or service Appendix C Forms Provide
150. the GenWare Generator Utilities icon found in the GenWare Utilities program group Following the momentary appearance of a splash screen the main window of the utility displays Setting the Communications Link To setup the GenWare console to communicate with the console it must know which communications port commonly known as the Com port the data is being transferred through This can be changed by clicking the com port settings button which is the icon at the right most side of the toolbar A window containing port settings displays For the 1 3 version of the GenWare Generator Utilities software only the com port can be changed Connect the Console Adaptor Cable from the com port on the computer to the nine pin interface on the console Place the console unit into a data wait mode Enter the programming mode of the console this requires a password Press the data link button The console displays the message waiting for data and is ready to receive commands 4 2 Adjustments and Calibration EPEX Omniflex IV System Service Manual Setting the Generator Utilities Utility Menu The Utility menu displays the following options Setting Time and Date Adjustments and Calibration Setting Time and Date Error Log Statistics Console To set the time and date Step Action 1 1 QN A Q N From the Utility menu choose Set Time amp Date To set the year choose Year and press the or
151. then press the DirectRay Console power up softkey 4 Verify the grid present LED is lit on the Bucky casting 5 Verify the grid oscillation with service test pushbutton on L F Bucky control board 6 Enter patient applications and verify proper Generator and portrait landscape communications Installing the System Hardware 3 33 EPEX Omniflex IV System Service Manual Step Action 7 Verify the following mechanical functions e OTC movement e Bucky arm movement e Bucky movement Table movement Tower rotation e Lateral Tower Bucky movement e Check all locks and brakes 8 Verify portrait landscape rotation is detected at the DirectRay Console and Collimator 9 Check that the Collimator is registering the correct distance 10 Configure and acquire low technique exposure and verify image preview Verify Room Warning Light If the room warning light has been installed and wired verify that the Warning Light turns on when the PREP position of the handswitch is engaged and stays on for the duration of any and all radiographic exposures until the PREP position is disengaged 3 34 Installing the System Hardware EPEX Omniflex IV System Service Manual Completing the EPEX Omniflex IV System Installation After equipment installation is complete the following actions must be taken e Adjust and calibrate the system Refer to Chapter 4 e Configure the system Refer to Chapter 4 in the DirectRay
152. tion Chamber 150 cc with NIST and or PTB traceable Calibration e mA mAs Meter with RMS Capability Light Strobe Adjustable Speed e Oscilloscope 100 mHz DSO such as Tektronix PN THS720 e Phantom e RMS Meter Fluke 76 or Fluke 87 Stand Test Quick set Stem Cable e Tachometer Reed Recommended Tools B 7 Appendix Forms This appendix provides the required forms for the installation calibration and preventive maintenance of the EPEX Omniflex System Contents Subject Page System Installati n iinei eos eed n edu C 3 System Calibration Forms od ey Reps eoe dete lik C 9 Preventive Maintenance Forms eee nemen C 23 C 1 EPEX Omniflex IV System Service Manual System Installation On the following page is the form required when installing the system using the procedures in Chapter 3 Forms C 3 Ooocoo EPEX Omniflex System Installation Checklist Delivery Completed Equipment Unpacked Return the Detector Array TempTale Positioning the Equipment Operator Console Installation XOOOOOODOOOOD Oooocoo Q Oooocovooo UPS Charged and Grounded CPU Connected Array Controller WAMI Monitor Cabled for DRAC and Operator Console CPU Keyboard Pointing Device Barcode Reader Modem Serial Extension Bar Remove Casters Seismic Anchoring if applicable ray System Installation Position Generator Verify Line Voltage Conf
153. tion 1 Assemble the frame see Figure 3 12 on the back of the generator cabinet using the four bolts P N SCR 00027 lockwashers and flat washers provided and a 4 mm Allen wrench Thread the upper bolts into the threaded holes in the back of the cabinet The lower two bolts will require a washer and nut on the backside inside the cabinet to secure them See Figure 3 13 Figure 3 12 Electronics Box Frame 3 20 Installing the System Hardware EPEX Omniflex IV System Service Manual Figure 3 13 Attaching the Frame 2 Align the collimator supply on the brackets at the top part of the electronics box bracket see Figure 3 14 Figure 3 14 Locating the Collimator Power Supply Box Installing the System Hardware 3 21 EPEX Omniflex IV System Service Manual 3 With the 7 16 socket ratchet extender along with the four bolts P N 200 0045 flat washers and lockwashers provided attach the power supply box Figure 3 15 Figure 3 15 Attaching the Collimator Power Supply Box 4 Attach the key switch provided with the collimator to the desired side of the lower back electronics box cover P N FAB 00112 with a wrench and the attached switch nut Figure 3 16 Figure 3 16 Attaching the key switch to the bottom cover 3 22 Installing the System Hardware EPEX Omniflex IV System Service Manual 5 Using a Phillips screwdriver and the screws P N 200 0029 provided attach the bottom cover
154. tricals eMe a lo la eMe 1 2 1 3 Safety Warnings and 1 3 Safety Symbols eei reete tree Nba eee eh Up eae Ap ava Ie Pe Yee ve LEER 1 6 Safety and Compliance use dictated eS 1 8 i octo dt at aide aut 1 9 Authorized EU 1 11 Identification Labels itt Rei den 1 12 Radiation cota aie po iets S 1 15 Radiation Protection Survey sisse coca tins aue aeo aee EUH UR e EISE SEEN Ee eo 1 17 Restrictions Oll Seo sce Lost ode aa S 1 17 General Electrical 1 2 A WARNING EPEX Omniflex IV System Service Manual The following are general safety precautions e Only personnel who have completed a Del training course for EPEX Omniflex IV System maintenance are qualified to remove the covers and repair or maintain the equipment Do not defeat or bypass built in equipment safety features e Observe all warnings and cautions stated or implied in the procedures e Follow all safety labels on the equipment Only a qualified trained Del Field Service Engineer or electrician should replace electrical components Only properly trained and qualified personnel should be permitted access to the internal part
155. trols a three switch foot pad that moves around and down controls at the the floor for the operator s convenience The first switch releases the same time the patient support brakes allowing the operator to manually move the table back forth left and right The second switch moves the table up The third switch either direction and there is noulang r of harming the moves the table down electronics e Tower controls veritcal movement of the Bucky It contains a counterweight to offset the Bucky s weight A ratchet along its face detents the Bucky vertically about every 0 3 in The Tower pivot point allows the Bucky to rotate around the Tower and detent in 45 increments Link Joint allows the Tower to rotate around the end of the table to the other side It detents in 45 increments Bucky houses the DirectRay Detector the Grid and the Ion Chamber The Bucky rotates around the Bucky pivot point 135 in either direction detenting in 15 increments Horizontal Track guides the Bucky Tower assembly in the back and forth direction e Operator Control Switches allows the operator to release several electro mechanical brakes to move the bucky to almost any position For the locations of the Table components refer to Figure 2 2 on page 2 7 2 6 General Information EPEX Omniflex IV System Service Manual Figure 2 2 Tower encloses Bucky Table Components eu 2 PF counter weight Patient Sup
156. ual Perform the X ray tube auto calibration routine Refer to Chapter 4 Verify the calibration of the Generator Refer to manufacturer s documentation L Perform any additional tests required by laws governing this installation 1 Perform a flat field exposure to check image quality Check cables inspect for cable sheath wear pinching or excessive bending 1 Perform mA Calibration L Perform DirectRay Controller Calibration L Preview image s _ Confirm modem is operational L Check software firmware revision levels for equipment Compare with records refer to Appendix C update listing if required Check logfiles for any unusual error messages Page 1 of 2 EPEX Omniflex Semi Annual cdr Semi Annual Preventive Maintenance Checklist System cont Inspection Comments Check for dust in DirectRay Console Check DirectRay Console fan Check all connections and make sure they are secure g Check the UPS Page 2 of 2 EPEX Omniflex Semi Annual 2 cdr Annual Preventive Maintenance Checklist System Inspection Open the Generator cabinet and examine the unit for any visible damage missing or loose ground connections oil leaks damaged cables and so on Comments Ensure that there are no obstructions blocking any of the ventilation holes or louvers on the Generator cabinet Inspect ground handswitch operator contols control cabl
157. ube 4 16 Tube conditioning or seasoning is particularly important for new tubes or tubes that have not been used for several days This should be performed on each X ray tube before attempting auto calibration as an unseasoned tube may not operate properly at higher kV values without arcing Refer to the X ray tube manufacturer s instructions if available for the tube conditioning or seasoning procedure If the X ray tube manufacturers instructions are not available use the procedure in this topic The Generator does X ray tube auto calibration at 50 kV 60 kV 70 kV 80 100 and 120 kV The tube normally needs to be seasoned before it can be operated at the higher voltages encountered during auto calibration With the GenWare utility tube seasoning is started by auto calibrating the KV stations up to and including part of the 70 kV station The tube is then seasoned at 70 kV Progressively higher kV stations are then auto calibrated and seasoned Finally the entire kV and mA range is auto calibrated then the tube is seasoned at the remaining high kV values Manually releasing the exposure button during auto calibration of a particular kV station in the following procedure prevents the Generator from attempting operation beyond that kV mA value Adjustments and Calibration Note Only low speed exposures are recommended for the seasoning exposures to prevent excessive heat build up in the housing from th
158. unter Balance Removal Tool EPEX Drill Guide For Table Base B 5 Metric Tools EPEX Omniflex IV System Service Manual The following is a list of the metric tools required Electrical Tools Wrench set combination 12 pt fractional metric 18 pcs Wrench set 10 pc midget metric combination wrench combo set Balldriver set 1 5 to 10 mm L wrench 9 pcs Nutdriver set 4 to 13 mm 10 pcs Wrench set 27 pcs ratchet w adapter std and metric Socket set 1 4 driver 10 pcs metric 4 to 13 mm Tape measure 30 ft standard and metric Gauge feeler Kit field service static dissipative w access Tap Set Wrench Set Allen Wrench Set Open End The following is a list of the electrical tools required B 6 3 8 in Cordless Hammer Drill 3 8 in Reversible Cordless Drill Hepa Vacuum 14 in Heavy Duty Circular Saw Hammer Drill With Cement Anchors Recommended Tools EPEX Omniflex IV System Service Manual Test Equipment The following is a list of the test equipment required e Antistatic Wrist Strap and Grounding Cord Sterling Static Protective Field Service Kit PN 662191 501 e Cable Coaxial e Cable Triaxial Computer Laptop DOS compatible Windows 95 or Windows 98 software Laptop Interface Cable e Keithley Triad Field Service kit Keithley PN 10100A e Dosimeter with kVp and Time Readout Filter Kit HVL Filter Pack Wide Range 50 kV to 150 kV on Chamber 15 cc with NIST and or PTB traceable Calibra
159. ve devices that support Storage Commit The Storage Commit function enables the archive device to send a message to the DirectRay Console accepting responsibility for the image The server sends these messages to the DirectRay Console Service which queues jobs for output devices Main DirectRay Console user interface application software Performs reclaim high water mark on the database How many images to be stored on the hard drive before overwriting files Diagnostics and Troubleshooting EPEX Omniflex IV System Service Manual Accessing Log Files in a Terminal Session Typically you will access log files using the Task Launcher window However you may need to view the ASCII logs in a terminal session window For example if you have logged in as apps and are running or have run Netscape you will not be able to view the logs using Task Launcher The log files are stored in the directory linx_mp logs To view the available log files enter the following command ls 1 0 log Additional Logs Accessible from a Terminal Session Daily reports are stored in the linx mp logs reports directory These reports include e Number of patients processed e Number of images accepted and rejected e Number of system reboots DirectRay Controller Log Files Stored on the DirectRay Console Every time the DirectRay Console is rebooted the DirectRay Controller log files are copied in Z compressed format to the linx_mp logs draclo
160. vice Manual Room Preparation 3 4 EPEX Omniflex IV System Installation Checklist 3 6 Unpacking Equipment c ooi oec fe 3 7 Positioning Equipment esas 3 9 Positioning the Generator 5 nineteenth eed oe 3 9 Positioning the DirectRay Console eere 3 11 EPEX Omniflex IV System Wiring Diagrams sees 3 11 Installing the DirectRay Console eene 3 11 Installing the Rails eee rre then qna Inn eee aurae 3 12 Checking the Ceiling Prepatatioti 3 12 Layout occ tete ta bte ar eet Mt Caton latte ui 3 13 Starting the OTC T stallatiQnaga rte e eques 3 18 Starting the Table Installation eene 3 18 Table to OTC Longitudinal Rail Alignment ess 3 18 Aligning the Table to OTC Longitudinal Rails 3 18 Finishing the OTC Installation 3 19 X ray Tube and Collimator Installation esses 3 19 Balancino the OTC Lus SNe SEALS eee ee 3 19 Finishing the Table Installation eee 3 19 Assembling the Electronics Box on the 3 20 Cabling the EPEX Omniflex IV System eere 3 25 Cable Contiections io cd ieee tpud icu 3 26 Cabling the
161. voltage at the main line fuses is at least 389 VAC If it isn t then refer to the Three Phase Primary Tap section in your generator service manual for direction Measure the line voltage across F4 and F6 on the driver auxiliary board in the HF power supply Record the result Note These fuses are located to the left of the main power supply ground on the large circuit board Verify that this voltage is 400 Vac 10 If the voltage meets the requirement write your initials on the form If the voltage does not meet the requirement the problem must be fixed before you continue with this procedure Switch OFF the mains power to the Generator Verify that there is no voltage present across any of the mains input phases If there is no voltage present across any of the mains input phases write your initials on form If there is voltage present across any of the mains input phases the problem must be fixed before you continue with this procedure Replace the safety cover on the main input fuse block Switch ON the mains and Generator Verify that the red LED DS1 located near the center of the Generator interface board is lit If the LED is lit write your initials on the form If the LED is not lit the problem must be fixed before you continue with this procedure Installing the System Hardware 3 31 Initial Volt Measurement Main Line Fuse Voltage Vac L1 phase to L 2 phase L1 phase to
162. with the carrier If the carrier is not notified within 15 days of delivery the carrier cannot be held responsible Note Have a camera To verify the receipt of all parts prior to installation of the system available to photograph any unpack the items as follows shipping damage Beware of sharp edges splinters pinch points exposed nails and staples when unpacking Wear leather gloves WARNING Step Action 1 Take the box shells off and uncrate in truck or loading dock area 2 Refer to the packing list and verify that all components are present 3 Visually check each component for damage 4 Refer to the DirectRay Shipping and Handling Guide PN 649947 000 for important information regarding the DirectRay Detector It is important to follow the directions for unpacking the DirectRay Detector and DirectRay Controller provided in the shipping and handling guide CAUTION Step Action 5 Return the TempTale temperature and humidity recorder from the DirectRay Detector packing to the Del Installation Coordinator 6 Unpack the OTC and move it to the room N Use two people to move the OTC CAUTION Step Action 7 Unpack the table Refer to the EPEX Radiographic Table Service Manual 8 Move all crates to either the room or to the storage area Installing the System Hardware 3 7 EPEX Omniflex IV System Service Manual
163. xample 2 Within 2 ft of the table base location move the OTC along the entire length of the longitudinal rails and mark the line where the plumb bob ran Figure 3 10 Attaching the Plumb Line 3 18 Installing the System Hardware EPEX Omniflex IV System Service Manual Step Action 3 Measure the distance of the marked plumb line to the table center line or table base edge 4 Ensure the distance is within 1 16 in for the entire length of the table 5 To install the table refer to the EPEX Radiographic Table Service Manual Finishing the OTC Installation Install the following subsystem components by referring to their service manuals and interconnect diagrams e X ray Tube e Collimator e Attach and run the OTC cables X ray Tube and Collimator Installation Refer to the OTC service manual that came with the system Balancing the OTC Refer to the OTC service manual that came with the system Finishing the Table Installation Using the procedures in the EPEX Radiographic Table Service Manual e Place and secure the table Install the Tower Assembly Installing the System Hardware 3 19 EPEX Omniflex IV System Service Manual Assembling the Electronics Box on the Generator Figure 3 11 Basic Asssembly Diagram of Electronics Box on the Back of the Generator X Uh Xy YS Sh uw Ww To assemble the electronics box Step Ac
164. ystem performance and require operator intervention or notification An error may or may not be recoverable and may be indicative of a system failure An unsuccessful recovery can be considered a Fatal error Another example of an error is loss of communication with the currently selected DirectRay Detector Errors and warnings are further categorized into sticky and non sticky Sticky Errors or Warnings remain in the system after they have been read by the system controller The DirectRay Controller subsystem that detected and posted the error or warning may optionally remove the error or warning condition if it has been able to recover from the problem For example a sticky error would be the incorrect operation of the high voltage system Non Sticky Errors or Warnings are removed from the system once they have been read by the system controller If the condition that caused the initial error or warning persists the error may be repeatedly re posted after reading For example a non sticky error or warning will be generated if communication is lost with the attached DirectRay Detector 7 4 Diagnostics and Troubleshooting EPEX Omniflex IV System Service Manual Error and Warning Reporting Errors in the DirectRay Controller are reported over the SCSI system control interface Errors reported over the system control interface are classified into two types Command Errors are errors related to commands sent over the

EPEX Omniflex Service Manual.book

Contents

Download Pdf Manuals

Related Search

Related Contents