Del Medical EPEX Omniflex IV Service Manual Download Page 197

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AEC kVp Compensation for Film Screen 2

EPEX Omniflex kVp Compensation for Film 2.cdr

Pass: ________

(requirement: Delta 200 to the acquired DV (Mean) at 65 kVp.)

Phantom
Thickness

AEC ms

1.5 in.

4.5 in.

1.5 in.

3 in.

DV (Mean)

Reference

6 in.

N/A

50 75

110

120

Delta

kVp

N/A

6.15

4.10

3.75

5.78

5.15

2.82

2.18

Summary of Contents for EPEX Omniflex IV

Page 1: ...Direct Ray EPEX Omniflex IV System Service Manual P N 8000 EPEXOMNISM Revision A August 8 2005 EPEX Omniflex IV...

Page 2: ...served 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 p...

Page 3: ...ed in This Manual xiv Chapter 1 Safety Information General 1 2 Electrical 1 2 Mechanical 1 3 Safety Warnings and Cautions 1 3 General Use Warnings 1 3 Field Warnings 1 3 Electrical and Flammable Warni...

Page 4: ...ions on Use 1 17 Chapter 2 General Information What Is the EPEX Omniflex IV System 2 2 Major System Components 2 4 Overhead Tube Crane OTC Components 2 4 Radiographic Table Components 2 6 DirectRay Co...

Page 5: ...e to OTC Longitudinal Rails 3 18 Finishing the OTC Installation 3 19 X ray Tube and Collimator Installation 3 19 Balancing the OTC 3 19 Finishing the Table Installation 3 19 Assembling the Electronics...

Page 6: ...4 X ray Tube Calibrations 4 16 Conditioning the X ray Tube 4 16 X ray Tube Warm Up 4 18 X ray Tube Calibration Procedure 4 19 Collimator System Calibration 4 20 System Adjustments and Calibration 4 20...

Page 7: ...41 Connecting the mAs Meter 4 42 Adjusting Automatic Exposure Control AEC 4 43 Introduction 4 43 AEC Limitations Minimum Response Time 4 43 AEC Limitations Maximum Exposure Times 4 44 AEC Board 4 44 P...

Page 8: ...minal Session 7 9 DirectRay Controller Log Files Stored on the DirectRay Console 7 9 Responding to Error Messages 7 10 Troubleshooting System Problems 7 14 Appendix A EPEX Omniflex IV Specifications S...

Page 9: ...Tools B 2 Metric Tools B 6 Electrical Tools B 6 Test Equipment B 7 Appendix C Forms System Installation C 3 System Calibration Forms C 9 Preventive Maintenance Forms C 23 Appendix D Field Replaceable...

Page 10: ......

Page 11: ...Generator Radiographic Table Intended Use 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 Di...

Page 12: ...prerequisites or have equivalent experience EPEX Omniflex IV System Radiation safety Electronics including troubleshooting skills X ray theory X ray Generator systems X ray image quality Solaris 2 x f...

Page 13: ...f 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 Diagn...

Page 14: ...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 precis...

Page 15: ...carefully before using the system Additionally to promote safety awareness Service Engineers should periodically review the basic precautions outlined in this chapter Contents Subject Page General 1 2...

Page 16: ...Field Service Engineer or electrician should replace electrical components Only properly trained and qualified personnel should be permitted access to the internal parts Live electrical terminals are...

Page 17: ...ment 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 inj...

Page 18: ...are 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 Dir...

Page 19: ...h care Excessive use of the keyboard and mouse or trackball may result in repetitive strain injury Cleaning Cautions Do not spray cleaning solution directly onto the equipment Instead moisten a cloth...

Page 20: ...njury 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 fl...

Page 21: ...d 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 swit...

Page 22: ...he 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 regulati...

Page 23: ...ements 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 R...

Page 24: ...ces 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 workstati...

Page 25: ...ormation 1 11 Authorized EU Representatives The manufactures or parts and subsystems in the EPEX Omniflex Overhead Tube Crane are represented in the European Union by the following Villa Sistemi Medic...

Page 26: ...manufacture The model number and serial number of the component The certification label also states that the component complies with either 21CFR Subchapter J or the applicable DHHS standards under th...

Page 27: ...are shown in Figure 1 2 Figure 1 2 Location of the DirectRay Console Identification Labels OIL TANK PART NO SERIAL NO MFG DATE HV GEN PART NO Located inside door on front of tank MANUFACTURED FOR HOLO...

Page 28: ...I SUBCHAPTER J OF THE US CODE OF FEDERAL REGULATIONS Product Description Model Designation Catalog Number Serial Number By Hologic Inc 35 Crosby Drive Bedford Massachusetts 01730 MC20_226 cdr Manufac...

Page 29: ...otection for Energies up to 10 MEV Equipment Design and Use National Bureau of Standards Handbook No 76 Medical X ray Protection up to Three Million Volts Refer to NCRP Report No 33 Current recommenda...

Page 30: ...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 IV System components as...

Page 31: ...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 T...

Page 32: ...ation 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 De...

Page 33: ...his chapter provides general information about the EPEX Omniflex IV System Contents Subject Page What Is the EPEX Omniflex IV System 2 2 Major System Components 2 4 Compatibility Certified Components...

Page 34: ...men skull and orthopedic skeletal extremity examinations The versatility of the radiographic system operation provides for the following quickly and efficiently Accessing and or entering of patient de...

Page 35: ...consists of the following components X ray Generator Overhead Tube Crane OTC Collimator X ray Tube Radiographic Table Automatic Exposure Control DirectRay Detector DirectRay Console Image Preview Moni...

Page 36: ...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 lo...

Page 37: ...EPEX Omniflex IV System Service Manual General Information 2 5 Figure 2 1 Overhead Tube Crane Components...

Page 38: ...ch moves the table down Tower controls the 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...

Page 39: ...un software calibration and diagnostics 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...

Page 40: ...ents DK10_031 eps Image Preview Monitor Bar Code Reader Keyboard Pointing Device Prep Expose Switch OFF ON AA CD RD SD TR CS ARQ FAX 1 0 J1 J3 J5 J7 J9 J2 J4 J6 J8 J1 0 J1 1 J1 2 Modem UPS DirectRay C...

Page 41: ...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...

Page 42: ...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 an...

Page 43: ...line adjusting transformer in the lower Generator cabinet Figure 2 5 Input Power System Earth Grounding Map The ground impedance from the central grounding point to any subsystem peripheral must not...

Page 44: ...e 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 Figure...

Page 45: ...ponents compatible with the EPEX Omniflex IV System Component Model Number DirectRay Console DROC R E 120 230 Certified Component Generator various DirectRay Detector DR0033 DirectRay Controller DR001...

Page 46: ...tem 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...

Page 47: ...P N 4361668 Rev 01 1998 Complete Kodak RadWorks Wrkst Store Applicare DCM 1007 002 00 002 Ver 2 1a Aug 1999 Complete Kodak Cemax Icon Archive Wrkst Store Macintosh In Progress Kodak Cemax Icon Archive...

Page 48: ...Printer Print Fuji Network Print Server FN PSS551 Oct 1999 3rd Edition Complete Kodak 1120 Printer Print DICOM Print Server 9410 2E0383 Rev D SW V 3 1 Feb 2000 In Progress Kodak 2180 Printer Print DI...

Page 49: ...9 EPEX Omniflex IV System Wiring Diagrams 3 11 Installing the DirectRay Console 3 11 Installing the Rails 3 12 Starting the OTC Installation 3 18 Starting the Table Installation 3 18 Finishing the OT...

Page 50: ...ables are properly bundled for your site layout Safety Equipment The Overhead Tube Crane OTC consists of heavy rails cables cable carriages and heavy equipment that hang from the ceiling While install...

Page 51: ...ill 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...

Page 52: ...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...

Page 53: ...EPEX Omniflex IV System Service Manual Installing the System Hardware 3 5 Figure 3 1 Typical Site Planning Drawing HOLOGIC MEDICAL CENTER X RAY ROOM 4 EQUIPMENT PLAN...

Page 54: ...le the Electroncs Box on the Generator Verify Line Voltage Configure Generator Mains Check Secure Board Seating Verify Internal Connections Install High Voltage Transformer Assembly outside U S only S...

Page 55: ...sharp edges splinters pinch points exposed nails and staples when unpacking Wear leather gloves It is important to follow the directions for unpacking the DirectRay Detector and DirectRay Controller...

Page 56: ...EPEX Omniflex IV System Service Manual 3 8 Installing the System Hardware Figure 3 2 Typical EPEX Omniflex IV Room Layout...

Page 57: ...y 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 ro...

Page 58: ...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 ma...

Page 59: ...nnected 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 install...

Page 60: ...or 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 i...

Page 61: ...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...

Page 62: ...re 3 7 Setup Detent B B SETUP DETENT AND SWITCH CAM POSITIONS TABLE CENTER LATERAL SWITCH CAM TABLE CENTER LATERAL DETENT TABLE C L 40 44 B SETUP SID DETENT 72 B SETUP SID SWITCH CAM WALL B SETUP BUCK...

Page 63: ...TER LATERAL SWITCH CAM TABLE C L 40 44 B SETUP SID SWITCH CAM TABLE CENTER LATERAL DETENT DK20_139 cdr Step Action 1 Review and thoroughly understand the final site planning drawing and the A B and C...

Page 64: ...ne 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 ma...

Page 65: ...IV System Service Manual Installing the System Hardware 3 17 Figure 3 9 Radiographic Table to OTC Layout Dimensions 5 0 C B A 2 7 7 3 4 8 11 0 Table C L 1 2 Radiographic Table to OTC Layout Dimentions...

Page 66: ...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...

Page 67: ...rvice 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...

Page 68: ...electronics box Figure 3 12 Electronics Box Frame Step Action 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...

Page 69: ...e System Hardware 3 21 Figure 3 13 Attaching the Frame Figure 3 14 Locating the Collimator Power Supply Box Frame Back of Generator Frame Bolts 2 Align the collimator supply on the brackets at the top...

Page 70: ...tch to the bottom cover 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 4 Attach the key sw...

Page 71: ...tach the bottom cover 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 7 Using a small slotted screwdriver at...

Page 72: ...s 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...

Page 73: ...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 stat...

Page 74: ...e housing to the generator Failure to make this ground connection may result in intermittent operation and or exposure errors Wiring the Generator Cabinet Ground To wire the cabinet ground Refer to th...

Page 75: ...in the NORMAL position to enable switching the Generator on For these switch locations refer to Figure 3 19 Figure 3 19 Location of Lockout Switch and Local ON OFF Switches Safety Interlocks It is str...

Page 76: ...ess 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...

Page 77: ...tandards 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 excee...

Page 78: ...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...

Page 79: ...f the voltage does not meet the requirement the problem must be fixed before you continue with this procedure 7 Switch OFF the mains power to the Generator 8 Verify that there is no voltage present ac...

Page 80: ...se to L 2 phase L1 phase to L 3 phase L 2 phase to L 3 phase Vac Main Line Fuse Voltage L1 phase to L 2 phase Vac Driver Auxiliary Board Voltage Vac F4 to F6 Vac Verify that the voltage is 400 Vac Ini...

Page 81: ...rical adjustment or check extreme caution should be exercised to prevent personal injury Wear insulated gloves when access to energized components becomes necessary To perform the initial power up WAR...

Page 82: ...and all radiographic exposures until the PREP position is disengaged Step Action 7 Verify the following mechanical functions OTC movement Bucky arm movement Bucky movement Table movement Tower rotatio...

Page 83: ...vice Manual 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 f...

Page 84: ...EPEX Omniflex IV System Service Manual 3 36 Installing the System Hardware...

Page 85: ...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 o...

Page 86: ...and the 9 pin port J11 of the Generator CPU board Starting GenWare Console To begin the program double click the GenWare Generator Utilities icon found in the GenWare Utilities program group Following...

Page 87: ...ction 1 From the Utility menu choose Set Time Date 2 To set the year choose Year and press the or buttons 3 To set the month choose Month and press the or buttons 4 To set the day choose Day and press...

Page 88: ...Generator exposure count You can reset counters from this screen 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 retu...

Page 89: ...ge receptors to be programmed as defined in the following table ReceptorProperties Menu Tab Name Receptor 1 Setup Receptor Number 1 1 Receptor Enable On 2 Tomo Enabled Off 3 Fluoro Enabled Off 4 Seria...

Page 90: ...ast techniques These techniques are displayed when that receptor is re chosen NO The chosen receptor does not remember the last techniques used on that receptor The techniques default to the last used...

Page 91: ...he Installation Coordinator and an additional copy printed and filed on site Interface Opts Selects pre defined interface options 0 None 1 InfiMed digital 2 ATS ESI digital 3 Gilardoni digital pulsed...

Page 92: ...he default setting is 500 AEC Back Up ms Sets the maximum backup ms The default setting is 800 AEC Back Up Mode Defines the AEC backup mode to be used FIXED The Generator will determine the maximum AE...

Page 93: ...or Defaults 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 Defaul...

Page 94: ...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...

Page 95: ...lowing table Output Menu Tab Standby Prep Gen Ready Rad Exp Fluoro Bucky 1 Select Off Off Off On N A Bucky 2 Select Off Off Off Off Off Bucky 3 Select Off Off Off Off Off Tomo Bucky 4 Select Off Off O...

Page 96: ...sing 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...

Page 97: ...Ware software If the values are incorrect reenter the correct values in 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 Densi...

Page 98: ...er 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 Ion Chamber or Solid State S S cha...

Page 99: ...m Screen 1 2 and 3 according to the table shown below 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 M...

Page 100: ...everal 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 man...

Page 101: ...A 2 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 3 Restart the auto calibration...

Page 102: ...r 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 operation of the Generator When you reen...

Page 103: ...EPEX Omniflex IV System Service Manual Adjustments and Calibration 4 19 9 When auto calibration is complete press Close to exit the tube auto calibration menu The Generator Utility menu displays...

Page 104: ...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 SI...

Page 105: ...Reading Calibration Collimator Differential Vertical SID Adjustment SID Display Calibration Central Beam and X ray to Light Field Adjustments The following adjustments and calibrations must be perfor...

Page 106: ...al rails within 1 16 in 4 Ensure that the X ray tube port is level and perpendicular to the ground 5 Use a calibrated digital level on the X ray tube port to ensure that the tube is level to within 0...

Page 107: ...tents for Position A A SETUP DETENT AND SWITCH CAM POSITIONS TABLE CENTER LATERAL DETENT 40 44 A SETUP SID SWITCH CAM TABLE CENTER LATERAL SWITCH CAM 72 A SETUP SID SWITCH CAM TABLE C L WALL A SETUP B...

Page 108: ...Detents for Position B B SETUP DETENT AND SWITCH CAM POSITIONS TABLE CENTER LATERAL SWITCH CAM TABLE CENTER LATERAL DETENT TABLE C L 40 44 B SETUP SID DETENT 72 B SETUP SID SWITCH CAM WALL B SETUP BU...

Page 109: ...ustments and Calibration 4 25 Figure 4 3 Detents for Position C 72 C SETUP SID SWITCH CAM C SETUP DETENT AND SWITCH CAM POSITIONS TABLE CENTER LATERAL SWITCH CAM TABLE C L 40 44 B SETUP SID SWITCH CAM...

Page 110: ...ds 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 Ac...

Page 111: ...ol until it is level Step Action 3 Adjust the Collimator shutters so that the edges of the light field roughly coincide with the rectangular outline on the Collimator tool 4 Initiate exposure at appro...

Page 112: ...y 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 DK20_069 cdr Correct Alignment Within 5 o Misaligned by 1 5o Mi...

Page 113: ...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 2...

Page 114: ...he rectangular outline of the Collimator test tool Note Ignore the Collimator crosshair 3 Initiate an exposure at approximately 60 kVp and 8 mAs 4 Accept the image 5 View the image in DRIVEL If the X...

Page 115: ...able errors at different distances refer to Table 4 2 If the light field is not aligned go to step 7 Table 4 2 X ray to Light Field Alignment Tolerance Distance Between Source and Light Field Bucky Ex...

Page 116: ...tion 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 ca...

Page 117: ...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 Telesco...

Page 118: ...p and 8 mAs 4 Accept the image 5 View the image in DRIVEL 6 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 accur...

Page 119: ...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 3 Take an exposure at 70 kVp and 8 mAs 4 Acce...

Page 120: ...e Collimator blades to 18 x 14 indicated on the Collimator at 180 cm Note No 45 angle is necessary for this procedure 2 Make an exposure at 70 kVp and 8 mAs 3 Accept the image 4 View the image in DRIV...

Page 121: ...ed size 25 mmLongitudinal x 20 mmLateral Light field size _______ cmLONG x _______ cmLA T X ray field size _______ cmLONG x _______ cmLA T Light to X ray center center error _______ mm Crosshair toX r...

Page 122: ...ctor 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...

Page 123: ...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...

Page 124: ...er 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 instructi...

Page 125: ...vider 5 Connect the other end of the cable to the dose meter 6 Connect the dose meter to the laptop 7 Take the measurements 8 To uninstall reverse steps 1 to 6 Step Action 1 Turn the Generator power o...

Page 126: ...d is issued until the kV has actually decreased to the point that X rays are no longer produced The following illustration depicts this graphically Figure 4 8 Relative Timing of AEC Ramp vs Exposure C...

Page 127: ...ot adjust unless the AEC preamp calibration is out of range AEC board input assignment Ch 1 J1 J11 The R1 potentiometer is used for channel 1 AEC gain adjustment The R11 potentiometer is used for chan...

Page 128: ...ways 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 p...

Page 129: ...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 1...

Page 130: ...200 of each other and respective to 65 kVp data point in the table 7 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...

Page 131: ...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 Scree...

Page 132: ...1 5 in 4 5 in 4 5 in 1 5 in 3 in DV Mean Reference 6 in 6 in N A 50 75 85 95 55 65 110 120 Delta kVp N A N A 6 15 4 10 3 75 5 78 5 15 2 82 2 18 2nd Iteration AEC kVp Compensation for Film Screen 2 EPE...

Page 133: ...Measure the mR at 110 kVp 100 mA 100 ms 10 mAs and non AEC 3 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 pro...

Page 134: ...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 14 For reference record the DV Mean in the digital image...

Page 135: ...ollimator 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...

Page 136: ...to Figure 4 10 19 Acquire an exposure 20 Record the milliseconds in the Verifying Ion Chamber Preamplifier Balance form in Appendix C A sample of the form is shown following this procedure 21 Adjust...

Page 137: ...EPEX Ion Chamber Balance cdr Pass ________ Grid Speed medium kVp 60 mA 25 Phantom 0 in Field Size auto Setup Balance Data Portrait Inverted 4 Rt Landscape 5 Rt Portrait AEC Detector s 1 2 3 Exposure m...

Page 138: ...EPEX Omniflex IV System Service Manual 4 54 Adjustments and Calibration...

Page 139: ...pairability 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 DirectRa...

Page 140: ...ns should be repaired immediately Observe the movement of the Radiographic Table as it is positioned for use Irregular movements or other malfunctions should be repaired immediately The Overhead Tube...

Page 141: ...o the Generator service manual Check cables inspect for cable sheath wear pinching or excessive bending Performthe X ray tube auto calibration routine Refer to Chapter 4 V erify the calibration of the...

Page 142: ...tenance EPEX Omniflex Semi Annual 2 cdr Semi Annual Preventive Maintenance Checklist System cont Comments Inspection Check for dust in DirectRay Console Check Console fan DirectRay Check all connectio...

Page 143: ...bstructions blocking any of the ventilation holes or louvers on the Generator cabinet Inspect ground handswitch operator contols control cables and strain reliefs for wear and pinching Check U arm cab...

Page 144: ...efer 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 ma...

Page 145: ...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...

Page 146: ......

Page 147: ...es the diagnostic and troubleshooting procedures for the EPEX Omniflex IV System Contents Subject Page Troubleshooting Overview 7 2 Troubleshooting Service Tools 7 3 Accessing Tail Log Files 7 7 Respo...

Page 148: ...s 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 informati...

Page 149: ...pe The top layer Netscape page is the default screen to service menus and files UNIX Toolbar Clicking on the main menu and moving the window reveals the common desktop environment A UNIX Toolbar is lo...

Page 150: ...em 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 err...

Page 151: ...ace 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 Communicati...

Page 152: ...EPEX Omniflex IV System Service Manual 7 6 Diagnostics and Troubleshooting The error and warning reporting system is illustrated in the following figure Figure 7 3 Error and Warning System...

Page 153: ...e 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...

Page 154: ...e which interfaces the DirectRay Console to the DICOM printers 9 pdevremstore_001 Service which interfaces the DirectRay Console to the DICOM store devices 10 itconvert_001 Service which interfaces th...

Page 155: ...y linx_mp logs To view the available log files enter the following command ls l 0 log Additional Logs Accessible from a Terminal Session Daily reports are stored in the linx_mp logs reports directory...

Page 156: ...Connect the mAs Meter 2 Connect the scope expose view kV and mA waveforms A1 DirectRay Detector Orientation Fault Orientation sensing signals crossed Check for SCSI errors 1 Verify Bucky has power 2...

Page 157: ...the DirectRay Console and the Generator Tube arcing Handswitch prematurely released 1 Released handswitch too early 2 Check the prep expose_ready signals going to the Generator and the prep_ready and...

Page 158: ...3A V600 Power Too High 1 Press RESET located in the radiography control group and try the exposure again 2 Check the 3 phase fuses and voltages 3 Check the rectifier output voltages 4A Boost Error St...

Page 159: ...8 second time available 3 Time out flag B2 Abort Exposure No mAs Handswitch let off too soon B3 X ray Switch Jammed Check the handswitch or wiring B5 mAs Not Reached and Time was Stopped Too low mA F...

Page 160: ...lly loaded Start TailLog on suspected error device DirectRay Controller Boot Failure Devices could be hung Enter Ctrl D at service keyboard enter password to access DirectRay Controller Service menu d...

Page 161: ...etector for recal Exposure Failed Bucky not in motion Communication failure Check control circuit Check WAMI Check System Controller Motherboard Check Remote ON OFF Board Check Power Supply Board Chec...

Page 162: ...database using command mprun Rdow Make dropdb Rados Process is detailed in the DirectRay Console Service Manual Collimator Failure If Collimator field size does adjust to panel orientation verify Col...

Page 163: ...ppendix A EPEX Omniflex IV Specifications This appendix details the EPEX Omniflex IV System specifications Contents Subject Page Subsystem Specifications A 2 Environment A 12 Installation Requirements...

Page 164: ...Detector 8 6 kg 19 lb DirectRay Controller 7 3 kg 16 3 lb Dimensions DirectRay Detector Width 46 7 cm 18 4 in Height 46 7 cm 18 4 in Depth 4 3 cm 1 7 in DirectRay Controller Width 49 5 cm 19 5 in Hei...

Page 165: ...ngitudinal Travel 3700 mm Ceiling Rails Lateral Travel 2230 mm Exploitation Area 4370 x 2950 mm Tube Vertical Travel 1600 mm Focal Spot Telescopic Axis Distance 432 mm Minimum Focal Spot Ceiling Dista...

Page 166: ...egative 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 Indi...

Page 167: ...stem Service Manual EPEX Omniflex IV Specifications A 5 Overhead Tube Crane Physical Specifications The outline of the Overhead Tube Crane is detailed in the following illustration Figure A 1 Overhead...

Page 168: ...EPEX Omniflex IV System Service Manual A 6 EPEX Omniflex IV Specifications The tube coverage area is illustrated in the following drawing Figure A 2 Tube Coverage Area...

Page 169: ...8 in Depth 49 cm 19 in Height 100 cm 39 in with monitor 150 cm 59 in without monitor Top Surface Width 84 cm 33 in Depth 56 cm 22 in Clearance 30 cm 12 in minimum on both sides 75 cm 30 in minimum in...

Page 170: ...epth 41 cm 16 in Height 145 cm 57 in Output 80 kV high frequency 100 mA 80 kVP 800 mA 100 kVP 500 mA 150 kVP 40 to 150 kVP 0 5 to 1000 mA Line Voltage Range 10 High Voltage Ripple 4 kVP 100 kVP typica...

Page 171: ...lex IV System Service Manual EPEX Omniflex IV Specifications A 9 X ray Generator Physical Specifications The outline of the X ray Generator is detailed in the following illustration Figure A 3 Generat...

Page 172: ...eed 3000 9000 rpm Anode Heat Storage Capacity 400 kHu Focal Spots 6 and 1 2 Anode Material RTM Target Diameter 101 6 mm Maximum Anode Cooling Rate 2 kHu sec Target Angle 13 5 Filament Operating Range...

Page 173: ...6 cm 10 in vertical top travel Rotation Bucky portrait landscape pivot 90 Bucky arm rotation 135 Tower rotation 180 Base assembly rotation 180 Electrical Input voltage 110 230 Vac Input frequency 50 6...

Page 174: ...nt 10 per hour Operating Temperature 10 to 35 C 50 to 95 F Maximum gradient 5 C 9 F per hour Relative humidity 10 to 80 non condensing Maximum gradient 10 per hour Maximum altitude 3 000 m 10 000 ft M...

Page 175: ...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...

Page 176: ...el 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 Fie...

Page 177: ...ntistatic 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 Hemo...

Page 178: ...ype Screwdriver Slot Large 5 16 in Seizers Hemostat Straight 5 in Solder Pocket Pak Soldering Iron Professional 25 watt Spring Hook Tool Combination Stripper Wire 16 to 26 AWG Stripper Wire 22 to 31 A...

Page 179: ...icating 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 He...

Page 180: ...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...

Page 181: ...ndows 98 software Laptop Interface Cable Keithley Triad Field Service kit Keithley PN 10100A Dosimeter with kVp and Time Readout Filter Kit HVL Filter Pack Wide Range 50 kV to 150 kV Ion Chamber 15 cc...

Page 182: ......

Page 183: ...dix provides the required forms for the installation calibration and preventive maintenance of the EPEX Omniflex IV System Contents Subject Page System Installation C 3 System Calibration Forms C 9 Pr...

Page 184: ......

Page 185: ...EPEX Omniflex IV System Service Manual Forms C 3 System Installation On the following page is the form required when installing the system using the procedures in Chapter 3...

Page 186: ......

Page 187: ...ormer 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...

Page 188: ......

Page 189: ...to L 2 phase L1 phase to L 3 phase L 2 phase to L 3 phase Vac Main Line Fuse Voltage L1 phase to L 2 phase Vac Driver Auxiliary Board Voltage Vac F4 to F6 Vac Verify that the voltage is 400 Vac Vac I...

Page 190: ......

Page 191: ...EPEX Omniflex IV System Service Manual Forms C 9 System Calibration Forms On the following pages are the forms required when calibrating the system using the procedures in Chapter 4...

Page 192: ......

Page 193: ...LONG x _______ cmLA T X ray field size _______ cmLONG x _______ cmLA T Light to X ray center center error _______ mm Crosshair to X ray center center error _______ cm Detector Array to X ray center ce...

Page 194: ......

Page 195: ...AEC Preliminary Overall Gain Calibration EPEX Preliminary Overall Gain cdr Pass ________ AEC Preliminary Overall Gain Measured DV for Image Center ROI Cell 2 ________________...

Page 196: ......

Page 197: ...nsation for Film 2 cdr Pass ________ requirement Delta 200 to the acquired DV Mean at 65 kVp Phantom Thickness AEC ms 1 5 in 4 5 in 4 5 in 1 5 in 3 in DV Mean Reference 6 in 6 in N A 50 75 85 95 55 65...

Page 198: ......

Page 199: ...PEX Omniflex kVp Compensation for Film 2A cdr Pass ________ requirement Delta 200 to the acquired DV Mean at 65 kVp Phantom Thickness AEC ms 1 5 in 4 5 in 4 5 in 1 5 in 3 in DV Mean Reference 6 in 6 i...

Page 200: ......

Page 201: ...Adjusting the Final Ion Chamber Preamplifier Gain EPEX Preamplifier Gain cdr Pass ________ mR mAs AECTarget mAs mR DV Mean...

Page 202: ......

Page 203: ...______ Grid Speed medium kVp 60 mA 25 Phantom 0 in Field Size auto Setup Balance Data Portrait Inverted 4 Rt Landscape 5 Rt Portrait AEC Detector s 1 2 3 Exposure ms Detector Selected Lt Ctr Rt Verify...

Page 204: ......

Page 205: ...ventive Maintenance Forms On the following pages are the forms required when performing system preventive maintenance including Semi Annual Annual For preventive maintenance forms for system component...

Page 206: ......

Page 207: ...for cable sheath wear pinching or excessivebending Performthe X ray tube auto calibration routine Refer to Chapter 4 V erify the calibration of the Generator Refer to manufacturer s documentation Per...

Page 208: ......

Page 209: ...2 cdr Semi Annual Preventive Maintenance Checklist System cont Comments Inspection Check for dust in DirectRay Console Check Console fan DirectRay Check all connections and make sure they are secure...

Page 210: ......

Page 211: ...s or louvers on the Generator cabinet Inspect ground handswitch operator contols control cables and strain reliefs for wear and pinching Check U arm cable drape inspect for cable sheath wear pinching...

Page 212: ......

Page 213: ...Appendix D Field Replaceable Units This appendix lists the names and part numbers for the most commonly field replaced EPEX Omniflex IV System components Contents Subject Page Ordering Parts D 2...

Page 214: ...e 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...

Page 215: ...V 330 0014 Fan 220 V Whisper AC 2 100 0045 UPS Oneac 230 V 1 DirectRay Controller and DirectRay Detector 010 1253 DRAC Array Controller 1 010 1252 Model 100 Medical Grade Array 1 Collimator 590 0528 E...

Page 216: ...y 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 0...

Page 217: ...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 0...

Page 218: ...ard 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 Auxillia...

Page 219: ...tch 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 Ass...

Page 220: ...over 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 Towe...

Page 221: ...3 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...

Page 222: ...Rotation 180 0475 Cable Vert Brks Rotation Joint 180 0476 Cable Car Arm Bucky Pos 180 0477 Cable Panel Handle Arm A B 180 0478 Cable Rotation Sensor PCBs 180 0479 Ion Chamber 36 V PS 180 0488 Cable Po...

Page 223: ...EPEX Omniflex System Service Manual Field Replaceable Units D 11...

Page 224: ......

Page 225: ...E 1 Appendix E EPEX Omniflex IV System Wiring Diagrams This appendix includes the schematics for the EPEX Omniflex IV System...

Page 226: ......

Page 227: ...st or the highest frequency component in the signal Amorphous Selenium aSe Semiconductor material used in the DirectRay Detector to convert X ray energy directly into electricity Amorphous Silicon aSi...

Page 228: ...n a notation using the binary system Bucky The component that houses the DirectRay Detector AEC moving grid and related components In the DirectRay System the bucky contains the DirectRay Detector ins...

Page 229: ...er X ray image can be captured by a digital detector Data Compression A method of reducing required data storage capacity by storing data in encoded form Various encoding methods are used to eliminate...

Page 230: ...nd the uninterruptible power supply UPS It also stores the DirectRay Console Application the user interface for the system DirectRay Controller The interface between the DirectRay Detector and the Dir...

Page 231: ...he patient Filtration 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 filtra...

Page 232: ...inted image Image Intensifier Used to amplify a fluoroscopic image to reduce patient dose Indirect Capture Image capture systems that involve light in the image capture process Integrated Synchronized...

Page 233: ...radiation For example as you go from 100 mA to 200 mA you are increasing the quantity of radiation Magnetic Disk Flat circular plate with a surface layer on which data can be stored by magnetic record...

Page 234: ...energy that travel at the speed of light Photostimulation Emission of visible light following excitation by laster light Picture Archiving and Communications System PACS The Picture Archiving and Comm...

Page 235: ...IS In a hospital the computer system that tracks patient demographic information visit information and other patient records Radiopaque Tissue or material that absorbs X rays and appears bright on a r...

Page 236: ...so on SCR Silicon Controlled Relay SCSI Small Computer System Interface Secondary Factors Factors that describe the quality of a finished radiograph density contrast detail and distortion Sharpness Th...

Page 237: ...onstant voltage because there are no deep valleys between pulses Commercial electric power is usually produced and delivered by three phase alternating current ac Generators Tiling Process of putting...

Page 238: ...it 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 contras...

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