- Frank`s Hospital Workshop
Contents
1. mAs Selects the exposure in mAs X ray tube current x exposure time Note gt If after pressing any of these push buttons the technique value is blocked and an acoustic signal is emitted it could mean that Radiographic Parameters Blockage When any of the maximum or minimum radiographic parameter limit is reached its related display begins flashing accompanied of an acoustic signal Generator Power Limit If the power limit KV x mA is reached by increasing the kVp or mAs up to a maximum possible value the mAs value is blocked Flashing values on kV and mAs displays and an audible signal will alert operator about the situation If required kV could be increased up to its maximum value while mA value may automatically decrease as long as mAs value is kept the same Space Charge If a variation of the kV or mAs induces to reach space charge limit the parameter is blocked and a flashing value on the kV display and an acoustic signal will alert operator about the situation X ray Tube Ratings or X ray Tube Overheating If a technique reaches the X ray Tube ratings limit or the X ray tube is momentarily overheated some technique could not be selected Flashing values on the kV mAs displays and an acoustic signal will alert operator about the situation 24 OM 0269R5 Portable X Ray Units Operation 3 2 43 EXPOSURE CONTROLS Radiographic exposures are made with the Preparation and Exposure push buttons or w2. WHEN THE UNIT IS TURNED OFF ON DO NOT PERFORM V WARNING ANY EXPOSURE BEFORE 12 MINUTES FROM THE LAST EXPOSURE IT ASSURES A COMPLETE COOLING OF THE X RAY TUBE OM 0269R5 19 Portable X Ray Units Operation 3 2 2 AUTOMATIC POWER LINE DETECTION SYSTEM Note 7 By means of this System the Unit detects the maximum operative Power Line adapting the Exposure Parameters to the Power available and avoiding undesired line breakdowns when operating with poor electricity lines 1 Press and hold the Collimator Lamp push button and then turn the Unit ON The Display shows LPd ACT Line Power Detection Active 2 Release the Collimator Lamp push button the Display shows LPD P E Line Power Detection Preparation Exposition 3 Press Prep count to five 5 and then press and hold X Ray ON until three 3 consecutive exposures are performed At this moment if the X ray Tube is too hot the Display shows StP very uncommon if this is the case wait for the Tube to cool and repeat procedure 4 Release X Ray ON button the procedure has finished and the Display shows normal parameters Now the Unit has detected the maximum Power Line that can be used normal operation If error code E95 appears at this moment it means that the line is not good enough and exposures will not be allowed if possible change the Unit Plug to another socket line If any error code other than E95 appea
3. Portable X Ray Units Operation This page intentionally left blank 34 OM 0269R5 Portable X Ray Units Operation SECTION 5 PERIODIC MAINTENANCE In order to assure continuous safe performance of the X ray Unit a periodic maintenance program must be established It is the owner s responsibility to supply or arrange for this service There are two levels of maintenance the first consists of tasks which are performed by the user operator and the second are those tasks to be performed by qualified X ray service personnel The first periodic maintenance service should be performed six 6 months after installation and the subsequent services at twelve 12 month intervals The manufacturer undertakes to have available spare parts for this equipment at least for five 5 years after the unit manufacturing 5 1 OPERATOR TASKS The tasks of this periodic maintenance shall include the following items DO NOT REMOVE ANY COVER DISASSEMBLE OR mm D ANGER MANIPULATE INTERNAL COMPONENTS IN THE UNIT THESE ACTIONS COULD CAUSE SERIOUS PERSONAL INJURIES AND OR DAMAGE TO EQUIPMENT NEVER ATTEMPT TO CLEAN ANY PART OF THE UNIT WHEN UT WARNING ITIS SWITCHED ON ALWAYS SWITCH OFF THE EQUIPMENT AND ISOLATE THE MAINS ELECTRICAL SUPPLY BEFORE CLEANING 1 Switch the Unit OFF 2 Externally check the proper cable connections between each component in the X ray system 3 Clean the equipment frequently particul
4. 2 9 8 8 L N N L amp o n 2 M z E 4 4 ul tn it z EXAMINATION TABLE 2 z B S o o Y Y Dimensions in cm o SIGNIFICANT ZONE OF OCCUPANCY E Minimum 80 gt Minimum 200 Minimum 200 E gt 8 Min 60 Min 60 ARA E X RAY UNIT gt gt o 5 5 n 5 8 8 5 t 5 N TUBE STAND N E E z z 4 4 L e LL 5 5 S o E o o SIGNIFICANT ZONE OF OCCUPANCY Operation OM 0269R5 11 Portable X Ray Units Operation This page intentionally left blank 12 OM 0269R5 Portable X Ray Units Operation SECTION 3 OPERATING CONTROLS SID Guard Articulated Arm Power Module 4 Power Module Support Control Module Lateral Bars Control Panel 1 74 optional Front Handle Base TA 7 Handswitch Cassettes Basket Steering Wheels Operation is carried out from the different controls Note Use the operating controls as described in this manual any other non indicated combination may cause an incorrect operation of the equipment General movements for travelling are controlled with the Front Handle and Brake Bar which allow movements in all directions Control Console All the controls indicators and displays are positioned in related groups or modules depending u
5. Two Focal Spots Anode Heat Storage Capacity Target Angle Inherent Filtration Yes 0 6 mm 1 4 mm 40 000 HU 15 3 3 mm Al 80 KVp Power Cable Handswitch Cable Power Line Operation 6 meters 3 meters Single Phase Line Automatic Regulation from 100 to 240 10 50 60 Hz Connection to standard outlets with GND that accomplishes local regulations Maximum Power Line Impedance Refer to Illustration 6 1 Recommended Thermomagnetic Circuit Breaker for Line Voltage at 110 VAC for Line Voltage at 230 VAC OM 0269R5 37 Portable X Ray Units Operation Illustration 6 1 Maximum Power Line Impendance 2 68 2 48 2 28 2 08 1 88 1 68 1 48 1 28 AN 1 08 0 88 0 68 MAXIMUM POWER LINE IMPEDANCE OHMS 0 48 0 28 0 08 90 100 110 120 130 140 150 160 170 180 190 200 210 220 230 240 250 260 LINE VOLTAGE VRMS ENVIRONMENTAL REQUIREMENTS Temperature range of 40 C to 70 C Relative Humidity range of 10 to 100 Atmospheric Pressure range of 500 hPa to 1060 hPa Storage Transport Environmental Conditions Temperature range of 10 C to 40 C Relative Humidity no condensing range of 30 to 75 Atmospheric Pressure range of 700 hPa to 1060 hPa Operating Environmental Conditions Length Height 1590 mm max 2380 mm max 38 OM 0269R5 Portable X
6. pull the Mechanical Lock a and extend the Leg b 2 Insert the Mechanical Lock in the hole c provided 3 Put the Unit in stand up position and push down on the U shaped support in order to release the Arm 4 Raise the Arm INSERT OM 0269R5 17 Portable X Ray Units Operation 3 1 3 FOLDING THE UNIT 1 Fold the Arm to the parking position The Arm must be hooked to the Column 2 Lay down the Unit on the floor 3 Pull the Mechanical Lock a and push it down b in order to fold the Leg 4 Then fold the Leg 5 Insert the Mechanical Lock in the upper hole c 18 OM 0269R5 Portable X Ray Units Operation 3 2 X RAY UNIT Illustration 3 1 X ray Unit Manual Collimator Interface Connector RS232 Service Only Power ON OFF Switch Control Panel Power Line Cable Handswitch 3 2 1 POWER OFF The Unit should be plugged to a wall socket that accomplishes with local regulations and electrical requirements of the equipment refer to Section 6 for Technical Specifications For safety reasons and for proper functioning make sure that CAUTION the Unit is connected to a standard outlet with GND This Magnetothermic Switch is used to powerthe generator ON OFF After the generator is turned ON a power up routine is shown on the Control Panel displaying the software version 05 0 Vers 01 RO5 0
7. les normes internationales nationales et locales en vigueur Le fabricant recommande une fois le cycle terminal de l quipement ou syst me atteint de contacter un repr sentant autoris du fabricant ou les autorit s comp tentes en la mati re afin d organiser et de g rer le recyclage ad quat de cet quipement ou appareil Portable X Ray Units REVISION 0 1 2 3 4 5 Operation REVISION HISTORY DATE JAN 29 2004 APR 1 2004 JUNE 1 2004 SEP 10 2004 APR 18 2005 OCT 27 2005 REASON FOR CHANGE First edition UL Classified Automatic Power Line Detection IEC declaration and dimensions Error Code E50 Duty Cycle update Technical Specifications This Document is the English original version edited and supplied by the manufacturer The Revision state of this Document is indicated in the code number shown at the bottom of this page DANGER GEES UU CAUTION Note ADVISORY SYMBOLS The following advisory symbols will be used throughout this manual Their application and meaning are described below DANGERS ADVISE OF CONDITIONS OR SITUATIONS THAT IF NOT HEEDED OR AVOIDED WILL CAUSE SERIOUS PERSONAL INJURY OR DEATH ADVISE OF CONDITIONS OR SITUATIONS THAT IF NOT HEEDED OR AVOIDED COULD CAUSE SERIOUS PERSONAL INJURY OR CATASTROPHIC DAMAGE OF EQUIPMENT OR DATA Advise of conditions or situations that if not heeded or avoided could cause personal injury or damage to equipm
8. plomo bater as etc los cuales se consideran y son residuos peligrosos al finalizar la vida til del equipo o sistema seg n establecen las normas internacionales nacionales y locales El fabricante recomienda que al finalizar la vida til de equipo sistema se contacte con un representante autorizado delfabricante o con un gestor autorizado de residuos para laretirada de este equipo o sistema ENVIRONMENTAL STATEMENT ON THE LIFE CYCLE OF THE EQUIPMENT OR SYSTEM This equipment or system contains environmentally dangerous components and materials such as PCB s electronic components used dielectric oil lead batteries etc which once the life cycle of the equipment or system comes to an end becomes dangerous and need to be considered as harmful waste according to the international domestic and local regulations The manufacturer recommends to contact an authorized representative of the manufacturer or an authorized waste management company once the life cycle of the equipment or system comes to an end to remove this equipment or system DECLARATION D ENVIRONNEMENT SUR LA VIE UTILE DE L EQUIPEMENT OU SYSTEME Cet quipement ou syst me contient des composants et mat riaux dangereux pour l environnement ex lectroniques cartes composants lectroniques huile di lectrique us e plomb batteries etc lesquels sont consid r s comme r sidus dangereux en cycle terminal de vie d un quipement ou syst me en accord avec
9. radiation protection in accordance with IEC 60601 1 3 for which compliance is to be stated This X ray unit meets Standard IEC 60601 1 3 and IEC 60601 1 28 requirements DESIGNATED SIGNIFICANT ZONES OF ACCUPANCY X RAY EQUIPMENT specified for any RADIOLOGICAL examination shall have at least one SIGNIFICANT ZONE OF OCCUPANCY for the use of the OPERATOR and staff designated as follow RADIOGRAPHIC EXAMINATION ON THE CHAST UNIT OR FRONT PANEL CHEST UNIT Dimensions in cm 100 Minimum 200 gt lt 5 o 5 y Rs 5 F40 8 o LI o ul ei u S N X RAY UNIT a a ul E z gt 5 t a N E ul E Li 4 E us z Min 60 3 100 Minimum 200 gt lt o 2 8 5 o X RAY UNIT 9 EE E co 5 gines z E o O 9 ul E o TUBE STAND z CHEST UNIT ral 10 OM 0269R5 Portable X Ray Units RADIOGRAPHIC EXAMINATION ON ANY PATIENT SUPPORT OR ANY TABLE Minimum 80 Minimum 80 Minimum 200 Minimum 200 gt E X RAY UNIT gt LJ gt o 2 m amp E amp 2
10. 8 2 4 Radiation Protection 8 2 5 Monitoring of Personnel 9 2 6 Protection against Electric Shock Hazards 9 2 7 Protection against Hazards from Unwanted or Excessive Radiation 10 2 8 Designated Significant zones of Occupancy 10 3 OPERATING CONTROLS 13 3 Mobles IN ae pet fea el an 15 3 1 1 Parking Position of the Arm 16 3 1 2 Unfolding the 17 3 1 3 Folding the a 18 3 2 X Ray UNIE iet its sin ne etes Ris 19 3 21 Power ONJOFF is nue aa eb XA RR RR OD RR aes 19 3 2 2 Automatic Power Line Detection System 20 3 2 8 Manual Power Reduction 21 3 2 4 Control Panel viii se med we TR RACER eee wart 22 3 2 4 1 Focal Spot Indicators 22 3 2 4 2 Radiographic Parameters 23 3 2 4 8 Exposure Controls 25 OM 0269R5 Portable X Ray Units Operation Section Page 3 9 QOollimatOr i ric e pr 26 3 4 X ray Handswitch 2 hn 28 3 5 Heat Units and Temperature of Power Module 28 3 6 Error COdES is
11. NTIFICATION Identification labels of the Portable X Ray Units provide information on Product Model Volts V Line Phases Frequency Hz and Power kW Date of manufacture Reference Manufacturer Manufacturing location Certifications OM 0269R5 Portable X Ray Units Operation 1 3 CERTIFICATIONS The X ray Unit covered by this Operation Manual is authorized to be marked with CE MARKING in accordance with the provisions of the Council Directive 93 42 EEC concerning Medical Devices 1 4 CLASSIFICATION The X Ray Unit covered by this Operation Manual is classified as Protection against Electric Shock Class Type B applied parts Protection against Harmful Ingress of Water Ordinary Degree of Safety in the presence of Flammable Anesthetics Mixture with air or with oxygen or with nitrous oxide Not suitable for use in the presence of Flammable Anesthetics Mixture with air or with oxygen or with nitrous oxide Mode of Operation Continuous with intermittent loading OM 0269R5 Portable X Ray Units SECTION 2 2 1 GENERAL CAUTION UT WARNING U WARNIN UY WARNING Operation SAFETY Keep this Operating Manual with the equipment at all times and periodically review the Operating and Safety instructions For continue safe use of this equipment follow the instruction
12. O INTERFERENCE AND NO POSSIBILITY OF COLLISION WITH THE PATIENT OR WITH OTHER EQUIPMENTS MAKE SURE THAT THE X RAY TUBE IS PLACED IN TO UT WARNING WORKING POSITION WITH THE REFERENCE AXIS X RAY BEAM POINTING TO THE RECEPTION AREA SHOULD ANY INTERFERENCE EMC BE DETECTED WITH UT WARNING OTHER EQUIPMENT PLEASE POSITION OTHER EQUIPMENT AWAY FROM THIS ONE OM 0269R5 7 Portable X Ray Units Operation 2 3 MAXIMUM PERMISSIBLE DOSE MPD Before operation persons qualified and authorized to operate this equipment should be familiar with the Recommendations of the International Commission on Radiological Protection contained in Annals Number 60 of the ICRP with applicable National Standards and should have been trained in use of the equipment THE OPERATOR SHALL USE FOCAL SPOT TO SKIN DISTANCES AS LARGE AS POSSIBLE IN ORDER TO KEEP THE ABSORBED DOSE TO THE PATIENT AS LOW AS REASONABLY ACHIEVABLY 2 4 RADIATION PROTECTION Because exposureto X ray radiation may be damaging to health use great care to provide protection against exposure to the primary beam Some ofthe effects of X ray radiation are cumulative and may extend over a period of months or years The best safety rule for X ray operator is Avoid exposure to the primary beam at all times Any object in the path of the primary beam produces secondary scattered radiation The intensity of the secondary radiation is dependent upon the energy and inten
13. OF MAXIMUM ATTENUATION EQUIVALENT OF POSSIBLE MATERIALS LOCATED IN THE X RAY BEAM MAXIMUM ATTENUATION EQUIVALENT mm AL IEC 60601 1 3 FRONT PANEL OF WALL SUPPORT OR BUCKY PATIENT SUPPORT MOVABLE WITHOUT ARTICULATED JOINTS PATIENT SUPPORT CANTILEVERED 2 2 RESPONSIBILITIES ENSURE THAT ALL PERSONNEL AUTHORIZED TO USE THE UT WARNING EQUIPMENT ARE AWARE OF THE DANGER OF EXCESSIVE EXPOSURE TO X RAY RADIATION THE EQUIPMENT HEREIN DESCRIBED IS SOLD WITH THE UNDERSTANDING THEMANUFACTURER ITS AGENTS AND REPRESENTATIVES ARE NOT LIABLE FOR INJURY OR DAMAGE WHICH MAY RESULT FROM OVEREXPOSURE OF PATIENTS OR PERSONNEL TO X RAY RADIATION 6 OM 0269R5 Portable X Ray Units Operation THE MANUFACTURER DOES NOT ACCEPT ANY UT WARNING RESPONSIBILITY FOR OVEREXPOSURE OF PATIENTS OR PERSONNEL TO X RAY RADIATION GENERATED BY THIS EQUIPMENT WHICH IS A RESULT OF POOR OPERATING TECHNIQUES OR PROCEDURES NO RESPONSIBILITY WILL BE ASSUMED FOR ANY EQUIPMENT THAT HAS NOT BEEN SERVICED AND MAINTAINED IN ACCORDANCE WITH THE MANUFACTURER INSTRUCTIONS OR WHICH HAS BEEN MODIFIED OR TAMPERED WITH IN ANY WAY IT IS THE RESPONSIBILITY OF THE OPERATOR TO ENSURE UT WARNING THE SAFETY OF THE PATIENT WHILE THE X RAY EQUIPMENT IS IN OPERATION BY VISUAL OBSERVATION PROPER PATIENT POSITIONING AND USE OF THE DEVICES THAT ARE INTENDED TO PREVENT PATIENT INJURY ALWAYS WATCH ALL PARTS OF THE SYSTEM TO VERIFY THAT THERE IS N
14. QUIPMENT The Unit is controlled by means of the Front Handle and the Brake Bar The Brake Bar is released by gripping both bars at the same time Grip both Bars and pushthe Unit the front Steering Wheels and the back main Wheels provide a comfortable driving as well as an easy positioning of the Unit Also the Unit is provided with a Blocking Button that keeps brakes released for longer distances Grip Front Handle Bars and press the Blocking Button to release brakes and start motion Press and release both Bars to stop motion Front Handle Blocking Button Brake Bar OM 0269R5 15 Portable X Ray Units Operation Obstacles as kerbs and steps are easily saved by stepping on the Base ofthe Unit in order to raise the front wheels The Lateral Bars optional greatly facilitate the slide ofthe Unit during vehicle loading or unloading 3 1 1 PARKING POSITION OF THE ARM To place the Arm in parking position Push downwards the Assembly with both hands until the parking detent is lock To release the Arm from its parking position While the U shaped support is released with one hand with the other hand and at the same time pull outward the Arm RATA Note gt To avoid damages when driving the Unit always keep the Arm in parking position 16 OM 0269R5 Portable X Ray Units Operation 3 1 2 UNFOLDING THE UNIT 1 With the Unit laid down on the floor
15. RADIOLOGICAL SOLUTIONS stephani e Technical Publication OM 0269R5 Operation Movix 4 0 Portable X ray Units STEPHANIX 10 rue Jean Moulin 2 1 du Bayon 42150 LA RICAMARIE FRANCE Tel 00 33 4 77 47 81 60 Fax 00 33 4 77 37 55 19 Le marquage CE qui se trouve sur ce produit indique que celui ci est en conformit avec la directive europ enne des dispositifs m dicaux 93 42 CEE This product bears a marking in accordance with the provisions of the 93 42 EEC MDD dated June 14 1993 0459 i IMPORTANTE Protecci n ante los rayos X LOS EQUIPOS DE RAYOS X SON PELIGROSOS PARA EL PACIENTE Y EL OPERADOR A MENOS QUE LAS MEDIDAS DE PROTECCION SEAN ESTRICTAMENTE OBSERVADAS Si el equipo de rayos X no se usa adecuadamente puede causar lesiones Por este motivo las instrucciones aqu incluidas se deben leer y comprender en su totalidad antes de intentar poner el equipo en funcionamiento Estaremos gustosos de asistir y cooperar en poner el equipo en marcha Aunque el equipo est construido seg n las normas de seguridad m s estrictas y presenta un alto grado de protecci n contra las radiaciones X ning n dise o practico puede ofrecer una protecci n completa Tampoco ning n dise o practico puede obligar al operador a tomar las precauciones adecuadas para prevenir la posibilidad de que cualquier persona de manera descuidada poco sensata o ignorante se exponga a radiaciones directas o indirectas Es im
16. Ray Units Operation Illustration 6 2 Dimensions 200 2180 1380 390 Lu 1380 OM 0269R5 39 Portable X Ray Units Operation Illustration 6 3 Dimensions lt REFERENCE AXIS FOCAL SPOT ye JO lt 2 Zi AA SM MR AA NER O DNE 2 th amp S g O a 8 133 176 132 139 309 a FOCAL SPOT Ld D lt REFERENCE AXIS J lt Y 1 a N 6 c e Y Y Ne 133 123 278 _ 534 OM 0269R5 40
17. al Spot and kVp Increase or Decrease push buttons The actual X ray tube heat Units value after keeping pressed one of the Focal Spot buttons and the Collimator lamp push buttons Hefer to Section 3 5 The error messages during a system fault preceded by the letter E a e E03 Refer to Section 3 6 mAs DISPLAY can show The radiographic mAs value selected for the technique keeping the maximum mA and minimum exposure time values If an exposure is aborted when releasing the Exp or Prep push buttons or because of a system failure an audible alarm sounds until the error condition is reset pressing the Collimator Lamp push button The actual mAs value of the exposure is shown for a while when the error condition is produced and again when the Collimator Lamp push button is pressed to reset the error It may also display mA When any Focal Spot and mAs increase push buttons pressed at the same time Exposure Time in seconds When any Focal Spot and mAs decrease push buttons are pressed at the same time Refer to Section 6 for parameter ranges with reference to equipment model OM 0269R5 23 Portable X Ray Units Operation n INCREASE DECREASE Radiographic technique values increase or decrease step by step each time its related push button is pressed and changes faster when either of them is pressed continuously kVp Selects the X ray tube voltage
18. arly if corroding chemicals are present Clean external covers and surfaces with a cloth moistened in warm water with mild soap Wipe with a cloth moistened in clean water Do not use cleaners or solvents of any kind OM 0269R5 35 Portable X Ray Units Operation 5 2 SERVICE TASKS Only service personnel specifically trained on this medical X ray equipment should work on service tasks or maintenance of the equipment Refer to Maintenance Section of the Service Manual 36 OM 0269R5 Portable X Ray Units SECTION 6 Note 7 Operation TECHNICAL SPECIFICATIONS Specified accuracy does not include test equipment accuracy kVp Range Accuracy 40 to 115 in 1 kVp steps x 596 kVp High Frecuency Ripple 300 kHz mAs Range Accuracy 0 1 200 mAs in 25 steps 5 0 1 mAs mA Stations 5 6 4 8 10 12 5 16 20 25 32 40 50 64 80 100 Exposure Time Range Power Output O 0 15 0 001 10 seconds in 25 steps 115 kVp 32 mA 100 kVp 40 mA 50 kVp 80 mA 40 kVp 100 mA Duty Cycle 12 exposures per hour consisting of 4 consecutive series of 3 exp at 10096 50 and 2596 of maximum energy respectively lapse time between exposures 5 min The equivalent current in continuous mode of the above Duty Cycle corresponds to 0 22 mA at a nominal voltage of 100 kVp Maximum leakage radiation 1 mGy per hour X ray Tube Assemblies Stationary Anode
19. ent or data Alert readers to pertinent facts and conditions Notes represent information that is important know but which do not necessarily relate to possible injury or damage to equipment OM 0269R5 Portable X Ray Units Operation SAFETY SYMBOLS The following safety symbols will be used in the equipment Their meaning is described below Attention consult accompanying documents lonizing radiation Type B equipment Dangerous voltage Ground This symbol indicates that the waste of electrical and electronic equipment must not be disposed as unsorted municipal waste and must be collected separately Please contact an authorized representative of the manufacturer or an authorized waste management company for information concerning the decommissioning of your equipment A gt 8 amp OM 0269H5 Portable X Ray Units Operation TABLE OF CONTENTS Section Page 1 INTRODUCTION n nnn rmn ta nno in nnn nin nn an nn n nn D A 1 1 1 General Features cce ere A A 2 1 2 Product Identification 3 1 3 Gertifications ici a AGER EROS RD Nan Ree eae ee ace te 4 1 4 Classification mt e boe Pade CP CIRC EET Te 4 2 SAFETY AR P 5 2 1 General i re eR e e OU E a p Sea a OD PUR D 5 2 2 Responsibilities cac ed sene eee her xr A ER ee Bere rale alas 6 2 3 Maximum Permissible Dose MPD
20. ent remains inoperative turn it OFF and call Field Service Press the Collimator Lamp push button Repeat exposure with same technique values If the error code persists try exposure with another combination of technique values If the equipment remains inoperative turn it OFF and call Field Service Filament or Collimator Lamp current is out of range Press the Collimator Lamp push button If the error code persists turn the Unit OFF and wait 30 minutes before turning it ON again If the equipment remains inoperative turn it OFF and call Field Service mA without exposure order E03 E06 E08 E09 E10 Corrupted data in E2PROM E11 System error DC BUS error E13 E15 E19 E20 kV without exposure order Press the Collimator Lamp push button If the error code persists turn the Unit OFF and ON If the equipment remains inoperative turn it OFF and call Field Service OM 0269R5 29 Portable X Ray Units Operation Table 3 2 cont Error Codes ERROR DESCRIPTION WHAT TO DO Image Receptor not ready for an exposure Press the Collimator Lamp push button If the error code persists turn the Unit OFF Check cable connections of Image Receptor and turn the Unit ON If the equipment remains inoperative turn it OFF and call Field Service Inverter Overheating error The temperature calculation for the next exposure is beyond 90 or the present conditions of t
21. ermittently shown on the kV Display at the same time an alarm sounds In general to remove the error condition press the Collimator Lamp Refer to Table 3 2 All these error codes are preceded by the letter E a e E03 and they will enable the operator to indirectly convey the possible source of error to service personnel This may prevent the need for a service call or enable service personnel to anticipate corrective actions prior to arriving in site Table 3 2 Error Codes ERROR DESCRIPTION WHAT TO DO Wrong configuration of the X ray Tube Turn the Unit OFF and call Field Service Exposure or and Preparation orders are activated during power up X ray Tube configuration error System error Power Inverter error due to overcurrent Release all the controls Turn the Unit OFF and ON If the equipment remains inoperative turn it OFF and call Field Service Press the Collimator Lamp push button If the error code persists turn the Unit OFF and ON If the equipment remains inoperative turn it OFF and call Field Service Turn the Unit OFF and ON If the equipment remains inoperative turn it OFF and call Field Service mA is out of range during exposure or exposure has been aborted by the Operator kV is out of range during exposure or exposure has been aborted by the Operator Press the Collimator Lamp push button If the error code persists turn the Unit OFF and ON If the equipm
22. he X ray Unit inhibit the exposure inverter overheated Parameters for next exposure are temporally limited by the Unit change the exposure parameters or wait for the X ray Unit to cool This error does not require to press the Collimator Lamp push button their signal indicatiors disappear automatically If the error code persists turn the Unit OFF wait 12 minutes and turn it ON again If the equipment remains inoperative turn it OFF and call Field Service Technique error If it activates during exposure it means that the exposure has been interrupted by the Security Timer because of a system failure Turn the Unit OFF and call Field Service The X ray Tube thermostat pressurestat is open or is not working properly Heat units may raise to any value Tube Overload error The selected technique is beyond the X ray Tube ratings or present conditions of the X ray Tube inhibit the exposure anode overheated Parameters for next exposure may be temporally limited by the Unit change the exposure values or wait for the X ray Tube to cool Check that heat units available are lower than the calculated for the next exposure heat units close to zero Reduce exposure parameters or wait for the X ray Tube to cool These errors do not require to press the Collimator Lamp push button their signal indicatiors disappear automatically If the error code persists turn the Unit OFF wait 12 minutes and turn it ON agai
23. il the unit has completed its power up sequence 4 2 X RAY TUBE SEASONING AND X RAY TUBE WARMING UP The Seasoning and Warning up procedures assure a correct operation of the X ray Tube and must be properly carried out Otherwise the X ray Tube life may be considerably reduced or the X ray tube will suffer a permanent damage The Seasoning Procedure Running must be performed when the Tube is used for the first time or when it has not been in use for more than one month This action establishes a favorable distribution of the electrical charges and electrostatic stresses in the insulation system of the Tube and the associated equipment Not performing the Seasoning Procedure causes loss of the X ray Tube Warranty The Warming up Procedure must be performed at the start of each day or one hour after the last exposure Before performing X ray exposures ensure that the tube is properly warmed up Make sure that no persons will be inadvertently exposed to unnecessary X rays during this procedure OM 0269R5 31 Portable X Ray Units Operation 4 2 1 SEASONING PROCEDURE RUNNING AFTER ONE MONTH Note Close Collimator Blades fully and make sure that no one will be exposed Make sure that X ray Tube is fully cold at least 30 minutes without making exposures Select 70 kVp 10 mAs and Large Focus Perform one exposure per minute increasing 5 kVp in every exposure up to the maximum Tube voltage If there are no
24. ink modify the technique or modify Power percentage OM 0269R5 21 Portable X Ray Units Operation 3 2 4 CONTROL PANEL All controls and displays on the Control Panel are positioned according to their function E UNIT MAY DANGEROUS PATIENT AND OPERAT pumt OPERATING ARE ORSEEVED BE USED BY AUTRONLZED PERSONNEL ATENCION ESTA UNREAD DE PUEDE MOI PIELAGROGA PARA EL PACIENTE OA AC TORES 06 MOUNDAD E METICCIONEN 06 OPERACION BEAN ORMINASOS AO NMEMISADO AL PERDONA AUTOR AGO 3 2 4 1 FOCAL SPOT INDICATORS O LARGE FOCAL SPOT Selects the Large Focal Spot of the X ray tube SMALL FOCAL SPOT Selects the Small Focal Spot of the X ray tube The Focal Spot change keeps constant kVp and mAs and selects the maximum mA available and the minimum exposure time Note gt The Focal Spot change is related to the mA stations maximum mA station for Small Focal Spot and minimum mA station for Large Focal Spot configured by the field engineer during installation Note gt A blinking light on the push button and an audible alArm will alert the operator if present conditions of X ray Tube unable the change 22 OM 0269R5 Portable X Ray Units Operation 3 2 4 2 RADIOGRAPHIC PARAMETERS kVp mAs kVp DISPLAY can show The radiographic kVp value selected for the technique The Power percentage after pressing at the same time any Foc
25. is cis ais A lee CC CAR CHR CRAT 29 4 OPERATING SEQUENCES eec rernm nnnm rne 31 41 Start up Routine 31 4 2 X ray Tube Seasoning and X ray Tube Warm up 31 4 2 1 Seasoning Procedure 32 4 2 2 Warming up Procedure 32 4 3 Radiographic Operation 33 5 PERIODIC MAINTENANCE 22 n nn nnn nnn 35 biT Operator Tasks see Ange RR Iq CERTUS 35 5 2 Service Tasks RR Le a RU UR Ce RA E ee 36 6 TECHNICAL SPECIFICATIONS 44 37 ii OM 0269R5 Portable X Ray Units SECTION 1 Illustration 1 1 Portable X Ray Unit Operation INTRODUCTION This manual contains all the necessary information to understand and operate this Portable X Ray Unit provides a general description safety and regulatory information operating instructions and specifications concerning the equipment This Unit operates from single phase power supplies and provide all the Generator advantages of constant potential waveform including lower patient dose shorter exposure times and greater accuracy and consistency The Unit is controlled by microprocessor providing increased exposure consistency efficient operation and extended Tube life A high level of self diagnostics grea
26. ith the handswitch The status of the exposure is shown by the Ready and X ray On light indicators located on the respective push buttons for the duration of the exposure PREP Press the Prep push button to prepare the X ray tube for exposure The push button indicator will light when the X ray tube is prepared indicating that the technique selected is properly set there are no interlock failures or system faults and the X ray tube is ready for exposure After pressing this push button filament current switches from stand by to the selected mA X RAY ON When the indicator on the Prep push button is illuminated press this push button to start a X ray exposure Ifthe push button is released before the generator completes the selected time the exposure will be prematurely terminated and the actual mAs will be displayed accompanied of an audible alarm until the error condition is reset pressing the Collimator Lamp push button During the exposure the light indicator of this push button remains illuminated and audible signal sounds OM 0269R5 25 Portable X Ray Units Operation 3 3 COLLIMATOR Illustration 3 2 Collimator Controls SID FILM SIZE REFERENCES Collimator controls consist of three push buttons to switch for the Collimator lamp one located on the Control Panel and the othe two located n the Collimator cover and two knobs to open or close the internal blades of the Collimator The Colli
27. mator can be rotated 180 with detents at 900 Also the Collimator may be supplied with a SID Guard compulsory in some countries that can be manually attached or removed from the Collimator TAPE MEASURE FOR SID COLLIMATOR CONTROL KNOBS SID GUARD COLLIMATOR LAMP BUTTON COLLIMATOR LAMP After pressing this push button the Collimator lamp remains lit for 20 seconds to allow patient film alignment before Turning Off automatically This time may also be configured by the engineer during the installation to be between 10 and 50 seconds Collimator lamp is provided with a thermal protection that may reduce the lighting time of the lamp and even turn the light Off in case it is On for an excessive period of time In case this happens stop using the Unit for 1 minute before turning On Collimator lamp again The Collimator lamp may also be switched off pressing the Prep push button PROLONGED LIGHTING OF THE LAMP WILL PRODUCE OVERHEATING IN THE COLLIMATOR INTERNAL AREA UNLESS THE LAMP IS ALLOWED TO COOL 26 OM 0269R5 Portable X Ray Units A in Table 3 1 510 Film Size References Operation COLLIMATOR LAMP WITH LASER POSITIONER OPTIONAL After pressing the Collimator Lamp push button a cross shaped Laser light points at the patient and after one second the Collimator Lamp lights They remain lighting for 20 seconds before they switch Off automatically The light time may also be config
28. measures are adequate is the use of instruments to measure the exposure These measurements should be taken at all locations where the operator or any portion of the body may be exposed Exposure must never exceed the accepted tolerable dose A frequently used but less accurate method of determining the amount of exposure is the placement of film at strategic locations After a specified period of time develop the film to determine the amount of radiation A common method of determining whether personnel have been exposed to excessive radiation is the use of personal radiation dosimeters These consist of X ray sensitive film or thermoluminescent material enclosed within a holder that may be worn on the body Even though this device only measures the radiation which reaches the area of the body on which they are worn they do provide a reasonable indication of the amount of radiation received 2 6 PROTECTION AGAINST ELECTRIC SHOCK HAZARDS This X ray Unit has been classified type B in accordance with IEC 60601 1 This equipment meets the following Safety Standards IEC 60601 1 IEC 60601 1 1 IEC 60601 2 7 ACCORDING TO MDD 93 42 CEE THIS UNIT IS EQUIPPED WITH EMC FILTERS THE LACK OF THE PROPER GROUNDING MAY PRODUCE ELECTRICAL SHOCK TO THE USER OM 0269R5 Portable X Ray Units Operation 2 7 2 8 PROTECTION AGAINST HAZARDS FROM UNWANTED OR EXCESSIVE RADIATION Statement of compliance This X ray Unit with
29. n If the equipment remains inoperative turn it OFF and call Field Service System error Chopper failure System error Power supply error System error kV Unbalanced System error Exposure has been aborted by the Operator or system default Press the Collimator Lamp push button If the error code persists turn the Unit OFF and ON If the equipment remains inoperative turn it OFF and call Field Service Power Line not good enough for operation Press the Collimator Lamp push button turn Unit OFF and change the Unit plug to another socket line Try again the Detection Procedure if the error persists turn it OFF and call Field Service Defective RAM Turn the Unit OFF and ON If the Unit remains inoperative change RAM 30 OM 0269R5 Portable X Ray Units SECTION 4 Operation OPERATING SEQUENCES 4 1 START UP ROUTINE Note gt The Unit turns ON when the magnetothermic switch is set upward ON The Unit will go through a start up routine conducting an automatic self test The Display will show information usable only by service personnel Once the power up has been completed the Control Panel should display normal radiographic factors If a malfunction is found error messages will be displayed Some indicators on the Control Panel are used to provide service information during the start up process These indicators should be ignored by the operator unt
30. pon their functions as follows Power ON OFF Switch Radiography and General Controls 7 Handswitch Panel of the Manual Collimator with the controls for opening or closing the Collimator Blades and to switch ON the Collimator Lamp OM 0269R5 13 Portable X Ray Units Operation The mobile arm may adopt the following positions Vertical movement of the Arm to lower or raise the Tube Collimator Assembly which is used to adjust the Vertical SID Rotation of the Power Module Support 3609 Rotation ofthe Power Module with reference to its Support 360 that can be limited by the SID Guard and Harness Rotation of the Collimator with reference to the Power Module 900 This movement has a detent every 909 Note gt Release the Arm from its parking position prior to perform any Arm movement 14 OM 0269R5 Portable X Ray Units 3 1 MOBILE UNIT Y WARNING Operation ALWAYS DRIVE OR TRANSPORT THE UNIT WITH THE ARM IN PARKING POSITION FOR SAFETY REASONS THE FLOOR WILL NOT EXCEED 5 INCLINATION RAMPS MONITOR THE SYSTEM MOVEMENTS WITH SPECIAL CARE AVOID ANY IMPACT OF THE UNIT ON WALLS FURNITURE OR OTHER ELEMENTS IN THE ROOM THAT MAY CAUSE DAMAGE TO THE EQUIPMENT MONITOR WITH SPECIAL CARE THE PATIENT POSITION OR ANY OTHER PEOPLE TO AVOID INJURY CAUSED BY UNIT MOVEMENTS INTRAVENOUS TUBING CATHETERS AND OTHER PATIENT CONNECTED LINES SHOULD BE ROUTED AWAY FROM MOVING E
31. portante que cualquier persona relacionada con radiaciones X est debidamente entrenada y tome las medidas adecuadas para asegurar la protecci n contra posibles lesiones El fabricante asume que todo operador y personal de servicio autorizado para manejar instalar calibrar o mantener este equipo es consciente del peligro que conlleva la exposici n excesiva a las radiaciones X est suficientemente entrenado y posee los conocimiento necesarios para ello Por lo tanto el equipo aqu descrito se vende entendiendo que el fabricante sus agentes y representantes no tienen ninguna responsabilidad en caso de lesiones o da os que puedan resultar de la exposici n a dichas radiaciones Existen diversos materiales y dispositivos protectores cuyo uso es recomendable IMPORTANT X ray Protection X RAY EQUIPMENT IS DANGEROUS TO BOTH PATIENT AND OPERATOR UNLESS MEASURES OF PROTECTION ARE STRICTLY OBSERVED X ray equipment if not properly used may cause injury Accordingly the instructions herein should be thoroughly read and understood before attempting to place this equipment in operation We will be glad to assist and cooperate in placing this equipment in use Although this apparatus is built to the highest safety standards and incorporates a high degree of protection against X radiation other than the useful beam no practical design of equipment can provide complete protection Nor can any practical design compel the operator to take adequate
32. precautions to prevent the possibility of any persons carelessly unwisely or unknowingly exposing themselves or others to X radiation It is important that everyone working with X radiation be properly trained and take adequate steps to insure protection against injury The manufacturer assumes that all operator and service personnel authorized to use install calibrate and maintain this equipment is cognizant of the danger of excessive exposure to X radiation is sufficiently trained and has the required knowledges for it The equipment herein described is sold with the understanding that the manufacturer its agents and representatives are not liable for injury or damage which may result from exposure to X radiation Various protective material and devices are available It is recommended that such materials and devices be used IMPORTANT Protection contre les rayons X L EQUIPEMENT RAYONS X EST DANGEREUX A LA FOIS POUR LE PATIENT ET POUR L OPERATEUR A MOINS D OBSERVER STRICTEMENT LES CONSIGNES DE PROTECTION L quipement rayons X peut provoquer des blessures s il n est pas correctement utilis En cons quence les instructions de ce manuel doivent tre lues attentivement et bien assimil es avant de tenter de mettre en route ce mat riel Nous serons heureux de vous assister et de coop rer l installation de ce mat riel Bien que cet quipement soit construit selon les normes de construction les plus s v res et qu il comporte
33. rs on Display during procedure reset it with Collimator Lamp push button 20 OM 0269R5 Portable X Ray Units Operation Once the Line Power Detection Procedure is performed It is not necessary to perform the Warm Up procedure Perform the procedure every time the Unit is plugged in a different socket as the Unit applies the data of the last Power Line acknowledged After finishing the procedure the Heat Units value is reduced to the approx 70 wait a few minutes for the Tube to cool This procedure does not take into account the limitations of the Magnetothermic Breaker installed at site If the Magnetothermic Breaker installed at site still goes down perform the Manual Power Reduction procedure below 3 2 3 MANUAL POWER REDUCTION The operator may select the maximum Power percentage used by the Unit in order to avoid blown fuses or Circuit Breakers down in poor electricity lines For that press and hold any Focal Spot push button and increase or decrease the percentage by pressing the kVp Increase o Decrease push buttons respectively The kVp Display shows the Power percentage selected in 10 steps preceded by the letter P For example a display of P80 would indicate thatthe Power ofthe Unit will be limited to a maximum of 8096 P indicates that the Unit will operate at full Power 10096 factory set In case a technique exceeds the power required the kVp and mAs displays will bl
34. s X ray Unit is equipped with a Heat Unit Calculator for the X ray Tube and a Temperature Calculator for the Power Module Both values are calculated and totalled during exposures They can be displayed on the Unit after pressing the Collimator Lamp and any of the Focal Spot push buttons The kVp Display shows the percentage of Heat Units that remain preceded by the letter H For example a display of H75 would indicate that 75 of Heat Units capacity ofthe X ray Tube remains H indicates that full capacity remains 10096 The mAs Display shows the Temperature in Celsius Degrees preceded by the letter t For example a display of t32 would indicate 32 C Ifa new selection of parameters overpass 90 exposure is inhibited and values in displays blink accompanied by an alarm Reduce parameter values or wait for the unit to cool Both displays revert to its normal function after releasing any of the push buttons When the Unit is turned OFF ON both values are reset and indicate that full capacity of Heat units remain and the temperature calculator starts at 309C This may produce an erroneous calculation of Heat Units or Temperature if the X ray Unit is not fully cold 12 minutes have to be elapsed from the last exposure before performing the next exposure 28 OM 0269R5 Portable X Ray Units 3 6 ERROR CODES Operation Error codes indicate the potential cause of a system failure They are int
35. s in this Operating Manual Study this manual carefully before using the equipment and keep it at hand for quick reference THE EQUIPMENT DESCRIBED IN THIS MANUAL MUST BE ONLY HANDLE BY QUALIFIED PERSONNEL PREVIOUSLY TRAINED IN IT X RAY EQUIPMENT IS DANGEROUS TO BOTH PATIENT AND OPERATOR UNLESS PROTECTION MEASURES ARE STRICTLY OBSERVED IT IS VITALLY IMPORTANT THAT EVERYONE ASSOCIATED WITH X RAY RADIATION IS FAMILIAR WITH THE SAFETY AND REGULATORY INSTRUCTIONS CONTAINED WITHIN THIS MANUAL IN PARTICULAR THE STATEMENT AT THE BEGINNING OF THIS MANUAL ENTITLED IMPORTANT X RAY PROTECTION THESE INSTRUCTIONS SHOULD BE THOROUGHLY READ AND UNDERSTOOD BEFORE ATTEMPTING TO PLACE THIS EQUIPMENT IN OPERATION Although X radiation can be hazardous X ray equipment does not pose any danger when it is properly used Please ensure that all service and operating personnel are properly trained and informed on the hazards of radiation Those responsible for the system must understand the safety requirements for X ray operation Please study this manual and the manuals for each system component to be fully aware of all the safety and operational requirements Portable X Ray Units Operation FOR DIAGNOSTIC X RAY EQUIPMENT SPECIFIED TO BE UT WARNING USED IN COMBINATION WITH ACCESSORIES OR OTHER ITEMS NOT FORMING PART OF THE SAME ATTENTION TO THE POSSIBLE ADVERSE EFFECT ARISING FROM MATERIALS LOCATED IN THE X RAY BEAM SEE BELOW TABLE
36. sity of the primary beam and the atomic number for the object material struck by the primary beam Secondary radiation may be of greater intensity than that of the radiation reaching the film Take protective measures to safeguard against it An effective protective measure is the use of lead shielding To minimize dangerous exposure use such items as lead screens lead impregnated gloves aprons thyroid collars etc The lead screen should contain a minimum of 2 0 mm of lead or equivalent and personal protective devices aprons gloves etc must contain a minimum of 0 25 mm of lead or equivalent For confirmation of the local requirements at your site please refer to your Local Radiation Protection Rules as provided by your Radiation Protection Advisor WHILE OPERATING OR SERVICING X RAY EQUIPMENT ALWAYS KEEP A DISTANCE NOT LESS THAN 2 METERS FROM THE FOCAL SPOT AND X RAY BEAM PROTECT BODY AND DO NOT EXPOSE HANDS WRISTS ARMS OR OTHER PARTS OF THE BODY TO THE PRIMARY BEAM OM 0269R5 Portable X Ray Units Operation 2 5 MONITORING OF PERSONNEL Monitoring of personnelto 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 It may reveal inadequate or improper radiation protection practices and potentially serious radiation exposure situations The most effective method of determining whether or not the existing protective
37. t signs of instability the tube is ready for normal use If instability is observed during procedure reduce 5 kVp of the selected kVp and make two successive exposures then continue the process Check that the Heat Units capacity is above 8096 during this process 4 2 2 WARMING UP PROCEDURE EVERY DAY Close Collimator Blades fully and make sure that no one will be exposed Select 50 kVp 20 mAs and Large Focus Perform a total of three exposures 15 seconds apart Now the Tube is ready for normal use Excessive filament evaporation shortens X ray tube life Minimize evaporation by keeping Exposure Preparation time to an absolute minimum 32 OM 0269R5 Portable X Ray Units Operation 4 3 RADIOGRAPHIC OPERATION A typical examination sequence is as indicated below Make sure that the X ray tube is properly warmed up Position the patient for the examination Maintain the patient at the required position Prepare the X ray tube by pressing the handswitch push button to the Prep position and maintain it until the Heady indicator is illuminated Make the X ray exposure pressing the handswitch push button fully to the Exp position and maintain it throughout the exposure Then the X ray indicator will light and an audible signal will sound during the exposure When the exposure is finished release the push button Repeat the procedure if additional exposures are desired OM 0269R5 33
38. tly increases serviceability and reduces down time OM 0269R5 Portable X Ray Units Operation All functions displays and controls are logically arranged are easily accessible and identified to prevent confusion Radiographic technique factors and functions are selected by touch sensitive push buttons and displayed on the Control Panel The equipment consists of Control Panel with controls and displays for radiographic operations Handswitch Power Module containing control and power components HV Tank that comprises High Voltage Transformer Filament Transformer X ray Tube Collimator with controls to limit the X ray beam SID Guard optional Mobile Unit with an Articulated Arm and a Cassettes Basket 1 1 GENERAL FEATURES The main features of this Portable X Ray Unit are Safe and easy operation Constant potential high frequency operating on single phase lines Two point control by selecting kVp and mAs Tube protection circuitry prolongs Tube life and increases system performance Equipped with closed loop control of X Ray Tube current kVp and filaments which minimize potential errors and the need for readjustments Standard electric outlet operation from 100 to 240 10 VAC Automatic line voltage compensation due to closed loop operation of X ray Tube current and kVp Heat Unit storage for the X ray Tube OM 0269R5 Portable X Ray Units Operation 1 2 PRODUCT IDE
39. un haut degr de protection contre le rayonnement X en dehors du rayon utile aucune conception n apporte une protection totale De m me qu aucune conception ne peut obliger l op rateur prendre les pr cautions ad quates afin d viter que toute personne ne s expose ou n expose les autres au rayonnement sans pr caution de facon imprudente et inconsciente Il est important que toutes les personnes travaillant avec le rayonnement X soit correctement form es et prennent les mesures ad quates afin de se prot ger contre toute blessure Le constructeur suppose que tous les utilisateurs et le personnel d entretien autoris utiliser installer calibrer et entretenir cet quipement est conscient du danger de l exposition excessive au rayonnement X est suffisamment form et poss de les connaissances n cessaires pour cela L quipement d crit dans le pr sent manuel est vendu sous r serve que le fabricant ses agents et repr sentants ne soient pas tenus pour responsables des blessures ou dommages qui pourraient r sulter d une exposition aux rayons X Plusieurs mat riels de protection et syst mes sont disponibles L utilisation de ces mat riels et syst mes de protection est recommand e DECLARACION AMBIENTAL SOBRE LA VIDA UTIL DEL EQUIPO O SISTEMA Este equipo o sistema contiene componentes y materiales peligrosos para el medioambiente tales como tarjetas de circuito impreso componentes electr nicos aceite diel ctrico usado
40. ured between 10 and 50 seconds by the engineer during the installation The Laser pointer also lits when Prep is pushed then the Collimator lamp switches off COLLIMATOR CONTROL KNOBS These knobs are used to open or close the Collimator blades in order to limitthe X ray beam The final image film may be checked switching on the Collimator Lamp The table on the Collimator shows the number to be set with the knobs to open the blades according to the SID Source Image Distance and film size to be used In order to apply the lowest Dose to patient it is recommended to use the larger SID that film size allows FILM SIZE 13 cm 5 18 cm 7 24 cm 10 30 cm 127 35 cm 147 40 cm 16 n a IMAGE RECEPTION AREA The collimator projects a lighted area with reference axis on the image reception area that coincides with X ray projection area OM 0269R5 27 Portable X Ray Units Operation 3 4 X RAY HANDSWITCH OFF Prep gt Exp A Radiographic exposures may also be initiated with the X ray handswitch which is connected to the Control Panel The X ray handswitch button has three positions Off Preparation and X ray Exposure which operate in the same way that Prep and Exp push buttons on the Control Panel Press the handswitch half way for Prep and fully for Exp 3 5 HEAT UNITS AND TEMPERATURE OF POWER MODULE Thi
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