Corix 70 Plus – USV - Dentalaire Products
Contents
1. i k Lip i 4 BEAM A D COLLAR CENTERING E DEVICE E SCREW 8 12 E L t w y KN a 1 _ w T 1 1 a ri po x P a c Pi i gt e m FIG 3 FIG 4 Kr 28 Corix 70 Plus USV Installation amp User s Manual 7 1 BEAM CENTERING DEVICE ASSEMBLY 1 Align the Beam Centering Device perpendicular to the Collar on the Tubehead around the x ray s exit window See Fig 4 Gently fully screw it in avoiding any damage to the threads After assembling the Tubehead all the operation specified on section 9 2 Arm Regulation must be performed Coramex S A is not responsible for any damage to the equipment the operator or to the patient caused by the incorrect installation and maintenance procedures as outlined in this Manual 8 0 ELECTRICAL CONNECTIONS TO THE CONTROL PANEL en LP an ae Na un a Fig 5 8 1 Opening the Control Panel 1 Remove the Front Cover of the Control Panel from the back Plate Unlock it by pressing the plastic button located on its upper side See Fig 5 2 Let the Front Cover hang upside down without straining the cables interconnecting the printed circuit boards2. FM WAIT JARAMA WAIT COOLIFHG TIME COOLING TIME Fig 18 Fig 19 If manual mode had been pre selected the display will show the screen presented in Fig 19 The message Wait cooling time will be flashing during the entire cooling cycle When the cooling cycle finishes the system will resume its last operation mode manual or automatic and the display will show the last pre selected values At this point the equipment is ready to take another exposure keeping the same selected values or if the operator wishes to change the parameters for a new exposure 9 6 MENU OPERATION MODE AND PARAMETER SET UP Once the Menu operation mode has been accessed the display will show the screen presented in Fig 20 FILHH DSEHSUR4 PPEHERTIHG TO SELECT 5l zEm TO SCROLL EXP COUNTER EXIT CALIBRATION FACTORS 1 22 Fig 20 On this screen at lower right a four digit voltmeter readout is shown The Main AC Power Supply Voltage is constantly monitored by this voltmeter There are several factory pre programmed parameters that the user may change To navigate through this screen three buttons are used Down Button DOWN to select a submenu Patient Button P SIZE to move among submenus Up Button to abandon submenus or the main menu 37 Corix 70 Plus USV Installation amp User s Manual 9 7 FILM DIGI
3. WM FOLDING ARM PART P502 USV MM FOLDING ARM PART P508 USV EXTENSION ARM PART P503 USV Seria X X XXX MM YYYY Seria X X XX X MM YYYY Seria XX XXX MM YYYY LABEL 8 LABEL 9 LABEL 10 MANUFACTURER CORAMEX S A MANUFACTURER CORAMEX S A MANUFACTURER CORAMEX S A LAURO VILLAR No 94 B LAURO VILLAR No 94 B LAURO VILLAR No 94 B 02440 MEXICO D F MEXICO 02440 MEXICO D F MEXICO 02440 MEXICO D F MEXICO PS FOLDING ARM PART P512 USV PORTABLE BASE PART P513 USV MOBILE BASE PART P509 USV Serial X X XX X MM YYYY Serial X X XX X MM YYYY Serial XX X X X MM YYYY 8 Corix 70 Plus USV Installation amp User s Manual 3 2 Equipment Parts A set of different models of the complete extraoral dental X Ray device share the certified components listed Model Corix 70 Plus USV WM Wall Mount Common Part X Ray Tube Housing Assembly Cat P500USV Beam Limiting Device Cat P501USV X Ray Button Standard Cat P507USV Control Panel Cat P506USV Particular Part Extension Arm Standard 80cm Cat P503USV Extension Arm Large 90cm optional Cat P504USV Extension Arm Short 35cm optional Cat 50505 Hemote X Ray button Kit optional Cat P514USV WM Folding Arm Cat P502USV Wall Plate Double stud Cat P510USV Wall Plate Single stud optional Cat P511USV Model Corix 70 Plus USV MM Mobile Stand Common Part X Ray Tube Housing Assembly Cat P500USV Beam Limiti
4. During radiation exposure only the operator and patient must be allowed in the room To reduce the unwanted effects of secondary radiation on the patient we suggest using the relevant leaded aprons 47 Corix 70 Plus USV Installation amp User s Manual 11 0 CHECKS AND CORRECTION OF POSSIBLE FAULTS IN DENTAL RADIOGRAPHS Light radiographs grainy image with the Insufficient exposure to X ray short time Digital Sensor Insufficient development time Deteriorated developer Developer temperature below recommended value Incorrect developing fluid dilution Dark radiographs Excessive exposure to X ray long time Excessive development time Developer temperature above recommended value Incorrect developing fluid dilution Blurred radiographs details not visible The patient moved The tubehead moved Partially exposed radiographs X ray directed off the film s mid section Low developmental fluid level with consequent partial film development Two or more films placed against each other during development Clouded radiographs Excessive film shelf life check expiration date Film accidentally exposed to X ray Film accidentally exposed to other natural or artificial light sources Radiograph showing a black line This line appears when the film is excessively folded Radiographs showing signs of electrostatic When film is compressed too much and the air charge is dry static electricity may be released discharging in the compensa
5. 8 4 9 Control Panel operating instructions and system operation 9 0 10 Protection against radiation 2 0 0 2 2 2 2 2 10 0 11 Checks and corrections of possible faults in dental radiography 11 0 IMaInteral 6B ne aa kapas arena 12 0 13 Environmental risks and disposal 13 0 14 Drawings and Electrical Schemes 14 0 2 Corix 70 Plus USV Installation amp User s Manual 1 0 INTRODUCTION Corix 70 Plus USV manufactured by Coramex S A performs high quality intra oral radiographs ensured by the repeatability of examination combined with reduced exposure times and a small focal spot Corix 70 Plus USV has a new Control Panel with a graphic LCD display with an array of flexible sub menu options and an easy pre set exposure timer This manual is intended to assist the user and installer in the safe and efficient operation and installation of the equipment described 2 0 SAFETY INFORMATION This manual provides all the necessary information for the correct handling of the equipment as well as warnings related to risks associated to X ray generators Coramex S A shall not be responsible for Any use of the equipment different from what it has been designed for damage to the equipment the operator or the patient caused by incorrect installation and mainte
6. Check for external damage in the Tubehead which may prejudice protection against radiation e Check Arm balancing e Check centering of the X Ray beam Checks should be performed before any operating session In case of irregularities the operator shall contact Technical Service 12 2 Arms Regulation See Fig 1 of section 12 4 Arms regulations do not require removal of Tubehead Arms regulation may be necessary in the following cases Folding Arm is not perfectly balanced in this case operate on spring regulation After a certain time arms balancing springs may sag Should this happen tubehead will no longer be balanced in all positions and spring calibration will be required 12 3 Balancing of the Folding Arm 1 Observe Arms to determine which one requires adjustment Anterior or Posterior 2 Position the Folding Arm as show in See Fig 1 of section 12 4 3 Locate and remove the Cover Plug of the Arm that requires adjustment 4 Insert the hexagonal key and rotate clockwise if the Arm tends to go down or rotate counter clockwise if the Arm tends to go up 5 Once adjustment is finished replace Cover Plug 49 Corix 70 Plus USV Installation amp User s Manual 12 4 Extension arm friction regulation Wall Mount version Make sure that the Extension Arm is leveled through a level otherwise the drift free condition could not be achieved There are 2 adjustment points for the Extension Arm Behind the plastic Cov
7. KEY When turning this switch on the unit is power supplied By pressing this key it is possible to select the size of the patient small medium large in the automatic timing exposure mode By pressing this key it is possible to select the pre programmed exposure times according the tooth Anatomic in the automatic exposure mode By pressing this key it is possible to increase the exposure time in the manual exposure mode By pressing this key it is possible to decrease the exposure time in the manual exposure mode The display shows to the user relevant information about the Control Panel operation By pressing the Hand Controller Button the exposure radiation will start 33 1 L i n DOWN KEY UP KEY HAND CONTROLLER E 1141 1 H KH E I II WEN ME Y il A A Fig 7 811 M RA Ao L i Ps Ca A a i Corix 70 Plus USV Installation amp User s Manual 9 1 TURNING THE EQUIPMENT ON When turning on the equipment the display will show the screen presented in Fig 1 This screen shows the Equipment Model and the software version At this point the equipment will execute a self testing procedure in order to early detect some kind of mal functioning This testing will take a few seconds Next the display will show the screen presented in Fig 2 At
8. Radiation Leakage at lt 50 mR h Technical Factors 70KVp 1 m 1s Exposure Interval 01 30 Duty Cycle The minimum Exposure Interval between exposures 30 time units of cooling time for every time unit of exposure is a Preset value in the Control Panel Unit Inherent Filtration Beam Limiting Device Part Designation Skin Distance SSD 200mm X Ray Field at Minimum SSD 60mm 15 Corix 70 Plus USV Installation amp User s Manual X RAY TUBEHEAD CURVES OX 70 P TUBE THERMAL CURVES lJ 7 anode current 200 W 150 W 110 W 80 W N 3 gt NJ EMISSION CHARACTERISTICS A 10 anode current 20 16 70 12 50 kV 4 4 24 2 6 2 8 3 0 3 2 filament voltage V COOLING CURVES OF TUBEHEAD HEAT STORAGE KJ 200 180 160 140 120 100 80 60 40 20 RATING CHARTS 1 exposure time sec 1 00 16 anode current 0 50 400 450 TIME min FILAMENT CHARACTERISTICS 2 1 lt 2 0 4 c 2 W 4 19 JS 1 8 2 4 3 2 filament voltage 35 mA 3
9. as indicated on Fig 1 Note Retaining wedge is located under the cover 27 Corix 70 Plus USV Installation amp User s Manual 3 Keep Folding Arm articulation at maximum height and slide the Plastic Cover over the Connection Post 4 located at the end of the Folding Arm See Fig 2 Completely insert the Tubehead male pivot Post into the female Connection Post at the Folding Arm 5 By holding the weight of the Tubehead fully insert the Retaining Wedge into the relevant Slot on the Connection Post of the Folding Arm Do it as indicated on Fig 2 and then slide down the Plastic Cover 7 over the Yoke 8 Make sure that the Retaining Wedge is fully inserted into the Slot and then press the Plastic Cover until it is again fully inserted over the Yoke Do it as indicated on Fig 3 At this point verify that the Tubehead is fully supported by its own weight and the Arm s spring tension Insert the 8 32 Safety Screw over the Plastic Cover of the Yoke and screw it back Do it as indicated on Fig 3 FI fa PLASTIC TUBEHEAD COVER wen P E 1 Hz d A woe La 4 f WEDGE yes 2 i i s ee del Ah 4 M i f j PLASTICCENER N i 52 AE i l UBEHEAD _ III KL ae 2 p OPEN HEXAGONAL C JUR WRENCH canina I ca M SCISSORS ARM E pur i E
10. of the Extension Arm 1 4 Rotation Stop screw 30 Corix 70 Plus USV Installation amp User s Manual 8 3 Optional Wiring to the Control Panel Remote X Ray Button Configuration If the installation is wired to enable a Remote X Ray Button configuration make sure that the remote X Ray Buttons extension cable has been brought through the hole s in the back Plate Then remove from Receptacle J4 MAIN XRB on the Power Board the coiled cable connected to the standard X Ray Button provided with this unit take it apart and plug in the extension cable for the Remote X Ray Button or connect it to the Terminal Block J3 2 Interlocked X Ray Button Configuration To make the equipment compliant with the regulations in some countries where two separate and interlocked x ray buttons must be activated to allow the emission of x ray radiation the Control Panel is already wired to offer this option 1 Insert the cable coming from the 2 9 interlocked X Ray Button optional into Receptacle J5 SEC XRB on the Power Board Pass the cable through the spare strain relief Grommet located on the bottom side of the Front Cover Then remove Jumper JP1 from the Power Board By now only when both X Ray Buttons are pressed at the same time the x ray emission is enabled Installing the Corix Digital Sensor optional The Corix Digital Sensor has been designed to be fully compatible with this x ray equipment by providing a docking station for it i
11. relay driver maybe damaged Button damaged Harness damaged TRIACS damaged Exposure will end when safety relay is off or controlled by the back up timer 5 secs maximun exposure TRIACS and or safety relay damaged There is no exposure radiation Tubehead still supplied when turning TRIACS damaged the TRIACS off and safety relay is Exposure will end when safety relay is off or controlled by on during X Ray exposure secuence the back up timer 5 secs maximun exposure The control unit is constantly monitoring the Main Line Voltage If the line voltage is lower than 1096 of the nominal line voltage the display will show the message presented in the Fig 32 If the line voltage is higher than 1096 of the nominal line voltage the display will show the message presented in Fig 33 TT FARA Low LINE VOLTAGE 2 H Up BrA Fig 32 JOMAR HIGH i LIME WOLTAGE LECHHICAL FACTORS 11 Fig 33 40 Corix 70 Plus USV Installation amp User s Manual Once the line voltage returns to its operating range the control unit automatically resumes its operation and the display will show the screen presented in Fig 2 9 9 Positioning the tubehead a Arrange the tubehead with an angle suitable for the required exposure and positioning b Introduce the film into the patient s mouth according to the chosen technique bisecting or parallel c Move the beam limiting device
12. this point if the Up key is depressed within 5 seconds the Menu routine will be accessed If not the Main routine will be accessed LI LI Fr T m CORI 1 11 15 CORIM 51 15 VERO WEF 1 0 CE gap 1 00 EnP TIME SELF TESTING PRESS UP FOR MEHU 3 Fig 1 Fig 2 Fig 3 When the Main routine is accessed the display will show the screen presented in Fig 3 Once the Main routine is accessed it is possible to set pre programmed times for automatic exposures or set the timer in manual form Of course it is possible at any time to switch between automatic and manual time exposures 9 2 AUTOMATIC EXPOSURE TIME SELECTION To set an automatic exposure press Patient or Select key once The screen in Fig 4 will be shown Two arrow pointers indicate the Patient Size and the tooth anatomic On this screen the left arrow indicates upper incisor and the right arrow indicates small size patient AONE TEER D TEER i T 123 0 28 80888 133 EnP TIME EnP TIME EnP TIHE Fig 4 Fig 5 Fig 6 By pressing Patient key you can select progressively 3 different patient sizes The arrow pointer will indicate the patient size chosen Medium size selected Fig 5 Large size selected Fig 6 34 70 Plus USV Installation amp User s Manual he actual exposure times shown on these examples could be different depending to M
13. 0 25 20 15 40 kV 50 10 60M 70kM 0 0 01 sec 100 Corix 70 Plus USV exposure time 500 Installation amp User s Manual 150W 120W 12 mA RATING CHARTS 12 mA 90 W OCX 70 G TUBE THERMAL CURVES 5 70W 4 3 2 1 0 0 1 2 3 4 min 5 FILAMENT AND EMISSION CHARACTERISTICS 3 5 10 9 8 3 0 2 70 kV E 7 6 25 50 kV 0 5 49 6 2 1 5 1 2 0 3 0 4 0 5 0 1 5 2 0 2 5 3 0 3 5 filament voltage V filament voltage V Rg R 12 A 75 kV A 10 6 c z 5 4 5 v E 2 c m 0 0 2 0 0 2 0 4 0 filamentvoltage V filament voltage V 10 10 anode current anode current 0 01 0 1 1 10 sec 100 exposure time 17 Corix 70 Plus USV Installation amp User s Manual 0 1 i exposure time Uu n 4 1 AUTOMATIC EXPOSURE TIME COMPENSATION The X Ray equipment includes a special characteristic which automatically compensates the exposure ti
14. 3 Make sure power wires are brought into the Control Panel through the hole s in the back Plate and prepare for electrical installation 20 Corix 70 Plus USV Installation amp User s Manual 18 VAC IM ji F OUT USB REMOTE POWER BOARD X RAY BUTTON P N P0252 REV 2 3 Fig 6 8 2 Control Panel Assembly See Fig 6 The device must be connected to a properly grounded power source Follow all applicable electrical regulations Use dedicated lines with the correct gauge and circuit breakers Refer to section 5 1 for appropriate wire size 1 Insert power cables from the wall source into the Terminal Block J2 VAC IN of the Power Board by means of a bipolar cable ground whose minimum gauge is specified at section 5 1 With a screwdriver tight them into the appropriate terminal on the Terminal Block Labels indicate the following L Line black wire N Neutral white wire G Ground wire green cable Note Mod Corix 70 Plus USV MM Mobile Mount has the power cable already connected by the Manufacturer to the Power Board 2 Make sure Tubehead cables are brought through the Arm into the Control Panel Insert them into the Terminal Block J8 L OUT N OUT of the Power Board Labels indicate the following L Line black wire N Neutral white wire With a screwdriver tighten them into the appropriate terminal on the Terminal Block 3 Insert again on the rotation pivot
15. 5007 200mg CHI 1 80 Texp 0 2secs PHT 0 23secs IEC 60601 2 7 1998 regulations reads in equipment where the filament is switched on and high voltage is applied simultaneously the exposure time is calculated as the interval between the instant when the anodic current exceeds 25 of the nominal value and the instant when it goes below such value This method of measurement is defined as invasive because it requires that the anodic current be quantified through the voltage drop of a resistance inside the tubehead The last figure shows the anodic current wave form for an exposure of 0 2s with a pre heating time of 0 23s It can be seen that the time named Delta 20 Corix 70 Plus USV Installation amp User s Manual measured in the interval when the anodic current exceeds 25 represents the actual exposure time 204 0ms Although non invasive methods can be simpler to perform than the invasive methods they may lead to errors which can be considerable when determining exposure time Calculations of exposure time obtained by using non invasive methods may lead to the conclusion that the unit timer is not accurate enough to meet the regulations refer to section 4 3 Practical Procedures for Measuring Technical Factors 5 0 PRE INSTALLATION Proper planning prior to installation is required There are three areas of concern before installation 1 Mounting structure 2 Reach of the tubehead 3 Electri
16. Coramex S A Corix 70 Plus USV Installation amp User s Manual Release 1 2 May 2009 CONTENTS Section J 811 19 51 61 MM TERT 1 0 22581611 sleale 2 0 WV NING Si cee 2 1 4 MM 3 0 Labels cca 3 1 P alls tenen 3 2 GODIIQUEFallOLS elle iaia 3 3 4 Technical FERlUres ilaele 4 0 5 Presinstaliationi esordendo 5 0 05 5 1 Ze ASAAN ausser euin ic a 6 0 Corix 70 Plus USV WM Wall Mount 6 2 Installation of options for Wall Mount model 6 3 Corix 70 Plus USV MM Mobile Stand 6 4 Corix 70 Plus USV PS Portable Stand 6 5 Folding and Extension Arm assembly Wall Mount 6 6 Folding Arm assembly Mobile Stand 6 7 Folding Arm assembly Portable Stand 6 8 nee 7 0 Electrical connections to the Control Panel 8 0 Optional wiring to the Control Panel 8 3 9 PONCUONING xu s uuu a ua ue epe
17. EHEATING TO SELECT 0 1 SELECT PREHEATING TO SELECT L U E aP SIZE SCROLL 3 af SIZE TO SCROLL L L C sP_SIZE TO SCROLL EXP COUNTER TO EXIT TI EXIT EnF COUNTER TO EXIT CALIBRATION FACTORS 1 22 3 CALIBRATIOH FACTORS 1 223 Fig 29 Fig 30 Fig 31 In this sub menu three compensation factors can be selected By pressing Down key the display will show the screen presented in Fig 30 Occasionally the end user may need to use other timer settings than those preset at the factory For example when different types of film speeds are required The unit is capable of automatically varying these values to reflect the new time setting required The factory pre programmed compensation factor is 1 0 By pressing Patient size key it is possible to choose between 0 7 and 1 3 factors These factors only affect the pre programmed automatic exposure times To decrease the pre programmed times 0 7 factor should be selected To increase the pre programmed times 1 3 factor should be selected The pre programmed exposure times shall be multiplied by these factors and the display will show the modified exposure time To exit this sub menu Up key should be depressed Now the display will show the screen presented in Fig 31 Up to this point if you wish to change again any parameters follow the procedure already explained If not press Up key to exit the menu o
18. LACE ONLY WITH SAME TYPE AND RATING OF FUSE LABEL 2 LABEL 4 MANUFACTURER CORAMEX S A LAURO VILLAR No 94 B 02440 MEXICO D F MEXICO CONTROL PANEL P N P506 USV FOR MOD CORIX 70 PLUS USV LINE VOLTAGE 120 Vac 10 10 Amp 50 60 Hz CLASS 1 TYPE B SERIAL No XXXXX EXPOSURE RANGE 0 03 3 00 Sec 41096 MANUFACTURED MM YYYY MEXICO COMPLIES WITH DHHS PERFORMANCE STANDARD 21CFR SUBCHAPTER J COMPLIES WITH UL 2606 MANUFACTURER CORAMEX S A LAURO VILLAR No 94 B 02440 MEXICO D F MEXICO BEAM LIMITING DEVICE PART P501 USV SOURCE TO SKIN DISTANCE SSD 20 cm X RAY FIELD AT MINIMUM SSD 6 cm LABEL 3 MANUFACTURER CORAMEX S A K LAURO VILLAR No 94 B 02440 MEXICO D F MEXICO SERIAL No MOD CORIX 70 PLUS USV PART P500 USV X RAY TUBE HOUSING ASSEMBLY RATED PEAK TUBE POTENTIAL 70 KVp x 796 MANUFACTURED RATED TUBE CURRENT 8mA 15 TOTAL FILTRATION 2mm Al SERIAL No FOCAL SPOT 0 8mm MEXICO MANUFACTURED MM YYYY MEXICO X RAY TUBE sd ITALY MOD 70 S N XXXXX COMPLIES WITH DHHS PERFORMANCE STANDARD 21CFR SUBCHAPTER J COMPLIES WITH DHHS PERFORMANCE STANDARD 21 CFR SUBCHARTER J LABEL 5 LABEL 6 LABEL 7 MANUFACTURER CORAMEX S A LAURO VILLAR No 94 B 02440 MEXICO D F MEXICO MANUFACTURER CORAMEX S A MANUFACTURER CORAMEX S A LAURO VILLAR No 94 B 02440 MEXICO D F MEXICO LAURO VILLAR No 94 B 02440 MEXICO D F MEXICO
19. ROLL COUNTER Pe TO EXIT mlilPm TU EXIT EnF COUNTER EXIT CALIBRATION CALIBRATION FACTORS 1 2 21 FACTORS 1 062 Fig 24 Fig 25 Fig 26 The Line Voltage Compensation L V C can be disabled or enabled with this sub menu By pressing Down key the screen presented in Fig 25 will be shown The factory pre programmed L V C status is enabled The arrow points to the word YES To disable this function press Patient key to point the word NO To exit this sub menu Up key should be depressed see Fig 26 38 Corix 70 Plus USV Installation amp User s Manual By selecting this sub menu pressing Down key the number of exposures taken with the equipment will be shown see Fig 27 FlLH DS5EHSUR PRESS KE FILH DSEHSOR PRESSREY PREHEATING TO SELECT SELECT PFEHERTIHG TO SELECT LALE 51 2 0 SCROLL af 51 2 LHC 2 SCROLL EAP COUNTER EXIT u Pu TU EXIT EnF COUNTER EXIT CALIBRATION CALIBRATION FACTORS FACTORS 122 3 0024 122 3 Fig 26 Fig 27 Fig 28 By pressing Up key the display will show the screen presented in Fig 28 The Calibration sub menu is intended to be used only by the Factory By pressing Patient key the display will show the screen presented in Fig 29 FILH DSEHSOR PRESSKEN FILH DSEHS0R4 PRESSKEY PR
20. TAL SENSOR SUBMENU By pressing Down key FILM DSENSOR submenu is accessed The display will show the screen presented in Fig 21 If traditional film is to be used the arrow should point to FILM If digital exposure is to be used the arrow should point to DSENSOR Digital Sensor The factory pre programmed option is always FILM To switch between the selections Patient size button should be depressed To exit this sub menu Up key should be depressed FILH PRESSKEY FILH DSEHSOR PRESS D en PRESBHE DSEHBDE 00 SELECT PREHEATING SELECT 0 23 SELECT sP_SiZEnTO SCROLL L U L af SIZE TO SCROLL 0 25 af 2 TO SCROLL 0 c8 EXIT sila TI EXIT ERP COUNTER slPa TUEHIT CALIBRATION FACTORS 1 22 3 Fig 21 Fig 22 Fig 23 After pressing down Up key the display will show the screen presented in Fig 22 In this sub menu the Pre heating Time can be modified By pressing Down key the display will show the screen presented in Fig 23 The factory pre programmed pre heating time value is 0 235 To select a different value press Patient size key To exit this sub menu Up key should be depressed see Fig 24 FILM D5EHSOR PRESS RE veg PRESSKEY FILH DSFH5IP PRESSKE PFEHERTIHG TO SELECT HO TO SELECT PREHEATING TO SELECT L U E aP_SIZEnTO SCROLL sP_SizEnTO SCROLL L L C af 5iZEn TO SC
21. TE In this phase since the Arm assembly is not supporting the Tubehead weight it is recommended to keep the Extension Arm tilted up by about 4 mm at its end this allowing a leveled Extension Arm after the Tubehead assembly 4 Follow section 7 0 for assembling the Tubehead 6 7 Folding Arm assembly Mobile Stand NOTE Do not free Folding Arm from safety belt 1 Mount Folding Arm on Control Panel by inserting rotation pivot in the relevant thimble Keep Arm in orthogonal position with respect to Stand 2 Check that Folding Arm is leveled 3 Follow section 7 0 for assembling the Tubehead 6 8 Folding Arm assembly Portable Stand 1 Mount Folding Arm on Control Panel by inserting rotation pivot in the relevant thimble Keep Arm in orthogonal position with respect to Stand 7 0 TUBEHEAD ASSEMBLY For installation of Tubehead assembly please follow the steps listed below gt Warning Folding Arm has powerful loaded spring inside Severe damage or injury may be caused by removing the Safety Strap and free releasing it Instead hold the Arm firmly together and then after removing the Safety Strap do release the Arm tension SLOWLY by holding it all the time at its end until it is fully opened at 90 deg 1 Release the Safety Strap and open the Folding Arm as indicated 2 By means of an 3 32 hexagonal wrench 1 remove the 8 32 Safety ocrew and take away the Plastic Cover 2 from the Yoke of Tubehead 3 Do it
22. ain Voltage variations In order to select a required tooth anatomic Select key should be depressed Doing this it is possible to choose among 9 different teeth anatomic Upper incisor selected Fig 7 Upper canine selected Fig 8 Upper premolar selected Fig 9 T SOBA 033 SARA 133 0405 EWP TIME EnP TIME EnP TIME Fig 7 Fig 8 Fig 9 Upper molar selected Fig 10 Lower incisor selected Fig 11 Lower canine selected Fig 12 BOARR 0454 0 24 BOHRRF 0 29 t EXP TIME t EWP TIME Fig 10 Fig 11 Fig 12 Lower premolar selected Fig 13 Lower molar selected Fig 14 Bite wing selected Fig 15 T f 1 29 80 0 34 SBEEBI 1 33 AP TIME t EXP TIME ERP TIME TECHHICAL FACTORS 10 TECHHICAL FACTORS 10 KUlp rof TECHHICAL FACTORS 10 EUp BrAH Fig 13 Fig 14 Fig 15 35 Corix 70 Plus USV Installation amp User s Manual 9 3 MANUAL EXPOSURE TIME SELECTION If manual selection operation mode is preferred you can switch to Manual Exposure Time Mode by pressing down Up or Down key at any moment To increase the exposure time Up key should be depressed and Down key to decrease it When in manual mode main voltage variation compensation is always disabled and the arrow pointers indicating patient size and tooth anatomi
23. ble stand mounting are present 1 Position Base on table to be used 2 Fix the removable Legs into the Base 3 Follow section 6 8 for assembling the Arm 25 Corix 70 Plus USV Installation amp User s Manual 6 6 Folding and Extension Arm assembly Wall Mount Warning Do not remove safety belt from scissors arm The Scissors Arm is spring loaded and its release may be dangerous to the installer Only qualified technicians should attempt installation of this type of equipment By means of tape put the Folding Arm cable and Extension Arm traction wire together Pull wire until cable appears then separate cable from traction wire and introduce Folding Arm pivot into Extension Arm lt Traction Wire Rotation Pivot Extension Arm 2 lt lt 2 TOT Safety Belts Friction to N De Folding Calibration 520 Do not free Folding Arm from safety belt 1 By means of 3 16 hexagonal wrench remove the 1 4 Rotation Stop screw located on the rotation pivot of the Extension Arm and save it 2 Mount complete Arm on Control Panel by inserting rotation pivot into the relevant thimble Keep Arm in orthogonal position with respect to Wall Plate 3 Check that the Extension Arm this leveled through a level the Wall Plate should be leveled horizontal and vertical if is necessary can wear the plate against the wall to obtain the level desired 26 Corix 70 Plus USV Installation amp User s Manual NO
24. c will disappear as shown in the screen presented in Fig 16 ma T T T EXP TIME T ABORTED NES PRESS AHY KEY Fig 16 Fig 17 9 4 STARTING AN EXPOSURE After having selected the exposure time in automatic or manual mode the system will be prepared to start an X Ray exposure A green LED identified as Ready located at the Control Panel see section 9 0 will turn on indicating that an exposure can be started immediately To start an exposure press down the X Ray button located at the Remote Control see section 9 0 An amber LED identified as X ray located at the Control Panel see section 9 0 will turn on and an audio feedback warning sound will be emitted The initial exposure time indicated on the LCD Display will be decremented to 0 00 sec WARNING X Ray button must be kept depressed throughout the exposure If the patient should move during the examination the button must be released thereby interrupting the emission If the X Ray button is released before the end of the exposure time the Warning Message presented in Fig 17 will be shown on the display alerting the user that the exposure was aborted 36 Corix 70 Plus USV Installation amp User s Manual 9 5 COOLING TIME MODE Once the exposure is finished the system will turn to the cooling time cycle During this period the equipment is not enabled to take an exposure The display will show the screen presented in Fig 18
25. cal connections Warning Precise and safe installation of the Corix 70 Plus USV is the full responsibility of the installer Inappropriate installation of the equipment may cause it to drop from its support resulting in damage to individuals and materials near its range The manufacturer fully disclaims any responsibility expressed or implied by the actions of the installer Different wall structures require different type of fasteners It is the responsibility of the installer to use the appropriate fasteners Always making sure that the installation is properly leveled Judgment of wall sturdiness is left to the installer Fixing bosses to be used for each type of wall are the following gt Concrete walls expansion steel anchors Wooden studs self threading screws Hollow bricks chemical bosses 5 1 Electrical Features The supply line must meet the requirements specified on Label 2 located on the Control Panel 120 VAC 1096 10 Amp 50 60 Hz single phase mains voltage ground Or 230 VAC 10 6 Amp 50 60 Hz single phase mains voltage ground 2 Corix 70 Plus USV Installation amp User s Manual The equipment must be wired to an electrical panel whose characteristics comply with the electrical regulations in the country where it is installed A dedicated line protected by a 10A circuit breaker is recommended The general ground connection must be performed according to standards o
26. ctions are set at standard values and are tested at the factory during final tests Some of the functions may be regulated by Service engineers according to specific requirements 4 X Ray emission tests imply emission of radiation Follow all applicable regulations and safety precautions Position a fluorescent screen for radiation visualization at the distal end of the Beam Centering Device and then press the X Ray Button A Buzzer will sound indicating x ray emission and both the X Ray LED located on the Control Panel and the fluorescent screen will light up for the set exposure time 32 Corix 70 Plus USV Installation amp User s Manual 9 0 CONTROL PANEL OPERATING INSTRUCTIONS The Control Panel Unit includes the Power Board PCB and the Logic Control PCB The purpose of the Power Board is to supply the Main Voltage to the Tubehead The Logic PCB controls the exposure timing The Timer is built around a microcontroller IC which contains preset exposure times and Main Supply voltage variation algorithm compensations By means of four keys the user is able to select pre programmed exposure times or manual exposure times The Control Panel contains an LCD Graphic Display which allows the user to operate the timer Figure 7 shows the Control Panel main features Main Switch Patient Key Select Key Up Key A Down Key V LCD Display Hand Controller LCD DISP READY SELECT KEY MAIN SWITCH PATIENT
27. ecessary it may be changed by the user EEBEDE E 11111553 m dth dHE 51 Corix 70 Plus USV Installation amp User s Manual 12 6 FUSES FUSE TABLE 120VAC 230VAC 10AF 6 3 x 32 8 6 3 x 32 10AF 6 3 x 32 8AF 6 3x 32 SOOMAF 6 3 x 32 500mAF 6 3 x 32 12 7 CLEANING AND DISINFECTING Gently wipe metal and plastic components with damp cloth and dry Use liquid soap Do not drip liquids inside the enclosures 13 0 ENVIRONMENTAL RISKS AND DISPOSAL Upon completing the product s life cycle it must be disposed according to your local laws The equipment contains the following materials or components Glass copper iron lead mineral oil rubber semiconductors and non biodegradable plastic materials The manufacturer will not be responsible for the disposal of the product 52 Corix 70 Plus USV Installation amp User s Manual 14 0 DRAWINGS AND ELECTRICAL SCHEMES CORIX 70 PLUS USV WALL MOUNT EXTENSION ARM A T TAL p TOTAL INSIDE REACH C EXTENCION TOTAL REACH B TOTAL INSIDE DISTANCE D REACH C 13 3 4 35 cm 25 3 4 65 4 cm 53 3 8 135 6 cm 2 3 8 69 4 cm SI 31 1 2 80 cm 43 1 2 110 5 cm 71 1 8 180 6 cm 45 114 4 cm 35 3 8 90 cm 47 1 2 120 6 cm 75 190 6 cm 49 124 4 cm 86 5 219 7 cm 57 1 8 145 cm DISTANCE D FLOOR LEVEL 53 Corix 70 Plus USV Installation amp User s Manual Electrical Sc
28. either manually or by means of the relevant holders it must never be held by the operator and only the patient may hold it if required Parts of the equipment that may be in contact with the patient must be regularly cleaned following the instruction provided in this manual The equipment is not designed to be used in the presence of flammable anesthetics oxygen or nitrous oxide Before performing any maintenance intervention the equipment must be disconnected from the input line voltage by means of the relevant circuit breaker 4 Corix 70 Plus USV Installation amp User s Manual 3 0 DESCRIPTION 3 1 Identification labels SL Bez 2 2 12 m3 IL SER 2 Y Q 5 Corix 70 Plus USV Installation amp User s Manual LABELING CORIX 70 PLUS USV MM MOBILE STAND Siete umm E n ns i 9 CW Corix 70 Plus USV Installation amp User s Manual LABELING CORIX 70 PLUS USV PS PORTABLE STAND Corix 70 Plus USV Installation amp User s Manual LABEL 1 Corix 70 PLUS USV 8 CORIX MEDICAL SYSTEMS WARNING THIS X RAY UNIT MAY BE DANGEROUS TO PATIENT AND OPERATOR UNLESS SAFE EXPOSURE FACTORS AND OPERATING INSTRUCTIONS ARE OBSERVED ELECTRICAL SHOCK HAZARD DO NOT REMOVE PANELS RISK OF EXPLOSION DO NOT USE IN PRESENCE OF FLAMMABLE ANESTHETICS FOR CONTINUED PROTECTION AGAINST RISK OF FIRE REP
29. er at the Folding Arm s end Inside the Control Panel where the rotation pivot is inserted 1 Locate and remove the plastic Cover at the end of the arm and open the Control Panel see instruction at section 8 1 2 Access the friction setting screws 3 Regulate friction by means of an 3 2 mm 1 8 hexagonal wrench and check arm rotation 4 Once friction adjustment is achieved replace Covers 1727 Hexagonal Key Gover Plug c Folding Arm a ASC rice Extension Arm 7 4 be Te ka k mu TN e n w 5 i Bc 4407 Cover au a e E a ug g a p Se Folding Arm S Postonar setting 5 cI aw 383 derail 1 TI C m Cover Hexagonal Fig 1 DETAIL 50 Corix 70 Plus USV Installation amp User s Manual 12 5 LOGIC BOARD ADJUSTMENTS AND SETTINGS a Nominal Operating Line Voltage Setting This setting is controlled by de Dip Switch SWI see Fig 2 according to the next table Rated fine Voltage _ The Dip Switch is preset in the Factory and must never be changed by the user b Internal Voltmeter Calibration This adjustment is controlled by the Trimmer POT1 see Fig 2 It is preset in the Factory and must never be charged by the user c LCD Display Contrast Adjustment This adjustment is controlled by the Trimmer POT2 see Fig 2 It is preset in the Factory and if n
30. f the region Inadequate ground connection of the equipment may represent a hazard for the operator and or cause the electrical equipment to malfunction Maximum distance between electrical panel and supply terminal block varies according to the section of supply wires and is reported in following table 120 V ac 50 60 Hz Minimum Required Wire wire Run Distance Size 3 3mm 7 5 Meters 15 Meters 10 AWG PRETI errr 75 Feet 5 3mm 22 5 Meters For 230 VAC supply use wires whose section is not less than 2 1 mm 14 AWG For proper functioning the equipment must be installed in air conditioned environments having the following characteristics Relative humidity 50 7596 not condensing Temperature 18 28C 6 0 INSTALLATION Warning Coramex S A is not responsible for any damage to the equipment the operator or to the patient caused by the incorrect installation and maintenance not compliant with the procedures contained in the relevant Installation amp User s manuals or by incorrect operation techniques 22 Corix 70 Plus USV Installation amp User s Manual 6 1 Wall Mobile and Portable mounting Installation 6 2 CORIX 70 PLUS USV WM WALL MOUNT Standard Double Stud Plate The installer must verify the consistency of the wall and must keep in mind that each set pin can carry a load of 200kg 440 pounds If the wall can support this weight expansion metal steel anchors can be used If the fixing
31. hemes XR A Uem EN CORDS 70 FLAS DV COREL To PLUS C5 V POWER BOARD HOARE LAY AT ASSY PA PUT ASST PH CORDIC TO ELECTRIC DIAGRAM 54 Corix 70 Plus USV Installation amp User s Manual CORAMEX S A A Division of CORIX MEDICAL SYSTEMS Lauro Villar No 94 B 02440 Mexico D F Mexico Tel 452 55 5394 1199 Fax 52 55 5394 8120 WWW CoOrix us EXCLUSIVE AGENT FOR THE U S A Chicago X Ray Systems Inc Tel 847 459 3889 800 870 2792 Fax 847 459 9214 chicagoxray Q yahoo com www chicagox ray com Corix 70 Plus USV Installation amp User s Manual Cat P146USV Release 1 2 2009 Corix and Corix Medical Systems are Registered Trademarks of Coramex S A 55 Corix 70 Plus USV Installation amp User s Manual
32. me when the line voltage is different from its nominal value Line voltage variation affects the peak voltage applied to the Tubehead and this in turn affects the optimal density and contrast visual characteristics of the film or digital systems With the automatic correction it is possible to achieve the same optical quality of the image even with variations in line voltage This automatic correction covers the range of 10 of the nominal line voltage To perform the time compensation the Control Panel constantly takes samples of the line voltage When the user chooses a pre programmed selection the exposure time corresponding to that selection is shown on the display If there is a variation of the line voltage before the exposure had been taken the Control Panel automatically calculates the corrected exposure time and shows it on the display The value of the correction factor has been determined empirically by measuring the radiation dose against the line voltage keeping the exposure time constant and then determining the correction factor in the exposure time required to keep the radiation dose constant against the line voltage The following graphic shows the relationship between the correction factor and the line voltage 2 00 CORRECTION FACTOR 105 110 115 120 125 130 135 LINE VOLTAGE It is possible to enable or disable the automatic line voltage compensation when taking pre programmed selections For manual exposure time
33. n the Control Panel Follow the Corix Sensor Instruction Manual for installing the Sensor on the Tubehead Insert the USB cable coming from the Sensor into Receptacle USB IN on the Power Board Then connect an USB extension cable between the computer and the Control Panel by inserting it into Receptacle USB OUT on the Power Board Pass the cables through the spare strain relief Grommets located on the bottom side of the Front Cover When the electrical connections to the Control Panel are done check that all wires are properly connected and then close again the Front Cover Be careful to position first the bottom side of the Front Cover into the bottom side of the Back Plate push the upper side of the Front Cover against the upper side of the Back Plate until it is firmly set 31 Corix 70 Plus USV Installation amp User s Manual 8 4 Final Functioning Tests 1 Make sure that the supply line meets the requirements specified on Label 2 located on the Control Panel and that the equipment is properly grounded Inadequate ground connection may represent a hazard to the operator or patient or cause a malfunction 2 Set circuit breaker line switch to the ON position and then set the Power Switch located on the Control Panel in the ON position Verify that the Power Switch is now illuminated 3 Follow section 9 0 CONTROL PANEL OPERATING INSTRUCTIONS and verify step by step the proper operation of the equipment All equipment fun
34. nance not compliant with the procedures contained in the relevant users and installation manuals or by incorrect operation techniques Any mechanical and or electrical changes caused during or after installation different from those reported in the service manual expenses related to the eventual disposal of the equipment or parts 2 1 Warnings The equipment must be used in compliance with the procedures contained in the present manual and shall never be used for purposes other than those it was designed for Only qualified service personnel are allowed to perform technical interventions on the equipment and to remove the tubehead from its support and access the internal components There is risk of injury if proper procedures are not followed The user bears legal responsibility related to the possession installation and use of the equipment Corix 70 Plus USV is a dental imaging device and must be used only under the supervision of qualified staff with knowledge in the field of protection against radiation 3 Corix 70 Plus USV Installation amp User s Manual To protect the patient from X ray radiation protection accessories such as standard leaded aprons must be used The Tubehead cover or the relevant Beam Centering Device should not be touched during X ray emission No objects i e lead aprons should be hung from the extension arms The film or the digital sensor must be introduced in the patient s mouth
35. near the patients and direct it exactly towards the tooth under examination by referring to the following figures a Mandible PREMOLARS Figure 1 41 Corix 70 Plus USV Installation amp User s Manual b Maxilla PREMOLARS Figure 2 42 Corix 70 Plus USV Installation amp User s Manual UPPER JAW Figure 3 Bite Wing Film MAIN BEAM UT Figure 4 43 Corix 70 Plus USV Installation amp User s Manual Exposure techniques This section describes the different techniques normally used for intra oral x ray exposure Bisecting technique Main beam incidence Vertical angle To obtain a true image of the tooth the main beam must be perpendicular to the bisecting plane of the angle formed by the longitudinal tooth axis and the film Once head and film position have been set according to these criteria an average vertical incidence can be used for each area The angle of incidence of the main beam can be correctly measured by means of the graduated scale fixed onto the tubehead Bisecting Technique Main beam incidence Vertical angle Key to Figure A Longitudinal axis of tooth B Bisector C Film Plane D Occlusal Plane MB Main Beam Figure 5 44 Corix 70 Plus USV Installation amp User s Manual Main beam incidence Horizontal direction The main beam must be correctly adjusted horizontally in particular in an orthoradial direction as regards interproximal spaces See Fig
36. ng Device Cat P501USV X Ray Button Standard Cat P507USV Control Panel Cat P506USV Particular Part MM Folding Arm Cat P508USV Mobile Base Cat P509USV Model Corix 70 Plus USV PS Portable Stand Common Part X Ray Tube Housing Assembly Cat P500USV Beam Limiting Device Cat P501USV X Ray Button Standard Cat P507USV Control Panel Cat P506USV Particular Part PS Folding Arm Cat P512USV Portable Base Cat P513USV 9 Corix 70 Plus USV Installation amp User s Manual Ae amp x QUE eguo BEEN t osue E 4 ui z kak INNOW TIAA peeuedqn 1 WAA ASN 07 MIHOD puepue s suogeInbjuon ec Corix 70 Plus Installation amp User s Manual 10 G UE 051053 tr Worm els PUPO Z Loving 3 EOINSM INAC TIVA INAA ASM 511407 jguondo uogeanDuuo uojng Agyi x 9 Corix 70 Plus USV Installation amp User s Manual 11 A amp u x G PUES SOW P nuo uv Buipio 2 1 ONVLS 31801N 5 1 5011404 uogejnbguo pues eqoj 2 Corix 70 Plus USV Installation amp User s Manual 12 uong G PUES F Lu Supoa Z 255 CQNYIS318vLHOdg Sd ASO 50714 Of 1 11107 pues p Corix 70 Plus USV I
37. nstallation amp User s Manual 13 4 0 TECHNICAL FEATURES Technical Features Equipment Extraoral Source X Ray Imaging System General Purpose Dental Manufacturer Coramex S A Lauro Villar 94 B M xico D F 02440 M xico Apparent Line Line Voltage Control Panel with Microprocessor controlled Digital Timer Safety Relay and X Ray Control Back Up Timer P506USV Control Panel with Main Part Designation Terminals Device Exposure Times Manual Time Selection from 0 03 s to 3 00 s in steps of 0 01s plus 27 preset exposure times with automatic line voltage compensation optional Pre heating time with 4 pre selected values 7 1096 or 32 ms whichever is greater Note Pre heating time is the time required by the tube to enable the correct radiation output When selecting an exposure time the display reads only the exposure time but for timing testing purposes the actual time is the Exposure Time plus the Pre heating Time previously selected 14 Corix 70 Plus USV Installation amp User s Manual Tube Housing Extra oral Diagnostic X Ray generator Assembly and Beam Limiting Device Part Designation P500USV Rated Output Voltage 70 KVp 10 Single phase self rectifying Rated Output Current 8 mA 159 rated line voltage Maximum Deviation of Output Current 4 5mA over the voltage range Total Filtration Transformer Insulation Oil Bath Thermal Convection Cooling
38. of this installation Most of the times this type of installation is used to mount onto a cabinet type structure or subdividing walls Installation to brick or concrete walls Use steel expansion anchors to secure the Wall Plate Follow proper shielding procedures Always secure the Wall Plate so as to make a solid fastening Sandy and hollow bricks may be dangerous Consider using all thread rods or bolts to go through walls and use another external fastener or clamp to hold baking in a secure place Remote X Ray Button configuration optional 1 For Remote X ray Button configuration see section 3 3 b install the optional Remote X ray Button outside the x ray room and bring the extension cable to the Wall Plate Follow section 6 2 for mounting the Wall Plate amp Control Panel Make sure that the extension cable is brought into the Control Panel through the hole s located in the rear of the Wall Plate 2 Follow sections 8 1 and 8 4 for connecting the Remote X ray Button extension cable to the relevant receptacle located inside the Control Panel 24 Corix 70 Plus USV Installation amp User s Manual 6 4 CORIX 70 PLUS USV MM MOBILE STAND 1 Make sure all parts for mobile mounting are present 2 Cross the two Base Legs and fix them together to the Column Make sure that the long side of the Legs are facing the front side of the equipment 3 Follow section 6 7 for assembling the Arm Make sure all parts for porta
39. peration mode 39 Corix 70 Plus USV Installation amp User s Manual 9 8 ERROR AND FUNCTIONAL MESSAGES The Control Panel is provided with a self diagnostic function which constantly monitors the system and its most important safety circuits When a problem occurs the system will show a message on the display to alert the user of this situation The next table shows a description of the error messages DISPLAY ERROR FAILURE TYPE PROCEDURE NUMBER 1 Tubehead block be power supplied continuously during start up secuence Tubehead block maybe power supplied when safety relay is activated during start up secuence Tubehead block maybe power supplied when safety relay is off and triacs are activated during start up secuence Patient size button closed at start up Tooth selection button closed at start up Increase button closed at start up Decrease button closed at start up X Ray button closed at start up EO2 EOS Tubehead supplied when closing safety relay and TRIACS are OFF during X Ray exposure secuence Tubehead not supplied when closing safety relay and TRIACS have been activated during X Ray exposure secuence Turn the power system off immediately Serious falilure of the power system Safety relay and TRIACS may be short circuited TRIACS maybe short circuited X Ray exposure is controlled only by the back up timer 5 secs maximun exposure Safety relay maybe short circuited Safety
40. position has wooden studs self threading screws of 8 x 40 mm can be used If the wall is not strong enough to support the weight of the x ray device it will be necessary to use the optional 4 synthetic set pins 12 mm with bushings 1 Check that all parts are present 2 Check wall consistency and mark holes for Wall Plate amp Control Panel mounting on wall in the selected position at a distance of 47 1200 mm from floor 3 Drill holes in wall and mount the Wall Plate Make sure Wall Plate is leveled 4 Make sure power wires are brought through the hole s located in the rear of the Wall Plate 5 Secure Wall Plate amp Control Panel to wall by using the appropriate screws 6 Follow section 6 6 for assembling the Arm 23 Corix 70 Plus USV Installation amp User s Manual 6 3 Installation of Options for mod CORIX 70 PLUS USV WM WALL MOUNT Warning The Manufacturer is not responsible for any damage to the equipment the operator or to the patient caused by the incorrect installation and maintenance procedures as outlined in this Manual Single Stud Plate optional This mount is available for those cases where an installation requires the use of a limited surface The term single stud means that the stud must be at least two 2 X 4 or two 2 x 6 inch studs sandwiched together The installer is reminded that this feature must be carefully used since the manufacturer makes no claim whatsoever as to the fitness
41. s the line voltage compensation is always disabled 18 Corix 70 Plus USV Installation amp User s Manual 4 2 PRE SET EXPOSURE TIMES The following table of pre set exposure times in seconds shows the rated exposure time for a nominal line voltage of 120VAC 230VAC and the final corrected exposure time as a function of the line voltage correction factor and patient size for the minimum 109VAC 207 VAC and maximum 132VAC 253VAC line voltage operating range LINE VOLTAGE 108V 207V 120V 230V 132V 253V LINE VOLTAGE CORRECTION 1 9 1 0 0 55 FACTOR UPPER JAW LOWER JAW T 05 T o o To or J sz P ss I o j 05 os s o or or P os J Su P o e Suggested exposure times in seconds for E type films For digital sensors refer to section 9 0 Control Panel Operating Instructions Film Digital Sensor Submenu e Film speed Factory pre set for E type Films e Corrected exposure times rounded to the nearest 1 100 of second e This table does not show the added Pre heating time selected for the x ray tube 4 3 PRACTICAL PROCEDURES FOR MEASURING TECHNICAL FACTORS KVp is defined as the high voltage value applied to the X Ray tube after pre heating time KVp value should be measured by a non invasive instrument with an accuracy of over 296 to the nominal value The anodic current value mA is defined as the average value of a steady state current through the X Ray tube after pre hea
42. ting time The anodic current value should be measured using a digital voltmeter To do this it is necessary to remove the Tubehead plastic covers This operation must be performed only by a qualified technician To take this measurement the digital voltmeter should be selected on DC and read the voltage drop at the ends of a 1 1 assembled on the Tubehead The relation of transformation is given by 1mA 1V Execute an exposure of at least 1s 19 Corix 70 Plus USV Installation amp User s Manual The time interval measured from the moment where the anodic peak current first exceeds 25 of the steady state to the moment it again reaches 2596 when decreases is called the exposure time t When taking a measurement of this time nominal line voltage should be selected and a digital memory oscilloscope should be used to read the voltage drop across the 1KO resistor The pre heating time is the time taken for the anodic current to reach 25 of its steady state value 4 4 MEASURING EXPOSURE TIMES The use of non invasive equipment when measuring functional parameters of X Ray devices like exposure time has led to introduce some interpretation issues The root of these issues is due to the anodic current wave form which is represented in the next figure Tek d e Stop M Pos 200 0 8 CURSOR Type SMT Coe CHI Delta 204 0 5 4890217 dS Lh a Cursor 1 292 015 Cursor 2 436 015 af CH1 5 00Y CH2
43. tion points which display black marks Film with chemical spots Development and fixing fluid spattered on the film before development and fixing procedures produces spot on the radiograph such spots are Dark when caused by development fluid Light when caused by fixing fluid Film with emulsion coming off If the film is kept in a hot water bath too long e g throughout the whole night the emulsion may become softer and partially come off the film base After development the film will show scratches Typical defects caused by incorrect positioning Radiographs with elongated or shortened The main beam is not perpendicular to the image bisecting of the angle formed by the tooth longitudinal axis and the film Film with stretched out tip tooth Probably caused by excessive film folding inside patient s mouth 48 Corix 70 Plus USV Installation amp User s Manual 12 0 MAINTENANCE 12 1 General Features This equipment requires proper operation periodic maintenance and servicing The following precautions will ensure safe and effective functioning of the System Periodic maintenance consists of system checks directly performed by the operator and or by Technical Service Checks directly affected by the operator technician are e Check that labels are intact and properly secured e Check that Tubehead is free from oil residues e Check that standard coiled cable X Ray Button is not broken or worn out e
44. ure 6 in order to prevent structures from overlapping figure 7 Bisecting Technique Main beam incidence Horizontal direction MB MB S0000 Seo Figure 6 Figure 7 Correct position Wrong position MB Main Beam Parallel technique By this technique the film plane is placed parallel to the main axis of the tooth Because of the anatomic factors the film is usually positioned away from the lingual surface of teeth except in the case of molars When introduced into the patient s mouth the film rests on a support to prevent distortion The patient holds the support with his her teeth A full range of supports suitable for the different types of teeth is available on the market This technique provides more accurate and easily repeatable radiographs compared to the bisecting technique See figures 8 and 9 45 Corix 70 Plus USV Installation amp User s Manual Parallel Technique Horizontal section Film Figure 8 Vertical section Figure 9 46 Corix 70 Plus USV Installation amp User s Manual 10 0 PROTECTION AGAINST RADIATION Radiation protection is generally regulated by law Trained personnel only are allowed operation and use of the equipment The film digital sensor must be introduced into the patients mouth manually or by means of the relevant holders it must be held by the patient During radiation exposure the operator must not be in contact with the Tubehead or the Beam Centering Device
Download Pdf Manuals
Related Search