Villa Endos AC-P Dental X-Ray System
Contents
1. J 530 60 1 4 INNO Figure 8 Overall dimensions ceiling version ENDOS AC ACP CE 32 Rev 6 USER S MANUAL Technical data MEDICAL Figure 9 Overall dimensions Mobile Stand version Rev 6 33 ENDOS AC ACP CE USER S MANUAL General use instructions GENERAL USE INSTRUCTIONS 6 1 ENDOS timer Figure 10 Control keyboard ENDOS ACP 1 X ray emission yellow LED 10 Upper molar LED 2 Ready for X ray green LED 11 Lower molar LED 3 Exposure enabling READY 12 Premolars LED 4 Size selection key 13 Incisors Canines LED 5 Large size LED 14 Videography selection key 6 Medium size LED 15 Videography LED 7 Small size LED 16 Increase key 8 Tooth anatomic selection key 17 Decrease key 9 Bite wing LED 18 Three figure display ENDOS AC ACP CE 34 Rev 6 USER S MANUAL L General use instructions MEDICAL NOTE All automatic selections are indicated by switching on the relative luminous signalling at the bottom on the left of the symbol NOTE ENDOS timer is provided with a Stand By function so if no key is pressed for 5 minutes the timer goes into stand by low consumption indicated on the display by the presence of only the decimal point on the right To go back to the operative co2. USER S MANUAL General use instructions 6 3 Visual signals Equipment enabling signalling o When on the green signal O at the top left hand corner of the keyboard shows Ready for X rays condition where a touch of the X ray button starts exposure This exposure enabled condition stays until the exposure ends or for a pre set time variable during set up between 10 and 30 seconds default 15 seconds after which the condition itself is disabled in this case you must reactivate by touching the corresponding key again NOTE When the READY key is pressed not only will exposure be enabled but the equipment will also start displaying exposure time on the display calculated according to line voltage fluctuation compensation see paragraph 5 1 NOTE If the READY key has been disabled in system configuration the display will show the corrected exposure time only during exposure or holding the X ray button pressed at the end of it NOTE If you touch the X ray button when the enabling signal is not active no exposure occurs at the same time the display shows the latest actual exposure time Signal X RAY EMISSION The yellow luminous signal at the top right hand corner of the keyboard is activated if X rays being emitted signalling that emission is actually taking place Emission is also signalled by an acoustic signal Display showing exposure times The
3. User s Manual Release 13 July 2007 Rev 6 USER S MANUAL Revision history MEDICAL Revision history Rev Date Page s Modification description 0 07 02 03 Document approval 1 11 04 03 All Introduction of KAILONG China X ray tube Introduction of remote X ray button with light signaling of Ready or Exposure in progress Ref RDM 5599 25 09 03 All Remote timer version release 26 03 04 8 Notify body change for CE mark Ref RDM 5781 4 15 03 05 8 20 39 Editorial correction on Enabling Disabling the Ready key Modified the DP arm label Ref RDM 5938 RDM 6052 5 10 01 06 30 Dose linearity reference measurement time updated Ref RDM 6164 6 13 07 07 Directive 2002 96 EC information notice added Rev 6 ENDOS USER S MANUAL Revision history THIS PAGE IS INTENTIONALLY LEFT BLANK ENDOS AC ACP CE Rev 6 USER S MANUAL Contents Contents 1 INTRODUCTION 1 1 Icons in the manual 2 SAFETY ASPECTS 2 L WATHINGS ins NEE mu arts 2 2 Protection from X rays 2 3 Environmental risks and disposal 2 4 Symbols in use 3 CLEANING AND DISINFECTION 4 DESCRIPTION 4 1 Identification labels 4 2 Functions Models and Versions 4 2 1 Extension arm and scissors
4. 5 3 Correct use of dosimeters to measure exposure times The spread of non invasive equipment to measure the functional parameters of RX equipment has introduced a series of interpretation problems when measuring exposure times The source of the problem is in the characteristic rise curve of the RX tube s anodic current which is represented in the picture Fin 25 06 Anodic current 00 900m Time According to IEC60601 2 7 1998 regulations 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 is defined as invasive because it requires that the anodic current flowing through a resistance inside the tubehead must be measured Non invasive methods are definitely easier and faster compared with the invasive method but they are prone to errors which can be considerable when determining exposure time In fact some of these devices start counting exposure time as soon as a small quantity of radiation reaches the measuring chamber with the result that they take longer times than the ones determined by the invasive method applied by the manufacturer Consequently calculations obtained by these non invasive methods can erroneously lead to the conclusion that the equipment timer is not accurate Actually the
5. EE 2IPOUE filament voltage filament voltage Load 7 1 BEE SE Deas gt Jusen 2ipoue EEE 0 10 sec 0 1 exposure time Rev 6 26 ENDOS AC ACP CE USER S MANUAL 5 L LA Technical data SISTEMI Curve anode cooling 150 W 120 W kJ Curve tubehead cooling 160 120 E kJ 80 100 200 300 400 time min Rev 6 27 ENDOS USER S MANUAL L LA MEDICAL Technical data KL16 0 8 70G Feature of emission e Va 65kV 10 A Ro R 2ko A Sete EI e e Hie KZ BENE ZB rais E ES 5 aeE EECC EEG asp p d EE Se ITY 2 9 3 35 4 V RAK CH gt lt A A E B E B E E ENDOS AC ACP CE 28 Rev 6 USER S MANUAL Technical data MEDICAL Heat storage kJ Ie LATE WEE tubehead cooling 160 120 kJ 80 0 100 200 300 400 time min Rev 6 29 ENDOS AC ACP CE USER S MANUAL Technical data 5 5 Reference standard Enforceable regulations CEE 93 42 EN 60601 1 EN 60601 1 1 EN 60601 1 2 EN 60601 1 3 EN 60601 1 4 EN 60601 2 7 see NOTE EN 60601
6. Figure 3 Tubehead Scissors arm Dental chair extension arm 30 cm Dental chair connection Timer X ray button ENDOS AC ACP CE 14 Rev 6 USER S MANUAL Description SISTEM 4 3 4 Ceiling configuration Figure 4 Tubehead Scissors arm Ceiling extension arm Ceiling suspension plate Timer aoa Q M X ray button Rev 6 15 ENDOS AC ACP CE USER S MANUAL Description 4 3 5 Mobile stand configuration a A Q N Figure 5 Tubehead Scissors arm Mobile stand Timer X ray button ENDOS AC ACP CE 16 Rev 6 USER S MANUAL Description MEDICALI 4 3 6 Remote X ray button configuration Figure 6 Alternative 1 1 X ray button not supplied Alternative 2 2 X ray button light signalling of Ready or Exposure in progress supplied as kit P N 6661309500 Rev 6 17 ENDOS CE USER S MANUAL M Technical data 5 TECHNICAL DATA Technical features Manufacturer VILLA SISTEMI MEDICALI Buccinasco MI Class Class I with type B applied parts EN 60601 1 classification Protection level Standard Apparatus IP20 Automatic selection 30 pre set times only for ENDOS ACP Exposure time accuracy t 1096 or 20 ms whichever is greater see note paragraph 5 5 Single phase se
7. TEST phase one of the anomalies considered to be RE SETTABLE occurs the equipment enters a condition where the Anomaly signal is kept on display until you press one of the increase or decrease keys which take the equipment back to the stand by status showing the exposure time on the display NOTE When the equipment gets more Anomalies simultaneously touching the increase and decrease keys at the same time will show all the errors found on display in sequence The equipment enters the stand by status only after the last display has been reset and highlighted to the user EXAMPLE Selection keys SIZE and TOOTH ANATOMIC already pressed at the Power on TEST we will have penal E H 820 Xr IDLE ON The display signals the user the type of trouble found in the following Way DISPLAY ANOMALY Acoustic signal signal SIZE selection key pressed at start up Tooth ANATOMIC key pressed at start up Rev 6 63 ENDOS CE lt USER S MANUAL CLA STEM Messages on display 8 2 3 Errors in exposure phase Non closure of X ray relay DISPLAY ANOMALY type X ray exposure Checks and operations signal to execute X ray relay does not Exposure not Call Technical Service close within pre set time started Non aperture of X ray relay DISPLAY ANOMALY type X ray exposure Checks and operations signal to execute X ray relay does not Exposure finished Call Technic
8. difference is connected to the method adopted in measuring the exposure time ENDOS AC ACP CE 24 Rev 6 USER S MANUAL Technical data MED By using a tube with grid it is possible to reduce to the minimum the time required for the anodic current and as a consequence the dose adjustment to reach the steady state so there is very little difference between the exposure time measurement using the invasive and the non invasive method Corrective actions practical method can be applied to get round the problem which can be described this way e In a graph you report the values of times measured using the equipment compared with the ones displayed by the timer automatically corrected for the line variations the dots of the graph are interpolated with a straight line if possible by the least square method or more simply in a graphic way e You determine the intercept the axis of this straight line this can be assumed as the time value that the non invasive device adds to each measurement due to the radiation which reaches the device before the anodic current is 25 of its maximum value e Then you subtract this offset time from all the device measurements and you proceed with comparing the time measurements displayed by the timer Rev 6 25 ENDOS USER S MANUAL Technical data Curves tube features 5 4 OCX 70 G Feature of emission 70 KV l D o
9. display ENDOS AC ACP CE 52 Rev 6 USER S MANUAL Equipment use g If the exposure enabled key is pressed when the X ray button is already pressed the exposure is stopped and the related error will be signalled NOTE The real exposure time corrected according to the line voltage variation does not include the necessary pre ignition time so that the anodic current reaches 25 of the final value Rev 6 53 ENDOS CE USER S MANUAL L MEDICAL Equipment use 7 5 Special functions The user has the possibility of displaying 3 functional parameters 7 5 1 Counting the number of exposures made From the stand by status it is possible to display the number of exposures made from the last resetting by the following procedure a Press simultaneously and hold pressed the keys increase and decrease for more than 3 seconds the display will show the message P20 Release the two keys b To display the figure related to thousands e g 001 press one of the keys increase or decrease Press the key to display the figures between 0 999 16801 The example shown is the same as reading 1601 exposures 001 601 1601 To go back to stand by status press key ENDOS 54 Rev 6 USER S MANUAL LLA Equipment use MEDICAL 7 5 2 Selection of multiplication factor for different types of film NO
10. exposure and positioning requested see Figure 12 Figure 13 Figure 14 Figure 15 b Put the film into the patient s mouth according to the chosen way bisecting or parallel For this purpose see paragraph 7 3 c Move the tubehead cone towards the patient and focus it exactly towards the tooth to X ray referring to the following Figures NOTE If you want to use the rectangular collimator 35x43 assemble it by clicking it on the end of the collimator cone position it as requested NOTE If you want to use the extended 30 cm cone snap it on the 20 cm cone WARNING Anatomical preset times are no more valid when 30cm cone is mounted Typically times necessary to obtain the same optical density must be multiplied by a factor 2 25 operating in manual exposure time selection Rev 6 45 ENDOS AC ACP CE USER S MANUAL Equipment use LOWER JAW MANDIBLE INCISIVI incisors incisives PREMOLARI premolars pr molaires Figure 12 CANINI canines canines MOLARI molars molaires ENDOS AC ACP CE 46 Rev 6 USER S MANUAL Equipment use MEDICAL UPPER JAW INCISIVI CANINI incisors canines incisives canines PREMOLARI MOLARI premolars molars pr molaires molaires Figure 13 Rev 6 47 ENDOS AC ACP CE lt USER S MANUAL Equip
11. fluids Too dark X rays Possible causes e Excessive exposure to X rays e Excessive development time e Developer temperature over the requested value e Wrong dilution of developing fluids Out of focus X rays impossibility to see details Possible causes e The patient moved e The tubehead moved X rays with fishbone marks Some intraoral films have a thin lead layer in the box with some fishbone marks engraved in the lower part These films can be exposed to radiation only on one side If the film is exposed to the wrong side the lead layer will absorb a large amount of radiation during exposure The result will be a lighter X ray and the film will show fishbone marks Rev 6 65 ENDOS AC ACP CE USER S MANUAL L GA Check and correction Partially exposed X rays Possible causes e X rays directed far from the medial section of the film e Low fluid level with subsequent partial development of the film e Two or more films one close to the other in the developer Darkened X rays Possible causes e The film has been in the warehouse for too long check expiry date e Accidental exposure of the film to X ray e Accidental exposure of the film to other sources of natural or artificial light Dark line on X rays This line appears when the film is excessively folded e X rays with marks of electrostatic electricity When the film is excessively compressed and the air is dry electrostatic electricity
12. hygiene and cleaning e Before cleaning the equipment disconnect it from the line using the cut out switch which must be provided when setting up This operation is necessary as some internal parts remain live even after it has been switched off from the on board switch e Be careful not to let water or other fluids enter the equipment in order not to cause a short circuit and corrosions e Never use solvents alcohol petrol Trichloroethylene corrosive or abrasive substances when cleaning External surfaces Use a soft cloth and for a stronger action a neutral soap to prevent damaging painted surfaces During cleaning operations prevent surplus detergent and or fluids entering the equipment or staying on painted surfaces Parts that come into contact with the patient s skin These parts should be disinfected at regular intervals with a 2 Glutaraldeide solution to guarantee hygiene Rev 6 7 ENDOS CE USER S MANUAL MEDICALI Description 4 DESCRIPTION 4 1 Identification labels ENDOS AC ACP CE 8 Rev 6 USER S MANUAL Description MEDICAL 1 ENDOS AC ACP label ENDOS xxx MEDICALI Line 230 V at 253 V 50 Hz Duty cycle 1 32 Max exposure time 3 2 Manufactured MMMMYYYY X RAY CONTROL Model 8361306X02 SIN XXXXYYYY CE us 2a 2b Tubehead label Tubehead label X ray tube type CET X ray tube type KAILONG TUBE HOUSING ASSEMBLY Model 846
13. of line voltage direct high voltage measurement can be made only by disassembling the tubehead This operation can be executed only in the factory The anodic current value is defined as the average value of stationary current which settles on load after pre switching time The anodic current value is measured using a digital voltmeter measuring the voltage drop at the ends of the resistance from 1 1 assembled on the tubehead To take this measurement remove the side plastic plug of the tube support connect the ground voltmeter terminal on the yellow green cable clamp screw and insert the positive terminal into the contact at the end of the grey cable The digital voltmeter must be selected on DC and the relation of transformation is given by 1 mA 1V Execute an exposure of at least 1 sec The exposure time value is the time during which the value of the anodic peak current exceeds 25 of the steady state value The time taken to reach this condition is called pre heating time The measurement must be taken at nominal line voltage measuring the anodic current wave form on the 1kQ resistance and using a memory oscilloscope Exposure time measurements using non invasive equipment can lead to systematic errors in exposure time measurements which cannot be quantified and which depend on the equipment used for measuring see paragraph 5 3 Rev 6 23 ENDOS AC ACP CE USER S MANUAL L LA MEDICAL Technical data
14. selection Rev 6 57 ENDOS CE USER S MANUAL L Messages on display 8 MESSAGES ON DISPLAY The ENDOS ACP or ENDOS AC timer display is also used to display messages identifying the equipment status These messages are connected to the conditions affecting X ray emission or error conditions that occurred during normal working 8 1 Functional messages The X ray cycle is not enabled or is stopped for the following reasons e Line voltage less than 12 1 of rated voltage Before making an exposure the device checks the line voltage If the voltage is less than 12 1 compared with the rated voltage the display shows the letters LLL together with the operativity green LED which will start flashing To reset this alert press any increase or decrease key ES lt 012220 ENDOS AC ACP CE 58 Rev 6 USER S MANUAL Messages on display MEDICAL e Line voltage more than 12 1 of rated voltage Before making an exposure the device checks the line voltage If the voltage is more than 12 1 compared with the rated voltage the display shows the letters HHH together with the operativity green LED which will start flashing To reset this alert press any key increase or decrease w A CS HHH a5 DB lees e Exposure time more than 4 seconds In the start cycle phase X ray button pressed the actual exposure time is calculated according to the variation of lin
15. timer is provided with Stand By function so if a key is not pressed for 5 minutes the timer goes into stand by low consumption shown on display by the presence of the decimal point on the right only Press any key to go back to the operative condition INCREASE KEY exposure time Ve DECREASE KEY exposure time 2 By pressing of these keys you select exposure time by turning the key onto one of the 33 available times Press the increase and decrease keys to modify the pre set time you can select quickly by keeping the key pressed in this way the variation happens quickly ENDOS AC ACP CE 38 Rev 6 USER S MANUAL General use instructions MEDICAL Equipment enabling key For additional safety ENDOS AC timer is provided with the Exposure enabling function X rays can be emitted only after pressing the key The equipment enabled signal is displayed the keyboard by switching on the corresponding green signal This enabling lasts for a pre set time variable during setup phase between 10 and 30 seconds default 15 seconds after which the function itself is disabled and no X rays are emitted if the exposure button is touched NOTE When the READY key is pressed not only will exposure be enabled but the equipment will also start displaying exposure time on the display calculated according to line voltage fluctuation compensation see paragraph 5 1 Rev 6 39 ENDOS
16. 1406502 TUBE HOUSING ASSEMBLY Model 8461406512 S N 31XXYYYY Manufactured MMMM YYYY SIN 31XXYYYY Manufactured MMMM YYYY ES Output max 70 kVp 8 mA 3 2 s 230V Output max 70 kVp 8 3 2 s 230 V X ray beam lt 6 cm at FFD 20 X ray beam lt 6 cm at FFD 20 m 0 8 IEC 336 Total filtration 22 mm m 0 8 IEC 336 Total filtration 22 mm Al Preheating time 100 ms Preheating time 100 ms X RAY TUBE OCX 70 G X RAY TUBE KL16 0 8 70G Manufacturer Bologna Italy Manufacturer KAILONG China Serial Number Serial Number 20090 Buccinasco 20090 Buccinasco MILANO ITALIA MILANO ITALIA 3 4 5 DP arm Extension arm Collimator 30 cm optional label label label BEAM LIMITING DEVICE Model 61614050 MEDICALI Model 8161200602 Model 8161200X02 Diameter lt 6 cm at FFD 30 om S N 40 S N 13XXYYYY S N 10XXYYYY Manufactured MMMM YYYY 20090 Buccinasco MILANO ITALIA Rev 6 9 ENDOS CE USER S MANUAL Description 4 2 1 Functions Models and Versions ENDOS intraoral radiographic equipment is composed of the following parts Extension arm and scissors arm It is composed of a double articulated joint arm enabling extension horizontally and vertically The tubehead is balanced in all positions NOTE The scissors arm is designed to work correctly at a max angle of 160 so its use requires a flare angle of less than 160 4 2
17. 2 Moreover a horizontal extension arm can be added available in various sizes to meet all requirements Tubehead The 70 kVp voltage the 8 mA current and the use of a tube with grid reduce exposure times and the quantities of X rays absorbed by the patient The radiogenic equipment is provided with a collimator with 20 cm focus skin distance and a 6 cm X ray emission diameter at the exit of the cone The tubehead is connected to the arm by a guide which allows 360 horizontal rotation and 290 vertical rotation Two alternate X ray tube can be used both have the same characteristics and provide the same performance The tubehead assembled with different X ray tubes are interchangeable solongas preheating time is set to the proper value indicated on the tubehead label ENDOS AC ACP CE 10 Rev 6 USER S MANUAL Description 4 2 3 Timer The name of ENDOS AC ACP depends on the type of timer in use ENDOS ACP ENDOS ACP is a digital timer with microprocessor where exposure times can be selected both manually and automatically With automatic selection there is a choice of 30 pre set times depending on the patient s size small medium or large and the type of tooth and acquisition mode film digital There are 33 fixed manual selection times that vary from a minimum of 0 02 seconds to a maximum of 3 20 seconds The main feature of this timer is that it has an automatic exposure time compensation for dri
18. 2 28 NOTE The technology employed in AC intraoral equipment where the line voltage is applied simultaneously to the high voltage transformer and to the filament of the Rx tube causes the two following deviations according to EN 60601 2 7 ed 1998 requirements a b The exposure time cannot be defined with an accuracy lower than the length of a 50Hz line period 20ms and than two 60Hz line periods 16 6ms In fact exposure time is defined as the interval between the instant when the anodic current exceeds 25 of the steady state value and the instant when it goes below this value It is evident that in the anodic current rise current see Figure paragraph 5 3 you have the uncertainty of 1 peak in determining the first peak which exceeds 25 of the steady state anodic current When running at 60Hz you must also consider that selectable times in the timer are not always multiples of the line period This introduces a further approximation that the timer executes automatically to carry the selected time to the nearest multiple of the line period EN 60601 2 7 ed 1998 regulation defines precisely that for each pair of exposure times in ENDOS AC ACP equipment is the only selectable parameter with a near relation but lower than 2 dose linearity is calculated by the formula Dose tl rl Dose 12 t2 lt 0 2 Dose tl tl Dose 12 t 2 4 Again due to the characteristic the anodic current rise curve in AC equipme
19. TE This parameter is displayed only for the ENDOS ACP version as the ENDOS AC version does not include the use of automatic selection This particular function enables the operator to vary the duration of exposure according to the film speed so affecting the quality of X ray image The film speed is reported on the film boxes The value shown on display is a X multiplication factor correcting exposure times in CONVENTIONAL RADIOLOGY non digital WITH AUTOMATIC ANATOMIC SELECTION The different available X multiplication factors are reported in the following table o For the appropriate multiplication factor please check documentation provided by the film manufacturer To show this parameter on display it is necessary to switch off the equipment switch it on again and when the wording relating to the software version i e 4 xx shows on the display press key 6 for a few seconds P13 will appear By pressing the increase or decrease key the value related to the set multiplication factor is displayed Rev 6 55 ENDOS CE USER S MANUAL Equipment use Use the decrease key if you want to decrease this time and the increase key if you want to increase it Press key confirm the selection and to access modification of the multiplication factor for Video X ray Digital see paragraph 7 5 3 NOTE If you do not want to modify the multiplication factor for Vid
20. X ray button cable will allow in the opposite direction to the X ray beam Press the X ray emission button and keep it pressed during exposure Exposure starts when the yellow light and an acoustic signal come on WARNING The X ray emission button is a dead man control so it must be held pressed during the whole exposure If the button is released before the exposure ends the emission is automatically stopped this situation is shown on the display by the flashing message E P and the luminous signals on the keyboard will be off This signal stays until one of the time increase keys is touched If there is an excessive variation in line voltage which would require an actual exposure time of 4 or more seconds the equipment will not execute the exposure In this case the display shows the correct exposure time according to the line fluctuation If the voltage is outside an acceptable range the display will show respectively LLL voltage too low and HHH voltage too high The touch of the X ray button with non enabled exposure will display the value of the actual exposure time of the latest exposure made or the time selected in the case of a first exposure When the exposure finishes the equipment starts the tubehead cooling cycle 32 times the exposure time this situation is shown by the flashing of the machine enabling light while the time that must elapse before the pause end is shown on the
21. al Service open within 50 msec by the safety timer BUZZER signal goes on Non closure of X ray control DISPLAY ANOMALY type X ray exposure Checks and operation signal to execute 2 2 X ray triac does not Exposure not Call Technical Service close within 50 msec started Non aperture of X ray triac DISPLAY ANOMALY type X ray exposure Checks and operations signal to execute X ray triac does not Exposure finished Call Technical Service open within 50 msec by the safety timer BUZZER signal goes on X ray relay closed at cycle enabling DISPLAY ANOMALY type X ray exposure Checks and operations signal to execute 2 4 X ray relay closed at Exposure not Call Technical Service X ray cycle enabling started Hardware timer intervention DISPLAY ANOMALY type X rays exposure Checks and operations signal to execute Hardware timer Exposure finished Switch equipment off and intervention by hardware timer start again if the trouble still exists call Technical Service ENDOS AC ACP CE 64 Rev 6 USER S MANUAL L LA Check and correction MEDICAL 9 CHECK AND CORRECTION OF POSSIBLE ERRORS IN DENTAL X RAYS 9 1 Typical faults in intraoral X rays Too pale X rays Possible causes e Inadequate exposure to X rays short time e Inadequate development time e Damaged developer e Developer temperature lower than the requested value e Wrong dilutions of developing
22. arm 4 2 2 TUDE Gad ie u ua e A 4 273 TAME EE 4 3 Configurations 4 3 1 Standard configuration 4 3 2 Remote timer configuration 4 3 3 Dental chair configuration 4 3 4 Ceiling configuration 4 3 5 Mobile stand configuration 4 3 6 Remote X ray button configuration 5 TECHNICAL DATA 5 1 Method for correcting exposure times 5 2 Method for measuring technical factors 5 3 Correct use of dosimeters to measure exposure times 5 4 Curves tube features 5 5 Reference 5 6 Overall dimensions 6 GENERAL USE INSTRUCTIONS 6 1 ENDOS ACP timer 6 2 ENDOS AC timer Visual signals una a Rev 6 ENDOS AC ACP CE USER S MANUAL A Contents 7 EQUIPMENT USE 41 7 1 Equipment preparation issus 42 7 1 1 Preparation of the timer for X ray use with automatic selection of exposure times only for ENDOS ACP version 42 7 1 2 Preparation of the timer for radiographic use with manual selection Of exposure TIMES shi ise ta ceti exem e iode b era ed b Qd ins 43 7 1 3 Preparation of the timer for Digital Radiography Videoradiograph
23. cale bottom Manually selectable times are 33 and go from 0 02 minimum to 3 20 seconds maximum see Table 2 0 02 0 04 0 06 0 08 0 10 0 12 0 14 0 16 0 18 0 20 0 23 0 25 0 30 0 32 0 36 0 40 0 45 0 50 0 54 0 60 0 63 0 70 0 80 0 90 1 00 1 25 1 30 1 40 1 60 2 00 2 50 3 00 3 20 Table 2 NOTE See paragraphs 5 1 5 2 5 8 Rev 6 43 ENDOS CE USER S MANUAL L MEDICAL Equipment use 7 1 3 Preparation of the timer for Digital Radiography Videoradiography use with automatic selection of exposure times only ENDOS ACP version NOTE This automatic program is used only if you have intraoral Video Digital Radiography equipment Press key 14 the related signal switches and times displayed on the display will be reduced in comparison with the use of the equipment with films and anyway they will reflect the selection made Size Tooth a Digital X ray exposure is selected automatically by selecting one of the available times b To return to radiographic automatic selection press key again NOTE The digital exposure time reduction factor can be modified by the Service Technician during setting up or directly by the user see paragraph 7 5 3 ENDOS AC ACP CE 44 Rev 6 USER S MANUAL lt Equipment use MED 7 2 Preparation of the tubehead a Set the tubehead with an angle suitable for the
24. can be released so it can run down to compression points where black marks form e X rays with chemical spots The scattering of developing or fixing fluid on the film before development and fixing procedures causes spots on the X rays these spots are e Dark if caused by the developing fluid e Light if caused by the fixing bath e X rays with emulsion loss If the film is kept in a warm water bath too long for instance all night the emulsion can soften and partially come off the base of the film After development the film will be scratched ENDOS AC ACP CE 66 Rev 6 USER S MANUAL L LA Check and correction MEDICAL 9 2 Typical faults caused by wrong positioning X rays with extended or shortened images The X ray beam is not perpendicular to the bisecting line of the angle formed by the longitudinal axis of the tooth and by the film e X rays with extended apex of the tooth Probably caused by excessive folding of the film in the patient s mouth Rev 6 67 ENDOS USER S MANUAL Maintenance 10 MAINTENANCE Like all electrical equipment this unit requires not only correct use but also maintenance and checks at regular intervals This precaution will guarantee that the equipment works safely and efficiently Periodic maintenance consists in checks carried out directly by the operator and or by the Technical Service The operator can carry out the following checks hi
25. d at Absent Contact Technical Service start up E0 2 Tubehead supply active at ACTIVE Switch off system start up Contact Technical Service E03 X ray exposure enabling Absent Check if the primary external button X ray button is pressed Primary pressed at start up or in short circuit in this case call Technical Service E0 4 X ray exposure enabling Absent Check if the remote X ray external button button is pressed or in Remote pressed at start up short circuit Se this call Technical Service EO Both X ray exposure Absent Check if both X ray 5 enabling external buttons buttons are pressed or in pressed at start up short circuit in this case call Technical Service E06 Equipment enabling key Absent Check the control pressed at start up keyboard and if necessary call Technical Service E07 Digital selection key pressed Absent Check the control at start up 3 keyboard and if necessary call Technical Service E08 Increase key pressed at Absent Check the control start up keyboard and if necessary call Technical Service 09 Decrease key pressed at Absent Check the control start up keyboard and if necessary call Technical Service WARNING EO 2 In the event of an error signal switch the equipment off immediately because there is undesirable exposure ENDOS AC ACP CE 62 Rev 6 USER S MANUAL LLA Messages on displau SISTEMI 8 2 2 Non fatal errors in start up phase If during the
26. display in the middle top part of the keyboard has a multiple function 1 2 During the exposure preparation phase it displays the automatically or manually selected exposure time Soon after enabling the equipment by pressing the Ready key and during the exposure phase it displays exposure time corrected by the equipment to compensate line voltage fluctuations while at the end of the exposure it displays the time that must elapse before the end of the tubehead cooling pause At the end if you press the X ray button with exposure not enabled the display shows the latest actual exposure time ENDOS AC ACP CE 40 Rev 6 USER S MANUAL Equipment use MEDICAL 7 EQUIPMENT USE a Press the switch on button located at the bottom of the timer This operation will start the equipment s automatic control function b After completing the control function possible anomalies pointed out are signalled by error messages described in chapter 8 the equipment displays the standard anatomic selection or the selection pre set before switching off according to the mode chosen during setting up NOW THE EQUIPMENT IS READY FOR USE Rev 6 41 ENDOS AC ACP CE USER S MANUAL Equipment use 7 1 1 Equipment preparation Preparation of the timer for X ray use with automatic selection of exposure times only for ENDOS ACP version If you want to enable the automatic selection you must choose e e e the
27. e line frequency so the calculated time is always rounded off to the multiple of the line frequency itself The correct exposure time shown once the timer has been enabled by the Ready key and during the execution of the X ray is the time actually used by the equipment it is calculated applying a correction factor to the time selected by the user based on the empirical law relating to the optical density of the film with the high voltage peak value and consequently with the line voltage NOTE If the Ready key has been disabled in system configuration the display will show the corrected exposure time only during exposure or holding the X ray button pressed at the end of it Rev 6 21 ENDOS AC ACP CE USER S MANUAL Technical data The qualitative relation between the multiplication factor and the line voltage is shown in the following picture for equipment configured to work at 230V Multiplication factor of exposure time to 1 75 the variation of line voltage 1 5 1 25 1 0 75 0 5 206 218 230 242 254 Line voltage ENDOS AC ACP CE 22 Rev 6 USER S MANUAL lt LLA Technical data MEDICAL 5 2 mA Method for measuring technical factors value is defined as the stationary value of high voltage applied to the tube which settles on load after preheating time KV value is measured by a non invasive instrument with accuracy of over 2 to the nominal value
28. e voltage When the time on the display is more than 4 seconds the time value will be calculated ES 4 20 seconds and simultaneously the green LED of operational will flash To reset this alert press any increase or decrease key Dole eG NOTE EE the equipment suffers a Software crash there is a safety timer in the hardware that will cut off exposure after a maximum of 5 5 seconds Rev 6 59 ENDOS AC ACP CE USER S MANUAL LLA MEDICAL Messages on display X ray button released before exposure end The X ray emission button is a dead man control so it must be held pressed during the whole exposure If the button is released before the exposure ends the emission is automatically stopped this situation is shown on the display by the flashing message E P and the luminous signals on the keyboard will be off To reset this condition press increase or decrease the green LED will start blinking without exposure and the tube cooling time countdown will be shown When the cool down is over the device goes back to the IDLE state P wg L ieee Before starting a new exposure replace the film to avoid double exposure with meaningless diagnostic results ENDOS AC ACP CE 60 Rev 6 USER S MANUAL L Messages on display MEDICAL 8 2 Error signalling The ENDOS ACP and ENDOS AC timers are equipped with sophisticated diag
29. edures in this manual and never for different purposes from the ones for which it has been designed Before carrying out any maintenance disconnect the equipment from the power line using the circuit breaker provided ENDOS is an electro medical device and for this reason can be used only under the supervision of highly qualified medical staff in possession of all the necessary knowledge about X ray protection The user is responsible for fulfilling all the legal requirements connected with the possession installation and use of the equipment itself ENDOS AC ACP is built for continuous running with intermittent load for this reason the planned duty cycle must be observed Appropriate accessories such as lead aprons must be used to protect the patient from radiation Although the equipment is designed to provide a reasonable degree of protection from electromagnetic interference according to IEC International regulations it must be installed at an adequate distance from electricity transformer rooms static continuity units from two way amateur radios and cellular phones The latter can be used only at a minimum distance of 1 5m from any part of the equipment Any instrumentation or equipment for professional use located near ENDOS AC ACP must conform to Electromagnetic Compatibility regulations Non conforming equipment with known poor immunity to electromagnetic fields must be installed at a distance of at least 3m f
30. eo X Ray Digital press key again ENDOS AC ACP CE 56 Rev 6 USER S MANUAL LLA Equipment use MEDICAL 7 5 3 Selection of multiplication factor for Video X Ray Digital NOTE This parameter is displayed only for ENDOS ACP version as the ENDOS AC version does not include the digital function selection use This particular function enables the operator to vary the length of X ray emission according to the sensitivity of the digital acquisition system in use The value shown on display is a X multiplication factor correcting exposure times in DIGITAL X RAY WITH AUTOMATIC ANATOMIC SELECTION The different available X multiplication factors are reported in the following table X multiplication factor Default value 0 20 You must switch the equipment off to show this parameter on display switch it on again and when the words referring to the software version appear on display press key for a few seconds At first the words P13 referring to the multiplication Factor for the type of set film appear its modification is described in paragraph 7 5 2 Press key to confirm the selection and display the words P14 by pressing the increase or decrease key you display the value referring to the set multiplication Factor for Video X ray Digital Use the decrease key if you want to decrease this time and the increase key if you want to increase it Press key 9 to confirm the
31. ft of nominal voltage within t 10 ENDOS AC ENDOS AC has the same features as the ENDOS ACP timer excluding automatic and digital anatomic selection It has manual exposure time selection only NOTE A remote X ray button configuration can be made outside the exam room This can be a pure doorbell X ray button or a device which also show status of the unit READY and EXPOSURE IN PROGRESS NOTE The equipment supplies two separate contacts for connection with external signalling devices One contact shows the status of functioning equipment ready for use and the second one the X ray emission Connection procedures and the necessary requisites for signalling devices are given in the Service Manual Rev 6 11 ENDOS AC ACP CE USER S MANUAL MEDICALI Description 4 3 Configurations 4 3 1 Standard configuration C3 Figure 1 1 Tubehead 2 Scissors arm 3 Extension arm 4 Timer X ray button ENDOS AC ACP CE 12 Rev 6 USER S MANUAL Description 4 3 2 Remote timer configuration oO Qi Q ND mH Figure 2 Tubehead Scissors arm Extension arm Wall support kit code 8161301002 Remote timer X ray button Rev 6 13 ENDOS AC ACP CE USER S MANUAL Description 4 3 3 Dental chair configuration aoa WN
32. ish translation of the Italian original version ENDOS AC ACP CE ii Rev 6 USER S MANUAL LLA Introduction SISTEM 1 INTRODUCTION NOTE This manual is updated to the product status it is sold with to guarantee the user an adequate reference for equipment use and any aspect connected with use safety The manual may not reflect any product variation without impact on operating procedures and use safety The intraoral radiographic ENDOS AC ACP produces high quality intraoral X rays thanks to reduced exposure times and the small dimensions of the focal spot ENDOS AC ACP is exclusively intended for the execution of intraoral X rays The equipment has the following features e Very good quality X rays pictures e user friendly e ergonomic design The equipment is controlled by a microprocessor that makes it possible to reproduce exposure times and is composed of the following parts e Timer ENDOS AC or ENDOS ACP equipped with wall plate e Extension arm 30 cm 60 cm or 80 cm for wall version e Scissors arm DP Tubehead 70 kV 8 mA X ray tube with grid The purpose of this manual is to provide the user with instructions that will allow him to run the equipment safely and efficiently The equipment must be used according to the procedures in the manual and never for different purposes from the ones for which it has been designed 1 1 Icons in the manual Indicates a NOTE we recomme
33. ity which makes it possible to correct exposure time automatically when line voltage is different from its nominal voltage change in the line voltage affects the peak voltage applied to the RX tube and the high voltage value affects the Rx spectrum very significantly This in turn affects the optical density of the image on the film The task of the correction is to achieve the same optical image density irrespective of the variations in line voltage within its permitted variation range of 10 In short this feature makes it possible to obtain the same quality of image without having to be concerned about possible line variations which occur frequently in many areas and which are almost impossible to prevent without resorting to costly equipment Automatic exposure time correction works with the following sequence inside the timer there is a voltmeter which takes a constant reading of the line voltage while the user selects the desired exposure time After the user has chosen the exposure time he knows from experience to be the best for the type of X ray he is going to take the user himself presses the key enabling exposure and the timer shows on the screen the correct time that will be used for the exposure in progress time that the timer itself has calculated according to the value of the line voltage measured an instant before pressing the key of the exposure permission NOTE ENDOS AC and ENDOS timers work in step with th
34. lf rectifying with grid control ENDOS AC ACP CE 18 Rev 6 USER S MANUAL L LA Technical data MEDICAL Tubehead features Manufacturer VILLA SISTEMI MEDICALI Buccinasco MI Rated voltage 70 Tubehead power 430 W Total filtration gt 2 mm Al eq 70 KV Transformer insulation Oil bath duty cycle 1 32 Focal spot 0 8 IEC 336 Minimum focus to skin distance X ray beam diameter 20cm focus Radiation leakage at 1 m Technical factors for radiation leakage 70 KV 8 mA 1 s duty cycle 1 exposure each 32 seconds X ray tube features Manufacturer CEI Bologna KAILONG Electronic Italy China Type OCX 70 G KL16 0 8 70G with grid Inherent filtration 0 5 mm AI 0 4 mm Al equivalent to 70 equivalent to 70 KV Anode thermal capacity 6kJ 7 kJ Rev 6 19 ENDOS AC ACP CE lt USER S MANUAL L MEDICAL Technical data 10 C 40 C Operating relative humidity range 30 75 Temperature range for transport and 20 C 70 C storage Max relative humidity for transport and 95 non condensing storage Min atmospheric pressure for storage 630hPa and transport Apparatus and detachable parts weight 30 4 kg 25 4 kg 2 9 kg ENDOS AC ACP CE 20 Rev 6 USER S MANUAL Technical data MEDICAL 5 1 Method for correcting exposure times This RX intraoral equipment features a special function called Computer Controlled Dens
35. ment use OCCLUSAL 65 0 JO MASCELLA MANDIBOLA upper jaw lower jaw m choire mandibule Figure 14 BITE WING RAGGIO CENTRALE main beam rayon central Li Figure 15 ENDOS AC ACP CE 48 Rev 6 USER S MANUAL Equipment use MEDICAL 7 3 Exposure techniques This paragraph describes the different techniques generally used for intraoral exposure 7 3 1 Bisecting technique Incidence X ray beam Vertical angle To get a real image of the tooth the X ray must be perpendicular to the bisecting line of the angle formed by the longitudinal axis of the tooth and by the film After positioning the X ray beam and the patient s head according to these criteria it is possible to apply an average vertical incidence for each area The incidence angle of the X ray beam can be correctly measured by the graded scale applied to the tubehead Figure 16 Legend Figure 16 A Tooth longitudinal axis B Bisecting line C Film level D Occlusal level RC X ray beam Rev 6 49 ENDOS AC ACP CE USER S MANUAL LLA PS TEMI Equipment use X ray beam incidence Horizontal direction The X ray beam must be set horizontally in particular in the ortho radial direction regarding inter proximal spaces see Figure 17 in order to avoid a superimposition of the structures see Figure 18 RC P OX 00626963 Figure 17 Fig
36. mself check the labels are intact and well attached check there are no oil marks on the tubehead check the remote control cable is not broken or scratched check there are no external damages to the equipment which could make it unsafe in terms of protection from radiation check the scissors arm balance WARNING If you find irregularities or damages the operator must inform the Technical Service immediately ENDOS AC ACP CE 68 Rev 6 USER S MANUAL Maintenance Installation Maintenance Maintenance Maintenance Maintenance Maintenance Maintenance Maintenance MAINTENANCE OPERATIONS RECORD Rev 6 69 ENDOS CE USER S MANUAL THIS PAGE IS INTENTIONALLY LEFT BLANK ENDOS AC ACP CE 70 Rev 6 Cod 6961901103 Rev 6 0051 VILLA SISTEMI MEDICALI S p A Via Delle Azalee 3 20090 Buccinasco MI ITALY Tel 39 02 48859 1 Fax 39 02 4881844 e DEL MEDICAL SYSTEMS GROUP
37. nal is displayed on the keyboard by switching on the corresponding green signal This enabled signal stays for a set time variable during setup between 10 and 30 seconds default 15 seconds after which the function itself is disabled and X rays are not emitted if the exposure button is touched NOTE When the READY key is pressed not only will exposure be enabled but the equipment will also start displaying exposure time on the display calculated according to line voltage fluctuation compensation see paragraph 5 1 ENDOS AC ACP CE 36 Rev 6 USER S MANUAL General use instructions MED Digital selection key Key 14 enables automatic exposure for Digital X rays reducing exposure times to values suitable to digital sensors NOTE Value setting and the setting of the exposure time reduction factor in digital selection by the operator are described in paragraph 7 5 3 NOTE This key and the connected functions can be disabled by the Technical Service in the set up phase Rev 6 37 ENDOS USER S MANUAL A d General use instructions 6 2 ENDOS AC timer l X ray emission yellow LED 2 Ready for X rays ERDOS lt green LED _ 93 Exposure permission ZS READY 4 Increase key 3 j Decrease key N 6 Three figure display Figure 11 Control keyboard ENDOS AC NOTE ENDOS AC
38. nd particular attention in reading the d subjects identified with this icon Indicates a WARNING subjects identified with this icon concern safety aspects regarding the patient and or the operator Rev 6 1 ENDOS CE USER S MANUAL Safety aspects SAFETY ASPECTS WARNING Read this chapter very carefully Villa Sistemi Medicali designs and makes their equipment according to safety requirements moreover they supply all necessary information for appropriate use and warnings relating to dangers connected with X ray generators The manufacturer does not accept any responsibility for e Use of ENDOS AC ACP equipment for purposes other than those for which it has been designed e damages to the equipment the operator the patient caused both by wrong installations and maintenance that do not follow the procedures contained in the user manuals and the installation provided with the equipment and by wrong operating techniques e mechanical and or electrical changes made during and after installation that differ from the ones in the Service Manual Only personnel authorised by the Manufacturer may carry out technical work on the equipment Only authorised personnel can remove the tubehead from its support and or gain access to live parts ENDOS AC ACP CE 2 Rev 6 USER S MANUAL LLA Safetu aspects MEDICAL 2 1 Warnings The equipment must be used according to the proc
39. ndition press any key INCREASE KEY exposure time Ve DECREASE KEY exposure time 2 pressing any of these keys you go from automatic selection to manual selection In this way all signals related to automatic selection Patient s size Tooth Selection Digital Sensor are switched off So time selection will work in a manual way You can select quickly by keeping the key pressed in this way the variation works quickly To go back to the automatic time selection press one of the Selection keys Patient s Size Tooth Digital Sensor SIZE selection key Press key 4 to select from different patient sizes small e medium m and large m Even in this case exposure times vary An acoustic signal about second is linked to each touch of the key linked to switching on the selected function from the LED Rev 6 35 ENDOS AC ACP CE USER S MANUAL General use instructions TOOTH ANATOMIC selection key Press key 8 to select from the exposure times provided for the different teeth The meaning of symbols is explained as follows 5 B A U U Incisors Premolars Canines Bite wing Upper molar Lower molar superior or superior or inferior inferior Exposure enable key Ready For additional safety ENDOS timer is provided with Enabling of exposure function X rays can be emitted only after pressing the key The equipment enabled sig
40. nostics that allow you to monitor all operating phases and related safety devices Error messages which can be displayed are divided into three types e errors in the start up phase which require intervention on the part of the Service Engineer re settable errors in the start up phase e errors found during the exposure phase The first type of error is found during the equipment start up phase if there is a non re settable condition alert the equipment stops and does not allow any operation The condition is deleted just by switching the equipment off and starting it again or proceeding as described in the table in the following page These anomalies have an error code of from E01 to E09 Re settable alert conditions stop some of the equipment s functions but they allow some operations These anomalies have an error code of E11 or E12 Errors found in the exposure phase can also cause the timer to stop the following exposures These anomalies have an error code of from E20 to E25 Refer to the following descriptions for each error type Rev 6 61 ENDOS AC ACP CE USER S MANUAL LLA MEDICAL Messages on display 8 2 1 Non re settable errors DISPLAY ANOMALY type ACOUSTIC Checks and operations signal signal to execute C H S Checksum error of memories Absent Contact Technical Service EEPROM EPROM and RAM test 1 E01 X ray relay close
41. nt the linearity limit is not respected for very short exposure times In fact it is evident that for any exposure time a basal dose is emitted produced in the period between the application of voltage to the tubehead and the time when anodic current exceeds 25 of steady state assumed as the exposure time start ENDOS AC ACP CE 30 Rev 6 USER S MANUAL Technical data MED Moreover the interval between exceeding 25 of the steady state anodic current and reaching running point the anodic current grows and with it the dose rate making the emitted dose non proportional to the exposure time The use of a tube with grid substantially limits the basal dose and also the dose emitted at the start of the exposure time before the anodic current reaches the stationary status In ENDOS AC ACP equipment typically the basal dose and the dose emitted in the interval when the anodic current varies between 25 of the running value and stationery point is very low thanks to the tube with grid and this makes it possible to guarantee that the linearity requirements contained in EN 60601 2 7 ed 1998 are respected for exposure times starting from 60ms Rev 6 31 ENDOS AC ACP CE USER S MANUAL SL mi Technical data 5 6 Overall dimensions 5 4 3 4 E FRONT VIEW a X D hd LN UN Figure 7 Overall dimensions wall version
42. patient s size using keys m You will then set the type of tooth to be examined choosing from the projections ERUSG By pressing the keys on the control panel the selection made is highlighted by an acoustic signal and the LED relating to the pressed key turns on The selected size tooth combination will produce the basic exposure time on the display see Table 1 Exposure times shown are those suggested for Ultra Speed Kodak films Type D Table 1 ENDOS AC ACP CE 42 Rev 6 USER S MANUAL LLA Equipment use MEDICAL NOTE When using different types of film example type E the multiplication factor must be modified for automatic selection This modification can be made by the Service Technician during setting up or made directly by the user see paragraph 7 5 2 It is necessary to set the multiplication factor shown on the documentation provided by the film producer 7 1 2 Preparation of the timer for radiographic use with manual selection of exposure times Enable manual selection working on keys A and 2 enabling manual selection the automatically pre set time will increase by pressing key Ve and decrease by pressing key 4 To increase or decrease times click by click press one of the keys several times you will hear an acoustic signal as the times vary Holding one of the keys pressed times increase or decrease quickly according to the respective s
43. rom ENDOS and supplied by a dedicated electric line ENDOS AC ACP must be turned off when using electro cautery or similar equipment in the vicinity of the equipment itself The equipment is not designed to be used in the presence of anaesthetic mixtures inflammable with air oxygen or nitrous oxide Equipment parts which may come into contact with the patient must be cleaned regularly according to the instructions given later in this document WARNING For safety reasons it is forbidden to overload the extension arm or the scissors arm in an anomalous way for instance by leaning on it Rev 6 3 ENDOS USER S MANUAL Safety aspects 2 2 Protection from X rays Although dosage given by modern X ray equipment is low on average during the execution of the exposure the operator must take all precautions to protect the patient and himself in compliance with the regulations in force WARNING Protection from X ray radiation is regulated by law The equipment must be used by specialised personnel only a b d The film or the digital sensor must be put into the patient s mouth manually or using the appropriate supports If possible it must be held by the patient himself During X ray exposure the operator must not come into contact with the tubehead or the collimator cone During exposure the operator must be at a certain distance from the X ra
44. ure 18 Correct position Wrong position Legend Figure 17 and Figure 18 RC X ray beam ENDOS AC ACP CE 50 Rev 6 USER S MANUAL Equipment use MED 7 3 2 Parallel technique Using this technique the film level is placed parallel to the tooth axis Owing to anatomic factors the film is generally kept away from the lingual surface of the tooth except for molars When it is introduced into the patient s oral cavity the film is fixed on a support to prevent distortion The patient holds the support itself near the teeth Various types of supports are available on the market to match the different types of teeth This technique enables you to get more accurate and more easily repeatable X rays compared with the bisecting technique see Figure 19 and Figure 20 HORIZONTAL SECTION lt lt i Figure 19 VERTICAL SECTION Figure 20 Rev 6 51 ENDOS USER S MANUAL Equipment use 7 4 Exposure a b Operating on the main keyboard select exposure time as described in paragraph 7 2 according to the selected way Enable exposure by pressing key 3 Ready NOTE When the READY key is touched the equipment will not only enable exposure but it will also start showing the exposure time on the display calculated according to line voltage fluctuation compensation see paragraph 5 1 d Walk away as far as the
45. y use with automatic selection of exposure times only ENDOS ACP MOL E 44 7 2 Preparation of the tubehead e e ER ev Ce 45 1192 Expos re DeC EHGUBS oos ee Gui EEN 49 75 251 Bisecting technique ci eere Ce ete Ct da a e etel def br e 49 753 2 Parallel technique eee Re e e ea eck ea eius 51 qud orgy he ede PA CINA GIA u RUM REINO SOS NADA 52 149 Spectral TUOCUOfBS Scala eve it Ces exili et 54 7 5 1 Counting the number of exposures made 54 7 5 2 Selection of multiplication factor for different types of film 55 7 5 3 Selection of multiplication factor for Video X Ray Digital 57 8 MESSAGES DISPLAY 58 F tictional E 58 2 Error signalling tnt dde didit eed 61 8 2 1 Non re settable errors oci eet tei er ete exter eto Go bebo d P eet 62 8 2 2 fatal errors in start up Phase 63 8 2 3 Errors in exposure phase 64 9 CHECK AND CORRECTION OF POSSIBLE ERRORS IN DENTAL X RAYS 65 9 1 Typical faults in intraoral ad e b eed i eb uy d ge d 65 9 2 Typical faults caused by wrong positioning 67 10 MAINTENANCE 68 This publication can only be reproduced transmitted transcribed or translated into any human or computer language with the written consent of the Manufacturer This Manual is the Engl
46. y source at least 2 metres in the opposite direction to X ray beam During exposure the operator and the patient are the only people allowed in the room The lead aprons should be used to reduce the undesirable effect of secondary radiation on the patient ENDOS AC ACP CE 4 Rev 6 USER S MANUAL LLA Safetu aspects SISTEMI 2 3 Environmental risks and disposal Some parts of the equipment contain material and fluids which must be disposed of in special areas designated by the local health authorities at the end of the equipment s life cycle In particular the equipment contains the following materials and or components e Tubehead hard plastic materials metal materials glass dielectric oil lead tungsten e Other parts of the equipment hard plastic materials metal materials printed circuits iron plastic materials NOTICE FOR THE USERS IN THE E C According to the Directive 2002 96 EC on Waste from Electrical and Electronic Equipment The crossed out wheeled bin symbol placed on the equipment or its package means that the equipment must be collected separately from the other waste The separate collection of this equipment at the end of its life cycle is managed by the manufacturer distributor The user that want to discard this equipment should contact the local distributor and follow the system he adopted for the separate collection The correct separate collection for the subsequent rec
47. ycling treatment and environmentally compatible disposal contributes to avoid negative effects on the environment and on the health and promotes the reuse and or recycling of the materials that the equipment is made of The illegal disposal of the equipment made by the user will cause the application of sanctions according to the local regulations Rev 6 5 ENDOS CE USER S MANUAL Safety aspects 2 4 Symbols in use The following symbols are used in this manual and in ENDOS AC ACP besides the symbols on the keyboard see chapter 6 Equipment with applied parts Type B number of machine parts contain materials and liquids that upon completion of the machine s life cycle must be disposed of at recovery centers established by the local health units Lx Alternate current Connecting point to neutral conductor Connecting point to live conductor Protection ground Functional ground ON equipment connected to electricity line Permission key to exposure the permitted exposure C status is displayed by switching on the corresponding green symbol Focal spot according to 336 5 X ray emission OFF equipment not connected to electricity line ENDOS AC ACP CE 6 Rev 6 USER S MANUAL L LA Cleaning and disinfection SISTEMI 3 CLEANING AND DISINFECTION The following procedures should be observed carefully in order to guarantee accurate
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