manualshive.com logo in svg

Environnement AF22e, Техническое руководство, Страница: 106 / 118

Поделиться
Скачать
Environnement AF22e Скачать руководство пользователя страница 106

Environnement 

S.A

 

AF22e

 

Duplication prohibited

 

 

 

 

                                  APRIL 2016

5–8

 

Alarm message 

(Min./Max. values) 

 

Possible cause(s) 

Possible corrective action(s) 

Supply fault 

Min. value: N.A.  

Max. value: N.A. 

–

  Supply board is faulty. 

 

–

  Measurement board microcontroller 

is faulty. 
 

–

  Abnormal power consumption is 

detected. 
 
 
 
 

–

  24 V power supply is not stable. 

 

–

  Replace supply board. 

 

–

  Replace measurement board. 

 
 

–

  Check that all devices as solenoid 

valves, laminar heating, shutter, or 
other external devices are connected 
to 24 V external relay output. 
 
 

–

  Replace power supply. 

5 V sensor  fault 

Min. value: 4.75 V  

Max. value: 5.25 V  

–

  Power supply board is faulty. 

 

–

  5 V sensors are faulty. 

–

  Replace power supply board. 

 

–

  Check all pressure and temperature 

sensors. 

 

 

 

 
 

 

Содержание AF22e

Страница 1: ...NALYZER AF22e MARCH 2017 111 bd Robespierre 78300 POISSY TEL 33 0 1 39 22 38 00 FAX 33 0 1 39 65 38 08 http www environnement sa com GENERAL CHARACTERISTICS PRINCIPLE OF OPERATION OPERATING INSTRUCTIO...

Страница 2: ...ation prohibited APRIL 2016 0 2 WARNING The information in this documentation is subject to change without notice Environnement S A all rights reserved This document does not represent a commitment un...

Страница 3: ...rs made by a third party without the written agreement of the seller The buyer is required to check the equipment as soon as possible upon receipt and acceptance and no later than eight days following...

Страница 4: ...REMENT PRINCIPLE 2 6 2 3 GENERAL PRINCIPLE DIAGRAMS 2 7 2 4 SAMPLING AND ANALYSIS 2 9 2 5 SIMPLIFIED CALCULATION DESCRIPTION 2 11 2 6 PROGRAMMING THE RESPONSE TIME 2 12 2 7 ELECTRONIC ARCHITECTURE 2 1...

Страница 5: ...mentS A APRIL 2016 0 5 CHAPTER 4 PREVENTIVE MAINTENANCE 4 1 SAFETY INSTRUCTIONS 4 3 4 2 MAINTENANCE CALENDAR 4 4 4 3 MAINTENANCE OPERATION SHEETS 4 4 4 4 KITS AND SPARE PARTS SET FOR AF22e MAINTENANCE...

Страница 6: ...s 3 3 Figure 3 2 Installation of the sample gas inlet 3 4 Figure 3 3 Example of a pressurized gas connection 3 39 Figure 3 4 Typical calibration device diagram 3 44 Figure 4 1 Sample inlet dust filter...

Страница 7: ...3 Controller board configuration 5 12 Table 5 4 Power supply board 5 13 Table 5 5 Measurement board test points LEDs description and connections 5 14 Table 5 6 Photodiode board configuration 5 16 Tabl...

Страница 8: ...2016 3 16 06 2016 3 17 06 2016 3 18 06 2016 3 19 04 2016 3 20 04 2016 3 21 04 2016 3 22 04 2016 3 23 04 2016 3 24 04 2016 3 25 04 2016 3 26 04 2016 3 27 04 2016 3 28 04 2016 3 29 04 2016 3 30 04 2016...

Страница 9: ...CHARACTERISTICS 1 9 1 2 1 TECHNICAL CHARACTERISTICS 1 9 1 2 2 STORAGE CHARACTERISTICS 1 10 1 2 3 INSTALLATION CHARACTERISTICS 1 10 1 2 3 1 Links between units 1 10 1 2 3 2 Dimensions and weight 1 10...

Страница 10: ...EnvironnementS A AF22e Duplication prohibited APRIL 2016 1 2 1 GENERAL CHARACTERISTICS Figure 1 1 Environnement S A AF22e with screen Figure 1 2 Environnement S A AF22e without screen...

Страница 11: ...al diameter connected to the analyzer rear panel The sample is aspirated by an internal pump The measurement is displayed on a color display equipped with a touch screen located on the front panel Thi...

Страница 12: ...ssure Gas inlets outlets for analyzers with permeation bench option right hand side The inlet for the sample to be analyzed 1 is composed of 4 mm I D and 6 mm O D Teflon tube fittings attached to the...

Страница 13: ...o air generator 5 three contact socket for main power supply 6 general fuse 7 Ethernet output 8 two USB ports 9 fan 10 duplicate the zero and span solenoid valves for optional solenoid valve of extern...

Страница 14: ...assing through the dust filter 1 the sample to be analyzed passes through an hydrocarbon removing permeation tube called the carbon kicker The external carbon kicker tube is ventilated with under vacu...

Страница 15: ...e inlet dust filter 2 measurement module 3 pump 4 ARM20 board 5 Interconnection board 6 24 VDC power supply unit 7 measurement board 8 pressure sensor boards 9 UV lamp supply board 11 UV lamp 12 shutt...

Страница 16: ...ssure and correct operation tests Measurement values in ppb or g m3 integrated conversion coefficient Memory storage of average measurements in programmable periods 1 1 3 2 Option The following analyz...

Страница 17: ...gnals option 4 analog outputs 0 1 V 0 10 V 0 20 mA 4 20 mA Power supply 100 250Vac 50 60Hz ground Consumption 280 VA when starting up the unit 110 VA in normal operation Working temperature 10 C to 35...

Страница 18: ...nalyzer comes in a standard 19 inch three unit high rack Length 606 mm Width 483 mm Height 133 mm Weight 9 kg 1 3 4 3 Handling and storage The AF22e analyzer must be handled with care to avoid damage...

Страница 19: ...Duplication prohibited AF22e EnvironnementS A APRIL 2016 1 11 483 14 38 36 545 50 57 133 125 430 7 Figure 1 7 AF22e dimensions in mm...

Страница 20: ...EnvironnementS A AF22e Duplication prohibited APRIL 2016 1 12 Page intentionally left blank...

Страница 21: ...LIFIED CALCULATION DESCRIPTION 2 11 2 6 PROGRAMMING THE RESPONSE TIME 2 12 2 7 ELECTRONIC ARCHITECTURE 2 13 2 8 NETWORK LINK AND USB PORTS 2 14 Figure 2 1 Diagram showing molecule energy levels 2 5 Fi...

Страница 22: ...EnvironnementS A AF22e Duplication prohibited APRIL 2016 2 2 Page intentionally left blank...

Страница 23: ...valence electrons Likewise transition from an electronical level to another by one photon absorption always involves vibrational and rotational transitions of lower energy levels The mathematical for...

Страница 24: ...d through a filter centered on 350 nm by extinction where M represents another gaseous molecule Then the molecule scatters its energy mechanically and does not fluoresce This phenomenon is known as qu...

Страница 25: ...Duplication prohibited AF22e EnvironnementS A APRIL 2016 2 5 Figure 2 1 Diagram showing molecule energy levels...

Страница 26: ...be analyzed Likewise the probability for an excited molecule to fluoresce is given by Kf Kf Kq Kd The fluorescence intensity if received by the PM is then expressed in the following form f a Kf i Gi K...

Страница 27: ...re 2 2 and Figure 2 3 Sample inlet Solenoid valve block Zero air filter Pump Restrictor Restrictor Zero air filter Photodiode Gas pressure Down stream pressure Hydrocarbon scrubber Internal flow Exter...

Страница 28: ...o air filter Pump Restrictor Restrictor Restrictor Zero air filter Photodiode Gas pressure Down stream pressure Hydrocarbon scrubber Internal flow External flow Photomultiplier tube Source UV Zero air...

Страница 29: ...omatic molecule device This device consists of two concentric tubes The internal tube is made of silicone The sample containing HC aromatic molecules flows through the internal tube The HC aromatic mo...

Страница 30: ...to compensate any variation of UV energy Molecules restore a specific fluorescence in the ultraviolet The fluorescence is optically filtered between 300 and 400 nm to eliminate some interfering gases...

Страница 31: ...l is recorded when shutter is open Ratio calculation Equation 1 PM sig PM signal recorded on the ambient air and UV sig UV photodiode signal recorded on ambient air acquisition Ratio calculation Equat...

Страница 32: ...een The minimum response time may also be modified in this menu The response time function changes the a0 a3 and b0 b3 coefficients according to the required response time used by the digital filter T...

Страница 33: ...gical operation and outward communication The measurement board performs measurement acquisition and operation parameter acquisitions All metrological parameters are sent to the ARM20 board through a...

Страница 34: ...COLOR SCREEN TOUCHSCREEN i2C Bus Ethernet output IP protocole UDP USB port USB CONTROLLER BOARD HUB USB USB Communication Various controls 24 V 12 V 5 V and 3 3 V supplies POWER SUPPLY BOARD 24 V 12 V...

Страница 35: ...status modification button 3 12 3 3 BROWSING ERGONOMY 3 13 3 4 ANALYZER FUNCTION DESCRIPTION 3 18 3 4 1 STANDARD FUNCTIONS 3 18 3 4 1 1 Analyzer controls 3 18 3 4 1 2 Measurement channel display 3 20...

Страница 36: ...es 3 40 3 5 2 ZERO AND SPAN POINT CHECK 3 41 3 5 2 1 Equipment Required 3 41 3 5 2 2 Procedure 3 41 3 5 2 3 Use of automatic cycles 3 41 3 5 3 TWO POINT CALIBRATION 3 43 3 5 3 1 Equipment required 3 4...

Страница 37: ...e the dust filter and then connect the 4 mm I D and 6 mm O D air sampling tube to the sample inlet 1 Connect the Ethernet output 7 If necessary connect accessories via USB ports 8 Connect the main pow...

Страница 38: ...nnementS A AF22e Duplication prohibited APRIL 2016 3 4 Figure 3 2 Installation of the sample gas inlet NOTE Recommended height for sampling tap 2 50 m Maximum recommended length of Teflon sampling pip...

Страница 39: ...ational limits The warm up progress icon will disappear and the following homepage is displayed This screen is the analyzer standard function homepage It contains additional pages that are displayed b...

Страница 40: ...rting buttons of the analyzer cycles starts calibration cycle starts zero reference cycle Displays the contextual help Displays analyzer information panel Gives access to the advanced analyzer functio...

Страница 41: ...or the User appear in white with a blue background in zone 2 The function access to the functions depends of the password s level that was entered Each accessible function is activated by contact it t...

Страница 42: ...Then the user touches clicks on the buttons or on a parametric screen part in order to display a pop up that describes the use of the selected function or button The pop up is closed by clicking on I...

Страница 43: ...lay the corresponding page 2 Measurement or configuration area It displays the measurement parameters gas value units or the configurable parameters associated with the selected menu 3 Manual control...

Страница 44: ...r to close the pop up 3 2 1 3 Virtual keyboard input The virtual input screen is used to modify the control screen parameters displayed from the front panel touchscreen This screen is displayed instan...

Страница 45: ...h touchscreens clears digits during input used to move from an input field to another according to its indexation The alphanumeric keyboard 1 button for input validation 2 alphanumeric keyboard with t...

Страница 46: ...dify and validate the field characters 3 2 2 2 Fields requiring parameter selection in a list Many cases are possible depending on the input type Touch the field to be modified The parameter or value...

Страница 47: ...direct i e the first browsing level access to the standard functionalities of the analyzer Activating the buttons of top screen to allows to drag display sideways to view the Real time graph of the i...

Страница 48: ...et Manual selection of zero inlet Manual selection of span inlet Display of analyzer status Indication of analyzer model and time Display of analyzer cycle launching buttons Manual start of calibratio...

Страница 49: ...tion is active on the analyzer the number of connected clients Icon and button definition specific to the information panel Means that the analyzer is equipped with a WIFI key for remote connection fr...

Страница 50: ...nced functions is the following The analyzer advanced functions are the followings Restore factory settings It is recommended to backup before executing this operation Passwords management General con...

Страница 51: ...ristics free and total memory when it is connected to the analyzer Backup of configuration and software on USB when it is connected to the analyzer Restore software and configuration from USB when it...

Страница 52: ...ed by a programmed offset is displayed on the screen This operation allows checking the stability and the span drift to determine the necessity of launching an auto span cycle or programming its repet...

Страница 53: ...automatic zero correction cycle to adjust the zero drift The user activates and visualizes cycle progression in the scroll bar At any time it is possible to abort the current cycle by touching or stop...

Страница 54: ...ment channel section of the General configuration screen shown below see outlined frame with arrow Touch button definitions specific to this section Deletes the selected measurement channel Moves upwa...

Страница 55: ...ist This allows not to select the same channel twice Then activates to validate this selection and close the pop up Do the same for the other channel groups it is possible to select the whole availabl...

Страница 56: ...op see the outlined frame with arrow The user clicks on touches these buttons to display pages successively 3 4 1 3 Measurement channel curve display The user views the measurement channel graphs by t...

Страница 57: ...splay the corresponding curves The Y axis scale setting is automatic and adjusted in real time for current display optimization Maximum six curves can be displayed simultaneously By touching clicking...

Страница 58: ...Then he activates to validate the selected zone is zoomed in in the screen To exit zoom function the user clicks in the screen two times then he activates the action with This zoom function is availab...

Страница 59: ...with arrow This screen displays the entire fluid circuit and the significant operating parameter values Screen legends are as follows 1 SO2 measurement 2 internal temperature of the analyzer 3 photodi...

Страница 60: ...horize selective access user level advanced level expert level The whole advanced functions authorized to users with expert level password are described below 3 4 2 1 Password management The expert us...

Страница 61: ...ifiable with the expert level password only DHCP field it is used to activate the automatic network configuration When ON it allows to connect the analyzer to a TCP IP network whose address is generat...

Страница 62: ...bles or disables the alarm management MEASUREMENT CHANNEL section it is used to configure the measurement channel display 3 4 2 3 Automatic cycle configuration This screen is accessed by touching clic...

Страница 63: ...rt hour to trigger cycles automatically If several cycles are in automatic mode they will be triggered in the following order Zero Ref Calibration Zero and Span AT STARTUP field allows to force a Zero...

Страница 64: ...finition specific to this screen exports the displayed data to a TXT file opens the selection popup of dates and times period the user wants to view Icon meaning indicates an average stored with an al...

Страница 65: ...ly connected clients Click on touch to close the pop up 3 4 2 8 Diagnostic functions This screen is accessed by touching clicking on It consists of four pages displayed by touching clicking on the whi...

Страница 66: ...lyzer signal values The third page displays the control status the component list and status when detected on analyzer startup The ON OFF buttons are used to check that the corresponding elements are...

Страница 67: ...e The user touches clicks on to access the diagnostic function fourth page The fourth diagnostic function page displays the alarm threshold exceedance values and shows the concerned faulty element in...

Страница 68: ...l icon will remain displayed and the standby icon will not be displayed Under these conditions to verify if the measurement or standby status is active the user checks the button is red outlined or no...

Страница 69: ...ef field displays the coefficient used for unit conversion for ex ppb g Nm3 This function is only applied if unit is g m3 mg m3 g m3 Offset and Span Coef fields these two values are used to calibrate...

Страница 70: ...new carbon kicker filter autonomy day number The analyzer decrements each day from this value refer to synoptic display of the standard function screens A control is triggers when it lasts 120 day aut...

Страница 71: ...for performing the airproof test of the analyzer fluid circuit The user must follow the instructions detailed in the white outlined frame When the user launches the airproof test the analyzer switches...

Страница 72: ...ed to measure the analyzer drift in time without modifying the Span Coeff This check can be performed by using the internal zero air and the span gas Periodicity generally 24 hours in automatic cycle...

Страница 73: ...refer to Figure 3 3 External solenoid valve control SPAN INLET Manifold Solenoid valve Needle gate Double pressure regulator Gas cylinder Vent ANALYZER Figure 3 3 Example of a pressurized gas connecti...

Страница 74: ...range scale 2 point calibration SO2 cylinder 2 accuracy with a concentration of approximately 80 of the full scale of the measurement range used Dynamic generation of one scale point using a cylinder...

Страница 75: ...e the key to select the span inlet port Wait for measurement to stabilize Result will be compared to the concentration generated by the device used taking account its accuracy as well as a possible pr...

Страница 76: ...EnvironnementS A AF22e Duplication prohibited APRIL 2016 3 42...

Страница 77: ...switches automatically to the programmed inlet port if the optional programmed inlet is set to ON Otherwise use the key to select span inlet or the key to select sample inlet before starting a calibra...

Страница 78: ...t be the same as for zero measurement Flow controler Double pressure reducing valve Flow rate measurement Dilution air cylinder or zero air generator Mixing chamber Flow controler Flow rate measuremen...

Страница 79: ...ration between 15 and 90 of the full scale of the measurement range used Carrier gas may be nitrogen if the system allows a higher dilution ratio than 600 1 3 5 4 3 Procedure Turn on the analyzer at l...

Страница 80: ...e is SO2 concentration of generated gas at manifold outlet is SO2 concentration of certified cylinder is SO2 flow in NI min is dilution air flow in NI min To calculate read value in ppb to be taken in...

Страница 81: ...RTS SET FOR AF22e MAINTENANCE 4 17 Figure 4 1 Sample inlet dust filter replacement 4 5 Figure 4 2 Internal zero filter replacement 4 8 Figure 4 3 KNF pump head dismantling 4 10 Figure 4 4 Diaphragm re...

Страница 82: ...EnvironnementS A AF22e Duplication prohibited APRIL 2016 4 2 Page intentionally left blank...

Страница 83: ...rer shall not be responsible for any adverse outcomes resulting from the following Use of the monitor by unqualified service personnel Use of the monitor under conditions other than those specified in...

Страница 84: ...Sheet N Sample inlet dust filter replacement 2 to 4 weeks 4 3 1 Optical electric and fluid parameter check 1 month 4 3 2 Internal zero filter replacement 6 months 4 3 3 KNF pump maintenance 1 year 4...

Страница 85: ...g 2 upwards Remove the worn filter 3 Place the new filter 4 on the filter holder without the separating blue sheet Make sure that the filter correctly covers the filter holder surface and that it is c...

Страница 86: ...ATION SHEET 4 3 2 Scope Optical electric and fluid parameter check PAGE 1 2 Periodicity 1 month Flow rate check Connect a flow meter on the AF22e sample inlet Make sure the flow rate value indicated o...

Страница 87: ...listed in the table below Signals Min values Typical values Max values UV ref 250 mV N A N A HV PM 1600 mV 2800 mV 4000 mV Internal T 5 C 30 C 50 C Measurement chamber T C 48 C 50 C 52 C Gas pressure...

Страница 88: ...al zero filters 3 and replace with new ones Reconnect the hydrocarbon scrubber tube 1 and the solenoid valve tube 2 Plug in the power cable and power on the analyzer Click on the alarm icon displayed...

Страница 89: ...n off the analyzer and unplug the power cable Unscrew the cover screw located on the analyzer rear panel Remove the protective cover Disconnect the pump from its electrical connection Unscrew the flui...

Страница 90: ...turning a screwdriver blade in the slots 12 in order to access the eccentric 13 Unscrew the pump head screws 14 to remove the cover 8 and the cylinder head 9 from the pump body 10 in order to release...

Страница 91: ...cause it is critical to install the same washer number at the same location during reassembly To change the diaphragm 15 put the washers 19 between the diaphragm and the cupel 18 back in place and ins...

Страница 92: ...ement The valves are located in the cylinder head Replace the valves 22 and the O rings 23 taking care to correctly fit together the O rings in their housings 22 valves 23 O rings Figure 4 5 Valves an...

Страница 93: ...ric cover 11 Reassemble the pump on its holder replace the screws and tighten the screws Reassemble the pump with its holder inside the analyzer replace the screws and tighten the screws Reconnect the...

Страница 94: ...ard 3 connector 2 to disconnect the UV source assembly 1 Slightly pull up the measurement chamber UV source assembly to remove from the foam block 4 and loosen the two UV source holder screws 5 Then h...

Страница 95: ...ction tube 12 Replace UV lamp 11 with a new one Insert the new UV lamp inside its protection tube 12 and take care to center the UV lamp window MAX OUTPUT side 13 with the protection tube window 14 Re...

Страница 96: ...Diagnostic functions alarm input output mux screen to read the UV Signal parameter value Wait approximately 10 15 min for UV signal value stabilization Adjust the UV source assembly 3 position horizon...

Страница 97: ...L 2016 4 17 4 4 KITS AND SPARE PARTS SET FOR AF22e MAINTENANCE Maintenance kit for 1 year Ref AF22e K Line Nb Designation Reference Qty 1 SO2 zero filter F05 0128 C SAV 4 2 Teflon filter porosity 5 m...

Страница 98: ...EnvironnementS A AF22e Duplication prohibited APRIL 2016 4 18 Page intentionally left blank...

Страница 99: ...power board diagram 5 18 Figure 5 8 ARM20 board 5 19 Table 5 1 List of faults and corrective actions 5 4 Table 5 2 Interconnection board configuration and LEDs description 5 10 Table 5 3 Controller bo...

Страница 100: ...EnvironnementS A AF22e Duplication prohibited APRIL 2016 5 2 Page intentionally left blank...

Страница 101: ...performs self tests of its main components When any malfunction is detected the alarm icon is displayed and blinks on the home page and in the menu bar of all software screens next to the date and an...

Страница 102: ...x value 10 days Internal zero filter has reached its lifetime Lifetime countdown of internal zero filter is incorrect Replace internal zero filter and reset lifetime countdown to 180 days Reset lifeti...

Страница 103: ...aulty Open sample zero or span inlet analyzer ports Check dust filter and replace if necessary Check if the sampling line is dirty or kinked Check solenoid valve block status clean with dry oil free c...

Страница 104: ...ue N A Max value N A Chamber temperature sensor cable is disconnected Connect chamber temperature sensor cable Cham T open Min value N A Max value 70 C Chamber temperature sensor is connected but conn...

Страница 105: ...rd is faulty Connect PM preamplifier board measurement board cable Replace PM preamplifier board UV ref Min value 130 mV Max value UV lamp is not aligned UV lamp is faulty Aligned UV lamp as described...

Страница 106: ...normal power consumption is detected 24 V power supply is not stable Replace supply board Replace measurement board Check that all devices as solenoid valves laminar heating shutter or other external...

Страница 107: ...Duplication prohibited AF22e EnvironnementS A APRIL 2016 5 9 Page intentionally left blank...

Страница 108: ...ero SV J8 Span SV J10 Rack fan J15 24 V Estel board power supply 2e series rear panel J19 SV zero span and SV measurement power supply rear panel J23 External TCP IP LAN J24 Internal TCP IP J26 UV lam...

Страница 109: ...Duplication prohibited AF22e EnvironnementS A JUNE 2016 5 11 Figure 5 1 Interconnection board diagram...

Страница 110: ...Table 5 3 Controller board configuration Jumpers Connections J2 Main connector Tests points Signals PT1 0 V GND PT2 0 V GND PT3 Power supply 24 V PT4 Power supply 12 V PT5 Power supply 5 V PT6 Power...

Страница 111: ...Duplication prohibited AF22e EnvironnementS A JUNE 2016 5 13 Table 5 4 Power supply board Jumpers CONNECTION J1 Main connector Test point Signal PT1 0 V GND Figure 5 3 Power supply board diagram...

Страница 112: ...rd connector J42 Photodiode board connector Test points Signal PT1 GND PT2 Analog GND PT41 PM signal high gain amplification PT42 UV photodiode signal PT43 PM HV setting PT114 PM signal low gain ampli...

Страница 113: ...Duplication prohibited AF22e EnvironnementS A JUNE 2016 5 15 Figure 5 4 Measurement board diagram...

Страница 114: ...e Duplication prohibited JUNE 2016 5 16 Table 5 6 Photodiode board configuration Jumpers Connections J1 Main connector Tests points Signals PT1 0 V GND PT2 Photodiode signal Figure 5 5 Photodiode boar...

Страница 115: ...ment P1 PM signal amplification high gain P2 PM signal offset high gain P4 PM signal amplification low gain P5 PM signal offset low gain Test points Signal PT1 GND PT2 PM signal high gain PT6 PM signa...

Страница 116: ...bbon cable to Interconnection board J3 UV lamp connector Test points Signal PT1 GND PT2 12 V supply PT3 5 V supply PT5 PM setting PT6 I lamp LED N Identification Color Turned on Turned off Blinking LE...

Страница 117: ...prohibited AF22e EnvironnementS A JUNE 2016 5 19 Table 5 9 ARM20 board description Identification Functions J1 LCD screen J2 Interconnection board link J5 Touchscreen J9 Push button link Figure 5 8 A...

Страница 118: ...EnvironnementS A AF22e Duplication prohibited JUNE 2016 5 20 Page intentionally left blank...

Отзывы:

Нет отзывов