manualshive.com logo in svg

ProMinent TUC 5, Assembly And Operating Instructions Manual, Page: 52 / 68

Share
Download
ProMinent TUC 5 Assembly And Operating Instructions Manual Download Page 52

4.

Press EXIT to start calibration.

ð

The number counts down from 30 in the lower display.

5.

At the end of the process, the lower display alternates

between 10 and the EXIT key and asks for the 10.0 NTU

standard solution.

A0525

Fig. 42: [10 NTU calibration] display

A0524

Fig. 43: [Start calibration] display
6.

If the alternating display of 10 and the EXIT key is not dis‐

played, press the DOWN key until 10 appears on the display.

7.

Insert the 10 NTU standard solution. Rotate the standard sol‐

ution in the measuring chamber so that the lowest value is

displayed in the upper line of the display.

8.

Press EXIT to start calibration.

ð

The number counts down from 60 in the lower display.

9.

At the end of the process, the lower display alternates

between 02 and the EXIT key and asks for the 0.02 NTU

standard solution.

Operation

 

 

 

52

Summary of Contents for TUC 5

Page 1: ...et group at least instructed persons 999865 Version BA DT 070 01 22 EN Please carefully read these operating instructions before use Do not discard The operator shall be liable for any damage caused by installation or operating errors The latest version of the operating instructions are available on our homepage ...

Page 2: ...formation includes detailed descriptions of the haz ardous situation see Ä Chapter 1 1 Labelling of Warning Informa tion on page 5 The following symbols are used to highlight instructions links lists results and other elements in this document Tab 1 More symbols Symbol Description Action step by step Outcome of an action Links to elements or sections of these instructions or other applicable docum...

Page 3: ...1 Overview of equipment Operating elements 24 5 1 1 The display 25 5 2 Overview of the operating modes 25 5 2 1 Operating mode AUTO 27 5 2 2 Operating mode CAL 27 5 3 Operating mode CONFIG 27 5 4 Operating mode HOLD 28 6 Commissioning 29 6 1 Inserting the dessicant 30 6 2 Starting the system 31 6 3 Routine measurement 32 6 4 Access code 32 6 5 Device configuration 33 6 5 1 Selecting the output 33 ...

Page 4: ...49 7 1 3 Indexing the calibration cuvettes 50 7 1 4 Calibration process 51 7 1 5 Aborting calibration 53 7 1 6 Incorrect calibration 54 7 1 7 Setting the offset 54 7 1 8 Calling up data 55 8 Maintenance troubleshooting and repair 57 8 1 Ultrasonic cleaning 57 8 2 Condensation on the cuvette 58 8 3 Cleaning the flow cuvette 60 8 4 Replacing the light source 61 8 5 Bubbles in the sample water 61 8 6...

Page 5: ...rce of the danger Consequence Fatal or very serious injuries Measure to be taken to avoid this danger Description of hazard Denotes an immediate threatening danger If the situation is disregarded it will result in fatal or very serious injuries WARNING Nature and source of the danger Possible consequence Fatal or very serious inju ries Measure to be taken to avoid this danger Denotes a possibly ha...

Page 6: ...ly damaging situation If the situation is disregarded the product or an object in its vicinity could be damaged Type of information Hints on use and additional information Source of the information Additional measures Denotes hints on use and other useful informa tion It does not indicate a hazardous or dam aging situation Introduction 6 ...

Page 7: ...er authorised distribution partner Trained qualified per sonnel A trained qualified employee is deemed to be a person who is able to assess the tasks assigned to him and recognize possible hazards based on his training knowledge and experience as well as knowledge of pertinent regula tions A trained qualified employee must be able to perform the tasks assigned to him independently with the assista...

Page 8: ...ciated hazard assessment for the worksta tions affected WARNING Live parts Possible consequence fatal or very serious inju ries Measure Disconnect the mains power supply before opening the housing Disconnect damaged or faulty instruments from the power supply as well as instruments that have been tampered with WARNING Unauthorised access Possible consequence fatal or very serious inju ries Measure...

Page 9: ...ating instructions and in the oper ating instructions for the individual compo nents NOTICE Correct sensor operation Damage to the product or its surroundings Correct measurement and control is only pos sible if the sensor is working perfectly Check and calibrate the sensor regularly 2 2 Correct and proper use NOTICE Correct and proper use The device is designed to measure the turbidity of water T...

Page 10: ...lies with the USA standard US EPA 180 1 Both versions of the device are equipped with an ultrasonic cleaning device Ultrasonic cleaning of the measuring cuvette extends the calibration and maintenance intervals in media prone to the formation of films DULCO turb C Part number ISO 7027 DIN EN 27027 US EPA 180 1 Ultrasonic cleaning TUC 5 1115440 yes no yes TUC 6 1115441 no yes yes An inlet side pres...

Page 11: ...F 122 F Power supply 100 240 V AC 47 63 Hz 80 VA Insulation value Dual insulation degree of contamination 2 overvoltage category II Ambient conditions Not recommended for use outdoors Max operating altitude up to 2000 metres Up to 95 relative humidity non condensing Housing ABS Compliance with statutory regulations and certifica tions White light version conforms to U S EPA 180 1 Infra red version...

Page 12: ... an environmentally responsible way All packaging com ponents carry the corresponding recycling code INFORMATION A packet of dessicant is included in the scope of delivery of the DULCO turb C Do not mistake this for packaging material Do not throw away the dessicant Tab 2 The following parts are delivered as part of the standard scope of delivery of a DULCO turb C Designation Quantity DULCO turb C...

Page 13: ...pleted Ensure that there is unimpeded access for operation Make sure that the fastening is secure and pro tected from vibrations Avoid direct sunlight Permissible ambient temperature for the sensor at its installed position 1 50 C at max 95 relative air humidity non con densing Consider the permissible ambient temperature of the connected components Only use the device with water that is free of c...

Page 14: ...orizontal position Ensure that your device is horizontal Clearance above the sensor Leave a minimum clearance of 200 mm above the DULCO turb C for any work required on the DULCO turb C Fasten the DULCO turb C using four M6 screws and fix the terminal box in place using two M4 screws A0515 A B Fig 1 The drawing is not to scale All values are in mm Installation mechanical Assembly and installation 1...

Page 15: ...top part of the device Select a position with sufficient room to enable correct configura tion of the device when it is being installed A3407 A B Fig 2 The drawing is not to scale All values are in mm A Terminal box B DULCO turb C housing 1 Fasten the terminal box A to the wall with two M4 screws Assembly and installation 15 ...

Page 16: ...d back any sample water into the process CAUTION Algae growth under the influence of light Possible growth of algae if unsuitable hoses are used Do not use transparent hoses if the installation is exposed to strong light This prevents the forma tion of algae in the installation Permissible operating parameters Maximum liquid temperature 50 C Maximum pressure 7 bar Flow rate 6 60 l h minimum feed p...

Page 17: ...nnector 4 75 mm inner diameter 8 mm outer diameter Hose connector for the free sample water drain 4 Hose connector 4 75 mm inner diameter 8 mm outer diameter Hose connector for the sample water inlet 5 Detail hose 6 Detail hose connector union nut 7 Detail hose connector insert 8 Pressure reducer for max pressure 7 bar 9 Shut off clamp To shut off the feed in an emer gency or for necessary work 10...

Page 18: ...e of the DULCO turb C as shown in the figure Fig 3 5 Check whether the hose is completely pressed against the hose stop Pull gently but firmly on the hose to check whether the hose is fitted tightly 6 Connect the other end of the hose to a suitable drain or channel Observe the regulations applicable to your equip ment and configuration when connecting 7 After connection carefully check all connect...

Page 19: ...e lengths of up to 900 metres can be used The final device in a bus must be equipped with a 120 Ohm resistor to avoid signal overlapping To avoid damage only disconnect and connect the cables of the RS 485 interface when the DULCO turb C is switched off A3409 1 2 3 Fig 4 Cable assignment of the DULCO turb C 1 Sensor cable 2 Liquid tight threaded connector 3 Terminal box Assembly and installation 1...

Page 20: ...ns cable The threaded connectors are suitable for cable diameters of 5 8 mm 0 230 in to 10 mm 0 395 in II Alarm cable threaded connector III Sensor cable threaded connector 1 Alarm terminal 1 and 2 0 25 1 5 mm2 max imum 2 A 2 Terminal 4 20 mA RS 485 0 25 1 5 mm2 3 Terminal box 4 Mains cable terminal 0 25 1 5 mm2 Assembly and installation 20 ...

Page 21: ...en the housing screws 11 Once again check the seating of the seal and threaded con nectors The degree of protection stated on the nameplate can only be achieved if installation has been done properly 4 3 1 Terminal strip P1 connectors DANGER Switch off the device and disconnect it from the power supply before making or changing any con nections The terminal strip P1 is located close to the power c...

Page 22: ...al reflections on the line Do not route the RS 485 cable in the same cable duct as the power supply Make sure that the power supply is disconnected before making the connections to avoid damage to the device The connectors are labelled under the large terminal block These connectors are located on the left side in the bottom row To open the connector insert a 3 mm 1 8 inch slotted head screwdriver...

Page 23: ...gently lifting the screwdriver upwards The connection is tightened by pulling out the screwdriver 4 3 2 Closing the terminal box CAUTION Maintaining water tightness Make sure that the cover of the terminal box is sit ting tightly and is securely closed Water entering the terminal box can lead to a danger of electric shock and damage devices Securely close the terminal box by screwing down the cove...

Page 24: ... 3 RIGHT key 4 EXIT key 5 DOWN key 6 LEFT key Function Description LCD display The parameters of the respective operating status are shown on the LCD dis play UP key To increase a displayed number DOWN key To decrease a displayed number EXIT key To exit the configuration menu in Automatic mode RIGHT key To apply the setting and return to the previous menu LEFT key To apply the setting and move to ...

Page 25: ... The display has two symbols that display the use of the access code and offset mode n 4 The current operating mode is also displayed by arrows AUTO normal mode CAL calibration CONFIG configuration 5 2 Overview of the operating modes There are four operating modes AUTO CAL CONFIG and HOLD Use the UP DOWN arrow keys to move between AUTO CAL CONFIG and HOLD and then use the EXIT key to select A flow...

Page 26: ...A3413 Fig 8 Operating modes Operating diagram 26 ...

Page 27: ...ntacts and the 4 20 mA are frozen in the current status while the device is in calibration mode In calibration mode the device has a timeout function that auto matically allows the system operation to return to AUTO mode after 15 minutes if the device has not been used for 15 minutes 5 3 Operating mode CONFIG CONFIG is the configuration operating mode In this operating mode you can adapt the devic...

Page 28: ...f after 15 minutes and returns to AUTO operating mode Call up the HOLD operating mode of the device by pressing the UP or DOWN arrow keys until the arrow lights up beside HOLD and then press the EXIT key Once this has been selected the letters at the top change from OFF to ON A3414 Fig 9 OFF HOLD operating mode can be used during all maintenance func tions such as for example replacing the cuvette...

Page 29: ...d values over 1000 NTU are outside of the measuring range of this DULCO turb C Measured values above 11 NTU 110 NTU 1100 NTU cause the display to flash and a message to be displayed indicating too high a measured value depending on the measuring range selected An arrow is positioned next to AUTO during normal operation of the DULCO turb C In this state the bottom row indicates the unit of measure ...

Page 30: ...turation of the dessi cant A damaged seal can lead to premature saturation of the dessicant Check this seal every time the dessicant is replaced Correct the seating of the seal or replace the seal if necessary 1 INFORMATION Remove the transport retainer before inserting the bag of dessicant for the first time You can sub sequently dispose of this pipe 2 Loosen the 4 screws at the corners of the ho...

Page 31: ...aging If you do not have any original dessicant use 113 170 grammes of zeolite based dessicant molecular sieve of similar quality 3 Å pore width Silica gel or other chemical dessicants may not be used 6 2 Starting the system The following steps describe the measurement process with this device 1 Switch on the device and allow it to warm up 45 60 minutes during initial commissioning 2 Check whether...

Page 32: ... sample rate of 1 second 6 4 Access code INFORMATION We urgently recommend the use of a security access code to prevent unauthorised access to the system and the data The sensor is equipped with a security access function that you can activate When this option is switched on the user needs to enter an access code into the device to access any mode other than AUTO A three digit code is used When th...

Page 33: ...e second number of the access code flashes 3 Use the UP or DOWN key to select the correct number and confirm it with the EXIT key ð The third number of the access code flashes 4 Use the UP or DOWN key to select the correct number and confirm it with the EXIT key ð If you have selected the valid access code then you will now have access to the sensor s calibration mode In the event that the access ...

Page 34: ...e I O interface Addr 1 255 Selection of the device address MBUS ASCII RTU Selection of ASCII or RTU 6 5 2 Setting the fault current ERLV A0625 Fig 16 Setting the fault current ERLV The 4 20 mA signal output can be used in the event of a system error in the DULCO turb C when the ERLV ON function is switched on to display the problem Fault currents of 4 00 mA 2 00 mA or 0 mA can be selected In the e...

Page 35: ...ce address MBUS ASCII RTU Selection of ASCII or RTU 6 5 4 Inserting the Modbus address Selection of the address Select the Modbus address of the DULCO turb C from 1 255 Additional information about Modbus can be obtained from ProMi nent on request 1 Call up CONFIG mode by pressing the UP or DOWN key until the arrow lights up beside CONFIG and then press the EXIT key 2 Press the right arrow key to ...

Page 36: ...nternal system error The relays trigger an alarm in the event of an internal system error regardless of the turbidity values set You can either switch off the alarm OFF or program it so that it works in accordance with one of the following modes n HI alarm The relay triggers the alarm when the turbidity value exceeds the programmed alarm limit value for a minimum specified time n LO alarm The rela...

Page 37: ...elow the Alarm setpoint for at least the number of seconds set here before the alarm is deactivated The alarm will not be deacti vated if the time of the Alarm delay time off has been set to 5 seconds and the turbidity remains below the Alarm setpoint for only 4 seconds The sensor deactivates the alarm as soon as the turbidity remains below the Alarm setpoint for a min imum of 5 seconds A0531 Fig ...

Page 38: ...DLY 6 5 6 Setting the OFFSET INFORMATION The OFFSET symbol is displayed as soon as an offset is used The maximum offset is 1 00 NTU A complete cali bration is recommended if the deviation of the device is greater than 1 NTU A0624 Fig 22 Setting the OFFSET Commissioning 38 ...

Page 39: ...he reference device then no offset adjustment or calibration is required and the procedure can be aborted at this point ð Should the values differ significantly but less than 1 NTU then proceed as described below 4 Select the Offset function by pressing the UP or DOWN key until the arrow is displayed beside CONFIG 5 Press until OFST is displayed ð At this point the top row of the display indicates...

Page 40: ...t response time i e the lowest number if rapid changes are expected that need to be monitored The displayed number is a relative response time The approximate response time in seconds can be calculated by the number displayed multiplied by 5 6 5 8 Display resolution A0534 Fig 24 Display resolution Function Options Information Resolution RES 1 0 0001 Factory setting 0 01 The DULCO turb C is able to...

Page 41: ... 1 10 Factory setting 8 Adjust the backlighting of the LCD display as required 6 5 10 Display units A0536 Fig 26 Display units Function Options Information Units UNIT n NTU n FNU Factory setting NTU Select a unit to display the tur bidity measurement NTU Nephelometric Turbidity Units or FNU Formazin Nephelometric Units Commissioning 41 ...

Page 42: ...s Information Ultrasonic cleaning CLN ON OFF Factory setting ON Switching the ultrasonic cleaning function on and off If the ultrasonic cleaning function is working properly AUTO flashes in measuring mode AUTO 6 5 12 RS 485 parameters A3419 Fig 28 RS 485 parameters Function Options Information Parity PRTY nOnE ODD E Factory setting nOnE The parity bit required for the communication software Stop 1...

Page 43: ...e to adapt to a higher level control e g PLC or SCADA One number corresponds to 0 001 mA 6 5 14 Setting the 20 mA output Provides for the precise adaptation of the output 20 0000 mA signal to the 20 0000 mA input of a higher order management system A0608 Fig 30 Setting the 20 mA output Function Options Information Setting the 20 mA output 1000 1000 Adjust the mA value to adapt to a higher level co...

Page 44: ... to select the value of the first number Use the right arrow key to select the next number and repeat the process for all numbers Scroll through the numbers to the next menu 6 5 16 Protocol interval setting the interval for logged files This menu defines how often the measured values are logged The setting is in minutes The interval can be set at from 1 60 minutes 1 Call up CONFIG mode by pressing...

Page 45: ...e by pressing the UP or DOWN keys until the arrow lights up beside CONFIG Then press EXIT 2 Press the right arrow key to move to the next menu until DOWN is displayed A3449 Fig 33 Data download 3 The selection can be adapted using the UP or DOWN keys 4 As soon as the selection has been made press the right arrow key to acknowledge the selection and move to the next menu Use the EXIT key to move to...

Page 46: ...Set summertime DST in this menu Here you can only switch on or off the summertime parameter DST 6 5 19 Updating the software installing the latest software or changing the scope 1 Call up CONFIG mode by pressing the UP or DOWN keys until the arrow lights up beside CONFIG Then press EXIT 2 Press the right arrow key to move to the next menu until UPDT is displayed Then press EXIT 3 The software vers...

Page 47: ...e 5 Range changes can either be made with the current version or a later version These other ranges are located on the flash drive on the circuit board of the DULCO turb C A3452 Fig 36 Range 10 100 1000 6 Once a flash drive with valid files has been found use the UP or DOWN keys to select the desired range 10 100 1000 7 Press EXIT to start the update 8 While the system is performing the update the...

Page 48: ... the end of the installation the system is automatically switched off and restarted The entire process takes up to 90 seconds ð Be sure to check the configuration as changes may have been made either by new software or a new range 11 You will most likely need to calibrate the DULCO turb C You will see a screen similar to the one shown below A3455 Fig 39 Calibration of the DULCO turb C needed Commi...

Page 49: ...RMATION If the sensor is operated over its complete meas uring range of 0 02 NTU 1000 NTU then you need to perform full calibration with all 3 standard solutions 0 02 NTU 10 0 NTU and 1000 NTU If the sensor is only operated in measuring ranges below 10 NTU then simplified calibration with the standard solu tions 0 02 NTU and 10 0 NTU can be performed Calibration set order number 1037699 7 1 2 Othe...

Page 50: ...nt on the display NOTICE Freezing of the standard solution Do not allow the standard solutions to freeze Not even for short periods of time Handling the standard solutions n Gently shake the standard solution 1000 NTU before using it for calibration n All standards need to be poured from the storage bottle into the cuvette before use The contents of the cuvette can then be used for 24 hours n Do n...

Page 51: ...utions for calibration during calibration A3420 Fig 40 100 NTU calibration display A3421 Fig 41 Start calibration display 1 Select the calibration function of the DULCO turb C by pressing the Exit key once The arrow next to CAL lights up on the display The number 100 the value of the standard solution requested and the symbol of the Exit key alternate on the lower display The upper display shows t...

Page 52: ... alternating display of 10 and the EXIT key is not dis played press the DOWN key until 10 appears on the display 7 Insert the 10 NTU standard solution Rotate the standard sol ution in the measuring chamber so that the lowest value is displayed in the upper line of the display 8 Press EXIT to start calibration ð The number counts down from 60 in the lower display 9 At the end of the process the low...

Page 53: ...422 Fig 46 CAL Good 12 The device displays CAL Good at the end of the process 13 Press EXIT to confirm The display briefly shows STRT and then changes to AUTO 7 1 5 Aborting calibration 1 You can abort calibration at any time during the calibration process by pressing the DOWN key until ABRT is dis played Then press EXIT ð The device returns to AUTO mode 2 The device saves and uses all points that...

Page 54: ...s up when an offset is used The maximum deviation is 1 00 NTU n A complete calibration is needed if the deviation of the device is greater than 1 NTU 1 Note the measured value recorded by the sensor 2 Take a sample of the process water being monitored by the sensor Use a laboratory turbidity measuring device to measure the turbidity 3 Compare the turbidity recorded by the sensor with the tur bidit...

Page 55: ...a The data is available in different forms The data can be displayed on the screen logged in the device read via Modbus or output via 4 20 mA 7 1 8 1 USB connector The USB connection can be used to upload new software or down load data and calibration reports using a USB flash drive Firmware updates are performed by loading the firmware onto a USB flash drive and inserting this flash drive into th...

Page 56: ...rrent day is closed and the file for a new day is opened at midnight each day The USB connector cover supplied must remain firmly in place when the USB connector cover is not in use to ensure leak tight ness and humidity control If the USB connector cover is not installed correctly this will affect the life of the dessicant 7 1 8 3 Modbus communication Communication via the Modbus protocol is poss...

Page 57: ...ed to extend the time between cleaning Please note that the system requires the use of a special cuvette which is supplied in the scope of delivery of the device This cuv ette must be used for the system to work correctly The system sends an ultrasonic frequency via spring connections to a piezo transducer The piezo transducer is attached to the bottom of the special cuvette The system can detect ...

Page 58: ...e to reduce the cold mass 3 Pour clean warm water into the cuvette if it is available 4 Dry and clean the outside of the cuvette 5 Make sure that the cuvette is firmly inserted into the flow unit 6 Refit the flow unit 7 Restart the flow of sample water As soon as the flow unit has been inserted into the device the drying system prevents the formation of further condensate inside the device regardl...

Page 59: ...43 1 7 6 5 4 3 2 8 9 Fig 49 Assembly 1 O ring measuring cuvette 2 Locking ring 3 O ring flow unit 4 Sealing head 5 Upper part of the housing 6 Knurled head screws Maintenance troubleshooting and repair 59 ...

Page 60: ...ing of the cuvette depends on the use of the system and the water quality A3444 4 3 2 1 Fig 50 Parts of the ultrasonic cleaning system 1 Sensor top view 2 Ultrasonic spring connectors 3 Ultrasonic transmitter 4 Flow cuvette 8 3 Cleaning the flow cuvette Measuring cuvettes which are used for sampling and also for the flow unit need to be clean and free of spots or scratches We rec ommend checking t...

Page 61: ...ugh a small water or air leak This leak needs to be rectified in the pipework The air is coming from the solution if you do not see air entering the inlet pipe but it appears on the inside of the glass cuvette This can usually be corrected by applying pressure to the rotating back pressure clamp on the OUT side of the cuvette This keeps the air in the solution so that the air cannot be detected by...

Page 62: ...correctly and the FAIL message will appear in the LCD display Both alarm relays are activated and the current output is set to 2 mA 8 6 1 System error messages Fault message Possible cause Measure MA 4 20 mA circuit open Check cabling DESC Drying agent saturated Exchange drying agent Refer to Ä Chapter 6 1 Inserting the dessicant on page 30 LAMP Lamp failure Exchange lamp Contact customer service ...

Page 63: ...ticles of dirt in the cuvette Clean the cuvette of any particles of dirt Display values lower than expected Incorrectly calibrated Calibrate Upper row in the display flashes Sample has exceeded the per missible measuring range Check the sample The turbidity of the sample may be too high to be read by the DULCO turb C Upper display shows FILE Update not possible New file not found Check the USB fla...

Page 64: ...te for ultrasonic cleaning 1037878 Infra red lamp 1037702 White light lamp 1037703 Hose kit 1037879 Flow unit 1116184 Housing seal Pressure regulating valve 1037885 Tab 4 Accessories Accessories Part number Calibration kit 1037699 Flow controller 1037880 Air bubble trap 1037700 Spare parts and accessories 64 ...

Page 65: ...air To do so remove all traces of hazardous substances Refer to the Material Safety Data Sheet for your feed chemical A current Declaration of Decontamination is available to download on the ProMinent website In accordance with the European Directive 2012 19 EU on waste electrical and electronic equipment this device features the symbol showing a waste bin with a line through it The device must no...

Page 66: ...distributed by us Any modification to the product not approved by us will invalidate this declaration Designation of the product Turbidity Sensor DULCO turb C Product type TUC5 TUC6 Serial number see nameplate on the device Relevant EU directives Low Voltage Directive 2014 35 EU EU EMC Directive 2014 30 EU RoHS Directive 2011 65 EU Harmonised standards applied in particular EN 61010 1 2010 EN 6132...

Page 67: ... 2 H HI alarm 36 I Installation position 13 IP 66 degree of protection 21 L Links to elements or sections of these instruc tions or other applicable documents 2 Liquid temperature 16 LO alarm 36 M Menu Alarm 37 More symbols 2 N Non discriminatory approach 2 NTU 29 O Operating position 13 P Pressure 16 R Reading position 13 Recycling 12 13 Relevant EU directives 66 S Serial number 66 Setpoint of th...

Page 68: ...999865 3 en_GB 2022 ProMinent GmbH Im Schuhmachergewann 5 11 69123 Heidelberg Germany Telephone 49 6221 842 0 Fax 49 6221 842 419 Email info prominent com Internet www prominent com ...

Reviews:

No comments