VK 200 Tablet Hardness Tester Operator`s Manual
Contents
1. NOTICE This document contains references to Varian Please note that Varian Inc is now part of Agilent Technologies For more information go to www agilent com chem Big Agilent Technologies VK 200 Tablet Hardness Tester Operator s Manual P N 70 9015 November 2010 Revision H Limitation of Liability The information in this document is subject to change without notice Varian Inc makes no warranty of any kind with regard to this material including but not limited to the implied warranties or merchantability and fitness for a particular purpose Varian Inc shall not be liable for errors contained herein or for incidental consequential damages in connection with the furnishing performance or use of this material All rights are reserved Reproduction adaptation or translation without prior written permission is prohibited except as allowed under copyright laws First Edition November 2010 VK 200 Tablet Hardness Tester Operator s Manual Part Number 70 9015 Revision H Printed in the United States of America The following terms are trademarks of Varian Inc Benchsaver e Practical Solutions BIO DIS III QA and QAII e Enhancer Cell e TruCenter Full Flow Filters VanKel e Peak Vessel VK All other trademarks are the property of their respective owners Varian Inc 13000 Weston Parkway Cary North Carolina 27513 2250 800 229 1108 919 677 1108 Fax2. wired supply outlet or lack of proper electrical grounding can create a fire hazard or a potentially serious shock hazard and could seriously damage the instrument and any attached ancillary equipment Always use a three wire outlet with ground connection which is adequately rated for the load The installation must comply with local state and federal safety regulations Do not connect the instrument to the main power supply until you have made sure that the operating voltage is correctly set for the main power supply in the specific outlet in your laboratory to which the equipment will be connected Other Other specific warnings and cautions appear in the manuals where appropriate and detail the specific hazard describe how to avoid it and specify the possible consequences of not heeding the warning or caution Warning A Warning message appears in the manual when failure to observe instructions or precautions could result in death or injury Symbols depicting the nature of the specific hazard are also placed alongside warnings Varian Inc Revision H 11 10 VK 200 Tablet Hardness Tester Page 7 P N 70 9015 Operator s Manual Safety Practices and Hazards These symbols may be used on warning labels attached to the instrument When you see one of these symbols you must refer to the relevant operation or service manual for the correct procedure referred to by that warning label The meaning of the symbols that appe
3. 919 677 1138 www varianinc com ap TS VARIAN Copyright c 1999 2010 by Varian Inc Table of Contents Chapter 1 Safety Practices and Hazards 5 Electrical Hazards 6 Other 6 General 9 WEEE Directive 10 Chapter 2 Introduction 11 How Your VK 200 Works 11 Conventions Used in this Manual 13 Chapter 3 Installation and Setup 15 Unpacking Your VK 200 15 Connecting the Report Center Printer 16 Electrical Connections 17 Installing Accessories 17 Initial Power Up 18 Varian Inc Table of Contents Chapter 4 Chapter 5 Chapter 6 Operation 19 Selection of Measurement Units 19 Testing Tablets 20 Thickness and Diameter Testing with Optional Thickness Gauge 20 Hardness Testing 22 Optional Report Center Printer 23 Enabling and Disabling the Report Center Printer 24 Maintenance and Troubleshooting 25 Calibration 25 Cleaning the Jaws 28 Acrylic Care 29 Report Center Impact Printer 30 Installing the Cartridge Ribbon 30 Replacing the Paper Roll 31 Toggling Your Printer Online 32 Printer Self Test 33 Printer Configuration 33 Thickness Gauge Battery Replacement 35 Fuse Replacement 35 Troubleshooting 36 Service and Warranty 39 Exclusions and Limitations 40 Obtaining Warranty Service 40 Warranty Limitations 40 Exclusive Remedies 41 Index 43 Tell Us How We Are Doing 45 Varian Inc chapter1 Safety Practices and Hazards The VK 200 has been carefully designed so that when use
4. See recorded battery is weak or dead Thickness Gauge Battery Replacement on page 35 The thickness gauge is not powered up Check for the LCD display on the front of the gauge If not visible press ON OFF Tablets are being removed from the thickness gauge too quickly Do not remove tablets until the thickness value displays on the thickness gauge LCD and VK 200 LED Varian Inc Chapter 6 Service and Warranty The warranty is provided by Varian Inc or one of its authorized representatives Service and Warranty Information Varian products carry a one year warranty on parts and labor The Dissolution Systems Service Department or one of its representatives will at its option either repair or replace any mechanical and electrical components in your instrument which prove to be defective During the first year of warranty coverage there is no charge for the labor to repair your unit The Dissolution Systems Service Department or one of its representatives will determine the best site to repair the unit either onsite or returned to Varian Inc Any onsite warranty services are provided only at the initial installation point Installation and onsite warranty services are available only in Dissolution Systems service travel areas Varian Inc Page 40 VK 200 Tablet Hardness Tester Revision H 11 10 Service and Warranty Operator s Manual P N 70 9015 Exclusions and Limitatio
5. abrasive and fully compatible with PETG and acrylic before use If in doubt call the service department for advice before proceeding 3 Do not use ammonia window cleaning sprays kitchen scouring compounds or solvents such as acetone gasoline benzene alcohol carbon tetrachloride or lacquer thinner These can scratch the material s surface and or weaken it causing small surface cracks called crazing 4 Our recommendations include but are not limited to the following e Hot water lt 150 F e Vinegar 5 Glacial Acetic Acid e Ethyl alcohol maximum 10 e Isopropyl alcohol maximum 25 Varian Inc Page 30 VK 200 Tablet Hardness Tester Revision H 11 10 Maintenance and Troubleshooting Operator s Manual P N 70 9015 Report Center Impact Printer The following is helpful information for using your impact printer Installing the Cartridge Ribbon If the printer is used infrequently the print impression sometimes becomes weak because the ribbon dries out If the printed material is difficult to read and you suspect this is the cause of the problem advance to a new section of the ribbon by pressing the printer toggle switch to the Paper feed position If the printing is still faint replace the cartridge To install the cartridge Step 1 Toggle the printer off line by pressing the printer toggle switch to the OnLine Off Line position When the printer is off line the Ready LED does not illuminate Step
6. adapter from the electrical outlet Step 2 Press and hold the printer toggle switch in the Paper feed position Step 3 Plug the AC power adapter into the electrical outlet Step 4 Hold the printer toggle switch until printing begins The printer prints a list of the current configuration settings and performs a continuous print test Step 5 Press the printer toggle switch to the OnLine Off Line position to stop the printing operation Step 6 The printer is ready to resume normal operation Printer Configuration Note The printer configuration is set by the factory This procedure Lr should be performed only if the printer displays erroneous characters Contact the Dissolution Systems Service Department for assistance if necessary Step 1 Unplug the AC power adapter from the electrical outlet Step 2 Press and hold the printer toggle switch in the OnLine Off Line position while plugging the AC power adapter into the electrical outlet Hold the printer toggle switch in the OnLine Off Line position for six seconds after the AC power adapter is replaced then release the switch Varian Inc Page 34 VK 200 Tablet Hardness Tester Revision H 11 10 Maintenance and Troubleshooting Operator s Manual P N 70 9015 Step 3 The printer should print SETUP MENU and CONFIGURE NEXT OK If this message does not print repeat steps 1 and 2 Step 4 The printer toggle switch is used to complete th
7. feeding to the printer Step 12 Place the paper roll into the paper compartment Step 13 Replace the paper roll cover If the cover is difficult to remove or replace the left and right edges can be trimmed or shaved with a utility knife allowing the cover to slide easier Step 14 Toggle the printer online by pressing the printer toggle switch to the OnLine Off Line position The Ready LED illuminates Toggling Your Printer Online Complete these steps to toggle your printer online Step 1 Step 2 Toggle the printer online by pressing the printer toggle switch to the OnLine Off Line position Release the switch and it returns to the center position The Ready LED illuminates and a READY message prints if the PRINT READY command has not been turned off See Printer Configuration on page 33 for instructions on turning on and off the PRINT READY command When you first turn on the instrument it prints a READY message to assure you that the built in microprocessor is operating properly Varian Inc Revision H 11 10 VK 200 Tablet Hardness Tester Page 33 P N 70 9015 Operator s Manual Maintenance and Troubleshooting When you turn off the printer wait at least three seconds before turning it on again Printer Self Test You can test the print head and ribbon only after inserting paper Do not attempt to print without paper Follow these steps to perform a printer self test Step 1 Unplug the AC power
8. kg a calibration fixture must be bolted to the table prior to using the VK 200 Weights are suspended on the calibration weight hanger Be sure to keep your feet out from underneath the suspended weights To calibrate the unit perform the following steps Step 1 Ensure the table on which the VK 200 sits during the calibration is level Step 2 Turn on the VK 200 Wait five minutes for the electronics to stabilize Varian Inc Page 26 VK 200 Tablet Hardness Tester Revision H 11 10 Maintenance and Troubleshooting Operator s Manual P N 70 9015 Step 3 Place the unit on its left side on a flat surface Hold it securely to keep it from falling Step 4 If you have the optional calibration fixture secure the hardness tester to the fixture with the two locking screws by winding them through the fixture and into the bottom of the tester Step 5 Ensure the threaded end of the calibration weight hanger supplied in the accessory kit is straight If it is not straight the screw must be replaced Contact the Dissolution Systems service department Step 6 Thread the calibration weight hanger into the sensing jaw for approximately ten turns or until it stops Step 7 Ensure the weight hanger is tight and does not rotate See Figure 2 Attaching the Calibration Weight Hanger to the Sensing Jaw below Note 7 Prior to threading the calibration weight hanger into the sensing U gt jaw ensure the screw is straig
9. not apply to you Varian Inc Revision H 11 10 VK 200 Tablet Hardness Tester Page 41 P N 70 9015 Operator s Manual Service and Warranty Exclusive Remedies The remedies provided herein are the customer s sole and exclusive remedies In no event shall Varian Inc or its representatives be liable for any direct indirect special incidental or consequential damages whether based on contract tort or any other legal theory Some states or provinces do not allow the exclusion or limitation of incidental or consequential damages so the above limitation or exclusion may not apply to you Varian Inc Page 42 VK 200 Tablet Hardness Tester Revision H 11 10 Service and Warranty Operator s Manual P N 70 9015 This page was intentionally left blank except for this message Varian Inc Index b battery replacement thickness gauge 35 c calibration 25 cartridge ribbon 30 cleaning the jaws 28 connecting the report center printer 16 conventions 13 d diameter testing 20 e electrical connections 17 exclusions 40 exclusive remedies 41 f fuse replacement 35 h hardness testing 22 hazards 5 i initial power up 18 installation 15 installing the printer cartridge ribbon 30 introduction 11 j jaws cleaning 28 l limitations 40 m maintenance 25 measurement units 19 Varian Inc Index o obtaining warranty service 40 operation 19 optional r
10. to discuss your comments at 919 677 1108 VK 200 Tablet Hardness Tester Operator s Manual P N 70 9015 Revision H
11. 2 Four small grooves are embossed on the printer cover Gently push on these grooves to tilt the cover When the printer cover is tilted up you can lift it off completely Step 3 Push down on the right side of the ribbon cartridge marked PUSH and remove the old cartridge Step 4 Install the new cartridge If there is already paper in the printer hold the cartridge between your thumb and index finger slide it over the paper and into the printer compartment Ensure the paper is between the ribbon cartridge and the ink ribbon Ensure the ribbon cartridge is inserted firmly to prevent weak or irregular printing The cartridge must be properly seated and aligned for the best printing Step 5 Turn the cartridge knob marked by an arrow clockwise to stretch the ribbon taut Step 6 Replace the cover Varian Inc Revision H 11 10 VK 200 Tablet Hardness Tester Page 31 P N 70 9015 Operator s Manual Maintenance and Troubleshooting Step 7 Toggle the printer online by pressing the printer toggle switch to the OnLine Off Line position The Ready LED illuminates Step 8 Replace the paper if necessary If you get ribbon ink on the printer s plastic cover remove it immediately Once dried it is difficult to remove Replacing the Paper Roll Step 1 Step 2 Step 3 Step 4 Step 5 Step 6 Step 7 Step 8 Toggle the printer off line by pressing the printer toggle switch to the OnLine Off Line posit
12. The battery is also available from the Dissolution Systems Service Department To replace the battery Step 1 Insert a screwdriver into the slot on the battery holder Turn the holder one quarter turn counterclockwise as indicated by the arrows The battery holder pops out of the indicator body Step 2 Remove the spent battery from the holder and replace with a new one observing proper polarity Step 3 Insert the holder into the indicator and turn until it locks in place You are now ready to begin operation Fuse Replacement Warning The VK 200 contains electrical circuits devices and components operating at dangerous voltages Contact with these circuits devices and components can cause death serious injury or painful electric shock Panels or covers that are retained by fasteners which require the use of a tool for removal may be opened only by Varian trained Varian qualified or Varian authorized service engineers Follow these steps to replace the fuse Step 1 Before checking or attempting to replace a fuse unplug the VK 200 Varian Inc Page 36 VK 200 Tablet Hardness Tester Revision H 11 10 Maintenance and Troubleshooting Operator s Manual P N 70 9015 Step 2 Step 3 Step 4 Step 5 Step 6 Press the release tab on the fuse holder located in the power entry module with the blade of a small screwdriver or equivalent Upon release slide the holder out of the power entry
13. ar alongside warnings in this manual are as follows Electrical shock Pinch point Caution Refer to accompanying documents Read all warnings and cautions carefully and observe them at all times Varian Inc Page 8 VK 200 Tablet Hardness Tester Revision H 11 10 Safety Practices and Hazards Operator s Manual P N 70 9015 Caution A Caution message appears in the manual when failure to observe instructions could result in damage to equipment Varian supplied and or other associated equipment A Note appears in the manual to give advice or information Information symbols Switches main power on Switches main power off Indicates single phase alternating current Indicates the product complies with the requirements of one or C more European Union EU directives Indicates specific equipment meets consensus based standards SKA of safety to provide assurance required by OSHA that these af Si products are safe for use in the workplace for North America 5 Indicates that this product must not be disposed of as unsorted municipal waste see WEEE Directive on page 10 Varian Inc Revision H 11 10 VK 200 Tablet Hardness Tester Page 9 P N 70 9015 Operator s Manual Safety Practices and Hazards General CE Compliant Products The VK 200 has been designed to comply with the requirements of the Electro magnetic Compatibility EMC Directive and the Low Vol
14. cement on page 35 Hardness values are higher or lower than expected The unit is out of calibration Calibrate the unit See Calibration on page 25 The product tested is out of specification Check the manufacturing process of the tablet Hardness readings tend to be erratic or jaws do not size tablet properly There is debris buildup under the jaws Clean the jaws See Cleaning the Jaws on page 28 The strain beam is damaged or defective Contact the Dissolution Systems Service Department The jaw plates are not optimal for tablet shape Contact the Dissolution Systems Service Department for optional jaw plates The optional Report Center Printer does not function The printer is disabled Enable the printer See Enabling and Disabling the Report Center Printer on page 24 There is no power at the outlet Ensure the outlet has power going to it The printer is not plugged in Ensure printer is securely connected to an electrical outlet The printer is off line Toggle the printer toggle switch online See Toggling Your Printer Online on page 32 Varian Inc Page 38 Maintenance and Troubleshooting VK 200 Tablet Hardness Tester Operator s Manual Revision H 11 10 P N 70 9015 Problem Possible Cause Suggested Solution Thickness readings are not The thickness gauge Replace the battery
15. d properly you have an accurate fast flexible and safe instrument If the equipment is used in a manner not specified by the manufacturer the protection provided by the equipment may be impaired Operation of a VK 200 involves the use of solid dosage forms Unskilled improper or careless use of this instrument can create shock hazards fire hazards or other hazards which can cause death serious injury to personnel or severe damage to equipment and property Information on safety practices is provided with your instrument and operation manuals Before using your instrument or accessories you must thoroughly read these safety practices Observe all relevant safety practices at all times Varian Inc Page 6 VK 200 Tablet Hardness Tester Revision H 11 10 Safety Practices and Hazards Operator s Manual P N 70 9015 Electrical Hazards The VK 200 contains electrical circuits devices and components operating at dangerous voltages Contact with these circuits devices and components can cause death serious injury or painful electric shock Panels or covers that are retained by fasteners which require the use of a tool for removal may be opened only by Varian trained Varian qualified or Varian authorized service engineers Consult the manuals or product labels supplied with the VK 200 to determine which parts are operator accessible Application of the wrong supply voltage connection of the instrument to an incorrectly
16. e All Varian products that are subject to the WEEE directive shipped after August 13 2005 are compliant with the WEEE marking requirements Such products are marked with the crossed out wheelie bin WEEE symbol shown on page 8 in accordance with European Standard EN 50419 This symbol on the product or on its packaging indicates that this product must not be disposed of as unsorted municipal waste The separate collection and recycling of your waste equipment at the time of disposal will help to conserve natural resources and ensure that it is recycled in a manner that protects human health and the environment For more information on collection reuse and recycling systems please contact your local regional waste administration your local distributor or Varian Inc Varian Inc chapter2 Introduction The VK 200 Tablet Hardness Tester has been designed for the testing of tablets ina variety of shapes and sizes with the highest possible levels of precision and accuracy Up to 250 tablets may be tested per run The optional Report Center Printer gives you complete printouts of test results with both raw values and batch statistics The VK 200 is designed with the smallest possible footprint to conserve valuable bench space How Your VK 200 Works The VK 200 Tablet Hardness Tester uses an advanced strain gauge design for its hardness measurements The instrument is controlled by a built in microprocessor The sensing jaw is c
17. e configuration Pressing the left side of the printer toggle switch selects NEXT to advance to the next menu item Pressing the right side of the printer toggle switch selects OK to accept what is stated on this line of the menu item Each time the switch is pressed another part of the menu prints Allow the printer to finish printing before pressing the switch again See the table of commands below i Note The printout is easier to read if the printer cover is removed SETUP MENU CONFIGURE NEXT OK Press NEXT to avoid configuration CUSTOM NEXT OK Press OK to enter custom mode CUSTOM MENU PRINT CUSTOM SETUP NEXT OK Press NEXT AUTO SEQ NO NEXT OK Press OK ZERO NEXT OK Press OK POUND SIGN NEXT OK Press OK _ UNDERSCORE NEXT OK Press OK ONLINE OFFLINE YES NEXT OK Press OK EXT CH SET NO NEXT OK Press OK PRINT READY YES NEXT OK Press NEXT PRINT READY NO NEXT OK Press OK READY Your printer is now configured correctly Varian Inc Revision H 11 10 VK 200 Tablet Hardness Tester Page 35 P N 70 9015 Operator s Manual Maintenance and Troubleshooting Thickness Gauge Battery Replacement The Tablet Thickness Gauge is powered by a long life lithium battery similar to the type used in many popular watches and cameras These batteries are available from most retail photo suppliers and many pharmacies Eveready 357
18. ent tablets Step 5 Repeat steps 2 4 for all subsequent tablets Varian Inc Revision H 11 10 VK 200 Tablet Hardness Tester Page 23 P N 70 9015 Operator s Manual Operation Step 6 To reset the jaws to their fully open position and print a statistical summary of all parameters press the Initialize Print Calibrate toggle switch to the IN TIALIZE PRINT position Note The Initialize Print Calibrate toggle switch is a spring loaded rocker switch The rocker returns to the center position after you release your finger Toggle it to either position as required by L pressing it until you hear a click then release Do not press the Initialize Print Calibrate toggle switch to the INITIALIZE PRINT position until the last tablet in the batch has been tested The memory buffer clears after the report prints and all data from the test batch is lost Optional Report Center Printer Press the Initialize Print Calibrate toggle switch to the INITIALIZE PRINT position in order to print a complete statistical summary of all tablet results The data buffer clears and the jaws re initialize to their fully open position The VK 200 Tablet Hardness Tester is now ready to test the next group of tablets Note The Initialize Print Calibrate toggle switch is a spring loaded rocker switch The rocker returns to the center position after you release your finger Toggle it to either
19. eport center printer 23 optional thickness gauge 20 p power up 18 printer configuration 33 printer self test 33 printer toggling online 32 r reader comment form 45 report center printer 23 S safety practices 5 self test printer 33 service 39 setup 15 19 t tablet testing 20 thickness testing 20 troubleshooting 36 typographical conventions 13 u unpacking 15 v vk 200 general information 11 vk 200 photograph 12 w warranty 39 warranty limitations 40 Varian Inc ap ms VARIAN Tell Us How We Are Doing We listen to our customers We work hard to make our technical documentation user friendly and to make the information in our manuals easy to retrieve and use We d like you to tell us the kinds of additional information you d find helpful in our documentation Your feedback will be carefully considered when we prepare future editions of this manual This manual should contain the following additional information The most useful thing about this book is This manual would be more helpful if My general impressions of this book are May we contact you regarding your comments YES NO If yes please write your name address and telephone number here Please return this form via mail to Technical Writing Dissolution Systems Varian Inc 13000 Weston Parkway Cary North Carolina 27513 2250 USA Optionally you can return this form via fax at 1 919 677 1550 Always feel free to telephone us
20. et Hardness Tester Revision H 11 10 Operation Operator s Manual P N 70 9015 Testing Tablets Thickness and Diameter Testing with Optional Thickness Gauge If your VK 200 is equipped with the optional digital thickness gauge you can measure and record the thickness of each tablet before its hardness value is determined If your VK 200 has been programmed with the optional diameter measurement capabilities you can also measure and record the diameter of each tablet before its hardness value is determined Step 1 Ensure the thickness gauge is turned on When on the LCD illuminates If not press ON OFF on the front of the gauge Select measurement in inches or millimeters by pressing in mm Step 2 Press down the lever on top of the gauge The plunger on the bottom rises Place your tablet under the plunger and gently release the lever The plunger is now in contact with the tablet Note E It is not necessary to zero the gauge before placing the tablet on the tester since the tester calculates the difference between the starting and ending measurement Step 3 The thickness value in inches or millimeters displays on the thickness gauge LCD and VK 200 LED If your unit is equipped with a Report Center Printer ensure the printer is turned on and the Ready LED is illuminated If not see Toggling Your Printer Online on page 32 The thickness value prints as it is determined Press down the lever on top o
21. f the thickness gauge again to lift the plunger Step 4 Remove the tablet and release the lever Varian Inc Revision H 11 10 P N 70 9015 VK 200 Tablet Hardness Tester Page 21 Operator s Manual Operation Step 5 Step 6 Step 7 Step 8 If your VK 200 is equipped with the optional diameter measuring capabilities repeat steps 2 4 placing the tablet on its side under the gauge to determine its diameter The diameter value prints as it is determined Determine the hardness value of the tablet after completing the thickness and diameter tests by performing steps 2 4 under Hardness Testing on page 22 Repeat steps 2 6 for all remaining tablets If it is not necessary to check thickness and diameter values for every tablet and your unit has a Report Center Printer installed the thickness and diameter values for skipped tablets are omitted on the printout To reset the jaws to their fully open position and print a statistical summary of all parameters press the Initialize Print Calibrate toggle switch to the IN ITIALIZE PRINT position Note The Initialize Print Calibrate toggle switch is a spring loaded rocker switch The rocker returns to the center position after you release your finger Toggle it to either position as required by E pressing it until you hear a click then release Do not press the Initialize Print Calibrate toggle switch to the INITIALIZE PRINT positio
22. ht If it is not straight the screw must be replaced Contact the Dissolution Systems service department FIGURE 2 Attaching the Calibration Weight Hanger to the Sensing Jaw Sensing Jaw 1p Lig Calibration Weight Weight Hanger U Step 8 Ensure the weight hanger is hanging free and is stable Varian Inc Revision H 11 10 VK 200 Tablet Hardness Tester Page 27 P N 70 9015 Operator s Manual Maintenance and Troubleshooting Step 9 Place the unit in calibration mode by toggling the Initialize Print Calibrate toggle switch to the CALIBRATE position After a few seconds the VK 200 displays 0 00 Note that the last digit on the front panel may flicker slightly This is normal and is due to the high sensitivity of the instrument Note The Initialize Print Calibrate toggle switch is a spring loaded I gt rocker switch The rocker returns to the center position after you release your finger Toggle it to either position as required by pressing it until you hear a click then release Step 10 Selecta 10 kg calibration weight and carefully place it on the weight hanger The force displayed should match the weight used Note UE Use only metric weights with a tolerance of NIST class 6 or better for calibration Step 11 If the weight applied does not match the force indicated adjust the calibration trim pot on the underside of the unit Using the trim po
23. ion When the printer is off line the Ready LED does not illuminate Grasp the paper roll cover firmly by the grooves on the side and the front edge Pull outward to remove the cover Press the printer toggle switch to Paper feed to advance the paper approximately one inch beyond the paper cutter Using scissors cut the paper feeding to the printer and remove the paper roll Pull the remaining paper through the printer mechanism Pull the paper from the front paper cutter side Pulling the paper out of the back of the printer will damage the print mechanism Unroll several inches of paper on the new roll If it is jagged cut a straight edge on the paper roll to facilitate the entry of the paper into the printer Slide the paper through the slot connecting the paper compartment and the printer compartment You can slide it in approximately 1 4 inch before it stops Varian Inc Page 32 VK 200 Tablet Hardness Tester Revision H 11 10 Maintenance and Troubleshooting Operator s Manual P N 70 9015 Step 9 While holding the paper in place press the printer toggle switch to the Paper feed position and hold until approximately one inch of paper has emerged from the top of the printer Caution Ensure the roll of paper feeds squarely If it does not the paper can jam and possibly damage the printer mechanism Step 10 Release the printer toggle switch Step 11 Turn the paper roll to take up any slack in the paper
24. ipping carton Hold the VK 200 firmly to prevent it from dropping Place the unit on a clear dry level section of the bench top or table At least four inches 10 cm of open space should be allowed at the rear and on both sides of the instrument Warning The electrical connection at the back of the VK 200 Tablet Hardness Tester is the primary disconnect for the instrument The tester should be positioned to allow accessibility to the power cord for easy disconnection Varian Inc Page 16 VK 200 Tablet Hardness Tester Revision H 11 10 Installation and Setup Operator s Manual P N 70 9015 Connecting the Report Center Printer A Warning Before plugging the Report Center Printer into any power outlet ensure the printer is properly configured for the voltage provided Check the input voltage rating on the AC power adapter to confirm the voltage requirement The electrical connection at the back of the printer is the primary disconnect for the device If you have the optional Report Center Printer complete the following steps to connect it to your VK 200 Step 1 Step 2 Step 3 Step 4 Step 5 Remove the printer from the shipping carton Place it on a clean dry area of your benchtop to the right of your VK 200 Connect the 25 pin printer cable between the printer rear panel and the port on the VK 200 right side panel Plug the connector of the AC power adapter into the jac
25. k on the printer rear panel Plug the other end into the electrical outlet Toggle the printer online by pressing the printer toggle switch to the OnLine Off Line position The Ready LED illuminates If it does not ensure the printer is securely plugged in and there is power at the outlet If the device still fails to respond see Troubleshooting on page 36 or contact the Dissolution Systems Service Department Varian Inc Revision H 11 10 VK 200 Tablet Hardness Tester Page 17 P N 70 9015 Operator s Manual Installation and Setup Electrical Connections Warning Before plugging the VK 200 into any power outlet ensure the instrument is properly configured for the voltage provided Check the serial number tag on the rear panel of the instrument to confirm the voltage requirement The electrical connection at the back of the VK 200 is the primary disconnect for the instrument Step 1 Ensure the VK 200 is turned off Step 2 Connect the power cord between the receptacle on the rear panel of the VK 200 and an electrical outlet of the appropriate voltage Installing Accessories The VK 200 Tablet Hardness Tester accessory kit includes the calibration weight hanger tablet fragment safety shield adjustment tool particle catch tray and fragment brush See Calibration on page 25 for instructions on the use of the calibration weight hanger See Cleaning the Jaws on page 28 for instructions on rem
26. last calibration weight has been read press the Initialize Print Calibrate toggle switch to the CALIBRATE position to exit calibration mode Step 20 Remove the weight from the hanger and unscrew the hanger from the sensing jaw Step 21 Unfasten the calibration fixture if applicable and carefully place the unit in the upright position on the benchtop Cleaning the Jaws Other than calibration the VK 200 Tablet Hardness Tester requires little routine maintenance However the jaws should be cleaned regularly to remove powder and tablet fragments which could affect accuracy Varian Inc Revision H 11 10 VK 200 Tablet Hardness Tester Page 29 P N 70 9015 Operator s Manual Maintenance and Troubleshooting Step 1 Remove the thumbscrews and the washers which secure each jaw Do not lose the washers Step 2 Lift both jaws off of the instrument Step 3 Carefully clean the jaw plate with a suitable solution Step 4 Use the brush supplied in the accessory kit to clean underneath the jaws Step 5 Ensure the jaw plate is dry Replace and secure each jaw with the washers and thumbscrews Acrylic Care 1 Be sure to rinse acrylic item s thoroughly with deionized water immediately after each use and dry thoroughly with a soft towel or cloth 2 Do not clean with abrasive cleansers or cloths Use deionized water whenever possible If you must use a cleanser or solvent be sure that it is as mild as possible non
27. module Remove the old fuse and insert the new fuse Slide the holder back into the power entry module and push until it locks into place Replace the power cord A Warning Never replace a fuse with one of a higher amperage rating Doing so may compromise the safety margin and could result in damage to the instrument or personal injury Troubleshooting The Dissolution Systems Service Department can assist you if you experience problems or have questions concerning your VK 200 Many problems can be traced to simple sources and are easily solved Following is a troubleshooting guide which may help you The Dissolution Systems Service Department can be reached at 800 229 1108 inside the US or 919 677 1108 outside the US Optionally you can send a fax to 919 677 1138 You can also e mail the Dissolution Systems Service Department at dissolution service varianinc com Varian Inc Revision H 11 10 P N 70 9015 VK 200 Tablet Hardness Tester Operator s Manual Page 37 Maintenance and Troubleshooting Problem Possible Cause Suggested Solution The LED on the front panel display screen does not illuminate and the jaws do not move when TEST is pressed There is no power at the outlet Ensure the outlet has power going to it The unit is not plugged in Ensure the unit is securely connected to an electrical outlet The fuse is blown open Replace the fuse See Fuse Repla
28. n until the last tablet in the batch has been tested The memory buffer clears after the report prints and all data from the test batch is lost Varian Inc Page 22 VK 200 Tablet Hardness Tester Revision H 11 10 Operation Operator s Manual P N 70 9015 Hardness Testing Warning A Eye protection is required when operating the VK 200 Wear approved safety glasses Warning There is a pinch hazard between the sensing jaw and the power jaw Exercise caution Step 1 Step 2 Step 3 Step 4 If your unit is equipped with a Report Center Printer ensure the printer is turned on and the Ready LED is illuminated If not see Toggling Your Printer Online on page 32 Place the tablet against the sensing jaw Center the tablet against the face plate of the sensing jaw Place the tablet fragment safety shield over the sensing jaw and power jaw to reduce exposure to projected fragments of the tablet as it is being crushed Be sure to align the groove over the sensing jaw Press TEST The power jaw begins to close At the moment the tablet fractures the moving jaw stops and retracts slightly and the hardness value displays on the LED If your tester is equipped with a Report Center Printer the hardness value prints as it is determined Note J The jaws size the tablet automatically After the first tablet has been tested the jaws open just enough to easily insert subsequ
29. ns Excluded from this warranty are expendable or consumable items such as but not limited to paddles baskets vessels and acrylic water baths Also excluded are defects from improper or inadequate maintenance by the customer user induced chemical action or contamination unauthorized modification or misuse and improper site preparation and maintenance Operation of software is not warranted to be uninterrupted or error free Obtaining Warranty Service To obtain warranty service in the United States contact the Dissolution Systems Service Department at 800 229 1108 to obtain authorization to return units for repair At the option of the customer onsite warranty service is available but travel charges may be incurred The customer should prepay all shipping charges for products returned to the Dissolution Systems Service Department unless otherwise authorized and Varian Inc will pay all charges for return to the customer Warranty Limitations Varian Inc makes no other warranty either express or implied with respect to this product Specifically disclaimed are any implied warranties of merchantability and fitness for a particular use In no event will Varian Inc be liable for any indirect incidental or consequential damages arising from the use of this product This warranty gives you specific legal rights which may vary from state to state or province to province so you may have other rights and some of these exclusions may
30. onnected to the strain gauge As the moving jaw presses the tablet against it the force is continuously measured and recorded until the initial fracture is detected and confirmed Results for each tablet are shown on the front panel display A front panel toggle switch allows you to view results in either kiloponds or Strong Cobb units Optionally your VK 200 can be equipped to read in Newtons In testers equipped with the optional Report Center Printer raw results are saved in buffer memory When the Initialize Print Calibrate toggle switch is pressed to the IN TIALIZE PRINT position Varian Inc Page 12 VK 200 Tablet Hardness Tester Revision H 11 10 Introduction Operator s Manual P N 70 9015 statistics for the run are calculated and a full report is printed After printing the data buffer is cleared and the unit is ready to begin a new series of measurements Warning The VK 200 contains electrical circuits devices and components operating at dangerous voltages Contact with these circuits devices and components can cause death serious injury or painful electric shock FIGURE 1 VK 200 Tablet Hardness Tester Caution Panels or covers that are retained by fasteners which require the use of a tool for removal may be opened only by Varian trained Varian qualified or Varian authorized service engineers Varian Inc Page 13 Revision H 11 10 VK 200 Tablet Hardness Tester Introduc
31. oving the jaw plate Complete the following steps to install the particle catch tray Step 1 Attach the particle catch tray to the back of the VK 200 by aligning the three screws on the tray to the larger part of the slots in the VK 200 back panel Step 2 Slide the tray down Step 3 Secure the screws in the smaller area of the slots Varian Inc Page 18 VK 200 Tablet Hardness Tester Revision H 11 10 Installation and Setup Operator s Manual P N 70 9015 Initial Power Up The power switch is located on the power entry module on the VK 200 rear panel Turn on the instrument After the unit is turned on the measuring jaws move to their maximum open position and the front panel displays a series of dashes You are now ready to begin operation Caution Press TEST only when a tablet is in the proper position or damage may occur to the unit Varian Inc chapter4 Operation Selection of Measurement Units The VK 200 Tablet Hardness Tester can display hardness values in either kiloponds or Strong Cobb units To select the desired unit place the front panel mode switch in either the kp for kiloponds or SC for Strong Cobb units position If you have the optional display of hardness values in Newtons place the front panel mode switch in the N position Note O Selection of the measurement unit must be done prior to testing a group of tablets Varian Inc Page 20 VK 200 Tabl
32. position as required by pressing it until you hear a click then release Do not press the Initialize Print Calibrate toggle switch to the INITIALIZE PRINT position until the last tablet in the batch has been tested The memory buffer clears after the report prints and all data from the test batch is lost Varian Inc Page 24 VK 200 Tablet Hardness Tester Revision H 11 10 Operation Operator s Manual P N 70 9015 Enabling and Disabling the Report Center Printer To toggle between enabling and disabling the printer press and hold the Initialize Print Calibrate toggle switch in the NITIALIZE PRINT position and then press TEST Release both buttons simultaneously Note SS The Initialize Print Calibrate toggle switch is a spring loaded cS rocker switch The rocker returns to the center position after you release your finger Toggle it to either position as required by pressing it until you hear a click then release Varian Inc chapters Maintenance and Troubleshooting Calibration The strain gauge mechanism should be calibrated after initial installation and periodically thereafter to assure that the VK 200 operates with the accuracy and precision it was designed to deliver The interval between calibrations depends largely on the instrument workload and the criticality of the test We recommend a calibration be performed every six months Warning If using a weight greater than 20
33. t tool supplied in the accessory kit turn the calibration trim pot located on the bottom left corner of the VK 200 until the value displayed matches exactly the weight applied Step 12 After the trim pot has been adjusted remove the weight and wait for the display to return to 0 00 Step 13 Press the Initialize Print Calibrate toggle switch to the INITIALIZE PRINT position and release to reset the VK 200 Step 14 Press the Initialize Print Calibrate toggle switch to the CALIBRATE position and release Step 15 Place the 10 kg weight back on the hanger and check the reading Varian Inc Page 28 VK 200 Tablet Hardness Tester Revision H 11 10 Maintenance and Troubleshooting Operator s Manual P N 70 9015 Step 16 Repeat steps 7 15 until the 10 kg weight reads 10 00 and the LED display returns to exactly 0 00 after removing the calibration weight Note kK If the weight does not read within designated tolerances after several attempts contact the Dissolution Systems Service Department Step 17 If necessary verify the operating range of the VK 200 with additional weights Note Do not reset the machine to operational mode if you are continuing to read additional weights E gt Step 18 Place the next weight on the weight hanger The displayed value should be within 0 1 kg or 1 0 of the actual weight applied whichever is greater Step 19 After the
34. tage Directive LVD of the EU Varian Inc has confirmed that each product complies with the relevant directives by testing a prototype against the prescribed European Norm EN standards Proof that a product complies with the directives is indicated by e the CE marking appearing on the rear of the product e the documentation package that accompanies the product containing a copy of the declaration of conformity This declaration is the legal declaration by Varian Inc that the product complies with the directives and also shows the EN standards to which the product was tested to demonstrate compliance The declaration of conformity is signed by the representative of the manufacturing plant cTUVus U S and Canadian Product Approvals The VK 200 has been designed to comply with North American safety requirements This product has been tested and certified for the North American market by TUV Rheinland of North America Inc The TUVus mark signifies that this product has been tested to U S standards and certified for the U S market The cTUV mark signifies that this product has been tested to Canadian standards and certified for the Canadian market When the two marks are coupled the cTUVus mark signifies that this product has been tested to standards and certified for both markets Varian Inc Page 10 VK 200 Tablet Hardness Tester Revision H 11 10 Safety Practices and Hazards Operator s Manual P N 70 9015 WEEE Directiv
35. tion P N 70 9015 Operator s Manual Conventions Used in this Manual e Items you are asked to press are in bold For example press TEST on the VK 200 front panel e Toggle switches you are asked to press appear like this Press the Initialize Print Calibrate toggle switch to the IN TIALIZE PRINT position Note Remember to return the warranty card supplied with this manual Completing and returning the card ensures your right to qi protection under the terms and conditions of your warranty It also enables us to better assist you in the event of any problems Additionally it guarantees you will be informed of any issues that arise concerning your equipment such as upgrades retrofits or regulatory changes Varian Inc Page 14 VK 200 Tablet Hardness Tester Revision H 11 10 Introduction Operator s Manual P N 70 9015 This page was intentionally left blank except for this message Varian Inc Chapter 3 Installation and Setup Unpacking Your VK 200 Step 1 Step 2 Step 3 Open each carton and check the contents for damage which may have occurred during shipping Shipping damage rarely occurs but if it does contact both the carrier who delivered the instruments and the Dissolution Systems Service Department Though claims for damage should be filed with the carrier we can help you file a claim Carefully remove the VK 200 and accessories from the sh
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