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Modern Water OVA 7000, Routine Service Manual

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Modern Water OVA 7000 Routine Service Manual Download Page 2

Copyright © 2015 Modern Water Monitoring Ltd. All rights reserved. 
Modern Water Monitoring Ltd. 
15 – 17 Cambridge Science Park 
CAMBRIDGE CB4 0FQ 
UNITED KINGDOM 

Email: [email protected] 
Web address: www.modernwater.com 

Telephone: +44 (0) 1483 696000  

 
P/N. 210-071-1.5 

Summary of Contents for OVA 7000

Page 1: ... OVA7000 ON LINE HEAVY METALS ANALYSER ROUTINE SERVICE MANUAL V1 5 ...

Page 2: ... Monitoring Ltd All rights reserved Modern Water Monitoring Ltd 15 17 Cambridge Science Park CAMBRIDGE CB4 0FQ UNITED KINGDOM Email info modernwater co uk Web address www modernwater com Telephone 44 0 1483 696000 P N 210 071 1 5 ...

Page 3: ...tiating OVA7000 Operation 9 2 4 Stopping OVA7000 Operation 9 2 5 Powering Down the OVA7000 10 3 Weekly Maintenance 11 3 1 Maintenance Popup 11 3 2 Reagent Replacement and Monitoring 12 3 2 1 Replacing Reagent during a Run 12 3 3 Pump Calibration 12 3 3 1 Pump Calibration Procedure 13 3 4 Working Electrode Maintenance 14 3 4 1 Polishing procedure 14 3 5 Filter Maintenance 14 3 5 1 Filter Pump Tubin...

Page 4: ...NC Viewer Screen 7 Figure 3 OVA7000 Main Screen 8 Figure 4 OVA7000 Run Screen 8 Figure 5 Maintenance popup menu 11 Figure 6 Maintenance category submenu 11 Figure 7 OVA7000 Calibrate Screen 13 Figure 8 Filter pump cover removal 15 Figure 9 Filter pump tubing replacement 15 Figure 10 Filter assembly 15 Figure 11 Service Checklist Sheet 17 ...

Page 5: ...es highly detailed information on instrument operation and configuration 1 1 OVA7000 The OVA7000 On Line Trace Metals Analyser has been designed for automated monitoring of trace metals such as Cd Pb Cu Hg As in aqueous solutions using the electrochemical techniques of Anodic and Cathodic Stripping Voltammetry In some instances the monitored sample may require filtration acidification or UV digest...

Page 6: ...tton with grey window boarders and taskbar Information specific to the OVA7000dual in this manual is printed in blue text 1 3 OVA7000 Set Top Box The OVA7000 Set Top Box is a purpose built touchscreen monitor that sits atop the OVA This allows users to conveniently interact with the OVA application and OVA equipment together The Set Top Box can be used without a physical keyboard by clicking the o...

Page 7: ... and Communicating with the OVA7000 Caution Always ensure that both inner and outer reference chambers are full and there is liquid covering the working electrode inside the cell Failure to do this may cause an alarm condition or damage to the electrode To power up and communicate with the OVA7000 1 Switch on the external supply power to OVA7000 and press the power button The power button will the...

Page 8: ...are will show the Main screen as shown below Figure 3 OVA7000 Main Screen 4 Click the Log In button located in the bottom right section of the OVA7000 Main Screen and enter your username and password 5 Click the Run button located in the top right section of the OVA7000 Main Screen to enter the Run screen Figure 4 OVA7000 Run Screen The OVA7000 is now ready for use but is not yet operational 6 To ...

Page 9: ...n the green Run Schedule button in the middle of the Run Screen 2 If the schedule has a Plate script configured then the button will split into a blue Plate First button and a green Run Schedule button Select either to begin automatic operation The OVA7000 will now operate automatically in accordance with the method scripts activated by the Scheduling feature of the OVA7000 software These are desc...

Page 10: ...dows from the Start menu in the bottom left hand corner of the screen Select Shut Down as with any other computer After a minute the power to the OVA7000 can be turn off at the supply point if desired Alternatively the user can restart Windows from the Start menu in the bottom left hand corner of the screen Select Restart as with any other computer Power is maintained to the OVA7000 throughout a r...

Page 11: ... and record 3 1 Maintenance Popup The floating Maintenance popup menu appears on entry to the Run page if one of its Pumps Electrodes or Tubing categories is red flagged for maintenance If the user clicks anywhere outside it then it will disappear for an hour before returning Figure 5 Maintenance popup menu Figure 6 Maintenance category submenu Each Pump automatically has a date recorded that indi...

Page 12: ...ay you will not inadvertently admit air to the reagent tubes 3 2 1 Replacing Reagent during a Run Replacing reagent during OVA7000 operation Run 1 When the corresponding pump is off carefully remove the flexible tubing from the reagent container to be changed and place on a clean surface 2 Refill the container with fresh reagent 3 Re insert the flexible tubing into the container Ensure the tubing ...

Page 13: ...rt the end of the tube into the 10 mL measuring cylinder Use either of the following methods to pump a volume of liquid into the measuring cylinder 3 Start the relevant pump turning by clicking the pump icon When the volume in the measuring cylinder reaches about 7 or 8 mL stop the pump by clicking on the pump icon again or pressing the Esc key Alternatively enter the number 8 next to the pump s A...

Page 14: ... sensitivity of the electrode 9 Replace the electrode in the cell but do not connect alligator clip Add a couple of mL of rinse or electrolyte solution to the cell 10 Restore the OVA7000 to operational mode as described in section 2 3 Initiating OVA7000 Operation on page 9 Reconnect the working electrode alligator clip before commencing operation 3 5 Filter Maintenance Filter maintenance may be di...

Page 15: ...ng replacement 3 5 2 Filter maintenance procedure Filter maintenance procedure 1 Unscrew the bottom of the filter assembly as shown in Figure 10 Warning The filter assembly will contain a considerable amount of untreated sample If this is a corrosive toxic or otherwise hazardous solution appropriate safety precautions must be taken before opening the filter assembly Figure 10 Filter assembly 2 Rem...

Page 16: ...OVA7000 Routine Service Manual V1 5 16 This checklist sheet over page should be photocopied and kept as a record of OVA7000 maintenance history 4 Checklist Sheet ...

Page 17: ...te pumps Polish Working Electrode Inspect Reference Electrode Check Reference Electrolyte Check Stirrer operation Check Sample Stream Inspect filter operation Change filter pump tubing Date Check Reagent levels Calibrate pumps Polish Working Electrode Inspect Reference Electrode Check Reference Electrolyte Check Stirrer operation Check Sample Stream Inspect filter operation Change filter pump tubi...

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