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VAPODEST 50
INSTRUCTION MANUAL
Please read this instruction manual carefully and completely to familiarise yourself with safe and
effective usage procedures.
Observe all safety instructions for the Vapodest 50 using the following safety symbols.
Vap 50
Order-NR.: 7650, 7658
e 5050/97 - Version 5.0
09.05.2003
1
C. Gerhardt GmbH & Co. KG
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Table of Contents
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Summary of Contents for Gerhardt VAPODEST 50
- Page 1 INSTRUCTION MANUAL Please read this instruction manual carefully and completely to familiarise yourself with safe and effective usage procedures. Observe all safety instructions for the Vapodest 50 using the following safety symbols. Vap 50 Order-NR.: 7650, 7658 e 5050/97 - Version 5.0 09.05.2003...
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Page 3: Table Of Contents
7.2.3. Titration Adjustment ........................19 7.2.4. Chemical reservoirs ........................20 7.3. Data communication ........................20 7.4. Service ............................20 8. Calibration......................21 8.1. Calibration performance ....................... 21 9. Programming ....................... 23 9.1. Programming performance ......................23 C. Gerhardt GmbH & Co. KG... - Page 4 15. Maintenance....................... 46 15.1. Spare parts and accessories ....................... 46 15.2. Service and cleaning ........................48 15.3. Cleaning program ........................48 15.4. Trouble shooting ......................... 48 Other ......................... 49 Calculation of the results ........................49 C. Gerhardt GmbH & Co. KG...
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Page 5: Precautions
PRECAUTIONS Precautions Operational usage With the Vapodest 50 you have purchased a highly automated distillation system for the distillation of Kjeldahl digestions and associated distillations. Programmable addition of H O, NaOH, H titration acid as well as the removal of the sample remains after distillation by suction are features of this new system. -
Page 6: Technical Description
Vapodest 50 is designed and fabricated following the high quality guidelines of DIN EN ISO 9001. On the basis of the C. Gerhardt conditions of warranty our products are guaranteed for 1 year as long as the equipment is used according to the instructions in this manual. Please note that the natural wear- and -tear is excluded from warranty. -
Page 7: Delivery
(mail, rail, road) immediately and obtain an expert’s report! The exact contents of the delivery can be checked by the following list. 2.2. Package list 1 x Distillation system VAPODEST 50, ready to use 1 x Printer (with instruction manual) 1 x Printer cable 1 x Electrode with screw plug connection 1 x Buffer solution pH 4.00, 250 ml... -
Page 8: Description Of The Equipment
DESCRIPTION OF THE EQUIPMENT Description of the equipment 3.1. Front view C o n t r a s t V a p o d e s t 24 / 25 Fig. 3.1: Vapodest 50 - Front view C. Gerhardt GmbH & Co. KG... -
Page 9: Rear View
P u m p f o r s u c t i o n s a m p l e P u m p f o r N a O H Fig. 3.2: Vapodest 50 - Rear view C. Gerhardt GmbH & Co. KG... -
Page 10: Structural Components And Parts For Front- And Rear View
15 Key pad, chemical resistant See chapter 5 "Programming of the System" 16 Mains switch, green, illuminated Turns the equipment on or off 17 Tube for ventilation valve Connection tube to the ventilation valve C. Gerhardt GmbH & Co. KG... - Page 11 Condensate which might drip is collected in the drip tray. Make sure to clean the tray regularly. ** Protection door (not illustrated) Whenever you run the distillation system make sure you shut the protection door! C. Gerhardt GmbH & Co. KG...
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Page 12: Rear View
Connection pipe for PVC-tubing 8/12, connection to water outlet 21 Peristaltic pump for sample suction Connection pipe for Verprene-tubing 8/12, connection to store tank "Sample waste" 22 Diaphragm pump for NaOH Connection pipe for PVC-tubing 8/12, connection to storage tank "NaOH" C. Gerhardt GmbH & Co. KG... -
Page 13: Assembly And Installation
There should be sufficient space for the set of tanks below the work bench. 4.2. General information The VAPODEST 50 distillation system comes fully pre-assembled. Please unpack the equipment with care ! 1. Place the equipment on the work bench. Ideally, the equipment should be set up under con- stant light conditions. -
Page 14: Printer Connector
2400 Bd - Parity: If there are any problems with your balance please contact the manufacturer or C. Gerhardt. 4.7. Connection of store tanks 1. Set up store tanks for distilled water, sodium hydroxide solution, boric acid solution, and samp- le waste under the work bench. -
Page 15: Starting Operation
Test program in chapter 7 "Special Functions". If the unit is used for the first time, it is neccessary to clean the titration dosing pump. To do that, please see chap 7.1 "Special finctions" - "Dosing pump". C. Gerhardt GmbH & Co. KG... -
Page 16: Control Panel
CONTROL PANEL 6. Control panel The VAPODEST 50 can be programmed and controlled through the "Touch Sensitive Screen" of the control panel. Please note, that the contrast adjustment of the display depends on the light conditi- ons in the laboratory. The unit should be placed under constant lightning conditions and the display should not be exposed to direct sunlight as this can reduce the contrast of the display so making it unreadable. -
Page 17: Description Of The Keys And Functions
Control the cursor movements within field Option wanted can be marked or demarked Input keys for entering numerical values Delete key: erases value at current cursor positi- Point / Comma Key Activates the character input and symbols C. Gerhardt GmbH & Co. KG... - Page 18 To leave a blank press "right" key. Repeat for the next character input or sym- bol. Either/Or function: = indicates activation of the function = indicates deactivation of the function Further option: = activated = deactivated C. Gerhardt GmbH & Co. KG...
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Page 19: Special Functions
2. Select language required and press "Enter". After that the system asks for a restart. If the ap- paratus is turned off and on again the required language is set. All data entered remains stored. C. Gerhardt GmbH & Co. KG... -
Page 20: Time/Date
2. Confirm input using the key 'Enter', then, the next lower pH difference is shown on the display. 3. After confirming all further steps with 'Enter' you can print the data of the table. Upon completi- on of the print out, press 'Enter' to terminate the programming. C. Gerhardt GmbH & Co. KG... -
Page 21: Chemical Reservoirs
Please connect the interface LPT 1 with the parallel interface at the external PC before transferring the data. For more details see data transfer disk. 7.4. Service Sytem-check for authorised service. This special function is for internal use and is not available for the user. C. Gerhardt GmbH & Co. KG... -
Page 22: Calibration
Choose the "Calibration" key. Select buffer solutions. The electrode, rinsed with distilled water and dried (dabbed, not rubbed!) is dipped into buffer soluti- on pH 7. Start the measurement by pressing the "Enter" key. C. Gerhardt GmbH & Co. KG... - Page 23 After the calibration is finished the results can be accepted and printed. There is the possibility to repeat the calibration without the values being stored. Press "Enter" to finish the calibration. C. Gerhardt GmbH & Co. KG...
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Page 24: Programming
The addition of NaOH depends on the amount of the free (uncombined) sulphuric acid at the end the digestion. Example: Enter 110 ml = ca. 11 s Range 0 - 99 s C. Gerhardt GmbH & Co. KG... - Page 25 The range of the delta pH is between 1 and 13. specific amount of distillate is required within a specific time. The steam power can then be ad- C. Gerhardt GmbH & Co. KG...
- Page 26 "automatic endpoint" has to be selected. The pH value is measured at the beginning of each analysis and adopted as the endpoint. Small variations of the pH value in the receiver are thus compensated for. C. Gerhardt GmbH & Co. KG...
- Page 27 Select the criteria required for the calculation. Any combination is possible. combination is possible. Enter Enter If the calculation selected is %protein, the prote- in factor has to be entered. Example: 6,25 Range 0.01 - 9.99 Enter C. Gerhardt GmbH & Co. KG...
- Page 28 The program just entered can be printed for checks and documentation. By pressing the key "Print out" the data is stored and a print out is run. Press "Enter" once the data is printed to fi- nish the programming. Enter C. Gerhardt GmbH & Co. KG...
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Page 29: Sample Input
Range 1 - 20 Enter Enter the number of samples and blank samples for the program selected. The amount of samples cannot exceed the amount of determinations. Range 1 - 20 Enter C. Gerhardt GmbH & Co. KG... - Page 30 If the blank samples are run for test purposes only and have no influence on the calculation, then select "Display Blank Value". If the blank samples are needed for the calculation, confirm by "Store Blank Value". Enter Enter C. Gerhardt GmbH & Co. KG...
- Page 31 Key „X“ = delete current position Key „S“ = all following values entered will be put "Manual". one position up, the present value can be over- written. Enter C. Gerhardt GmbH & Co. KG...
- Page 32 It can be deleted with the "Del" key. Or you mark the next charac- ters that are to be changed with the cursor. The sample marking can be left any time by pressing the "Enter" key. C. Gerhardt GmbH & Co. KG...
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Page 33: Analysis
"Sample Input" and can be worked on one after the other. Single determination means that the weight or volume is entered before each analysis. An average value of results or blind values cannot be calculated in that case. C. Gerhardt GmbH & Co. KG... - Page 34 This value can be overwritten. Table: 0 = analysis without titration table 1 - 3 = analysis with titration table 1, 2 or 3 (see chapter 7.2.3. Titration adjustment) Enter C. Gerhardt GmbH & Co. KG...
- Page 35 The display shows which part of the program is running. By pressing "Stop" the analysis can be aborted at any time. The following function can be selected during analysis: - Manual addition of NaOH C. Gerhardt GmbH & Co. KG...
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Page 36: Serial Determination
It is suggested to start a series with position 1. But if you wish you can start with any position. Use keys "left" or "right" to move and mark star- ting position with cursor "up". X = starting position Enter C. Gerhardt GmbH & Co. KG... - Page 37 As long as the analysis is not in process you can activate the following functions manually: - Suction of sample and receiver - Adding H O, H , and NaOH Press "Enter" to start analysis. Enter C. Gerhardt GmbH & Co. KG...
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Page 38: Special Features Of The Serial Determination
"Temporary Cal- culation" with a blank value of 0.00 ml is done. Samples that have not yet been processed are marked with "Not analysed" on the print-out. C. Gerhardt GmbH & Co. KG... -
Page 39: Statistics
In order to be able to transfer data the LPT1 interface has to be connected to the parallel interface of the external PC. - Correction (only if "Results" is selected) The data selected is corrected. C. Gerhardt GmbH & Co. KG... -
Page 40: Calibration Data
"left" they are demarked. By pressing „Enter“ the series are processed in the defined sequence. Single determinations are marked with "Series 0". In contrast to the serial determination during the single determination the end of the analysis is displayed and not the starting time. C. Gerhardt GmbH & Co. KG... - Page 41 "up" or "down". By pressing „right“ they are marked and by pressing "left" they are demarked. Then the value displayed can be simply overwritten. Corrections are marked as such when printed. C. Gerhardt GmbH & Co. KG...
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Page 42: Error Messages
ANALYSIS CANNOT BE STARTED FOR deleted in order to provide storage capacity for RESULTS. MEMORY IS TAKEN COM- future results (see chapter 12 "Statistics"). This PLETELY message has to be confirmed by pressing "Enter". C. Gerhardt GmbH & Co. KG... - Page 43 If a series is called up that uses a program in which the units (weights, volumes) have been THE FOLLOWING PROGRAMS HAVE BEEN INCORRECTLY DEFINED changed the program has to be defined again. Call main menu "Programming" and check pro- gramming. C. Gerhardt GmbH & Co. KG...
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Page 44: Error Messages During The Calibration
DATE / TIME ENTRY INCORRECT Check time/date input. If necessary delete stored results. 13.5. Error Messages during the Programming/Sample Input If the input is not correctly defined or not allowed an error message is displayed during the program. C. Gerhardt GmbH & Co. KG... -
Page 45: Tubing Diagram
TUBING DIAGRAM 14. Tubing diagram LPT 1 RS 485 RS 485 Netz Niveau-Überwachung 12 b 12 a NaOH Sample distilled Waste Fig 14.1: Vapodest 50 - Tubing diagram C. Gerhardt GmbH & Co. KG... -
Page 46: Description Of The Structural Components And Tubing Connections
28 ..Outlet tubing, PVC 8/12 29 ..Verprene-tubing 8/12 30 ..Verprene-tubing 8/12 31 ..PVC-tubing 8/12 32 ..Level detector with plug for "Sample waste" tank 33 ..Knurled knob with socket C. Gerhardt GmbH & Co. KG... -
Page 47: Maintenance
MAINTENANCE 15. Maintenance In case of replacements of parts make sure that only original C. Gerhardt products are used! 15.1. Spare parts and accessories Parts description Order No. Distillation condenser 7676 Spare Parts Plastic screw connection for distillation condenser 16609... - Page 48 Glass distribution head Devarda VGD 7, top part 7475 Ventilation valve condenser (glass) 30244 Condenser, shortened 7676 PP-adaptor 40213 PP-distribution head distance piece 50025 Screw cap GL 32, open version 16604 Silicon-/PTFE seal GL 32 16607 C. Gerhardt GmbH & Co. KG...
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Page 49: Service And Cleaning
Condensate that might escape is collected in the drip tray. Please clean the drip tray regularly. Regularly check the state of the tubing and tubing connections and change if damaged. To minmize malfunctions of the Vapodest 50, we recommend to have it checked by authorized ser- vice personnel regularly. -
Page 50: Other
NH Volume [ml] 62005 x T x F (Consumption [ml] - Blank value [ml]) mg NO Volume [ml] 62,005 x T x F (Consumption [ml] - Blank value [ml]) g NO Volume [ml] C. Gerhardt GmbH & Co. KG...
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