The miVac Pressure Controller User Manual
Contents
1. ms VV Genevac Limited The Sovereign Centre Farthing Road Ipswich IP1 5AP United Kingdom Sales and Service Hotlines Service Hotline 44 0 1473 243000 Sales Hotline 44 0 1473 240000 Fax 44 0 1473 461176 Email salesinfo genevac co uk Web site www miVac co uk Genevac Inc SP Industries 815 State Route 208 Gardiner NY 12525 United States of America Sales and Service Hotline 1 845 687 5303 Fax 1 845 267 2212 Email salesinfo genevacusa com For main Distributor listing visit www mivac co uk contact distributors html Page 22 of 22 Warranty Statement This product is guaranteed for period of 12 months from the date of delivery to site In the unlikely event of any defect arising due to faulty materials or construction resulting in system failure the unit will be repaired free of charge This to include all labour and component costs incurred This warranty is subject to the following provisions 1 System must be sited installed and operated in accordance with User Manual Unit only used for the purpose it was sold and in accordance with Genevac published compatible solvent list Regular cleaning and preventative maintenance schedule to be adhered to as detailed in User Manual See item 3 5 Routine Checks on Page 6 Warranty does not cover accidental damage misuse modifications or inappropriate repair by untrained personnel 5 Warranty does not cover consumable items Failure to2. or damaged parts Installation Overview Follow the step by step instructions on the following page to install the pressure controller The illustration below shows a typical installation of a miVac concentrator soeedTrap pressure controller and pump e Leave approximately a 50mm air gap between each unit and ensure there is adequate ventilation e Observe local safety regulations Use the pipes and connectors supplied in the pressure controller connection kit this minimises the possibility of faulty connections e Check all of the system vacuum lines and connections for leaks before operating the system Page 4 of 22 04 6001 Issue 2 1 October 2008 miVac Pressure Controller Parts of the Pressure Controller Connection Kit 1 2 Hose 55mm long x 2 3 8 Hose 1m long x 2 33mm Hose Clips x 2 25mm Hose Clips x 4 1 2 3 8 Reducer x 2 Electrical Cable Installing the Pressure Controller If connecting the pressure controller to an existing miVac concentrator system first remove the 1 2 hose that connects the pump to the speedTrap Then proceed as follows 1 Connect a 1 2 hose 55mm long to a 3 8 hose 1m long using a 1 2 3 8 reducer Seal the connections using a 33mm and 25mm hose clip 2 Connect the 1 2 end of the hose assembly to the hose spigot of the speedTrap as shown using a 33mm hose clip 3 Repeat the procedure to make a second hose assembly and connect this to the ho
3. 2 1 October 2008 miVac Pressure Controller Safety and Maintenance Notes Warning Symbol This symbol is used throughout this manual It indicates hazards that can lead to injury or material damage to samples or equipment Safety A Read the following notes before operating the pressure controller It is important to understand the implications of safety to personnel and for the protection of sample integrity The Pressure Controller is intended for use in conjunction with the miVac Modular Concentrator series in chemical and physical laboratories and in industry Applicable regulations must be observed when using hazardous substances e g corrosive toxic microbiological radioactive Maintenance Routine maintenance of the pressure controller is not required however the valves within the pressure controller may be cleaned whenever necessary Any repair of this product should be carried out by Genevac personnel or approved representatives of Genevac using only approved Genevac spare parts Limitations of use Your miVac Pressure Controller is unsuitable for use with strong acids such as HCI TFA and HBr at all concentrations 04 6001 Issue 2 1 October 2008 Page 3 of 22 miVac Pressure Controller Installation Upon Delivery Please unpack your system at the point of receipt Check the contents of the delivery as soon as possible against the delivery note Notify your miVac Distributor immediately of any missing
4. As a Starting point use a value of 10 for Quattro concentrators and a value of 40 for Duo concentrators Optimise the sensitivity by increasing the PA value for volatiles and reducing the PA value for non volatiles Use mode 5 when optimum solvent recovery is paramount PRESSURE Automatically detects the sample s boiling point and defines the value as set point PS Detection sensitivity is controlled by parameter PA Sample ke Bolling OS ee Point TIME Stop To end the operation press the STOP key on the pressure controller Then press the STOP key on the concentrator 04 6001 Issue 2 1 October 2008 Page 15 of 22 miVac Pressure Controller R Mode 6 Switch on the miVac Modular Concentrator system and miVac Pressure Controller set the concentrator run type to no venting using the Select control Select mode 6 on the pressure controller using the 7UP or 4 DOWN keys o F STATE Reset the control parameters if required using the procedure Changing the Control Parameters on page 11 Press a miVac concentrator START key Wait until the vacuum pump starts before proceeding Press the START key on the pressure controller to operate the mode o P STATE The pressure reduces until the sample s boiling point is detected The pressure controller defines this point as set pressure PS The pressure controller then changes to mode 2 and reduces the pressure further by
5. T key then press the Pun key Wait until the pressure stabilises at the lowest attainable pressure Press the OK key for three seconds Press the 7UP or DOWN keys to select Calibrate Low Calibrate Low is selected when the STATE display shows CL Press the OK key to enable the setting to be changed The fourth position of the STATE display shows an E to indicate the value can now be edited Press the 7 UP or 4 DOWN keys to reset the value shown in the VALUE display to the same as the value shown on the vacuum gauge Press OK to enter the new CL value The E disappears from the STATE display Press the STOP key to exit the Calibrate low operation The system vents Wait until the vacuum system vents to atmospheric pressure Press the 7 UP or 4 DOWN keys to select Calibrate High Calibrate High is selected when the STATE display shows CH Press the OK key to enable the setting to be changed The fourth position of the STATE display shows an E to indicate the value can be edited Press the 7 UP or 4 DOWN keys to reset the value shown in the VALUE display to the same value as shown on the vacuum gauge Press the OK key to enter the new CH value The E disappears from the STATE display Press the STOP key to exit the Calibrate High operation Press the START key then press the Pm key Wait until the pressure stabilises at the lowest attainable pressure Verify that the pressure shown on the pressure controller is that same as that s
6. The miVac Pressure Controlle User Manual Issue 2 1 October 2008 miVac Pressure Controller Contents SFILOCUICTION assisa eE TEE 2 Safety and Maintenance Notes ssssssnssnnssnnnsnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnn mnnn nnn nnna 3 MAAN 5 MNO e ae aceartacnqesasosedcseseurcatesoaaedosecncasestedisasiacicerte 3 AO E E 3 MamtendhCE seserinis nn EEE Ee A TAa beaeateanmensbeseedecedussteeanenaatenecanene 3 E ANONS OT U O ca E 3 MOON easier ween remagteneec dus esueiiene dour aeneeensdes seneus sutweencersuueaeresususes 4 Upon LD SII asc ect ters enntoctees od setae EE EEEE EE E EEEE aE a 4 Installation OVES W eisereen a Eea 4 Parts of the Pressure Controller Connection Kit ccccccecsseeceeeeeceeeeeeeeesaeeesees 5 Installing the Pressure Controller ccccccccseeeccececceseeceeeeceeeseeesessueeceeeesseeeenes 5 Ea a T E EEE EEEE OEE E EE E E 6 Good Procedural Practice ccccccccssccsecceececeecceeeceueceueeceeecaeecsueeceeeseeesseesseesnaes 6 Routine CSCS sereis sate ntaecceccen seen baientaiesatunnd Ean DEEE ARARE Aa ENEE NA IREI REE 6 List Ol Acceptable Solvents cssirsirissisnrre a EEE 6 miVac Systems and Combustible Solvents 0 ccccceeeeeeeeeeeeeeeeseeeeeeseeeeenaeees 6 Genevac and the ATEX Directive cccccccccecccececeeeeeeeeeeeeseeeeseeeseeeseeeeseeseeesanes 6 MO SE ANON sais serrs sss eae es wa ose ea cs E see ace eeesceeeteeeceeee 7 WENING CH ceo cc sente
7. adhere to the above would invalidate the warranty and result in the costs of repairs being charged Contact Information See opposite please ensure that you have the serial numbers at hand for the components of your system Disposal and Recycling QW The miVac product should not be discarded in your regular disposal stream Contact your Distributor or Genevac for proper disposal instructions Within the EU it is Genevac s responsibility under the WEEE directive to provide for the recycling of their products 04 6001 Issue 2 1 October 2008
8. aeeeseueeseueessaeessesessesensees 22 Contact normato onsitccccevicncemanendicrientuiecidnmnboeonanasenetiedeossoedsintanabexendncatucabumesewondecelos 22 DISPOSAl and RECYCIING svsidosenossetveceuscscsmws noe eiaa riais 22 These instructions are subject to change without notice No part of these instructions may be reproduced in any form or be processed duplicated or distributed by electronic or optical means without the written permission of Genevac Limited All rights reserved Genevac Limited 04 6001 Issue 2 1 October 2008 Page 1 of 22 miVac Pressure Controller Introduction The miVac Pressure Controller is designed to improve concentration performance and solvent recovery of the miVac Modular Concentrator series This manual is a guide to the installation set up and operation of the pressure controller It facilitates the most efficient procedure to protect sample integrity and ensure optimum performance at all times Use the miVac Pressure Controller User Manual in conjunction with the miVac Modular Concentrator Series User Manual Itis advisable to keep these manuals near the place of use so they are available to personnel when required Controller complete Ventilation valve RS 232 NOT USED Inert gas connection Power supply plug Sensor integrated Main switch Off On Check valve integrated Fuse T 630 mA NOT USED Connection vacuum pump Control valve Connection vacuum apparatus Page 2 of 22 04 6001 Issue
9. age 5 C 40 C 0 90 Sea level 12 000m 04 6001 Issue 2 1 October 2008 miVac Pressure Controller EC Declaration of Conformity The miVac Pressure Controller conform to the following directives 73 23 EU Low Voltage Directive 98 37 EU Machinery Directive 89 336 EU Electromagnetic Compatibility Directive The miVac Pressure Controller fulfils the following product standards BS EN 61010 1 Safety requirements for electrical equipment for measurement control or laboratory use BS EN 60204 1 Electrical equipment of machines BS EN 50110 1 DIN VDE 0105 100 Operation of electrical installations BS EN 292 1 and 292 2 Safety of machines devices and plants The CE sign is located on the rating plate Observe the binding national local and plant specific regulations This system is to be used in a pollution degree 1 environment no pollution or only dry non conductive pollution Electrical Safety never ne used with any interruption to the safety earth conductor It is an installation This pressure controller is a class 1 product according to IEC classification It must A category Il product and is intended to operate from a normal single phase supply 04 6001 Issue 2 1 October 2008 Page 19 of 22 miVac Pressure Controller Notes Page 20 of 22 04 6001 Issue 2 1 October 2008 miVac Pressure Controller Notes 04 6001 Issue 2 1 October 2008 Page 21 of 22 miVac Pressure Controller
10. concentrator speedTrap and pump were manufactured after April 2007 The date of manufacture is shown on the instrument s serial plate miVac Systems and Combustible Solvents Please note it remains the responsibility of the user to consider safety when evaporating any combustible solvents and to ensure the system is placed in a well ventilated environment Genevac and the ATEX Directive This Statement is applicable only to Member Countries of the EU Please note that it remains the responsibility of the user to consider any solvents being evaporated within the context of the ATEX directive The presence of solvents on the list above indicates only that they will not damage the system If further information is required please contact your Sales Representative or visit http Awww miVac co uk Page 6 of 22 04 6001 Issue 2 1 October 2008 miVac Pressure Controller Operation Switching on Switch on the miVac Pressure Controller using the OFF ON power switch located above the mains inlet connector There is a short initialising routine during which a beep sounds and all light elements light up briefly to confirm operation Switch on the miVac Modular Concentrator and set the run type to no venting see the miVac Modular Concentrator User Manual for details The operation of the pressure controller may be erratic if alternative concentrator methods H2O water or OH alchohols are selected Control Panel 345 F
11. d E tes 7 A OURO INC et iescactcctencstyhce versie E naee tence joincesttind teen E 7 Operating Modes of the Pressure Controller an Overview cccccccseeeeseeeeeees 8 Selecting the Operating MOde ccccccccceeecceececeeeeceueeceeeeecsueecsueesessesseseeseass 8 Activating deactivating the Selected Operating Mode ccccseccseeeeeeeeeeeees 9 Seting Full VAC UM otesicectcente sn aticncanee anian aE AARE ARDANE RAER RENARE ERN RARE 9 Venting the System cccccccsscccseseceeseeceeeceseecseeeceeeecsueeseueeseueesseseseaeessesessaeeeses 9 Control Parameters sorarsa E AA 10 Viewing the Parameter Setting during Operation ccccccseeecsseeeeeeeeeneeesaaees 10 Changing the Control Parameters cccccseccceseecceeeceeeeceeeeceseeseeseceseessaeesees 11 Changing the Pressure Set Point during Operation ccccseceeeeeseeeeeeeeeeeees 12 Operating Modes of the Pressure Controller in Detail cccccssssesseeeeeeeeeeenees 13 Vode Toscer adeasgadseadenemeadsuapadecioua aiat numaee seseaueoaasaasueudaetonsnesoneaneenee 13 NOCO I oaa E E 14 VOGO See A E A E E E 15 VOOG O ae E A A E E A E E 16 C anD AO sna E e EE E AUSE E E e 17 Ttecnnical Dala csore eier EED EE eE AE r EEEE EEEa 18 EC Declaration of Conformity digeevacetieracssedecinsuiesie ane EAEE 19 ETO CUA AS seesinane EEE EE EARE AEREAS 19 Warranty Statement cccccceecccsseecseeeceececeeeeeeeeecsuese
12. ent setting for the associated parameter Press the 7UP or 4 DOWN keys to select the required parameter Only the control parameters associated with the selected mode are displayed Press the OK key The fourth position of the STATE display shows an E to indicate the parameter value may now be edited Press the 7UP or DOWN keys to select a new value for the parameter Press the OK key to select the new parameter value Repeat the procedure for other parameters as required Press the STOP key to finish the parameter setting operation and return to the mode selector 04 6001 Issue 2 1 October 2008 Page 11 of 22 miVac Pressure Controller Changing the Pressure Set Point during Operation Press and hold the 7 UP or 4 DOWN keys while the pressure controller is operating The fourth position of the STATE display changes to S and the VALUE display increments up or down Release the 7 UP or DOWN key to select the required set point value Note The pressure set point can be reduced but not increased once the vacuum system reaches the pressure set point The pressure controller changes the pressure in the vacuum system and continues controlling the pressure at the new set point There are now two options e Press the OK key to permanently store the new set point value e Take no action The set point reverts to the previously set value when the STOP key is pressed Additional Information The miVac Pressure Control
13. hown on the vacuum gauge Repeat the calibration procedure if there is a significant discrepancy 04 6001 Issue 2 1 October 2008 Page 17 of 22 miVac Pressure Controller Technical Data Sensor Sensor type Measuring Range Measuring uncertainty Controller Sensor interface Scan frequency Resolution ADC Power Supply Sensor signal Pressure indicator Switching control accuracy Power consumption controller in normal operation Fuse internal controller Power pack Operating voltage Operating frequency Output voltage Output current Output power Entire Unit Protective system Working temperature Device fuse Dimensions W D H weight Connectors IN OUT RS232 OUT control valve Out water valve Inert gas Vacuum apparatus Vacuum pump Other components Check valve Environment Ambient temperature Relative humidity Altitude Ambient temperature Relative humidity Altitude Page 18 of 22 Integrated Ceramic 1 1100mbar 2 FSmbar Conductor interface 10Hz 12Hz 5V stabilised 0 5 to 4 5V optimally also 0 5V or 4 20mA Digital display mbar torr or PSI 1 digit Max 20W depending on control power 5A Internal 90 264V AC 50 60Hz 24V DC 1 25A 30W IP20 15 40 C T0 630A 195 178 105mm 1 6kg Not available Integrated Not available Not available Hose nozzle DN4 Hose nozzle DN8 integrated Operating 0 C 30 C 0 95 Sea level 1 600m Stor
14. i TAY He anne fe ON EB PTT cen ef E Arrow key increments values upwards Setting level selects the parameters to be set activates the setting value Transfers temporary values into the memory during operation DOWN P min Reduces the pressure to the lowest attainable pressure LED illuminates when active ON OFF Power ON OFF Switch LED illuminates when OFF in standby pai Eos eal al ape sees ie oe Eos Eam Ze 04 6001 Issue 2 1 October 2008 Page 7 of 22 miVac Pressure Controller Operating Modes of the Pressure Controller an Overview Set the miVac concentrator run type to no venting before operating the miVac system with the pressure controller One of four operating modes may be selected on the miVac Pressure Controller Enter control parameter settings for each operating mode to set up optimum vacuum control profiles for specific applications The distinguishing characteristic of each mode is as follows Manual Modes e Mode1 Reduces the pressure to a set point PS Then controls the pressure at PS within a hysteresis allowance defined by the value PH e Mode 2 Reduces the pressure to a set point PS Then reduces the pressure further by value PL in equal increments over time tL the maximum rate of change of pressure is limited to 1 mbar s Then reverts to mode 1 and continues controlling the pressure at a new set point which is equal to PS PL with
15. in a hysteresis allowance defined by the value PH Automatic Modes e Mode 5 Reduces the pressure until the sample s boiling point is detected Defines this point as set point PS Then reverts to mode 1 and continues controlling the pressure at PS within a hysteresis allowance defined by PH e Mode 6 reduces pressure until the sample s boiling point is detected Defines this point as the set point PS Then switches to mode 2 reduces the pressure further by value PL in equal increments over time tL Then reverts to mode 1 and continues controlling the pressure at a new set point which is equal to PS PL within a hysteresis allowance defined by the value PH Fuller details of the features of each operating mode are discussed in later sections of this user manual see Operating Modes of the Pressure Controller in Detail Experimentation will be required to determine the optimum settings for a particular application Selecting the Operating Mode Select the operating mode using the 7 UP or 4 DOWN keys The operating mode may not be changed when the system is operating The first position of the STATE display shows the selected mode Page 8 of 22 04 6001 Issue 2 1 October 2008 miVac Pressure Controller Activating Deactivating the Selected Operating Mode Switch on the miVac system and the pressure controller Select the no venting run setting on the miVac concentrator Press either the the Manual start
16. key or the Auto start key on the miVac concentrator Wait for the pump to start then press the START key on the pressure controller A dash symbol appears in the second position of the STATE display to confirm the system is operating in the displayed mode il F STATE Press the STOP key on the pressure controller to end the operation of the system The dash symbol disappears and control is disabled The vacuum system vents to atmospheric pressure Then press the STOP key on the miVac concentrator If the system stops automatically under Auto control of the miVac concentrator press the STOP key on the pressure controller Setting Full Vacuum Press the Pmin key An LED illuminates to show the control is active The pressure in the system reduces to the lowest attainable level Press the Pmin key again to deactivate the full vacuum control and resume vacuum control at the previous setting Venting the System Press and hold the AIR key to vent the system Release the air key to cease venting and resume vacuum control at the previous setting Note If the system is operating in an automatic mode mode 5 or mode 6 the search for the boiling point ends The pressure controller switches to mode 1 and continues controlling the vacuum system at the current pressure 04 6001 Issue 2 1 October 2008 Page 9 of 22 miVac Pressure Controller Control Parameters The following tables list the settable mode parameters S Ti
17. ler is not compatible for use with the H2O water and OH alchohols run type settings of the miVac concentrator This is because the concentrator controls the system vacuum using a timed pump venting sequence when these run types are selected The pressure controller would have conflicting requirements for control of the vacuum system causing the system to behave erratically particularly when the pressure controller is searching for a boiling point However for applications where the H2O or OH run type settings offer considerable advantages over using the no venting setting improved performance can be achieved by starting system with the pressure controller in an automatic mode mode 5 or 6 see Operating Modes of the Pressure Controller an Overview and switching the miVac concentrator run type setting after the system pressure has reached the boiling point Wait until the system reaches final control pressure this is where the pressure controller switches to mode 1 Then switch the miVac concentrator to either H2O or OH as required Page 12 of 22 04 6001 Issue 2 1 October 2008 miVac Pressure Controller Operating Modes of the Pressure Controller in Detail Mode 1 Switch on the miVac Modular Concentrator system and miVac Pressure Controller set the concentrator run type to no venting using the Select control Select mode 1 on the pressure controller using the 7UP or DOWN keys Reset the control parameter
18. me setting t Time for the pressure reduction to PL pressure Lowered Modes 2 6 Not relevant for miVac application Modes 1 2 5 6 C Pressure sensor calibration Calibration point at normal pressure High Set this last Calibration point at Low pressure at lowest possible pressure e g 10 Set this first mbar F Frequency reduction in starting from the maximum operating frequency Not relevant for miVac application Modes 5 6 Viewing the Parameter Setting during Operation Press the START key whilst the pressure controller is operating The fourth position of the STATE display shows a parameter code letter The VALUE display shows the associated programmed value Press the 7 UP or DOWN keys to select other parameters Note only parameters applicable to the currently selected mode are shown The pressure controller display automatically reverts to the mode operating display after a short period The programme continues to operate without interruption during this time Page 10 of 22 04 6001 Issue 2 1 October 2008 miVac Pressure Controller Changing the Control Parameters The Pressure Controller must be inactive to allow access to the control parameter settings Press the STOP key to deactivate the pressure controller Select the required operating mode See Selecting the Operating Mode for details Press the OK key for three seconds The STATE display shows the parameter The VALUE display shows the curr
19. nd controls the pressure at the value defined by PS PL within a hysteresis allowance defined by the value PH Use mode 2 when bumping is anticipated or when a shift in boiling point results from the concentration of a volatile component of a mixture PRESSURE Set Point PS PS PL Example If PS 30 and PL 10 then the final pressure 20 To end the operation press the STOP key on the pressure controller Then press the STOP key on the concentrator Page 14 of 22 04 6001 Issue 2 1 October 2008 miVac Pressure Controller Mode 5 Switch on the miVac Modular Concentrator system and miVac Pressure Controller set the concentrator run type to no venting using the Select control Select mode 5 on the pressure controller using the 7UP or 4 DOWN keys s F STATE Reset the control parameters if required using the procedure Changing the Control Parameters on page 11 Press a miVac concentrator START key Wait until the vacuum pump starts before proceeding Press the START key on the pressure controller to operate the mode Si P STATE The pressure reduces until the sample s boiling point is detected The pressure controller defines this point as set pressure PS The pressure controller then changes to mode 1 and controls the pressure at PS within a hysteresis allowance defined by the value PH The sensitivity of the controllers ability to detect the boiling point can be set using parameter PA
20. s if required using the procedure Changing the Control Parameters on page 11 Press a miVac concentrator START key Wait until the vacuum pump starts before proceeding Press the START key on the pressure controller to operate the mode The pressure reduces to the set point PS The pressure controller then controls the pressure at PS within a hysteresis allowance defined by the value PH PRESSURE Hysterisis Allowance Set Point PS TIME Stop The set point PS may be altered while the mode is operating See Changing the Pressure during Operation for details To end the operation press the STOP key on the pressure controller Then press the STOP key on the concentrator 04 6001 Issue 2 1 October 2008 Page 13 of 22 miVac Pressure Controller Mode 2 Switch on the miVac Modular Concentrator system and miVac Pressure Controller set the concentrator run type to no venting using the Select control Select mode 2 on the pressure controller using the 7UP or 4 DOWN keys Reset the control parameters if required using the procedure Changing the Control Parameters on page 11 Press a miVac concentrator START key Wait until the vacuum pump starts before proceeding Press the START key on the pressure controller to operate the mode STATE The pressure reduces to the set point PS Then reduces further by value PL in equal increments over time tL The pressure controller then changes to mode 1 a
21. se spigot of the pump as shown 4 Cut each of the hose assemblies to an appropriate length and connect them to the hose spigots of the pressure controller using 25mm hose clips as shown remove the blanking plugs from the pressure controller spigots if these are fitted Pipe reducers Connect the pressure controller to the mains power supply using the power cable supplied 04 6001 Issue 2 1 October 2008 Page 5 of 22 miVac Pressure Controller General Good Procedural Practice General rules for safe operation of a system e Ensure only users familiar with all the issues outlined in this User Manual should be permitted to operate the equipment e Donot place any objects on top of any of the system components during a run Routine Checks Check all hose joints regularly to ensure that they are secure Clean the exterior paintwork with a soft lint free cloth using one of the following Detergent solution Bleach solution if using biological agents Methanol Ethanol List of Acceptable Solvents Acetic Acid 1 2 Dichloroethane Methyl Tertiary Butyl Ether Acetonitrile ACN Dioxane Methylene Chloride DCM Acetone Ethanol EtOH Propan 1 ol or Propanol Ammonium Hydroxide NH3OH Ethyl Acetate Propan 2 ol or isopropyl Butan 1 ol Formic Acid alcohol IPA Butan 2 ol Heptane THF Butyl Acetate Hexane Hex Toluene Chloroform TCM Methanol MeOH Water Only use the solvents shown in red in systems where all units
22. value PL in equal increments over time duration tL the maximum rate of change of pressure is limited to 1 mbar s The pressure controller then changes to mode 1 and controls the pressure at PS PL within a hysteresis allowance defined by the value PH The sensitivity of the controller s ability to detect the boiling point can be set using parameter PA see Mode 5 for details Use mode 6 when rapid concentration time is paramount Reducing the pressure below the boiling point causes the evaporation rate to increase but this is at the expense of solvent recovery Some experimentation is required to determine the optimum settings for a particular application PRESSURE Sample Boiling Point PS PL To end the operation press the STOP key on the pressure controller Then press the STOP key on the concentrator Page 16 of 22 04 6001 Issue 2 1 October 2008 miVac Pressure Controller Calibration Recalibrate the pressure controller every six months to compensate for any drift in the pressure sensor output signal Recalibrate also if the pressure shown on the display is implausible Connect a comparison measurement device a vacuum gauge to a vacuum pipe of the miVac system via a T piece 10 11 12 13 14 15 16 17 18 19 Press the miVac concentrator manual START key Wait until the vacuum pump starts before proceeding Press the OK key for three seconds Press the pressure controller STAR
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