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3.19 Connecting and rinsing the guard column

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940 Professional IC Vario TWO (2.940.2100)

￭

Guard column (suitable for separation column)

Connecting the guard column

1 Removing the coupling

Remove the coupling (6.2744.040) installed between the column
inlet capillary and the column outlet capillary for the initial start-up.

2 Preparing the guard column

￭

Remove the stoppers or the stopper and the sealing cap from the
guard column.

3 Connecting the guard column

CAUTION

When inserting the guard column, ensure that it is inserted cor-
rectly based on the marked flow direction (if specified).

￭

Fasten the inlet of the guard column to the column inlet capillary
using a short pressure screw (6.2744.070).

￭

If the guard column is connected to the separation column using
a connection capillary, fasten this connection capillary to the
guard column outlet with a pressure screw.

Rinsing the guard column

1 Rinsing the guard column

￭

Place a beaker under the guard column's outlet.

Содержание 940 Professional IC Vario TWO

Страница 1: ...940 Professional IC Vario 940 Professional IC Vario TWO Manual 8 940 8024EN 2017 07 31...

Страница 2: ......

Страница 3: ...AG CH 9100 Herisau Switzerland Phone 41 71 353 85 85 Fax 41 71 353 89 01 info metrohm com www metrohm com 940 Professional IC Vario 940 Professional IC Vario TWO 2 940 2100 Manual 8 940 8024EN 2017 07...

Страница 4: ...echcom metrohm com This documentation is protected by copyright All rights reserved This documentation has been prepared with great care However errors can never be entirely ruled out Please send comm...

Страница 5: ...Installation 14 3 1 Setting up the instrument 14 3 1 1 Packaging 14 3 1 2 Checks 14 3 1 3 Location 14 3 2 Capillary connections in the IC system 14 3 3 Removing the handle 17 3 4 Removing transport lo...

Страница 6: ...connections 47 5 3 Servicing the door 47 5 4 Column thermostat Replacing the capillaries 47 5 5 Handling the eluent 49 5 5 1 Manufacturing eluent 49 5 5 2 Changing the eluent 50 5 6 Servicing the elue...

Страница 7: ...itions 76 7 2 Instrument 76 7 3 Ambient conditions 76 7 4 Housing 77 7 5 Weight 77 7 6 Leak sensor 77 7 7 Column thermostat 77 7 8 Eluent degasser 78 7 9 High pressure pump 78 7 10 Injection valve 79...

Страница 8: ...ng weighting and aspiration filter 24 Figure 9 High pressure pump with purge valve 26 Figure 10 Inline filter 27 Figure 11 Pulsation absorber 28 Figure 12 Exchanging the sample loop 29 Figure 13 Colum...

Страница 9: ...o contact with the electron ics to a large extent A leak sensor is integrated into the wet end Its environmental compatibility Its low noise emissions The intelligent MagIC Net software The 940 Profes...

Страница 10: ...history operating hours service data etc are stored Inline filter Inline filters protect the separation column reliably from potential contami nation from the eluent The filter pads with 2 m pore siz...

Страница 11: ...e 940 Professional IC Vario therefore requires the user to have basic knowledge and experience in handling toxic and caustic sub stances Knowledge regarding the application of fire prevention measures...

Страница 12: ...st electrostatic charges WARNING Electronic components are sensitive to electrostatic charges and can be destroyed by discharges Do not fail to pull the power cord out of the power socket before you s...

Страница 13: ...Equipment The correct disposal of your old instrument will help to prevent negative effects on the environment and public health More details about the disposal of your old instrument can be obtained...

Страница 14: ...to electrical current WARNING This symbol draws attention to a possible hazard due to heat or hot instrument parts WARNING This symbol draws attention to a possible biological hazard CAUTION This symb...

Страница 15: ...older Offers space for the eluent bottle s and additional accessories 2 Detector chamber Offers space for two embedded detectors and additional accessories 3 Column holder For a third separation colum...

Страница 16: ...Inline filter 10 Sample degasser 11 Injection valve 12 Pulsation absorber 13 Base tray With leak sensor 14 Purge valve For deaerating the high pressure pump 15 High pressure pump 16 Eluent degasser 1...

Страница 17: ...le Enables access to the detector chamber 3 Drainage tubing connection For connecting the drainage tubing which guides escaped liquids away from the detec tor chamber 4 Transport locking screws For se...

Страница 18: ...e high pressure pump in the bottom plug in when transporting the instrument These screws are only installed if a plug in with a high pressure pump is used in the bottom slot 12 Base tray With leak sen...

Страница 19: ...syringe 6 2816 020 from outside For manual sample injection 2 Opening for capillaries For up to 3 capillaries An opening for up to 3 capillaries is located on the door of the instru ment The two Luer...

Страница 20: ...back panel is outfitted with openings through which capil laries and cables can be lead out of the detector chamber Ducts for capillaries There are ducts for capillaries between the instrument and ba...

Страница 21: ...2 Overview of the instrument 940 Professional IC Vario TWO 2 940 2100 13 Figure 5 Ducts for capillaries...

Страница 22: ...operation free of vibrations protected from corrosive atmosphere and contamination by chemicals The instrument should be protected against excessive temperature fluctua tions and direct sunlight 3 2...

Страница 23: ...nert flexible and temperature resistant up to 80 C They can be readily cut down to the desired length with the capillary cutter 6 2621 080 Use PTFE capillaries 6 1803 0x0 are used for the low pressure...

Страница 24: ...pened with ace tone 2 Slide the pressure screw over the capillary Ensure that the capillary protrudes 1 to 2 mm from the tip of the pressure screw 3 Push the capillary into the connection or coupling...

Страница 25: ...is equipped with a handle in order to make it easier to transport The handle can be removed once the instrument is in place in the lab Accessories You do not need any accessories for the following wor...

Страница 26: ...rument and labeled with Transport security screws Remove these transport locking screws before the initial start up Accessories For this step you need 4 mm hex key 6 2621 030 Removing the transport lo...

Страница 27: ...f The software displays a warning The leak sensor functions properly only if the following preconditions are met The drainage tubing is connected The leak sensor connection cable is inserted into the...

Страница 28: ...the bottle holder 3 Attach one end of the 20 cm long piece to the drainage tubing con nection on the detector chamber 4 Attach each of the loose ends of both pieces of silicone tubing to one end of th...

Страница 29: ...lug the plug for the leak sensor connection cable into the leak sen sor connection socket labeled Leak Sensor 3 6 Column thermostat The column thermostat ensures that the flow of eluent and the separa...

Страница 30: ...608 070 The eluent bottle cap GL 45 accessory set 6 1602 160 This accessory set contains the bottle cap an M6 tubing nipple an M8 tubing nipple two O rings and an M6 and M8 threaded stopper The tubing...

Страница 31: ...lways wear gloves when handling the aspiration filter In order to avoid air bubbles after the installation of the aspiration fil ter we recommend pre rinsing the aspiration filter with water or elu en...

Страница 32: ...ent bottle Insert the eluent aspiration tubing into the eluent bottle 6 1608 070 Tighten the bottle cap on the eluent bottle Adjust the length of the eluent aspiration tubing so that the aspi ration f...

Страница 33: ...luents or eluents with a low buffer capacity first a little cotton then with CO2 adsorber material For all other eluents only with cotton Remove the plastic cover from the large opening of the adsorbe...

Страница 34: ...t degasser is completely connected No installation work is required 3 9 Installing the high pressure pump The intelligent and low pulsation high pressure pump pumps the eluent through the system It is...

Страница 35: ...orber as protection against particles 1 2 6 2744 070 6 2744 070 6 2821 120 Figure 10 Inline filter 1 Inlet capillary Connected to the purge valve 2 Outlet capillary Connected to the pulsation absorber...

Страница 36: ...of the valve a defined quantity of sample solu tion is injected and flushed to the separation column with the eluent The quantity of sample solution injected is determined by the volume of the sample...

Страница 37: ...allation work is required Optional Exchanging the sample loop The sample loop can be replaced to match the application see Table 1 page 28 NOTE Only use PEEK pressure screws 6 2744 010 to connect capi...

Страница 38: ...3 Installing the conductivity detector The 940 Professional IC Vario provides enough space for two detectors and additional accessories in the detector chamber The detectors are available as separate...

Страница 39: ...acing the detector in the instrument Follow the instructions in the chapter Inserting the detector in the manual for the detector 3 15 Connecting the sample degasser optional Gas bubbles in the sample...

Страница 40: ...220 from the inlet and outlet of the sample degasser 2 Connecting the outlet capillary Push a long pressure screw over the loose end of the capillary connected to Port 1 of the injection valve Tighten...

Страница 41: ...ible connections shorten the capil lary if necessary 3 16 Connecting the instrument to a computer NOTE If the instrument is connected to the computer then it must be switched off Accessories For this...

Страница 42: ...n inside the instrument Only personnel who have been issued Metrohm qualification may perform service and repair work on electrical and electronic parts Connecting the power cord Accessories Power cor...

Страница 43: ...ng 6 2744 040 is being used instead of the columns 1 Preparing the software Start the MagIC Net computer program Open the Equilibration tab in MagIC Net Work place Run Equilibration Import or create a...

Страница 44: ...purge valve using the rotary knob approx turn Switch on the high pressure pump in MagIC Net Use the syringe to aspirate eluent until there are no more air bub bles in the eluent aspiration tubing Swi...

Страница 45: ...mn can be found in the Metrohm Column Program which is available from your Metrohm representative the leaflet provided along with your separation column or the product information about the separation...

Страница 46: ...pper and the sealing cap from the guard column 3 Connecting the guard column CAUTION When inserting the guard column ensure that it is inserted cor rectly based on the marked flow direction if specifi...

Страница 47: ...ding which separation column is suitable for your application can be found in the Metrohm Column Program the product information for the separation column or it can be obtained through your representa...

Страница 48: ...column 40 940 Professional IC Vario TWO 2 940 2100 NOTE Connect the separation column only after the initial start up of the instrument Until that point insert a coupling 6 2744 040 instead of the gua...

Страница 49: ...no guard column is used not recommended Connect the col umn inlet capillary to the inlet of the separation column using a short pressure screw 6 2744 070 3 Rinsing the separation column Place a beake...

Страница 50: ...tion of the eluent is modified Conditioning the system 1 Preparing the software CAUTION Ensure that the configured flow rate is not higher than the flow rate permitted for the corresponding column ref...

Страница 51: ...p to the detector are leak tight If eluent is leaking out anywhere tighten the corresponding pressure screw further or loosen the pressure screw check the end of the capil lary and shorten it using th...

Страница 52: ...IC Vario TWO 2 940 2100 4 Operation The 940 Professional IC Vario TWO is operated solely using the MagIC Net software You can find information on operating the software in the tuto rial for MagIC Net...

Страница 53: ...instrument has been designed so that liquid is largely prevented from being able to get inside the instrument However unplug the power plug immediately if you suspect that corrosive media have got ten...

Страница 54: ...irectly with each other using a coupling 6 2744 040 3 Rinse the IC system for 15 minutes with methanol ultrapure water mixture 1 4 4 Optional Only if the IC system is equipped with a suppressor In the...

Страница 55: ...with an inner diameter of 0 25 mm between the high pressure pump and the detector high pressure section 5 3 Servicing the door CAUTION The door is made of PMMA poly methyl methacrylate It must never...

Страница 56: ...l IC Vario TWO 2 940 2100 1 3 2 1 1 1 1 2 Figure 13 Column thermostat 1 Openings For feeding capillaries into and out of the instrument 2 Preheating grooves For regulating the temperature of the eluen...

Страница 57: ...eneral measures in mind when handling the eluent The supply bottle with the eluent must be connected as indicated in chapter 3 7 page 22 This is particularly important for eluents with vol atile solve...

Страница 58: ...ely successive solutions must be miscible If the system must be rinsed with organic solvents several solvents with rising or falling lipophilicity must be used NOTE To change the eluent remove the gua...

Страница 59: ...nt through a filter with a pore size of 0 45 m and aspirating it via an aspiration filter 6 2821 090 Ensure that no precipitates can form when changing the eluent Salt crystals between the piston and...

Страница 60: ...et valve holder 3 Fastening screw 4 Pump head 5 Inlet valve holder 6 Pressure screw short 6 2744 070 Fastened to the inlet valve holder 7 Eluent aspiration tubing connector Consists of a coupling with...

Страница 61: ...let valve 2 Remove the pump head 3 Service both pistons one after the other a Remove piston b Dismantle the piston c Replace the piston seal d Replace the zirconium oxide piston e Assemble the piston...

Страница 62: ...the outlet valve from the outlet valve holder 3 2 Cleaning the outlet valve Start by rinsing the outlet valve in the direction of eluent flow using a wash bottle filled with ultrapure water RBS soluti...

Страница 63: ...sert the outlet valve into the outlet valve holder the seal must be visible 1 Screw the outlet valve holder up into the pump head 2 and tighten it firmly by hand and then retighten it one additional t...

Страница 64: ...he inlet valve from the inlet valve holder 3 2 Cleaning the inlet valve Start by rinsing the inlet valve in the direction of eluent flow using a wash bottle filled with ultrapure water RBS solution or...

Страница 65: ...and then retighten it one additional turn using the adjustable wrench 3 Refasten the connection capillary to the connection of the eluent aspiration tubing 14 7 Removing the pump head Accessories For...

Страница 66: ...move the pressure screw on the pump head s outlet 14 8 3 Loosen and remove the four fastening screws 14 3 using the hex key 4 Remove the pump head 14 4 Servicing the piston Carry out the following wor...

Страница 67: ...ad 6 Inlet valve 6 2824 170 7 Inlet valve holder 8 Zirconium oxide piston 6 2824 070 9 Piston cartridge Accessories For this step you need the following accessories You can find these parts in the acc...

Страница 68: ...ston seal 6 2741 020 Replacing the piston seal Figure 17 Removing the piston cartridge from the pump head 1 Piston cartridge 2 Backup ring 1 Removing the piston cartridge Loosen the piston cartridge 1...

Страница 69: ...new piston seal into the tool Insert the new piston seal into the recess of the sleeve 18 1 of the tool for piston seal The sealing spring must be visible from the out side Figure 18 Inserting the pi...

Страница 70: ...n opening the piston cartridge counteract the pressure from the spring and carefully unscrew the cartridge Loosen the piston cartridge s screw with an adjustable wrench and carefully unscrew the screw...

Страница 71: ...washer Assemble the retaining washer at the same point on the new pis ton 4 Putting the piston cartridge together Insert the inner plastic sleeve the spring and the spring retainer into the piston car...

Страница 72: ...e mounted the wrong way as it has fastening bolts with different bore hole depths i e one fastening bolt is longer than all others The bore hole with the greatest depth must therefore be aligned with...

Страница 73: ...let 2 5 9 Servicing the inline filter NOTE You can find a video sequence for this task in the Multimedia Guide IC Maintenance or on the Internet at http ic help metrohm com Maintenance interval The fi...

Страница 74: ...er Part of the acces sories 6 2821 120 3 Filter 6 2821 130 Pack contains 10 pieces 1 Shutting off the flow Switch off the high pressure pump in the software 2 Removing the inline filter Unscrew both p...

Страница 75: ...filter screw 20 2 back into the filter housing 20 1 and tighten by hand Then use two adjustable wrenches 6 2621 000 to tighten it slightly 3 Remounting the inline filter Screw pressure screws back on...

Страница 76: ...y over The time required to rinse the sample path with the new sample is called the rinsing time The rinsing time depends on the transfer time The transfer time corresponds to the time the sample need...

Страница 77: ...lied rinsing time is sufficient by measuring the sample carry over directly Proceed as follows to do this 1 Preparing two samples Sample A A typical sample for the application Sample B Ultrapure water...

Страница 78: ...ive 5 14 2 Protecting the separation column We recommend using the following protective measures so that the sepa ration column retains its separating efficiency for as long as possible Microfilter bo...

Страница 79: ...lementing quality man agement measures for instruments and software Qualification Please contact your local Metrohm representative for support in qualifica tion of instruments and software The Install...

Страница 80: ...heck the eluent path and eliminate the block age Contaminations in the elu ent Check the quality of the chemicals and the water High pressure pump Defective piston seals Replace the piston seals see C...

Страница 81: ...ace the separation column see Con necting the separation column page 41 The eluent contains gas bubbles Ensure that the connectors for the eluent degasser are firmly connected Deaerate the high pressu...

Страница 82: ...14 4 page 70 Replace the separation column see Con necting the separation column page 41 Extreme spread of the peaks in the chromatogram Splitting dual peaks Capillary connections Dead volume in the s...

Страница 83: ...00 75 Problem Cause Remedy Injection valve Defective Request Metrohm Service Vacuum is not being built Eluent degasser Vacuum connection on the rear of the instrument is not tightly sealed Seal the Va...

Страница 84: ...Metal free IC system Compact system with modular design Up to two complete chromatographic systems in one housing Material Painted CFC free polyurethane hard foam fire class V0 Operating pres sure ran...

Страница 85: ...accessories 7 6 Leak sensor Type Electronic no calibration necessary 7 7 Column thermostat Type Thermostat using Peltier technology for two intelligent separation col umns Adjustable tem perature rang...

Страница 86: ...crement 1 L min Reproducibility of the eluent flow 0 1 deviation Pressure range Pump 0 50 0 MPa 0 500 bar Pump head 0 35 0 MPa 0 350 bar applies for the standard PEEK pump head Residual pulsa tion 1 S...

Страница 87: ...ector You can find the technical specifications for the detector in the manual for the detector 7 12 Sample degasser Material Fluoropolymer Resistance to sol vents No restriction except PFC Time to es...

Страница 88: ...type A labeled USB 1 and USB 2 MSB 2 MSB 8 pin Mini DIN female labeled MSB 1 and MSB 2 for Dosino stirrer remote lines etc Detector 2 15 pin high density D sub female labeled Detector 1 and Detec tor...

Страница 89: ...ernet browser 2 Under Find products accessories and applications by enter the article number e g 2 940 2100 The search result is displayed 3 Under Products click on More information Detailed informati...

Страница 90: ...ation filter 49 see Inline filter 27 Flow fluctuations 53 Flow increment 78 Flow range 78 Flow rate 78 Frequency 79 G Grip Also see Handle 17 Guard column Installation 37 Rinse 38 H Handle 17 Heating...

Страница 91: ...lation 31 Technical specifications 79 Sample loop 28 Sample path Rinse 68 Separation column Installation 39 Protection 2 27 70 Regeneration 70 Rinse 41 Separating efficiency 70 Storage 70 Service 3 45...

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