Metrohm 942 Extension Module Vario HPG Manual
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Metrohm 942 Extension Module Vario HPG Manual

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942 Extension Module Vario
942 Extension Module Vario HPG
Manual
8.942.8002EN / 2020-03-17

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Summary of Contents for Metrohm 942 Extension Module Vario HPG

  • Page 1 942 Extension Module Vario 942 Extension Module Vario HPG Manual 8.942.8002EN / 2020-03-17...
  • Page 3 Metrohm AG CH-9100 Herisau Switzerland Phone +41 71 353 85 85 Fax +41 71 353 89 01 info@metrohm.com www.metrohm.com 942 Extension Module Vario 942 Extension Module Vario HPG 2.942.0040 Manual 8.942.8002EN / 2020-03-17...
  • Page 4 Technical Communication Metrohm AG CH-9100 Herisau techcom@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 comments regarding possible errors to the address above.

  • Page 5: Table Of Contents

    Connecting the vacuum pump(s) ........... 20 Installing the high-pressure pump ........22 Installing an inline filter ............. 22 Installing the pulsation absorber ........23 3.10 Connecting an Extension Module ........24 4 Start-up ￭￭￭￭￭￭￭￭ 942 Extension Module Vario HPG (2.942.0040)
  • Page 6 Problems and their solutions ..........46 7 Technical specifications Reference conditions ............48 Ambient conditions ............48 Housing ................48 Weight ................. 48 Eluent degasser ..............49 Interfaces ................49 8 Accessories Index ￭￭￭￭￭￭￭￭ 942 Extension Module Vario HPG (2.942.0040)
  • Page 7 Removing the piston cartridge from the pump head ......37 Figure 18 Inserting the piston seal into the tool ..........38 Figure 19 Parts of the piston cartridge ............39 Figure 20 Inline filter – Removing the filter ............43 ￭￭￭￭￭￭￭￭ 942 Extension Module Vario HPG (2.942.0040)

  • Page 9: Introduction

    The 942 Extension Module Vario HPG enables an additional "iPump" IC high-pressure pump to be installed into a Professional IC system. Thanks to the 942 Extension Module Vario HPG, an isocratic 940 Profes- sional IC Vario system can be expanded into a quaternary high-pressure gradient system.

  • Page 10: Intended Use

    However, this document does not describe the functions of a unit combin- ing a 940 Professional IC Vario and 942 Extension Module Vario HPG, nor does it describe the capillary connections that go beyond the 942 Exten- sion Module Vario HPG.

  • Page 11: Safety Instructions

    This instrument left the factory in a flawless state in terms of technical safety. To maintain this state and ensure non-hazardous operation of the instrument, the following instructions must be observed carefully. ￭￭￭￭￭￭￭￭ 942 Extension Module Vario HPG (2.942.0040)

  • Page 12: Electrical Safety

    The electrical safety when working with the instrument is ensured as part of the international standard IEC 61010. WARNING Only personnel qualified by Metrohm are authorized to carry out service work on electronic components. WARNING Never open the housing of the instrument. The instrument could be damaged by this.

  • Page 13: Tubing And Capillary Connections

    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 from your local authorities, from waste disposal companies or from your local dealer. ￭￭￭￭￭￭￭￭ 942 Extension Module Vario HPG (2.942.0040)

  • Page 14: Overview Of The Instrument

    Eluent degasser See Chapter 3.7. See Chapter 3.6. Inline filter Pulsation absorber See Chapter 3.8. See Chapter 3.9. Purge valve Coupling (6.2744.230) See Chapter 3.7. For connecting the eluent aspiration tubing. Standby indicator ￭￭￭￭￭￭￭￭ 942 Extension Module Vario HPG (2.942.0040)

  • Page 15: Rear

    Installed between the instrument and base tray (3-B). ￭ Stacked next to the instrument (3-C). In this case, we recommend ￭ ordering a separate base tray (6.2061.110) and a separate bottle holder (6.2061.100) for the stack. ￭￭￭￭￭￭￭￭ 942 Extension Module Vario HPG (2.942.0040)

  • Page 16: Figure 3 Proposed Setup

    If this is not possible, extension modules that are farther apart have to be connected together using a longer connecting cable (6.2156.070). ￭￭￭￭￭￭￭￭ 942 Extension Module Vario HPG (2.942.0040)

  • Page 17: Installation

    3 Installation 3 Installation Installation diagram The 942 Extension Module Vario HPG can be used as an additional pump for a high-pressure gradient system, for example. Figure : High-pressure gradient system shows the capillary connections of the 942 Extension Module Vario HPG used as part of a high-pressure gra- dient system.

  • Page 18: Setting Up The Instrument

    1 Remove all of the transport locking screws with the hex key. Store the transport locking screws in a safe place. Reinsert the transport locking screws each time you transport the instrument a significant dis- tance. ￭￭￭￭￭￭￭￭ 942 Extension Module Vario HPG (2.942.0040)

  • Page 19: Base Tray And Bottle Holder

    To install an Extension Module under the ion chromatograph, remove the base tray and set it under the lowest instrument. 3.4.2.1 Removing/mounting the base tray Remove the base tray to install another instrument under the IC instru- ment. ￭￭￭￭￭￭￭￭ 942 Extension Module Vario HPG (2.942.0040)

  • Page 20: Figure 5 Removing The Base Tray

    Removing the base tray 1 Tilt the instrument sideways and lay it down flat. 2 Loosen the 4 cylinder screws with the 3 mm hex key. Remove the cyl- inder screws and their washers. ￭￭￭￭￭￭￭￭ 942 Extension Module Vario HPG (2.942.0040)

  • Page 21: Figure 6 Mounting The Base Tray

    3 Set the instrument back up on the base tray. Stack other instruments in the required order. Mount the bottle holder (6.2061.100) onto the topmost instrument on the stack (see "Mounting the bottle holder", page 14). ￭￭￭￭￭￭￭￭ 942 Extension Module Vario HPG (2.942.0040)

  • Page 22: Figure 7 Removing The Bottle Holder

    2 Loosen the 2 cylinder screws with the 3 mm hex key and remove them. 3 Remove the bottle holder. Stack other instruments in the required order. Mount the bottle holder (6.2061.100) onto the topmost instrument on the stack. Mounting the bottle holder Prerequisite ￭￭￭￭￭￭￭￭ 942 Extension Module Vario HPG (2.942.0040)

  • Page 23: Figure 8 Mounting The Bottle Holder

    4 Mount the drainage tubing again (see manual of the IC instrument). A longer section of silicone tubing (6.1816.020) may have to be cut to size and mounted (see also the manual for the IC instrument). ￭￭￭￭￭￭￭￭ 942 Extension Module Vario HPG (2.942.0040)

  • Page 24: Connecting The Eluent Bottle

    Push the loose end of the eluent aspiration tubing through the ￭ M8 opening of the bottle cap and screw it on for the time being. Figure 9 Installing the eluent bottle cap ￭￭￭￭￭￭￭￭ 942 Extension Module Vario HPG (2.942.0040)
  • Page 25 Place the loose end of the eluent aspiration tubing into the aspira- ￭ tion filter. The end of the tubing should reach approximately to the center of the aspiration filter. Tighten the aspiration filter to the filter holder. ￭ ￭￭￭￭￭￭￭￭ 942 Extension Module Vario HPG (2.942.0040)

  • Page 26: Figure 10 Installing Tubing Weighting And Aspiration Filter

    Then fix it in place using the M8 tubing nipple. Seal the M6 opening on the bottle cap with the M6 threaded ￭ stopper from the accessory set. ￭￭￭￭￭￭￭￭ 942 Extension Module Vario HPG (2.942.0040)
  • Page 27 Fill the adsorber tube and close it again using the plastic cover. Insert the adsorber tube into the bottle cap's large opening. Fas- ￭ ten it to the bottle cap using the SGJ clip (6.2023.020). ￭￭￭￭￭￭￭￭ 942 Extension Module Vario HPG (2.942.0040)

  • Page 28: Connecting The Eluent Degasser

    3.6.1 Connecting the vacuum pump(s) The 942 Extension Module Vario HPG has no vacuum pump of its own. In order for the eluent degasser to be used, the Extension Module has to be connected to the IC instrument's vacuum pump.

  • Page 29: Figure 11 Connecting The Vacuum Pump

    3 Connect one end of the FEP tubing (6.1805.060) (11-3) to the third output of the T connector (6.1808.060). Connect the other end of the FEP tubing to the IC instrument's Vac- uum connector. ￭￭￭￭￭￭￭￭ 942 Extension Module Vario HPG (2.942.0040)

  • Page 30: Installing The High-Pressure Pump

    The small filter pads with 2 µm pore size can be replaced quickly and easily. They remove particles from the solutions. The inline filter is completely connected. No installation work is required. ￭￭￭￭￭￭￭￭ 942 Extension Module Vario HPG (2.942.0040)

  • Page 31: Installing The Pulsation Absorber

    1 Unscrew the threaded stopper from the outlet of the pulsation absorber. 2 Screw one end of the capillary (6.1831.010) to the outlet of the pul- sation absorber using a short pressure screw (6.2744.070). ￭￭￭￭￭￭￭￭ 942 Extension Module Vario HPG (2.942.0040)

  • Page 32: Connecting An Extension Module

    (6.2156.070) into the In connection socket on the second Extension Module and tighten it in place. 2 Plug the other end of the connecting cable into the Out connection socket on the first Extension Module and tighten it in place. ￭￭￭￭￭￭￭￭ 942 Extension Module Vario HPG (2.942.0040)

  • Page 33: Start-Up

    ￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭ 4 Start-up 4 Start-up The 942 Extension Module Vario HPG is put into operation together with the IC instrument. The following preconditions must be met before initial start-up: The eluent bottle is filled and connected. ￭ The 942 Extension Module Vario HPG is connected to the 940 Profes- ￭...

  • Page 34: Operation And Maintenance

    "p.a.". They may be diluted only by using ultrapure water (resistance > 18.2 MΩ*cm). (These specifications apply generally for all reagents used in ion chromatography.) Newly manufactured eluents always need to be microfiltered (0.45 µm fil- ter). ￭￭￭￭￭￭￭￭ 942 Extension Module Vario HPG (2.942.0040)

  • Page 35: Changing The Eluent

    For this step, you need the following accessories: Wrench (6.2621.050) ￭ Loosening the connecting tubing Loosen the clamping screws with the wrench. ￭ Unscrew the clamping screws by hand and pull them out of the ￭ connector. ￭￭￭￭￭￭￭￭ 942 Extension Module Vario HPG (2.942.0040)

  • Page 36: Notes On Operating The High-Pressure Pump

    In order to protect the pump seals, ensure that the pump is never oper- ￭ ated dry. Therefore ensure that the eluent supply is correctly connected and that there is enough eluent in the eluent bottle each time before turning on the pump. ￭￭￭￭￭￭￭￭ 942 Extension Module Vario HPG (2.942.0040)

  • Page 37: Servicing The High-Pressure Pump

    5 Operation and maintenance Servicing the high-pressure pump NOTICE 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/. Figure 14 High-pressure pump – Parts Pressure screw, short (6.2744.070) Outlet valve holder Fastened to the outlet valve holder.
  • Page 38 You can find brief video sequences on the following maintenance steps on the Internet at http://ic-help.metrohm.com/. Servicing the outlet valve and inlet valve Accessories For this step, you need the following accessories: Adjustable wrench (6.2621.000) ￭ ￭￭￭￭￭￭￭￭ 942 Extension Module Vario HPG (2.942.0040)
  • Page 39 RBS™ solution or acetone. The rinsing solution may only come out at the valve outlet. The outlet valve must be replaced if it is still clogged after cleaning. ￭￭￭￭￭￭￭￭ 942 Extension Module Vario HPG (2.942.0040)
  • Page 40 ¼ turn using the adjustable wrench (3). Tighten the connection capillary to the auxiliary piston back onto ￭ the outlet valve holder. ￭￭￭￭￭￭￭￭ 942 Extension Module Vario HPG (2.942.0040)
  • Page 41 RBS™ solution or acetone. The rinsing solution may only come out at the valve outlet. The inlet valve must be replaced if it is still clogged after cleaning. ￭￭￭￭￭￭￭￭ 942 Extension Module Vario HPG (2.942.0040)
  • Page 42 For this step, you need the following accessories: 4 mm hex key (6.2621.030) ￭ Removing the pump head Prerequisites: Is the high-pressure pump switched off? ￭ Has the pressure been released? ￭ Is the instrument switched off? ￭ ￭￭￭￭￭￭￭￭ 942 Extension Module Vario HPG (2.942.0040)
  • Page 43 Servicing the piston Carry out the following work on both pistons in turn. Servicing a piston consists of the following tasks: Replace the piston seal. Clean or replace the zirconium oxide piston. Reinstall the piston. ￭￭￭￭￭￭￭￭ 942 Extension Module Vario HPG (2.942.0040)

  • Page 44: Figure 15 High-Pressure Pump - Cross-Section

    (16-2) for inserting the new piston seal. Figure 16 Tool for piston seal (6.2617.010) Sleeve Spare part For this step, you need a new piston seal (6.2741.020). ￭￭￭￭￭￭￭￭ 942 Extension Module Vario HPG (2.942.0040)

  • Page 45: Figure 17 Removing The Piston Cartridge From The Pump Head

    Avoid touching the sealing surface in the pump head with the tool! Only screw the tip (16-1) of the tool for the piston seal far enough into the piston seal that the seal can be pulled out. ￭￭￭￭￭￭￭￭ 942 Extension Module Vario HPG (2.942.0040)

  • Page 46: Figure 18 Inserting The Piston Seal Into The Tool

    The pump head has been removed (see "Removing the pump head", ￭ page 34). The piston cartridge is removed (see "Replacing the piston seal", page ￭ 37). For this task, you need the following accessories: Zirconium oxide piston (6.2824.070) ￭ ￭￭￭￭￭￭￭￭ 942 Extension Module Vario HPG (2.942.0040)

  • Page 47: Figure 19 Parts Of The Piston Cartridge

    The zirconium oxide piston must be replaced if it is heavily con- taminated or scratched. ￭￭￭￭￭￭￭￭ 942 Extension Module Vario HPG (2.942.0040)
  • Page 48 15°. Clean the second piston cartridge in the same way. Mounting the pump head Accessories For this step, you need the following accessories: 4 mm hex key (6.2621.030) ￭ ￭￭￭￭￭￭￭￭ 942 Extension Module Vario HPG (2.942.0040)
  • Page 49 The bore hole with the greatest depth must therefore be aligned with the longest bolt. Push the pump head onto the four fastening bolts (1). ￭ Tighten the four fastening screws using the hex key (6.2621.030) ￭ alternating crosswise. ￭￭￭￭￭￭￭￭ 942 Extension Module Vario HPG (2.942.0040)

  • Page 50: Servicing The Inline Filter

    Servicing the inline filter NOTICE 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 filter must be replaced at least every 3 months; it may need to be replaced more frequently, depending on the application.

  • Page 51: Figure 20 Inline Filter - Removing The Filter

    3 Unscrewing the filter screw Use two adjustable wrenches (6.2621.000) to loosen the filter screw (20-2) from the filter housing (20-1) and unscrew it by hand. 4 Removing the filter Remove the old filter (20-3) using tweezers. ￭￭￭￭￭￭￭￭ 942 Extension Module Vario HPG (2.942.0040)
  • Page 52 4 Rinsing the inline filter Dismantle the guard column (if present) and the separation col- ￭ umn and replace with a coupling (6.2744.040). Rinse the instrument with eluent. ￭ Reinsert the columns after 10 minutes. ￭ ￭￭￭￭￭￭￭￭ 942 Extension Module Vario HPG (2.942.0040)

  • Page 53: Servicing The Pulsation Absorber

    ￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭ 5 Operation and maintenance Servicing the pulsation absorber CAUTION The pulsation absorber is maintenance-free and must not be opened. ￭￭￭￭￭￭￭￭ 942 Extension Module Vario HPG (2.942.0040)

  • Page 54: Troubleshooting

    High-pressure pump – Request Metrohm Service. unexpectedly. Defective. The background The incorrect eluent is Change the eluent (see chapter 5.2.2, page conductivity is too being used. 27). high. ￭￭￭￭￭￭￭￭ 942 Extension Module Vario HPG (2.942.0040)
  • Page 55 (tightly) sealed. Connect FEP tubing between the IC instru- ￭ ment and the Extension Module and tighten both clamping screws until they form a seal (see chapter 3.6.1, page 20). ￭￭￭￭￭￭￭￭ 942 Extension Module Vario HPG (2.942.0040)

  • Page 56: Technical Specifications

    365 mm Height 131 mm Depth 380 mm Material of base Polyurethane hard foam (PUR) with flame retardation for fire class tray, housing and UL94V0, CFC-free, coated bottle holder Weight 2.942.0040 9.42 kg ￭￭￭￭￭￭￭￭ 942 Extension Module Vario HPG (2.942.0040)

  • Page 57: Eluent Degasser

    Connection to the ion chromatograph or another Extension Module. 1 15-pin D-sub plug (female) Connection to another Extension Module or an 891 Professional Ana- log Out (optional). Vacuum in Connection to the vacuum pump of the ion chromatograph. ￭￭￭￭￭￭￭￭ 942 Extension Module Vario HPG (2.942.0040)

  • Page 58: Accessories

    The PDF file with the accessories data is created. NOTICE Once you have received your new product, we recommend download- ing the accessories list from the Internet, printing it out and keeping it together with the manual for reference purposes. ￭￭￭￭￭￭￭￭ 942 Extension Module Vario HPG (2.942.0040)

  • Page 59: Index

    High-pressure pump ... 29 Vacuum pump ......20 Eluent Material ........48 Protection ......11 Aspirate ......16 Change ......27 Nominal function range .... 48 Manufacturing ....26 Eluent bottle Installation ......16 ￭￭￭￭￭￭￭￭ 942 Extension Module Vario HPG (2.942.0040)

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