Metrohm 942 Extension Module Vario ONE/Deg User manual

942 Extension Module Vario
942 Extension Module Vario ONE/Deg
Manual
8.942.8006EN / 2019-12-19

Metrohm AG
CH-9100 Herisau
Switzerland
Phone [phone]
Fax [phone]
[email protected]
www.metrohm.com
942 Extension Module Vario
942 Extension Module Vario
ONE/Deg
2.942.1060
Manual
8.942.8006EN / 2019-12-19

Technical Communication
Metrohm AG
CH-9100 Herisau
[email protected]
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.

￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭ Table of contents
942 Extension Module Vario ONE/Deg (2.942.1060) ￭￭￭￭￭￭￭￭ III
Table of contents
1 Introduction 1
1.1 Instrument description ......................................................... 1
1.2 Intended use ......................................................................... 2
1.3 About the documentation ................................................... 2
1.3.1 Content and scope .................................................................. 2
1.3.2 Symbols and conventions ........................................................ 3
1.4 Safety instructions ................................................................ 4
1.4.1 General notes on safety ........................................................... 4
1.4.2 Electrical safety ........................................................................ 4
1.4.3 Tubing and capillary connections ............................................. 5
1.4.4 Flammable solvents and chemicals ........................................... 5
1.4.5 Recycling and disposal ............................................................. 5
2 Overview of the instrument 7
2.1 Front ...................................................................................... 7
2.2 Rear ........................................................................................ 8
2.3 Extension Module and 940 Professional IC Vario .............. 9
3 Installation 11
3.1 Setting up the instrument .................................................. 11
3.1.1 Packaging .............................................................................. 11
3.1.2 Checks .................................................................................. 11
3.1.3 Location ................................................................................ 11
3.2 Transport locking screws ................................................... 11
3.3 Base tray and bottle holder ............................................... 12
3.3.1 Basic information on base tray and bottle holder ................... 12
3.3.2 Mounting base tray and bottle holder (optional) .................... 12
3.4 Connecting the eluent bottle ............................................. 17
3.5 Connecting the eluent degasser ........................................ 21
3.5.1 Connecting the vacuum pump(s) ........................................... 21
3.6 Installing the high-pressure pump .................................... 23
3.7 Installing an inline filter ..................................................... 23
3.8 Installing the pulsation absorber ...................................... 24
3.9 Injection valve ..................................................................... 25
3.10 Connecting an Extension Module ..................................... 27
4 Start-up 28

Table of contents ￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭
IV ￭￭￭￭￭￭￭￭ 942 Extension Module Vario ONE/Deg (2.942.1060)
5 Operation and maintenance 29
5.1 Servicing the door .............................................................. 29
5.2 Handling the eluent ............................................................ 29
5.2.1 Manufacturing eluent ............................................................ 29
5.2.2 Changing the eluent .............................................................. 30
5.3 Servicing the eluent degasser ........................................... 30
5.4 Notes on operating the high-pressure pump ................... 31
5.5 Servicing the high-pressure pump .................................... 32
5.6 Servicing the inline filter .................................................... 45
5.7 Servicing the pulsation absorber ...................................... 48
5.8 Inline sample preparation .................................................. 48
5.9 Rinsing the sample path .................................................... 48
5.10 Injection valve ..................................................................... 50
6 Troubleshooting 51
6.1 Problems and their solutions ............................................. 51
7 Technical specifications 53
7.1 Reference conditions .......................................................... 53
7.2 Ambient conditions ............................................................ 53
7.3 Housing ............................................................................... 53
7.4 Weight ................................................................................. 54
7.5 Eluent degasser .................................................................. 54
7.6 Injection valve ..................................................................... 54
7.7 Interfaces ............................................................................. 54
8 Accessories 55
Index 56

￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭ Table of figures
942 Extension Module Vario ONE/Deg (2.942.1060) ￭￭￭￭￭￭￭￭ V
Table of figures
Figure 1 Front ................................................................................................. 7
Figure 2 Rear .................................................................................................. 8
Figure 3 Proposed setup ................................................................................. 9
Figure 4 Removing the base tray ................................................................... 13
Figure 5 Mounting the base tray ................................................................... 14
Figure 6 Removing the bottle holder ............................................................. 15
Figure 7 Mounting the bottle holder ............................................................. 16
Figure 8 Installing the eluent bottle cap ........................................................ 17
Figure 9 Installing tubing weighting and aspiration filter ................................ 19
Figure 10 Connecting the vacuum pump ........................................................ 22
Figure 11 High-pressure pump with purge valve .............................................. 23
Figure 12 Pulsation absorber ........................................................................... 24
Figure 13 Exchanging the sample loop ............................................................ 26
Figure 14 High-pressure pump – Parts ............................................................. 32
Figure 15 High-pressure pump – Cross-section ................................................ 39
Figure 16 Tool for piston seal (6.2617.010) ..................................................... 39
Figure 17 Removing the piston cartridge from the pump head ........................ 40
Figure 18 Inserting the piston seal into the tool ............................................... 41
Figure 19 Parts of the piston cartridge ............................................................ 42
Figure 20 Inline filter – Removing the filter ...................................................... 46

￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭ 1 Introduction
942 Extension Module Vario ONE/Deg (2.942.1060) ￭￭￭￭￭￭￭￭ 1
1 Introduction
1.1 Instrument description
942 Extension Module Vario are extension modules used to expand exist-
ing 940 Professional IC Vario instruments with additional functions. Each
940 Professional IC Vario instrument can be expanded with up to 3 942
Extension Module Vario instruments.
The 942 Extension Module Vario ONE/Deg enables an additional ana-
lysis channel to be installed into a Professional IC system.
With the 942 Extension Module Vario ONE/Deg, a one-channel low-pres-
sure gradient instrument can thus be expanded to a two-channel AnCat
instrument with low-pressure gradient. All instruments with sample prepa-
ration can be expanded to two-channel systems as well.
Use in a system with photometric detection is also possible, with the 942
Extension Module Vario ONE/Deg serving to convey reagents, a 943 Pro-
fessional Thermostat/Reactor Vario as column holder and column thermo-
stat and a 944 Professional UV/VIS Detector Vario.
The 942 Extension Module Vario is operated using MagIC Net software,
just like the IC instrument. If a 942 Extension Module Vario is connected
to a 940 Professional IC Vario instrument, MagIC Net automatically
detects the 942 Extension Module Vario and checks its functional capabil-
ity. It controls and monitors the entire IC system including all connected
instruments; it evaluates the measured data and manages it in a database.
The 942 Extension Module Vario ONE/Deg consists of the following com-
ponents:
Eluent degasser
The eluent degasser removes gas bubbles and dissolved gases from the
eluent.
High-pressure pump
The intelligent and low-pulsation high-pressure pump pumps the eluent
through the IC system. It is equipped with a chip where its technical speci-
fications and "life 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 µm pore size can be
replaced quickly and easily. They remove particles from the solutions, such
as bacteria and algae.

1.2 Intended use ￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭
2￭￭￭￭￭￭￭￭ 942 Extension Module Vario ONE/Deg (2.942.1060)
Pulsation absorber
The pulsation absorber protects the separation column from damage
caused by pressure fluctuations, e.g. when the injection valve is switched,
and reduces interfering pulsations during highly sensitive measurements.
Injection valve
The injection valve connects the eluent path to the sample path. By a
quick and precise switching of the valve, a quantity of sample solution
defined by the size of the sample loop is injected and flushed to the sepa-
ration column with the eluent.
1.2 Intended use
The 942 Extension Module Vario ONE/Deg expands an IC system by an
additional analysis channel.
This instrument is suitable for processing chemicals and flammable sam-
ples. Usage of the 942 Extension Module Vario ONE/Deg therefore
requires the user to have basic knowledge and experience in handling
toxic and caustic substances. Knowledge regarding the application of fire
prevention measures prescribed for laboratories is also mandatory.
1.3 About the documentation
CAUTION
Read through this documentation carefully before putting the instru-
ment into operation. The documentation contains information and
warnings which the user must follow in order to ensure safe operation
of the instrument.
1.3.1 Content and scope
This document describes the 942 Extension Module Vario ONE/Deg
(2.942.1060), its assembly and connection to the IC instrument, as well as
the installation, operation and maintenance of individual components.
Technical specifications, troubleshooting and information concerning
scope of delivery and optional accessories make up the rest of the manual.
However, this document does not describe the functions of a unit combin-
ing a 940 Professional IC Vario and 942 Extension Module Vario ONE/Deg,
nor does it describe the capillary connections that go beyond the 942
Extension Module Vario ONE/Deg. Refer to the manual for the 940 Profes-
sional IC Vario and Sample Processor in this regard.

￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭ 1 Introduction
942 Extension Module Vario ONE/Deg (2.942.1060) ￭￭￭￭￭￭￭￭ 3
Additional information concerning the configuration of MagIC Net can be
found in the online help for MagIC Net.
1.3.2 Symbols and conventions
The following symbols and formatting may appear in this documentation:
Cross-reference to figure legend
The first number refers to the figure number, the sec-
ond to the instrument part in the figure.
Instruction step
Carry out these steps in the sequence shown.
Method Dialog text, parameter in the software
File ▶ New Menu or menu item
[Next] Button or key
WARNING
This symbol draws attention to a possible life-threat-
ening hazard or risk of injury.
WARNING
This symbol draws attention to a possible hazard due
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 symbol draws attention to possible damage to
instruments or instrument parts.
NOTE
This symbol highlights additional information and
tips.

1.4 Safety instructions ￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭
4￭￭￭￭￭￭￭￭ 942 Extension Module Vario ONE/Deg (2.942.1060)
1.4 Safety instructions
1.4.1 General notes on safety
WARNING
Operate this instrument only according to the information contained in
this documentation.
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.
1.4.2 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. There is also a risk of serious injury if live components
are touched.
There are no parts inside the housing which can be serviced or replaced
by the user.
Supply voltage
WARNING
An incorrect supply voltage can damage the instrument.
Only operate this instrument with a supply voltage specified for it (see
rear panel of the instrument).

￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭ 1 Introduction
942 Extension Module Vario ONE/Deg (2.942.1060) ￭￭￭￭￭￭￭￭ 5
Protection against 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
set up or disconnect electrical plug connections at the rear of the
instrument.
1.4.3 Tubing and capillary connections
CAUTION
Leaks in tubing and capillary connections are a safety risk. Tighten all
connections well by hand. Avoid applying excessive force to tubing con-
nections. Damaged tubing ends lead to leakage. Appropriate tools can
be used to loosen connections.
Check the connections regularly for leakage. If the instrument is used
mainly in unattended operation, then weekly inspections are manda-
tory.
1.4.4 Flammable solvents and chemicals
WARNING
All relevant safety measures are to be observed when working with
flammable solvents and chemicals.
￭Set up the instrument in a well-ventilated location (e.g. fume cup-
board).
￭Keep all sources of flame far from the workplace.
￭Clean up spilled liquids and solids immediately.
￭Follow the safety instructions of the chemical manufacturer.
1.4.5 Recycling and disposal
This product is covered by European Directive 2012/19/EU, WEEE – Waste
Electrical and Electronic Equipment.
The correct disposal of your old instrument will help to prevent negative
effects on the environment and public health.

1.4 Safety instructions ￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭
6￭￭￭￭￭￭￭￭ 942 Extension Module Vario ONE/Deg (2.942.1060)
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.

￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭ 2 Overview of the instrument
942 Extension Module Vario ONE/Deg (2.942.1060) ￭￭￭￭￭￭￭￭ 7
2 Overview of the instrument
2.1 Front
Figure 1 Front
1High-pressure pump
See Chapter 3.6.
2Eluent degasser
See Chapter 3.5.
3Inline filter
See Chapter 3.7.
4Injection valve
See Chapter 3.9.
5Pulsation absorber
See Chapter 3.8.
6Purge valve
See Chapter 3.6.
7Coupling (6.2744.230)
For connecting the eluent aspiration tubing.
8Standby indicator

2.2 Rear ￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭
8￭￭￭￭￭￭￭￭ 942 Extension Module Vario ONE/Deg (2.942.1060)
2.2 Rear
Vacuum Exhaust
Made by Metrohm Herisau Switzerland
Out
In
Transport locking screws
1234
5
Figure 2 Rear
1"In" connection
For connecting the Extension Module to the
IC instrument or to a previous Extension
Module.
2"Out" connection
For connecting an additional Extension
Module.
3"Vacuum" connection
For connecting additional degassing cham-
bers in extension modules.
4Exhaust opening
For extracting the air from the vacuum
chamber. Labeled Exhaust.
5Transport locking screws
For securing the high-pressure pump and
the vacuum pump when transporting the
instrument.

￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭ 2 Overview of the instrument
942 Extension Module Vario ONE/Deg (2.942.1060) ￭￭￭￭￭￭￭￭ 9
2.3 Extension Module and 940 Professional IC Vario
The 942 Extension Module Vario units are fitted directly to the 940 Profes-
sional IC Vario and connected to it via the connection cable provided.
Extension modules have no power supply of their own, but rather draw
the electricity they require from the instrument to which they are con-
nected.
Extension modules can be placed in 3 different ways:
￭Installed between the instrument and bottle holder (3-A).
￭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.
Figure 3 Proposed setup
AExtension module on top
Between the 940 Professional IC Vario and
the bottle holder.
BExtension module below
Between the base plate and the 940 Profes-
sional IC Vario.
CExtension module separately
Next to the 940 Professional IC Vario with its
own base plate and bottle holder.
Up to three extension modules can be connected to an 940 Professional
IC Vario. The following restrictions are to be taken into account:
Restrictions Together, the 940 Professional IC Vario and its extension modules must
not contain more than 4 identical components, this means that:
￭A maximum of 4 high-pressure pumps,
￭A maximum of 4 peristaltic pumps,
￭A maximum of 4 injection valves,
￭A maximum of 4 suppressors (MSM, incl. SPM),
BUT

2.3 Extension Module and 940 Professional IC Vario ￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭
10 ￭￭￭￭￭￭￭￭ 942 Extension Module Vario ONE/Deg (2.942.1060)
￭Only a maximum of 3 degassers
￭And a maximum of 3 CO2 suppressors (MCS)
NOTICE
If all four high-pressure pumps are being used simultaneously, then all
of them must not be operating with their maximum flow for long peri-
ods.
Position the Extension Module in such a way that the capillary connections
can be kept as short as possible. If several extension modules are being
used, they should all be installed at the same location above or below
each other. If this is not possible, extension modules that are farther apart
have to be connected together using a longer connecting cable
(6.2156.070).

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942 Extension Module Vario ONE/Deg (2.942.1060) ￭￭￭￭￭￭￭￭ 11
3 Installation
3.1 Setting up the instrument
3.1.1 Packaging
The instrument is supplied in protective packaging together with the sepa-
rately packed accessories. Keep this packaging, as only this ensures safe
transportation of the instrument.
3.1.2 Checks
Immediately after receipt, check whether the shipment has arrived com-
plete and without damage by comparing it with the delivery note.
3.1.3 Location
The instrument has been developed for operation indoors and may not be
used in explosive environments.
Place the instrument in a location of the laboratory which is suitable for
operation and free of vibrations and which provides protection against
corrosive atmosphere and contamination by chemicals.
The instrument should be protected against excessive temperature fluctua-
tions and direct sunlight.
3.2 Transport locking screws
To avoid damage to the drives for the high-pressure pump and the vac-
uum pump during transport, the pumps are secured with transport locking
screws. These are located at the rear of the instrument 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 locking screws
1Remove 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.

3.3 Base tray and bottle holder ￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭
12 ￭￭￭￭￭￭￭￭ 942 Extension Module Vario ONE/Deg (2.942.1060)
CAUTION
The pumps may be damaged if you transport the instrument without
inserting the transport locking screws.
3.3 Base tray and bottle holder
3.3.1 Basic information on base tray and bottle holder
The base tray (6.2061.110) and bottle holder (6.2061.100) protect IC
instruments from dust, dirt and leaking fluids. The supply bottles for eluent
and auxiliary solutions can be positioned neatly on the bottle holder.
In a complex IC system, several different instruments may be used, such as
an analyzer, an extension module and a detector. These instruments can
be set up in one or more stacks. We recommend that a base tray and bot-
tle holder be mounted for each stack of IC instruments.
The bottle holder and base tray must be removed or set up if one of the
following instruments is to be mounted on or under a 940 Professional IC
Vario:
￭One or more 942 Extension Module Vario
￭Or another instrument with the same-sized footprint
3.3.2 Mounting base tray and bottle holder (optional)
The base tray and bottle holder come fully assembled on a new ion chro-
matograph. To install an Extension Module on the ion chromatograph,
remove the bottle holder and put it back on top of the topmost instru-
ment. To install an Extension Module under the ion chromatograph,
remove the base tray and set it under the lowest instrument.
3.3.2.1 Removing/mounting the base tray
Remove the base tray to install another instrument under the IC instru-
ment.