Metrohm 942 Extension Module Vario SeS/PP User manual

942 Extension Module Vario SeS/PP
942 Extension Module Vario SeS/PP
Manual
8.942.8005EN / 2019-12-11

Metrohm AG
CH-9100 Herisau
Switzerland
Phone [phone]
Fax [phone]
[email protected]
www.metrohm.com
942 Extension Module Vario SeS/PP
942 Extension Module Vario SeS/PP
2.942.0500
Manual
8.942.8005EN / 2019-12-11

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 SeS/PP (2.942.0500) ￭￭￭￭￭￭￭￭ 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 ........................................................ 2
1.4 Safety instructions ................................................................ 3
1.4.1 General notes on safety ........................................................... 3
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 6
2.1 Front ...................................................................................... 6
2.2 Rear ........................................................................................ 7
2.3 Extension Module and 940 Professional IC Vario .............. 7
3 Installation 9
3.1 Setting up the instrument .................................................... 9
3.1.1 Packaging ................................................................................ 9
3.1.2 Checks .................................................................................... 9
3.1.3 Location .................................................................................. 9
3.2 Transport locking screws ..................................................... 9
3.3 Base tray and bottle holder ............................................... 10
3.3.1 Basic information on base tray and bottle holder ................... 10
3.3.2 Mounting base tray and bottle holder (optional) .................... 10
3.4 Peristaltic pump .................................................................. 15
3.4.1 Installing the peristaltic pump ................................................ 15
3.4.2 Mode of operation for the peristaltic pump ........................... 20
3.5 Metrohm Suppressor Module (MSM) ............................... 21
3.5.1 Inserting the rotors ................................................................ 21
3.5.2 Connecting the Metrohm Suppressor Module (MSM) ............. 23
3.6 Metrohm CO2 Suppressor (MCS) ....................................... 28
3.6.1 General information on the MCS ........................................... 28
3.6.2 Connecting the MCS ............................................................. 29
3.6.3 Installing adsorption cartridges .............................................. 30
3.7 Connecting an Extension Module ..................................... 33

Table of contents ￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭
IV ￭￭￭￭￭￭￭￭ 942 Extension Module Vario SeS/PP (2.942.0500)
4 Start-up 35
5 Operation and maintenance 36
5.1 Servicing the door .............................................................. 36
5.2 Peristaltic pump .................................................................. 36
5.2.1 Notes on operating the peristaltic pump ................................ 36
5.2.2 Servicing the peristaltic pump ................................................ 37
5.3 Metrohm Suppressor Module (MSM) ............................... 38
5.3.1 Notes for operating the Metrohm Suppressor Module
(MSM) ................................................................................... 38
5.3.2 Taking care of the suppressor housing ................................... 39
5.3.3 Servicing the Metrohm Suppressor Module (MSM) ................. 39
5.4 Servicing the Metrohm CO2 Suppressor (MCS) ................ 48
5.4.1 Replacing the CO2 adsorption cartridge CW ........................... 48
6 Troubleshooting 49
6.1 Problems and their solutions ............................................. 49
7 Technical specifications 51
7.1 Reference conditions .......................................................... 51
7.2 Ambient conditions ............................................................ 51
7.3 Housing ............................................................................... 51
7.4 Weight ................................................................................. 52
7.5 Peristaltic pump .................................................................. 52
7.6 Metrohm Suppressor Module (MSM) ............................... 52
7.7 Metrohm CO2 Suppressor (MCS) ....................................... 52
7.8 Interfaces ............................................................................. 53
8 Accessories 54
Index 55

￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭ Table of figures
942 Extension Module Vario SeS/PP (2.942.0500) ￭￭￭￭￭￭￭￭ V
Table of figures
Figure 1 Front ................................................................................................. 6
Figure 2 Rear .................................................................................................. 7
Figure 3 Proposed setup ................................................................................. 8
Figure 4 Removing the base tray ................................................................... 11
Figure 5 Mounting the base tray ................................................................... 12
Figure 6 Removing the bottle holder ............................................................. 13
Figure 7 Mounting the bottle holder ............................................................. 14
Figure 8 Peristaltic pump ............................................................................... 21
Figure 9 Metrohm Suppressor Module (MSM) – Connection capillaries .......... 24
Figure 10 Connecting the MCS ....................................................................... 29
Figure 11 Pump tubing connection – Replacing the filter ................................. 38
Figure 12 Parts of the Metrohm Suppressor Module (MSM) ............................ 40

￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭ 1 Introduction
942 Extension Module Vario SeS/PP (2.942.0500) ￭￭￭￭￭￭￭￭ 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 SeS/PP can be used in IC systems
where an additional module for sequential suppression is needed.
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 SeS/PP consists of the following compo-
nents:
Peristaltic pump
The peristaltic pump is used for pumping sample and auxiliary solutions. It
can rotate in both directions.
Metrohm Suppressor Module (MSM)
The chemical suppressor MSM consists of the suppressor drive, a rotor
and, where applicable, an adapter. The suppressor drive gives you the flex-
ibility to use different rotors according to the principle "one drive – many
rotors". Suppression rotors with different capacities and construction or a
rotor for sample preparation (SPM Rotor) are readily interchangeable with
appropriate adapters as needed. The rotors are not included in the instru-
ment's scope of delivery. The rotor required for the application and any
adapter that is required must be ordered separately.
Metrohm CO2 Suppressor (MCS)
The Metrohm CO2 Suppressor (MCS) removes the CO2 from the eluent
stream. This lowers the background conductivity, improves detection sen-
sitivity and minimizes the injection peak and system peak.

1.2 Intended use ￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭
2￭￭￭￭￭￭￭￭ 942 Extension Module Vario SeS/PP (2.942.0500)
1.2 Intended use
The 942 Extension Module Vario SeS/PP adds a module for sequential sup-
pression to an IC system.
This instrument is suitable for processing chemicals and flammable sam-
ples. Usage of the 942 Extension Module Vario therefore requires the user
to have basic knowledge and experience in handling toxic and caustic
substances. Knowledge regarding the application of fire prevention meas-
ures 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 SeS/PP
(2.942.0500), its assembly and connection to the IC instrument, as well as
the installation, operation and maintenance of individual components.
Information on technical specifications, troubleshooting, the 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, nor does
it describe the capillary connections that go beyond the 942 Extension
Module Vario. Refer to the manual for the 940 Professional IC Vario and
Sample Processor in this regard.
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.

￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭ 1 Introduction
942 Extension Module Vario SeS/PP (2.942.0500) ￭￭￭￭￭￭￭￭ 3
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
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 Safety instructions ￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭
4￭￭￭￭￭￭￭￭ 942 Extension Module Vario SeS/PP (2.942.0500)
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).
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 Introduction
942 Extension Module Vario SeS/PP (2.942.0500) ￭￭￭￭￭￭￭￭ 5
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.
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.

2.1 Front ￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭
6￭￭￭￭￭￭￭￭ 942 Extension Module Vario SeS/PP (2.942.0500)
2 Overview of the instrument
2.1 Front
Figure 1 Front
1Peristaltic pump
(see chapter 3.4.1, page 15).
2MCS
(see chapter 3.6, page 28).
3Suppressor drive
(see chapter 3.4.1, page 15).
4Standby indicator

￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭ 2 Overview of the instrument
942 Extension Module Vario SeS/PP (2.942.0500) ￭￭￭￭￭￭￭￭ 7
2.2 Rear
1
2 3 4
Figure 2 Rear
1Exhaust opening
For extracting the air from the vacuum
chamber. Labeled Exhaust.
2Transport locking screws
For securing the vacuum pump when trans-
porting the instrument.
3"In" connection
To connect the Extension Module to the IC
instrument or to a previous Extension Mod-
ule.
4"Out" connection
To connect an additional Extension Module.
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.

2.3 Extension Module and 940 Professional IC Vario ￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭
8￭￭￭￭￭￭￭￭ 942 Extension Module Vario SeS/PP (2.942.0500)
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
￭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).

￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭ 3 Installation
942 Extension Module Vario SeS/PP (2.942.0500) ￭￭￭￭￭￭￭￭ 9
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 vacuum pump drive during transport, the pump is
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 ￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭
10 ￭￭￭￭￭￭￭￭ 942 Extension Module Vario SeS/PP (2.942.0500)
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.

￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭ 3 Installation
942 Extension Module Vario SeS/PP (2.942.0500) ￭￭￭￭￭￭￭￭ 11
CAUTION
Do not pinch capillaries or leak sensor cables
Capillaries are fed through the guide ducts between the base tray and
the instrument. Pinches in the leak sensor cable or the capillaries may
lead to malfunctions.
￭Unplug the leak sensor cable before you remove the base tray.
￭Remove all the capillaries from the capillary ducts before you remove
the base tray.
Removing the base tray
Prerequisites
￭The instrument is switched off.
￭The bottle holder is cleared.
￭All of the cable connections on the rear have been disconnected.
￭The capillaries are removed from the guide ducts between the instru-
ment and the base tray.
￭There are no loose parts in the instrument.
Accessories
￭3 mm hex key (6.2621.100)
123
Figure 4 Removing the base tray
1Tilt the instrument sideways and lay it down flat.
2Loosen the 4 cylinder screws with the 3 mm hex key. Remove the cyl-
inder screws and their washers.

3.3 Base tray and bottle holder ￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭
12 ￭￭￭￭￭￭￭￭ 942 Extension Module Vario SeS/PP (2.942.0500)
3Remove the base tray.
Always mount the base tray under the lowermost instrument of the stack.
Mounting the base tray
Prerequisites
￭The instrument is switched off.
￭The bottle holder is cleared.
￭All of the cable connections on the rear have been disconnected.
￭There are no loose parts in the instrument.
￭The instrument is lying on its side, and the bottom surface is visible.
Accessories
￭3 mm hex key (6.2621.100)
13
2
Figure 5 Mounting the base tray
1Mount the base tray in such a way that the openings in the base tray
match exactly the screw threads in the bottom of the instrument.
2Slide the washers onto the cylinder screws. Insert the cylinder screws
with the washers and tighten them with the 3 mm hex key.
3Set 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 13).