Metrohm 869 User manual

869 Compact Sample Changer
Manual
8.869.8002EN / 2019-12-06

Metrohm AG
CH-9100 Herisau
Switzerland
Phone [phone]
Fax [phone]
[email protected]
www.metrohm.com
869 Compact Sample Changer
Manual
8.869.8002EN / 2019-12-06

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
869 Compact Sample Changer ￭￭￭￭￭￭￭￭ III
Table of contents
1 Introduction 1
1.1 Instrument description ......................................................... 1
1.1.1 Instrument components ........................................................... 1
1.1.2 Intended use ........................................................................... 1
1.2 About the documentation ................................................... 2
1.2.1 Symbols and conventions ........................................................ 2
1.3 Safety instructions ................................................................ 3
1.3.1 General notes on safety ........................................................... 3
1.3.2 Electrical safety ........................................................................ 3
1.3.3 Tubing and capillary connections ............................................. 4
1.3.4 Personnel safety ....................................................................... 4
1.3.5 Flammable solvents and chemicals ........................................... 5
1.3.6 Danger from biological substances .......................................... 5
1.3.7 Recycling and disposal ............................................................. 6
2 Overview of the instrument 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 Removing the safety shield and cable guide ...................... 9
3.3 Setting up the titration head ............................................. 10
3.4 Connecting the stirrer ........................................................ 13
3.5 Connecting a keyboard, printer and other USB devi-
ces ........................................................................................ 14
3.6 Remote connections ........................................................... 16
3.6.1 Miscellaneous remote cables ................................................. 16
3.6.2 Example systems .................................................................... 17
3.7 Connecting the instrument to the power grid ................. 23
3.8 Mounting the cable guide and the safety shield ............. 24
4 Automation runs 26
4.1 Dipping in special ............................................................... 26
4.2 Dipping in special 2 ............................................................ 27
4.3 Double dipping ................................................................... 28
4.4 Rinsing in sample ................................................................ 29

Table of contents ￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭
IV ￭￭￭￭￭￭￭￭ 869 Compact Sample Changer
4.5 Rinsing in special ................................................................ 30
4.6 Pump control ...................................................................... 31
4.7 Dosing auxiliary solutions .................................................. 31
5 Operation 32
5.1 Switching the instrument on and off ................................ 32
5.2 Fundamentals of operation ............................................... 33
5.2.1 The keypad ............................................................................ 33
5.2.2 Structure of the dialog windows ............................................ 33
5.2.3 Navigating in the dialog ......................................................... 34
5.2.4 Entering text and numbers ..................................................... 34
5.3 Methods .............................................................................. 35
5.3.1 Method templates ................................................................. 35
5.3.2 Creating a new method ......................................................... 36
5.3.3 Saving a method ................................................................... 37
5.3.4 Loading a method ................................................................. 38
5.3.5 Exporting a method ............................................................... 38
5.4 Performing a sample series ............................................... 39
5.4.1 Starting the sample series ...................................................... 40
5.4.2 Pausing a sample series and continuing ................................. 41
5.5 Printing a report manually ................................................. 43
5.6 Manual control ................................................................... 44
5.6.1 Rotating the sample rack ....................................................... 44
5.6.2 Moving the lift ....................................................................... 45
5.6.3 Controlling the stirrer ............................................................. 45
6 System settings 47
6.1 Basic settings ...................................................................... 47
6.2 File management ................................................................ 50
6.3 Lift settings (Lift) ................................................................ 51
6.4 Configuring external devices ............................................. 52
6.5 Instrument diagnosis .......................................................... 52
6.5.1 Loading program versions and language files ......................... 52
6.5.2 Diagnosis functions ............................................................... 54
7 Parameters 55
7.1 Automation: Dipping in special ......................................... 55
7.2 Automation: Dipping in special 2 ...................................... 56
7.3 Automation: Double dipping ............................................. 57
7.4 Automation: Rinsing in sample ......................................... 58
7.5 Automation: Rinsing in special .......................................... 59

￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭ Table of contents
869 Compact Sample Changer ￭￭￭￭￭￭￭￭ V
8 Operation and maintenance 61
9 Appendix 62
9.1 Remote interface ................................................................ 62
9.1.1 Pin assignment of the remote interface .................................. 62
9.1.2 Status diagram of the remote interface .................................. 63
9.2 Stirring rate ......................................................................... 63
9.3 USB devices ......................................................................... 64
9.3.1 6.2147.000 numerical USB keypad ........................................ 64
9.3.2 Printer ................................................................................... 65
9.4 System initialization ........................................................... 65
10 Technical specifications 67
10.1 Lift ........................................................................................ 67
10.2 Turntable ............................................................................. 67
10.3 Interfaces and connectors ................................................. 67
10.4 Power connection ............................................................... 67
10.5 Ambient temperature ......................................................... 68
10.6 Reference conditions .......................................................... 68
10.7 Dimensions .......................................................................... 68
11 Accessories 69
Index 70

Table of figures ￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭
VI ￭￭￭￭￭￭￭￭ 869 Compact Sample Changer
Table of figures
Figure 1 Front 869 Compact Sample Changer ................................................. 7
Figure 2 869 Compact Sample Changer rear ................................................... 8
Figure 3 Removing shields ............................................................................... 9
Figure 4 Equip the titration head ................................................................... 10
Figure 5 Installing rinsing nozzles and aspiration tip ...................................... 11
Figure 6 Setting up the distributor ................................................................. 12
Figure 7 Rod stirrer 802 Stirrer ...................................................................... 13
Figure 8 Connecting a stirrer ......................................................................... 13
Figure 9 Connecting USB devices .................................................................. 14
Figure 10 Connecting the USB stick ................................................................ 15
Figure 11 Connecting the 6.2147.000 USB keyboard with USB stick and
printer ............................................................................................. 16
Figure 12 Remote cable with lettering ............................................................. 17
Figure 13 Remote connection 869 Compact Sample Changer - Titrino plus ..... 18
Figure 14 Remote connection Dosimat plus - 869 Compact Sample Changer -
Titrino plus ...................................................................................... 18
Figure 15 Remote connection 869 Compact Sample Changer - 843 Pump Station
- Titrino plus .................................................................................... 19
Figure 16 Remote connection 869 Compact Sample Changer - 843 Pump Station
- Titrino plus - Dosimat plus ............................................................. 19
Figure 17 Remote connection 869 Compact Sample Changer - 843 Pump Station
- Titrino plus - Dosimat plus ............................................................. 20
Figure 18 Remote connection Dosimat - 869 Compact Sample Changer -
Titrino ............................................................................................. 21
Figure 19 Remote connection Dosimat - 869 Compact Sample Changer - 843
Pump Unit - Titrino .......................................................................... 22
Figure 20 Remote connection 869 Compact Sample Changer - Remote Box 867 -
pH Module / Conductivity Module ................................................... 22
Figure 21 Remote connection 869 Compact Sample Changer - 843 Pump Unit -
Remote Box - 867 pH Module / Conductivity Module ...................... 23
Figure 22 Mounting shields ............................................................................. 24
Figure 23 Keypad 869 Compact Sample Changer ............................................ 33
Figure 24 Pin assignment of remote socket and remote plug ........................... 62
Figure 25 Remote status diagram .................................................................... 63
Figure 26 Rotational speed depending on the stirring rate ............................... 64

￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭ 1 Introduction
869 Compact Sample Changer ￭￭￭￭￭￭￭￭ 1
1 Introduction
1.1 Instrument description
The 869 Compact Sample Changer is a sample changer for titration with a
wide variety of applications. It is the central control instrument in an auto-
mation system that in addition to a titrator, can also include a Dosimat (for
adding auxiliary solutions) and a pump for rinsing and aspirating the sam-
ple vessels.
Specified method runs can be individually parameterized and saved as
sample-specific methods. The methods can be exported to a connected
USB flash drive. This function enables you to copy methods quickly and
easily from one instrument to another.
1.1.1 Instrument components
The 869 Compact Sample Changer has the following components:
￭Turntable
Permanently mounted sample rack with 11 positions for sample beak-
ers and 1 position for a rinsing beaker.
￭Lift with lift head
For two electrodes, one rod stirrer, two dosing tips, one aspiration tip
and three rinsing nozzles.
￭Stirrer connector
For one rod stirrer with propeller stirrer.
￭USB (OTG) connector
The 6.2151.100 adapter can be used to connect, for example, a printer
or a USB flash drive (for system backup or method export).
￭Remote connector
For connecting a titrator, a Dosimat, and/or an 843 Pump Station.
1.1.2 Intended use
The 869 Compact Sample Changer is designed for usage as an automa-
tion system in analytical laboratories. It is not suitable for usage in bio-
chemical, biological or medical environments in its basic equipment ver-
sion.

1.2 About the documentation ￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭
2￭￭￭￭￭￭￭￭ 869 Compact Sample Changer
1.2 About the documentation
CAUTION
Please read through this documentation carefully before putting the
instrument into operation. The documentation contains information
and warnings which the user must follow in order to ensure safe opera-
tion of the instrument.
1.2.1 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.

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869 Compact Sample Changer ￭￭￭￭￭￭￭￭ 3
NOTE
This symbol highlights additional information and
tips.
1.3 Safety instructions
1.3.1 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.
1.3.2 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).

1.3 Safety instructions ￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭
4￭￭￭￭￭￭￭￭ 869 Compact Sample Changer
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.
1.3.3 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.
1.3.4 Personnel safety
WARNING
Wear protective goggles and working clothes suitable for laboratory
work while operating the 869 Compact Sample Changer. It is also
advisable to wear gloves when caustic liquids are used or in situations
where glass vessels could break.
WARNING
Always install the safety shield supplied with the equipment before
using the instrument for the first time. Pre-installed safety shields are
not allowed to be removed.
The 869 Compact Sample Changer may not be operated without a
safety shield!

￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭ 1 Introduction
869 Compact Sample Changer ￭￭￭￭￭￭￭￭ 5
WARNING
Personnel are not permitted to reach into the working area of the
instrument while operations are running!
A considerable risk of injury exists for the user.
WARNING
In the event of a possible blockage of a drive, the mains plug must be
pulled out of the socket immediately. Do not attempt to free jammed
sample vessels or other parts while the device is switched on. Blockages
can only be cleared when the instrument is in a voltage-free status; this
action generally involves a considerable risk of injury.
WARNING
The 869 Compact Sample Changer is not suitable for utilization in bio-
chemical, biological or medical environments in its basic equipment ver-
sion.
Appropriate protective measures must be implemented in the event
that potentially infectious samples or reagents are being processed.
1.3.5 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.
1.3.6 Danger from biological substances
If the instrument is used for biological hazardous substances, it must be
marked in accordance with regulations.
In case of a return shipment to Metrohm or a Metrohm Service partner,
the instrument or component has to be decontaminated and the hazard

1.3 Safety instructions ￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭
6￭￭￭￭￭￭￭￭ 869 Compact Sample Changer
symbol for biological hazardous substances must be removed. A declara-
tion of decontamination must be enclosed.
WARNING
Danger of infection and poisoning from biological hazardous substan-
ces
Poisoning from toxins and/or infections from samples contaminated
with microorganisms.
￭Wear protective equipment.
￭Use exhaust equipment when working with vaporizing hazardous
substances.
￭Dispose of biologically contaminated substances properly.
1.3.7 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 Overview of the instrument
869 Compact Sample Changer ￭￭￭￭￭￭￭￭ 7
2 Overview of the instrument
1
2
3
4
5
Figure 1 Front 869 Compact Sample Changer
1Safety shield
With knurled screws for mounting. The
safety shield can be folded up.
2Sample rack
For 11 sample beakers and 1 rinsing beaker
(6.1459.300, 120 mL)
3Display 4Keypad
5Special position
For a rinsing beaker

￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭
8￭￭￭￭￭￭￭￭ 869 Compact Sample Changer
1
2 3 4 5 6
Figure 2 869 Compact Sample Changer rear
1Tubing and cable guide 2Remote connector
For connecting instruments with a remote
interface. D-sub, 9-pin.
3USB (OTG) connector
For connecting printers, USB flash drives,
USB hubs, etc.
4Stirrer connection
For 802 Stirrer (rod stirrer).
5Power socket 6Type plate
Contains specifications concerning supply
voltage and serial number

￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭ 3 Installation
869 Compact Sample Changer ￭￭￭￭￭￭￭￭ 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 Removing the safety shield and cable guide
1
1
2
Figure 3 Removing shields

3.3 Setting up the titration head ￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭
10 ￭￭￭￭￭￭￭￭ 869 Compact Sample Changer
The installation of the accessories is easier to carry out if you remove the
safety shield and the cable guide beforehand. Proceed as follows:
1Loosen the knurled screws on the sides of the tower and remove the
safety shield.
2Loosen the knurled screws on the rear of the tower and remove the
cable guide.
Do not forget to refasten these two shields after the installation of the
accessories.
3.3 Setting up the titration head
Equipping the titration head without rinsing equipment
2.802.0010
6.1909.050
6.1805.xxx
6.2104.020
6.02/04xx.xxx
1
2
3
4
5
Figure 4 Equip the titration head
1Insert the rod stirrer (802 Stirrer) from above into the rear opening of
the titration head.
2Guide the 6.1909.050 stirring propeller over the drive shaft of the
rod stirrer from below and press firmly.

￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭ 3 Installation
869 Compact Sample Changer ￭￭￭￭￭￭￭￭ 11
3Insert an electrode into the left-hand opening of the titration head.
4Connect a 6.2104.020 electrode cable to the electrode. Connect the
other end to the titrator.
5Manually screw the two enclosed 6.1805.110 FEP tubings firmly to
the dosing tips mounted on the titration head. Connect the two
other ends of the tubings with the exchange units on the titrator or
on the Dosimat.
The remaining openings of the titration head can be sealed with the
enclosed stoppers provided.
Equipping the titration head with rinsing equipment
An 843 Pump Station (with two pumps) can be used when the sample
processing requires the rinsing of the electrodes and the aspiration of the
processed sample solution. The 843 Pump Station is available as model
version with complete rinsing and aspiration equipment. The rinsing and
aspiration equipment is installed as follows:
6.1805.420
6.2740.020
6.1805.200
6.1543.170
1
2
3
4
Figure 5 Installing rinsing nozzles and aspiration tip
1Insert the three 6.2740.020 spray nozzles into the titration head
according to the illustration. The position of the individual spray noz-
zles can also be adjusted as required in terms of height.

3.3 Setting up the titration head ￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭
12 ￭￭￭￭￭￭￭￭ 869 Compact Sample Changer
2Manually screw the three 6.1805.420 FEP tubings (with M6 thread)
firmly to the spray nozzles.
3Insert the 6.1543.120 aspiration tip into the front opening of the
titration head. It can be adjusted in terms of height and its tip can be
cut as required to the necessary length.
4Manually screw the 6.1805.200 aspiration tubing (with M8 thread)
firmly to the aspiration tip.
Setting up the distributor
The 6.1818.240 distributor must be mounted on the rear side of the
tower for complete installation of the rinsing and aspiration equipment. It
is supplied with the 843 Pump Station.
First loosen the knurled screws of the cable and tubing cover and then
remove it. Proceed as follows:
6.1805.420
6.1812.000
6.1805.200
6.1808.240
4
1
23
Figure 6 Setting up the distributor
1￭Loosen both union nuts on the distributor and guide each of
them over the end of one 6.1812.000 PTFE tubing.
￭Fasten the tubing ends to the distributor and fix in place with the
union nuts.
￭Connect the free tubing ends with a disposal or rinsing canister.
2Manually screw the 6.1805.420 rinsing tubings already mounted on
the titration head firmly into the openings with M6 threaded bores
on the distributor.
3Manually screw the 6.1805.200 aspiration tubing with M8 thread
firmly into the remaining opening on the distributor.