Metrohm 885 Compact Oven SC User manual

885 Compact Oven SC
Manual
8.885.8002EN / 2019-12-13

Metrohm AG
CH-9100 Herisau
Switzerland
Phone [phone]
Fax [phone]
[email protected]
www.metrohm.com
885 Compact Oven SC
Manual
8.885.8002EN / 2019-12-13

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
885 Compact Oven SC ￭￭￭￭￭￭￭￭ III
Table of contents
1 Introduction 1
1.1 Instrument description ......................................................... 1
1.1.1 Instrument components ........................................................... 1
1.1.2 Intended use ........................................................................... 2
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 ............................................. 5
1.3.4 Personnel safety ....................................................................... 5
1.3.5 Flammable solvents and chemicals ........................................... 6
1.3.6 Danger from biological substances .......................................... 6
1.3.7 Recycling and disposal ............................................................. 7
2 Overview of the instrument 8
3 Installation 10
3.1 Setting up the instrument .................................................. 10
3.1.1 Packaging .............................................................................. 10
3.1.2 Checks .................................................................................. 10
3.1.3 Location ................................................................................ 10
3.2 Mounting the stand plate .................................................. 10
3.3 Removing the safety shield ............................................... 11
3.4 Mounting the needles ........................................................ 12
3.5 Assembling the drying flasks ............................................ 14
3.6 Mounting the heating tubing ............................................ 16
3.7 Mounting the safety shield ................................................ 17
3.8 Mounting the dust filter .................................................... 18
3.9 Assembling the air/nitrogen connector ............................ 19
3.10 Inserting the heating tube into the KF titration cell ....... 20
3.11 Remote connections ........................................................... 22
3.11.1 Remote cable ........................................................................ 22
3.11.2 Example systems .................................................................... 22
3.12 Connecting a keyboard, printer and other USB devi-
ces ........................................................................................ 23
3.13 Connecting the instrument to the power grid ................. 25

Table of contents ￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭
IV ￭￭￭￭￭￭￭￭ 885 Compact Oven SC
4 Automation run 27
4.1 Execution sequences .......................................................... 27
4.2 Oven heating ....................................................................... 28
5 Operation 29
5.1 Switching the instrument on and off ................................ 29
5.2 Fundamentals of operation ............................................... 29
5.2.1 The keypad ............................................................................ 29
5.2.2 Structure of the dialog windows ............................................ 30
5.2.3 Navigating in the dialog ......................................................... 30
5.2.4 Entering text and numbers ..................................................... 30
5.3 Methods .............................................................................. 31
5.3.1 Creating a new method ......................................................... 31
5.3.2 Saving a method ................................................................... 32
5.3.3 Loading a method ................................................................. 33
5.3.4 Exporting a method ............................................................... 34
5.4 Performing a sample series ............................................... 35
5.4.1 Starting the sample series ...................................................... 35
5.4.2 Pausing a sample series and continuing ................................. 36
5.5 Printing a report manually ................................................. 37
5.6 Manual control ................................................................... 38
5.6.1 Rotating the sample rack ....................................................... 38
5.6.2 Moving the lift ....................................................................... 39
5.6.3 Switching the oven on/off ..................................................... 40
5.6.4 Entering the oven temperature .............................................. 40
5.6.5 Switching the gas flow on/off ................................................ 40
5.6.6 Entering the flow rate ............................................................ 41
6 System settings 42
6.1 Basic settings ...................................................................... 42
6.2 File management ................................................................ 45
6.3 Oven settings (heater) ........................................................ 46
6.4 Lift settings (Lift) ................................................................ 47
6.5 Configuring external devices ............................................. 48
6.6 Instrument diagnosis .......................................................... 50
6.6.1 Loading program versions and language files ......................... 50
6.6.2 Diagnosis functions ............................................................... 51
7 Parameters 52
7.1 Automation ......................................................................... 52
7.2 Reports ................................................................................ 53

￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭ Table of contents
885 Compact Oven SC ￭￭￭￭￭￭￭￭ V
8 Carrying out a determination 55
8.1 Conditioning the system .................................................... 55
8.1.1 Preparing the KF titration cell ................................................. 55
8.1.2 Preparing the 885 Compact Oven SC ..................................... 56
9 Operation and maintenance 59
10 Appendix 60
10.1 Practical notes .................................................................... 60
10.2 Remote interface ................................................................ 61
10.2.1 Pin assignment of the remote interface .................................. 61
10.2.2 Status diagram of the remote interface .................................. 62
10.3 System initialization ........................................................... 63
10.4 Literature ............................................................................. 64
11 Troubleshooting 65
11.1 885 Compact Oven SC ........................................................ 65
12 Technical specifications 66
12.1 Lift ........................................................................................ 66
12.2 Turntable ............................................................................. 66
12.3 Oven ..................................................................................... 66
12.4 Gas flow .............................................................................. 67
12.5 Outlet heater ....................................................................... 67
12.6 Interfaces and connectors ................................................. 67
12.7 Power connection ............................................................... 67
12.8 Reference conditions .......................................................... 68
12.9 Ambient temperature ......................................................... 68
12.10 Dimensions .......................................................................... 68
13 Accessories 69
Index 70

Table of figures ￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭
VI ￭￭￭￭￭￭￭￭ 885 Compact Oven SC
Table of figures
Figure 1 Mounting the stand plate ................................................................ 11
Figure 2 Removing the coverings .................................................................. 11
Figure 3 Mounting the needles ..................................................................... 13
Figure 4 Connecting the tubing to the gas outlet .......................................... 14
Figure 5 Preparing the drying flasks ............................................................... 14
Figure 6 Mounting drying flasks and tubings ................................................. 15
Figure 7 Mounting the heating tubing .......................................................... 16
Figure 8 Connecting the heating tubing ........................................................ 17
Figure 9 Mounting the coverings .................................................................. 18
Figure 10 Mounting the dust filter .................................................................. 19
Figure 11 External gas supply connection ........................................................ 19
Figure 12 Coulometric KF titration cell ............................................................ 20
Figure 13 Volumetric KF titration cell ............................................................... 21
Figure 14 Remote connection 885 Compact Oven SC - Coulometer or 7xx KF
Titrino ............................................................................................. 22
Figure 15 Remote connection 885 Compact Oven SC - Remote Box - 851/852
Titrando .......................................................................................... 23
Figure 16 Connecting USB devices .................................................................. 23
Figure 17 Connecting the USB stick ................................................................ 25
Figure 18 Connecting the 6.2147.000 USB keyboard with USB stick and
printer ............................................................................................. 25
Figure 19 Keypad 885 Compact Oven SC ........................................................ 29
Figure 20 Directory structure on the USB flash drive ........................................ 45
Figure 21 Pin assignment of remote socket and remote plug ........................... 61
Figure 22 Remote status diagram .................................................................... 62

￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭ 1 Introduction
885 Compact Oven SC ￭￭￭￭￭￭￭￭ 1
1 Introduction
1.1 Instrument description
The 885 Compact Oven SC is used wherever the heating of a sample
and/or the thermal expulsion of moisture in solids or liquids is required. In
combination with a coulometric or volumetric KF titrator, the 885 Com-
pact Oven SC is the ideal analysis system for water content determination
in samples that contain disruptive components or from which moisture
can be removed only with difficulty.
One of its decisive advantages is reducing sample preparation to a mini-
mum. Thanks to the use of hermetically sealed sample vessels ("headspace
vials"), samples can be filled directly on-site. The PTFE-coated septa guar-
antee a constant, unaltered water content, even after prolonged holding
times.
Thanks to the combination of a sample changer with an oven module,
automated processing of several samples is possible in a single sample
series. This ensures that only the smallest possible amount of work is
required.
The sample heated in the oven module releases its moisture in the form of
water vapor, which is conveyed into a measuring cell with the aid of a gas
flow. An air pump is installed to generate the gas flow. An inlet valve is
available for nitrogen or other inert gases. The moisture can be deter-
mined in the measuring cell either coulometrically or volumetrically using
Karl Fischer titration.
1.1.1 Instrument components
The 885 Compact Oven SC has the following components:
￭Turntable
Permanently mounted sample rack with 17 positions for sample vials
and 1 position for a conditioning vial.
￭Lift with working head
Working head with needle adapter and tubing for the gas flow.
￭Oven
Oven module made of aluminum with software-operated temperature
control for heating the sample vessel.
￭Fan
Propeller fan for cooling the oven module.
￭Inlet valve
Valve for switching over the source of the gas flow.

1.2 About the documentation ￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭
2￭￭￭￭￭￭￭￭ 885 Compact Oven SC
￭Air pump
Pump for generating the gas flow.
￭Outlet heater
Heating tubing for preventing the condensation of moisture.
￭Operating unit
Monochrome LCD display and keyboard.
1.1.2 Intended use
The 885 Compact Oven SC is designed for usage as an auxiliary device for
automated sample preparation in analytical laboratories. Its main area of
application is water content determination using Karl Fischer titration
(coulometric or volumetric). The 885 Compact Oven SC enables the appli-
cation of thermal gas extraction technology.
This instrument is suitable for processing chemicals and flammable sam-
ples. Therefore, the use of the 885 Compact Oven SC requires the user to
have basic knowledge and experience in handling toxic and caustic sub-
stances. Knowledge regarding the application of fire prevention measures
prescribed for laboratories is also mandatory.
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

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885 Compact Oven SC ￭￭￭￭￭￭￭￭ 3
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.
1.3 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.

1.3 Safety instructions ￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭
4￭￭￭￭￭￭￭￭ 885 Compact Oven SC
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.

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885 Compact Oven SC ￭￭￭￭￭￭￭￭ 5
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 glasses and working clothes suitable for laboratory
work while operating the 885 Compact Oven SC. It is also advisable to
wear gloves when caustic liquids are used or in situations where glass
vessels could break.
WARNING
The oven module can exhibit temperatures of up to 250 °C. Sample
vessels and components of the sample rack can also become so hot
(<60 °C), that the skin could suffer burns in the event of contact.
Never touch the rack, sample vessels or oven when the heating is
turned on. Be aware of the current value on the temperature display.
Wear working gloves.
Do not fail to switch off the device before attempting to clean it and
wait until the oven has cooled down.
WARNING
Always install the safety shield supplied with the equipment before
using the instrument for the first time. Never remove the pre-installed
safety shields.
The 885 Compact Oven SC may not be operated without a safety
shield!

1.3 Safety instructions ￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭
6￭￭￭￭￭￭￭￭ 885 Compact Oven SC
WARNING
Personnel may not 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 jamming of a drive, the power plug must be
pulled out of the socket immediately. Do not attempt to free jammed
sample vessels or other parts while the instrument is switched on. Jam-
ming can only be cleared when the instrument is in a de-energized
state; this action is generally associated with a considerable risk of
injury.
WARNING
The 885 Compact Oven SC is not suitable for usage in biochemical,
biological or medical environments in its basic equipment version.
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 Introduction
885 Compact Oven SC ￭￭￭￭￭￭￭￭ 7
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.

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8￭￭￭￭￭￭￭￭ 885 Compact Oven SC
2 Overview of the instrument
1
2
3
4
5
6
7
8
9
10
11
12
13
14
1Warning instruction 2Safety shield (6.2751.170)
3Lift with distributor 4Deflector sheet
For deflecting the vials while the lift is travel-
ing upwards.
5Conditioning position
For a conditioning vial.
6Sample rack
For 17 samples.
7Display 8Keypad
9Air pump inlet
With 6.2724.010 dust filter.
10 Instruction sign
Displays the tubing of the drying flasks.
11 Gas outlet
For the tubing for testing. With M6 thread.
12 Gas connections
For the drying flasks. With M6 thread.
13 Recesses in the housing
For the drying flasks.
14 Warning symbol
Warns against hot surfaces.

￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭ 2 Overview of the instrument
885 Compact Oven SC ￭￭￭￭￭￭￭￭ 9
1
2
34
5
6
7
1Tubing and cable guide 2Outlet heater connection
For the heating tubing.
3Air/nitrogen connector
With M6 inner thread. Inlet for external gas-
sing.
4Power socket
5Remote connector
For connecting instruments with a remote
interface. D-sub, 9-pin.
6USB (OTG) connector
For connecting printers, USB flash drives,
USB hubs, etc.
7Type plate
Contains specifications concerning supply
voltage and serial number

3.1 Setting up the instrument ￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭
10 ￭￭￭￭￭￭￭￭ 885 Compact Oven SC
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 Mounting the stand plate
The titration cell must be fitted as close to the device as possible. Two
stand plates (6.2001.050 and 6.2001.060) with support rods are available
for this purpose, each of which is supplied with a KF titrator.

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885 Compact Oven SC ￭￭￭￭￭￭￭￭ 11
1
2
3
6.2001.060 6.2001.050
6.2016.030
Figure 1 Mounting the stand plate
Proceed as follows:
1Screw the stand plate to the base of the 885 Compact Oven SC with
the screws provided, see figure.
2Guide the large cylinder screw into the opening of the stand plate
from the bottom.
3Screw the 6.2016.030 support rod tight on the cylinder screw. Fasten
in place with a hexagon key.
3.3 Removing the safety shield
1
1
2
Figure 2 Removing the coverings

3.4 Mounting the needles ￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭
12 ￭￭￭￭￭￭￭￭ 885 Compact Oven SC
If you remove the safety shield before, the installation of the accessories is
easier to carry out. Proceed as follows:
1Loosen the hexagon 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 cover.
Do not forget to refasten the safety shields after the installation of the
accessories.
3.4 Mounting the needles
The length of the needle holder defines how deeply the piercing needle
penetrates the sample vessel.
If there is a danger that the heated sample could clog the needle, then
use the 6.2049.050 needle holder which is 73 mm in length. In this
case the piercing needle penetrates the sample vessel only slightly deeper
than the exhaust air needle and has no contact with the sample itself.
CAUTION
Movement with the needle holder 6.2049.050 may not extend more
deeply than up to Lift position 78 mm.
The 6.2049.040 needle holder, which is 58 mm in length, ensures that
the needle penetrates the liquid or powdery sample. The carrier gas can
flow through the sample and effect an efficient expulsion of the moisture
it contains. The 6.2049.040 needle holder can be ordered from Metrohm
if required.