Metrohm 786 Swing Head User manual

786 Swing Head
Manual
8.786.8001EN / 2019-09-25

Metrohm AG
CH-9100 Herisau
Switzerland
Phone [phone]
Fax [phone]
[email protected]
www.metrohm.com
786 Swing Head
Manual
8.786.8001EN / 2019-09-25

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
786 Swing Head ￭￭￭￭￭￭￭￭ III
Table of contents
1 Introduction 1
1.1 Instrument description ......................................................... 1
1.2 Model versions ...................................................................... 1
1.3 Intended use ......................................................................... 2
1.4 About the documentation ................................................... 2
1.4.1 Symbols and conventions ........................................................ 2
1.5 Safety instructions ................................................................ 3
1.5.1 General notes on safety ........................................................... 3
1.5.2 Electrical safety ........................................................................ 3
1.5.3 Tubing and capillary connections ............................................. 4
1.5.4 Personnel safety ....................................................................... 4
1.5.5 Flammable solvents and chemicals ........................................... 5
1.5.6 Recycling and disposal ............................................................. 5
2 Overview of the instrument 6
3 Installation 8
3.1 Packaging .............................................................................. 8
3.2 Checks .................................................................................... 8
3.3 Mounting the Swing Head to the Sample Processor ......... 8
3.3.1 Mounting the Swing Head ....................................................... 8
3.3.2 Guide chain for cables and tubing ......................................... 11
3.3.3 Mounting the robotic arm reinforcement ............................... 12
3.4 Configuring the robotic arm .............................................. 13
3.5 Mounting the robotic arm ................................................. 16
3.6 Robotic arms with beaker sensor ..................................... 18
4 Handling and maintenance 20
5 Troubleshooting 21
5.1 Robotic arm ......................................................................... 21
6 Appendix 23
6.1 Robotic arms ....................................................................... 23
6.1.1 Robotic arms for titration ....................................................... 23
6.1.2 Robotic arms for sample preparation ..................................... 25
6.1.3 Robotic arms for special applications ..................................... 26

Table of contents ￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭
IV ￭￭￭￭￭￭￭￭ 786 Swing Head
7 Technical specifications 28
7.1 786 Swing Head ................................................................. 28
7.2 Supply connection .............................................................. 28
7.3 Ambient temperature ......................................................... 28
7.4 Reference conditions .......................................................... 28
7.5 Dimensions .......................................................................... 29
8 Accessories 30
Index 31

￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭ Table of figures
786 Swing Head ￭￭￭￭￭￭￭￭ V
Table of figures
Figure 1 Front 786 Swing Head ....................................................................... 6
Figure 2 Underside 786 Swing Head ............................................................... 7
Figure 3 Connecting Swing Head .................................................................... 9
Figure 4 Mounting the tower extension ........................................................ 10
Figure 5 Mounting the Swing Head to the tower extension ........................... 11
Figure 6 Guide chain - Opening chain links ................................................... 12
Figure 7 Mounting the 6.2058.090 robotic arm reinforcement ...................... 13
Figure 8 Robotic arms - standard model versions: .......................................... 14
Figure 9 Configuration data of the robotic arms ............................................ 15
Figure 10 Limitation screw on the robotic arm ................................................ 16
Figure 11 Mounting the robotic arm ............................................................... 17
Figure 12 Connecting a beaker sensor (for example 6.1462.150) .................... 18

￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭ 1 Introduction
786 Swing Head ￭￭￭￭￭￭￭￭ 1
1 Introduction
1.1 Instrument description
The 786 Swing Head is an auxiliary drive for the Sample Processors from
Metrohm, e.g. the 815 USB Robotic Sample Processor XL. It extends the
capabilities of these automation systems to include the possibility of mov-
ing precisely to any given position on a sample rack. The working area of
the Sample Processors is now being expanded even further. Now, even
positions outside of the sample rack can be moved to as a result. It is thus
possible to transfer samples from the sample rack into separate working
stations in just a few simple steps.
This is a high-precision motor drive, which is mounted on the tower of a
Sample Processor. Robotic arms of different construction types are avail-
able for assembly on the 786 Swing Head. Equipped with the correspond-
ing accessories, these can be used for applications requiring a high degree
of flexibility or very complex working steps.
1.2 Model versions
786 Swing Head with transfer robotic arm left (2.786.0010)
Additional equipment for the Sample Processors for transferring/pipetting
liquid samples out of smaller-sized sample vessels and into larger titration
vessels on the rack or into an external titration cell which is mounted to
the left of the workplace.
786 Swing Head with transfer robotic arm right (2.786.0020)
Additional equipment for the Sample Processors for transferring/pipetting
liquid samples from smaller-sized sample vessels and into larger titration
vessels on the rack or into an external titration cell which is mounted to
the right of the workplace.
786 Swing Head with titration robotic arm (2.786.0030)
Additional equipment for the Sample Processor for the purpose of direct
titration into sample vessels 75 mL in size and larger.
786 Swing Head without robotic arm (2.786.0040)
Additional equipment for the Sample Processor without titration or trans-
fer robotic arm.
786 Swing Head with reinforcement right (2.786.0240)
Reinforced Swing Head for assembly on Sample Processors.

1.3 Intended use ￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭
2￭￭￭￭￭￭￭￭ 786 Swing Head
1.3 Intended use
The 786 Swing Head is designed for usage in an automation system in
analytical laboratories. It is not suitable for usage in biochemical, biologi-
cal or medical environments in its basic equipment version.
This instrument is suitable for transferring chemicals and flammable sol-
vents. The usage of the 786 Swing Head therefore requires that the user
has basic knowledge and experience in the handling of toxic and caustic
substances. Knowledge with respect to the application of the fire preven-
tion measures prescribed for laboratories or production plants is also man-
datory.
1.4 About the documentation
CAUTION
Please read through this documentation carefully before putting the
instrument into operation. The documentation contains information
and warnings which have to be followed by the user in order to ensure
safe operation of the instrument.
1.4.1 Symbols and conventions
The following symbols and styles are used 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.
Warning
This symbol draws attention to a possible life 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.

￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭ 1 Introduction
786 Swing Head ￭￭￭￭￭￭￭￭ 3
Warning
This symbol draws attention to a possible biological
hazard.
Caution
This symbol draws attention to a possible damage of
instruments or instrument parts.
Note
This symbol marks additional information and tips.
1.5 Safety instructions
1.5.1 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.
1.5.2 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.

1.5 Safety instructions ￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭
4￭￭￭￭￭￭￭￭ 786 Swing Head
1.5.3 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.
1.5.4 Personnel safety
WARNING
Wear protective goggles and working clothes suitable for laboratory
work while operating the 786 Swing Head. 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 786 Swing Head may not be operated without a safety shield!
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.

￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭ 1 Introduction
786 Swing Head ￭￭￭￭￭￭￭￭ 5
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 786 Swing Head is not suitable for utilization in biochemical, bio-
logical 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.
1.5.5 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.
￭Keep all sources of flame far from the workplace.
￭Clean up spilled liquids and solids immediately.
￭Follow the safety instructions of the chemical manufacturer.
1.5.6 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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6￭￭￭￭￭￭￭￭ 786 Swing Head
2 Overview of the instrument
1
2
3
4
5
Figure 1 Front 786 Swing Head
1Connection cable 2Connector for beaker sensor
3Housing 4Fastening plate
5Guide slot
For the robotic arm reinforcement.

￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭ 2 Overview of the instrument
786 Swing Head ￭￭￭￭￭￭￭￭ 7
1
2
3
3
4
Figure 2 Underside 786 Swing Head
1Drive disc 2Swing axis
3Drive pin 4M2 bore holes
For fastening a robotic arm.

3.1 Packaging ￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭
8￭￭￭￭￭￭￭￭ 786 Swing Head
3 Installation
3.1 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.
3.2 Checks
Immediately after receipt, check whether the shipment has arrived com-
plete and without damage by comparing it with the delivery note.
3.3 Mounting the Swing Head to the Sample Processor
3.3.1 Mounting the Swing Head
Dismounting the titration head holder
1
1
2
1Loosen the screws of the holder on both sides.
2Loosen and remove the holder from the holder plate of the guide
chain.
Use the hexagon key provided. The screws will be needed again later.

￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭ 3 Installation
786 Swing Head ￭￭￭￭￭￭￭￭ 9
Connecting the Swing Head
The connection socket (Mini DIN) for the Swing Head drive is each located
on the rear of the tower next to the stirrer connector.
Figure 3 Connecting Swing Head
Connect the Swing Head as follows:
1Plug in the cable
￭Guide the connection cable of the Swing Head through the guide
chain of the tower (see chapter 3.3.2, page 11).
￭Plug the Mini DIN plug into the socket 'Swing Head'.
Mounting the Swing Head
1
23
4
1Screw the Swing Head tightly to the holder plate of the guide chain.
2Clamp the Swing Head between the guide jaws.
3Screw the Swing Head to the guide jaws with the screws previously
loosened.

3.3 Mounting the Swing Head to the Sample Processor ￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭
10 ￭￭￭￭￭￭￭￭ 786 Swing Head
4Place the connection cable into the guide chain (see chapter 3.3.2,
page 11).
Mounting the Swing Head with tower extension
For certain applications, it may be necessary to mount the 786 Swing
Head at a higher position. A 6.2058.010 tower extension can be
mounted on the lift for this purpose.
First, remove the titration head holder from its mount (see chapter 3.3.1,
page 8). Proceed afterwards as follows:
1Fasten the tower extension to the lift guide of the Sample Processor
in accordance with the following illustration and fix it in place with
the screws provided.
1
Figure 4 Mounting the tower extension
2Mount the Swing Head to the holder plate of the guide chain.

￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭ 3 Installation
786 Swing Head ￭￭￭￭￭￭￭￭ 11
2
3
Figure 5 Mounting the Swing Head to the tower extension
3Screw the Swing Head tightly to the upper end of the tower exten-
sion.
3.3.2 Guide chain for cables and tubing
Tubings and cables can be placed into the guide chain.
You can open the individual chain links with a screwdriver as follows.
1Open the guide chain
￭Insert a screwdriver into the groove located on the side of a chain
link.
￭Loosen the clip with a forceful leverage movement.
￭Pull the clip out of the chain by hand.
￭Repeat the above actions for each chain link.

3.3 Mounting the Swing Head to the Sample Processor ￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭
12 ￭￭￭￭￭￭￭￭ 786 Swing Head
Figure 6 Guide chain - Opening chain links
2Insert into the guide chain
￭Place the required tubings or cables into the guide chain.
3Close the guide chain
￭Close the clip for each chain link again by hand and apply forceful
pressure to snap them into place.
CAUTION
Take care to ensure when mounting tubing and cables that there is no
traction on the drives while moving the lift or swiveling the robotic arm.
This could lead to overloading of and possible damage to the drive.
Remove the clips of the two lowest chain links when you install the rins-
ing and aspiration tubing.
3.3.3 Mounting the robotic arm reinforcement
In cases in which it is necessary to take up or strip off a filter or a pipetting
tip on the robotic arm, you must mount a 6.2058.090 robotic arm
reinforcement. The reinforcement provides the robotic arm with stable
resistance when picking up or stripping the tools used and prevents it
from bending.
The reinforcement has to be placed before mounting a robotic arm. Pro-
ceed as follows: