Metrohm 760 User manual

760 Sample Changer760 Sample Changer

Instructions for Use

8.760.1013

CH-9101 Herisau/Switzerland

Phone +41 71 353 85 85

Fax +41 71 353 89 01

E-Mail [email protected]

Internet www.metrohm.ch

760 Sample Changer

Instructions for Use

8.760.1013 2000.07 up/dm

Table of Contents

Page

1 OVERVIEW .................................................................1

1.1 Side View ....................................................................1

1.2 Rear View ....................................................................2

1.3 Sensors ......................................................................3

2 INSTALLATION ............................................................4

2.1 Setting up the Instrument ...........................................4

2.2 Safety Considerations ................................................6

2.3 Arranging the Accessories .........................................7

2.3.1 Connecting the Keyboard ...................................7

2.3.2 Magnetic Stirrer .................................................7

2.3.3 Racks ...............................................................7

2.3.4 Mounting and Setting up the Titration Heads ........8

2.3.5 Use of the sample beaker for Karl Fischer

Titration ........................................................... 10

2.4 Remote Connections ............................................... 11

2.4.1 Typical Combinations of Instruments ................ 12

2.5 Racks ........................................................................ 14

3 INTRODUCTION .........................................................15

3.1 Important Features ................................................... 15

3.2 Key Functions ........................................................... 16

3.3 Memory Initialization ................................................ 17

3.4 Configuration Procedure .......................................... 17

3.4The Methods ............................................................. 20

4 APPENDIX ................................................................23

4.1 Error Messages ......................................................... 23

4.2 Method Listings ........................................................ 25

4.3 Technical Specifications ........................................... 29

4.4 Servicing and Maintenance ....................................... 30

4.4.1 Servicing ......................................................... 30

4.4.2 Maintenance / Attendance ................................ 30

4.5 Warranty and Conformity ......................................... 31

4.5.1 Warranty ......................................................... 31

4.5.2 Certificate of Conformity .................................. 32

4.6 Accessories .............................................................. 34

5 INDEX......................................................................37

1.1 Side View

760 Sample Changer, Overview 1

1Overview

1.1 Side View

Safety note:

Never operate the 760 Sample Changer without splash protection

and plug cover being mounted. The plug cover prevents any con-

tamination of the connectors, caused by spilled solvents or chemi-

cals.

Splash protection

Plug cover

Rack

Lift

Line sleeve

Line frame

Tower

Connectors

Stirrer rail

1.2 Rear View

760 Sample Changer, Overview

The Connectors (side view):

The remote socket serves the connection of Metrohm-or other

measuring instruments that communicate via a parallel cable

(see p. 11).

1.2 Rear View

Made by Metrohm Herisau Switzerland

Keyboard

Type 1.760.0010 Nr. 0010/01104

Remote socket

Stirrer sockets

Mounting srew

for splash protection

Line sleeve

Plug cover

Keyboard connector

Line frame

1.3 Sensors

760 Sample Changer, Overview 3

Keyboard Connector (rear):

Made by Metrohm Herisau Switzerland

Keyboard

Type 1.760.0010 Nr. 0010/01104

1.3 Sensors

Beaker test

Front view

Each tower of the 760 Sample

Changer is equipped with a

beaker indicator to detect the

presence of a beaker in front

of the tower. This infrared

sensor detects many different

materials, if any object is

placed in correct position. This

beaker test is carried out after

each MOVE operation.

Magnetic rack code indicator

The magnetic sensor for the

detection of the individual rack

codes is mounted below the

sample changer's turntable.

The magnetic binary code of

the racks can only be read, if

the rack is in initial position

and therefore the magnet

holder is in accurate position

right above the rack code in-

dicator. For this reason the

760 Sample Changer should

be initialized by <RESET> or

turned off and on right after

every rack change.

Keyboard connector

Splash protection

Beaker indicator

Rack

Magnetic indicator

Manufacturing number

Magnet holder

2.1 Setting up the Instrument

760 Sample Changer, Installation

2Installation

2.1 Setting up the Instrument

Packaging

The 760 Sample Changer is supplied with the accessories in sepa-

rate special packages designed to ensure maximum protection.

These contain shock-absorbing foam linings. As only these special

packages guarantee damage-free transport of the instrument, it is

essential you store them in a safe place.

Control

Immediately following delivery, check that the consignment is

complete and undamaged (compare with delivery note and acces-

sories list in the Instructions for Use, page 34). In case of damage

see "Warranty", page 31.

Setting up

The 760 Sample Changer is a rugged instrument and may be used

in rough environments such as laboratories and manufacturing

plants. It must not be exposed to a corrosive atmosphere. If the

sample changer is operated in a rough environment, regular main-

tenance is strongly recommended.

Power Supply

Follow these instructions to connect the 760 Sample Changer to

the power supply. Ensure that the instrument is never operated

with incorrect voltage ratings and/or with fuses of an incorrect rat-

ing, otherwise there is a fire hazard!

Setting the instrument supply voltage

Before switching on the 760 Sample Changer for the first time,

check that the line voltage set on the instrument (see next page)

matches the local power supply voltage. If this is not the case,

change the voltage setting as follows:

0Power Supply

760 Sample Changer, Installation 5

•Disconnect line cable

Unplug the 760 Sample Changer.

•Remove fuse holder

Using a screw driver, loosen the fuse holder and pull it out.

•Checking and replacing fuse

Carefully remove the built-in fuse and check its specifications.

(The position of the fuse in the fuse holder is marked by the

white arrow printed next to the supply voltage):

100……120 V 0.5 A (slow) ord. no. U.600.0014

220……240 V 0.25 A (slow) ord. no. U.600.0011

•Replace fuse

Replace fuse if necessary and reinsert it in the fuse holder.

•Insert the fuse holder

Insert the fuse holder according to the appropriate supply volt-

age. The white arrow besides the desired voltage has to point

towards the white block mark printed on the fuse holder's panel

(see below).

220 -

-240 V

100 -

-120 V

220 -

-240 V

100 -

-120 V

100 –120 V

220 –240 V

Power switch

Power plug

Fuse holder

2.2 Safety Considerations

760 Sample Changer, Installation

2.2 Safety Considerations

Safety note:

Never operate the 760 Sample Changer without splash protection

and plug cover being mounted. The plug cover prevents any con-

tamination of the connectors, caused by spilled solvents or chemi-

cals.

If failure or malfunctioning occurs during operation of the 760 Sam-

ple Changer, the Metrohm Service Department should be

consulted.

If opening the instrument is unavoidable, the following safety pre-

cautions are to be strictly adhered to:

Before opening the instrument disconnect it from all electri-

cal sources. Make sure that the power plug has been pulled

out.

Electronic components are sensitive to static electricity and can be

destroyed by discharge. Before touching any components inside

the instrument, both the person and his tools should be grounded

by grasping a grounded object (for example: a metallic part of the

casing of the instrument or a radiator) in order to eliminate any

static electricity.

Only in exceptional cases should the instrument be opened while it

is switched on. Because parts that conduct current are exposed in

this case, this should only be undertaken by an expert who is ac-

quainted with the associated dangers.

When peripheral instruments are connected to the 760 Sample

Changer, the sample changer and the instruments to be connected

have to be switched off, otherwise all instruments could suffer

damage.

If it becomes apparent that the instrument can no longer be oper-

ated safely, it must be put out of operation.

2.3 Arranging the Accessories

760 Sample Changer, Installation 7

2.3 Arranging the Accessories

2.3.1 Connecting the Keyboard

Made by Metrohm Herisau Switzerland

Keyboard

Type 1.760.0010 Nr. 0010/01104

The keyboard is to be con-

nected to the keyboard

socket on the rear side of the

sample changer.

To disconnect press the plug

together slightly on both

sides.

2.3.2 Magnetic Stirrer

Magnetic stirrers 2.741.0010

may be placed in any position

on the stirrer rail beneath the

rack.

2.3.3 Racks

After placing the rack on the

turntable, the sample

changer must be initialized by

pressing the <RESET> key

or turning the sampler

changer off and on. This

enables the safe reading of

the magnetic rack code and

can only be done if rack

position 1 is directed to

tower 1. Before a rack is

used for the first time, the lift

positions have to be set (s.

Chapter. 3.4).

Rack

Stirrer rail

Magnet holder

Magnetic sensor

Rack

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