Metrohm 717 User manual

CH-9101 Herisau/Switzerland

Tel. +41 71 353 85 85

Fax +41 71 353 89 01

E-Mail [email protected]

Internet http://www.metrohm.ch

717 Sample Changer

Instructions for use

8.717.1003

98.03 sn

Table of Contents

Page

1 OVERVIEW ___________________________________________ 1

1.1 Side View _______________________________________ 1

1.2 Rear View _______________________________________ 2

1.3 Sensors _________________________________________ 3

1.4 The Sample Changer Models _______________________ 4

2INSTALLATION ________________________________________ 5

2.1 Setting up the Instrument __________________________ 5

2.2 Safety Considerations _____________________________ 6

2.3 Arranging the Accessories _________________________ 7

2.3.1 Setting up the Rinsing Equipment .................................7

2.3.2 Tubing Fixation ..............................................................8

2.3.3 Magnetic Stirrers ...........................................................8

2.3.4 Sample Racks ...............................................................9

2.3.5 Mounting and Setting up the Titration Heads ..............10

2.4 Remote Connections _____________________________ 11

2.5 External Bus Connections ________________________ 13

3 SAMPLE RACKS ______________________________________ 14

4SWING HEAD ________________________________________ 16

4.1 Prerequisites ___________________________________ 16

4.2 Installing the Swing Head _________________________ 16

4.3 Accessories for the Titration Head _________________ 18

5 APPENDIX __________________________________________ 20

5.1 Technical Specifications __________________________ 20

5.1.1 717 Sample Changer ..................................................20

5.1.2 759 Swing Head ..........................................................22

5.2 Servicing and Maintenance _______________________ 23

5.3.1 Servicing ......................................................................23

5.3.2 Maintenance / Attendance...........................................23

5.3 Warranty and Conformity _________________________ 24

5.3.1 Warranty ......................................................................24

5.3.2 Certificate of Conformity and System Validation

for the 717 Sample Changer ...............................25

5.3.3 Certificate of Conformity and System Validation

for the 759 Swing Head .......................................27

5.4 Accessories ____________________________________ 29

5.5 Index __________________________________________ 34

1.1 Side View

717 Sample Changer, Overview 1

1 Overview

1.1 Side View

Safety note:

Do not operate the 717 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

Pump

Guide chain

Tower

Connectors

Stirrer rail

Distribution

head

Valve

1.2 Rear View

717 Sample Changer, Overview

The Connectors (side view):

Remote

Control

1 2 3 4

The remote socket serves the connection of Metrohm- or other

measuring instruments that communicate via a serial cable.

1.2 Rear View

Made by Metrohm Herisau Switzerland

Type 1.717._

Address

External Bus 0020/02 187

Remote

socket

Stirrer

sockets

Guide chain

Mounting screw

for splash protection

Pump 1

Pump 2

Valves

Plug cover

Connectors

Distribution head

1.3 Sensors

717 Sample Changer, Overview 3

The Connectors (rear):

Made by Metrohm Herisau

Switzerland

Type 1.717._

Address

External Bus 0120/02 187

1.3 Sensors

Beaker test

Front view

Each tower of the 717 Sample

Changer is equipped with a

beaker indicator to detect the

presence of a beaker in front

of the particular tower. This

infrared sensor detects many

different materials, if any ob-

ject is placed in correct posi-

tion.

Magnetic rack code indicator

The magnetic sensor to detect

the individual rack codes is

mounted below the sample

changer's turntable.

The 717 Sample Changer

should be initialized right after

every rack change, because 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 indicator.

Splash protection

Beaker indicator

Rack

Magnetic indicator

Manufacturing number

Magnet holder

External Bus

socket External Bus

address selector

1.4 The Sample Changer Models

717 Sample Changer, Overview

11.4.4 The Sample Changer Models

Model 2.717.0010 Model 2.717.0020 Model 2.717.0030

1 tower, 1 pump 1 tower, 2 pumps 1 tower, no pumps

2 stirrer connections 2 stirrer connections 2 stirrer connections

Model 2.717.0110 Model 2.717.0120 Model 2.717.0130

2 towers, 2 pumps 2 towers, 4 pumps 2 towers, no pumps

4 stirrer connections 4 stirrer connections 4 stirrer connections

Tower 1 Tower 2 Tower 1 Tower 2 Tower 1 Tower 2

2.1 Setting up the Instrument

717 Sample Changer, Installation 5

2 Installation

2.1 Setting up the Instrument

Packaging

The 717 Sample Changer is supplied with the accessories in

separate special packages designed to ensure maximum protec-

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

special packages guarantee damage-free transport of the instru-

ment, 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, page 29ff). In case of damage, see "Warranty",

page 24.

Setting up

The 717 Sample Changer is a rugged instrument and may be

used in rough environments such as laboratories and manufac-

turing plants. It must not be exposed to a corrosive atmosphere.

If the sample changer is operated in a rough environment, regular

maintenance is strongly recommended.

2.2 Safety Considerations

717 Sample Changer, Installation

2.2 Safety Considerations

If failure or malfunctioning occurs during operation of the

717 Sample 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 all main cables have been dis-

connected.

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.

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.

When peripheral instruments are connected to the 717 Sample

Changer, the sample changer and the instruments to be con-

nected 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

717 Sample Changer, Installation 7

2.3 Arranging the Accessories

2.3.1 Setting up the Rinsing Equipment

To mount the PTFE tubings to the pump inlets or outlets enlarge it

carefully using a screwdriver, a pen or another appropriate tool. A

piece of sand paper facilitates grasping of the tubing.

The arrangement of the tubing depends on the rinsing equipment.

Rotating nozzle

Using a changer model with one pump per tower only, the rotating

nozzle (6.2740.000) is recommended for rinsing. The Teflon tubing

is then directly connected to the rinsing pump (pump 1). The dis-

tribution head may be dismounted in this case.

Place the rotating nozzle vertically in the titration head with the aid

of a SGJ14/12 mm sleeve.

Spray nozzles

When using a changer model with two pumps per tower, spray

nozzles (6.2740.020) may be used in combination with an aspira-

tion tip M8 (6.1543.170). Insert the spray nozzles into the sloped

borings of the titration head. Use Teflon tubings to connect them

to the distribution head. Each of the four outlets of the distribution

head must be plugged. Plug unused outlets with an M6 thread

stopper (6.1446.040) to avoid splashing of liquid during rinsing.

Fix the tubings in the guide chain. Chain links may be removed if

necessary (see below).

Insert the aspiration tip vertically into a boring (SGJ9) of the Macro

Titration head. The Micro Titration head offers also a vertical bor-

ing for the placement of the aspiration tip. Connect the tip with the

Teflon 4/6 tubing (6.1805.510) and a screw connector 4/6 mm

(6.1820.030) to pump 2 (valve marked with 'ê'). During the rinsing

procedure, first the sample is sucked off then the electrode is

rinsed in the empty vessel.

2.3 Arranging the Accessories

717 Sample Changer, Installation

The pump heads of the diaphragm pump, the fittings and the cou-

pling rings are made of PVDF. PVDF is resistant to many chemi-

cals. Acetone, acetanhydride or dimethylformamide (DMF) should

not be used. The diaphragm, and the inner parts of the valves

consist of PTFE and are resistant to most chemicals.

If your samples contain solids (e.g. silver chloride) or sticking sub-

stances, you should use the 772 Peristaltic Pump Unit in combina-

tion with the 731 Relay Box instead of the diaphragm pump inte-

grated into the changer.

The PE canisters (6.1621.000) are suitable for aqueous solutions.

2.3.2 Tubing Fixation

In order to fix the tubing in

the guide chain any chain link

may be opened with a screw

driver or another appropriate

tool.

2.3.3 Magnetic Stirrers

Magnetic stirrers 2.741.0010

may be placed in any

position on the stirrer rail

beneath the rack.

Rack

Stirrer rail

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