Metrohm 772 User Manual

772 Pump Unit
Manual
8.772.8001EN
Metrohm AG CH-9100 Herisau Switzerland Phone +41 71 353 85 85 Fax +41 71 353 89 01 info@metrohm.com www.metrohm.com
772 Pump Unit
8.772.8001EN
Manual
07.2012 fpe
Teachware Metrohm AG CH-9100 Herisau teachware@metrohm.com
This documentation is protected by copyright. All rights reserved.
Although all the information given in this documentation has been checked with great care, errors cannot be entirely excluded. Should you notice any mistakes please send us your comments using the address given above.
Documentation in additional languages can be found on
http://documents.metrohm.com.
■■■■■■■■■■■■■■■■■■■■■■

Table of contents

1 Introduction 1
1.1 Instrument description ......................................................... 1
1.1.1 Model versions ........................................................................ 1
1.1.2 Connectors .............................................................................. 1
1.1.3 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 Flammable solvents and chemicals ........................................... 4
1.3.5 Recycling and disposal ............................................................. 4
2 Overview of the instrument 6
Table of contents
3 Installation 7
3.1 Setting up the instrument .................................................... 7
3.1.1 Packaging ................................................................................ 7
3.1.2 Checks .................................................................................... 7
3.1.3 Location .................................................................................. 7
3.2 Mounting the tubings .......................................................... 7
3.2.1 Mounting the pump tubing ..................................................... 7
3.2.2 Installing the inlet tubing and outlet tubing .............................. 9
3.3 Connecting the peristaltic pump ....................................... 10
3.3.1 Connection to a Sample Processor ......................................... 11
3.3.2 Connection to the 731 Relay Box .......................................... 11
4 Operation 14
5 Operation and maintenance 15
5.1 General notes ...................................................................... 15
5.1.1 Care ...................................................................................... 15
5.1.2 Maintenance by Metrohm Service .......................................... 15
5.2 Pump tubings ...................................................................... 16
5.2.1 Selecting the pump tubing ..................................................... 16
5.2.2 Suitability test for tubing materials ......................................... 17
5.2.3 Tubing dimensions ................................................................. 17
5.2.4 Tubing lifetime ...................................................................... 17
5.2.5 PharMed® pump tubing data sheet ....................................... 18
5.2.6 Viton® pump tubing data sheet ............................................ 19
772 Pump Unit
5.3 Tubings ................................................................................ 20
■■■■■■■■
III
Table of contents
■■■■■■■■■■■■■■■■■■■■■■
5.4 Quality Management and validation with Metrohm ....... 20
6 Troubleshooting 21
6.1 Problems ............................................................................. 21
7 Technical specifications 22
7.1 Peristaltic pump .................................................................. 22
7.2 Power supply ...................................................................... 22
7.3 Interfaces and connectors ................................................. 22
7.4 Safety specifications ........................................................... 22
7.5 Electromagnetic compatibility (EMC) ................................ 23
7.6 Ambient temperature ......................................................... 23
7.7 Reference conditions .......................................................... 23
7.8 Dimensions/material ........................................................... 24
8 Conformity and warranty 25
8.1 Quality Management Principles ........................................ 25
8.2 Warranty (Guarantee) ........................................................ 26
9 Accessories 28
9.1 Scope of delivery per model version ................................. 28
9.1.1 772 Pump Unit ...................................................................... 28
9.1.2 772 Pump Unit with aspiration equipment ............................. 29
9.1.3 772 Pump Unit with rinsing equipment .................................. 32
9.2 Optional accessories ........................................................... 35
9.2.1 772 Pump Unit ...................................................................... 35
9.2.2 772 Pump Unit with aspiration equipment ............................. 36
9.2.3 772 Pump Unit with rinsing equipment .................................. 36
Index 38
■■■■■■■■
IV
772 Pump Unit
■■■■■■■■■■■■■■■■■■■■■■

Table of figures

Figure 1 Front 772 Pump Unit ......................................................................... 6
Figure 2 Inserting the tubing olives ................................................................. 7
Figure 3 Installing the pump tubing ................................................................ 8
Figure 4 Fastening the pressure clamp in place ................................................ 8
Figure 5 Connecting the tubings ..................................................................... 9
Figure 6 Screwing the union nuts tightly ....................................................... 10
Figure 7 772 Pump Unit directly on the Sample Processor ............................. 11
Figure 8 772 Pump Unit via the Remote Box and 731 Relay Box .................... 12
Figure 9 Direction of rotation ........................................................................ 13
Figure 10 Calculation formula for the permeability (C) ..................................... 19
Table of figures
772 Pump Unit
■■■■■■■■
V
■■■■■■■■■■■■■■■■■■■■■■
1 Introduction

1.1 Instrument description

The 772 Pump Unit is a versatile peristaltic pump for conveying or evacu­ating liquid media. It was designed specifically for the production opera­tion and laboratory environment and enables a wide range of applica­tions. Unlike membrane pumps, pumping organic solvents or liquids with solids content is no problem for the 772 Pump Unit.
Therefore, the 772 Pump Unit is equally well suited for use in titration, e.g. for evacuating titration samples with silver halide precipitation and as a delivery pump in larger automation systems. By using the respective suit­able tubing material, a wide variety of tasks can be managed.
The flow rate of up to 600 mL/min opens up a wide range of applications.

1.1.1 Model versions

The 772 Pump Unit is available in the following three versions:

1 Introduction

2.772.0110
2.772.0120 772 Pump Unit with aspiration equip-
2.772.0130 772 Pump Unit with rinsing equipment
Each version includes different accessories according to its use (see Chap- ter 9, page 28).

1.1.2 Connectors

The 772 Pump Unit needs 16 - 24 V DC voltage.
Power is supplied to the pump via the direct connection to a Sample Pro­cessor (e.g. 814 or 815) or to the 731 Relay Box (connection via adapter cable 6.2160.010).

1.1.3 Intended use

The 772 Pump Unit is designed for usage in automated systems in analyti­cal laboratories.
This instrument is suitable for pumping chemicals and flammable samples. Use of the 772 Pump Unit therefore requires the user to have basic knowl­edge and experience in handling toxic and caustic substances. Knowledge with respect to the application of the fire prevention measures prescribed for laboratories is also mandatory.
772 Pump Unit
ment
772 Pump Unit
■■■■■■■■
1

1.2 About the documentation

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 opera­tion 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 sec­ond 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 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.
■■■■■■■■
2
Caution
This symbol draws attention to a possible damage of instruments or instrument parts.
772 Pump Unit
■■■■■■■■■■■■■■■■■■■■■■

1.3 Safety instructions

1.3.1 General notes on safety

Warning
This instrument may only be operated in accordance with the specifica­tions in this documentation.
This instrument has 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 Introduction
Note
This symbol marks additional information and tips.
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.
Mains voltage
Warning
An incorrect mains voltage can damage the instrument.
772 Pump Unit
Only operate this instrument with a mains voltage specified for it (see rear panel of the instrument).
■■■■■■■■
3
1.3 Safety instructions
Protection against electrostatic charges
Warning
Electronic components are sensitive to electrostatic charges and can be destroyed by discharges.
Do not fail to pull the mains cable out of the mains connection 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 connections. 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 manda­tory.

1.3.4 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.

1.3.5 Recycling and disposal

This product is covered by European Directive 2002/96/EC, WEEE – Waste from Electrical and Electronic Equipment.
■■■■■■■■
4
The correct disposal of your old equipment will help to prevent negative effects on the environment and public health.
772 Pump Unit
■■■■■■■■■■■■■■■■■■■■■■
1 Introduction
More details about the disposal of your old equipment can be obtained from your local authorities, from waste disposal companies or from your local dealer.
772 Pump Unit
■■■■■■■■
5

2 Overview of the instrument

1
2
3
4
5
6
7
■■■■■■■■■■■■■■■■■■■■■■
Figure 1 Front 772 Pump Unit
Status LED
1
For displaying the operating state.
Pressure clamp
3
For the counterpressure to the pump tubing.
Tubing clamp (outlet)
5
Connection cable
7
With M8 plug for connection to a Sample Processor.
Locking lever with clamping screw
2
Rotor
4
Tubing clamp (inlet)
6
■■■■■■■■
6
772 Pump Unit
■■■■■■■■■■■■■■■■■■■■■■
3 Installation

3.1 Setting up the instrument

3.1.1 Packaging

The instrument is supplied in highly protective special packaging together with the separately 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 com­plete 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.

3 Installation

Place the instrument in a location of the laboratory which is suitable for operation, free of vibrations, protected from corrosive atmosphere, and contamination by chemicals.
The instrument should be protected against excessive temperature fluctu­ations and direct sunlight.

3.2 Mounting the tubings

3.2.1 Mounting the pump tubing

Note
Selecting the correct pump tubing is very important for its function and lifetime (see Chapter 5, page 15).
Cut the pump tubing to a length of approx. 17 cm.
1
Insert the tubing olives (6.1820.050) into the two tubing ends.
2
772 Pump Unit
Figure 2 Inserting the tubing olives
■■■■■■■■
7
3.2 Mounting the tubings
1
2
3
4
5
■■■■■■■■■■■■■■■■■■■■■■
Clamp the pump tubing 1 into the pump head according to the
3
drawing below such that the tubing and the tubing olives are fas­tened by the tubing clips 2 and 3. The tubing must be as centered on the roller as possible.
Figure 3 Installing the pump tubing
Press on the pressure clamp 5 and fasten it in place using the locking
4
lever 4.
Figure 4 Fastening the pressure clamp in place
Tighten the clamping screw 4 so that the pump tubing cannot slip.
5
With the pump running, gently tighten the clamping screw until the
■■■■■■■■
8
772 Pump Unit
■■■■■■■■■■■■■■■■■■■■■■
liquid flows evenly. After a run-in period, correct the setting again if necessary.
Note
Do not clamp the pump tubing too tightly or apply too much pres­sure, as this causes greater wear to the pump tubing and the pump will generate excessive pump pressure.

3.2.2 Installing the inlet tubing and outlet tubing

As the inlet tubing and outlet tubing, two different tubing types are avail­able. Both tubings are included in the scope of delivery .
PVC tubing (6.1801.120), 2 x 2 m PTFE tubing (6.1812.000), 1 x 4 m
Note
3 Installation
Which of the two tubings to use depends largely on the solvent used. PVC tubing is more flexible and has the advantage of making less noise during the pumping operation. It must be noted that the PVC tubing is not resistant to solvents.
Install the inlet tubing and outlet tubing as follows:
Cut the inlet tubing and outlet tubing to the suitable length.
1
Connect the tubings to the tubing olives of the pump tubing using
2
union nuts.
772 Pump Unit
Figure 5 Connecting the tubings
■■■■■■■■
9

3.3 Connecting the peristaltic pump

■■■■■■■■■■■■■■■■■■■■■■
Note
To fasten PTFE tubings in place, you have to widen their openings (e.g. using a Phillips screwdriver). You can use a piece of sandpa­per to make the PTFE tubing easier to handle.
Do not heat the tubing ends to widen them, as otherwise the con­necting nipples can be damaged.
Screw the union nuts tightly to ensure a secure tubing connection.
3
Figure 6 Screwing the union nuts tightly
3.3 Connecting the peristaltic pump
Warning
Follow the instructions listed below for connecting to a control device. The instrument can be damaged if operated with the wrong supply voltage.
Voltage
The 772 Pump Unit needs 16 - 24 V DC voltage. It can be connected directly to Sample Processor models 814, 815, 855 or 864.
When using the 772 Pump Unit in an automation system with remote control, we recommend using a 731 Relay Box for the power supply.
■■■■■■■■
10
772 Pump Unit
■■■■■■■■■■■■■■■■■■■■■■
1 2

3.3.1 Connection to a Sample Processor

Plug the M8 plug into the socket on the Sample Processor provided for
this purpose.
3 Installation
Figure 7 772 Pump Unit directly on the Sample Processor
Sample Processor 814, 815, 855, 864
1
Instruments with Pump Connector.
2
Note
The Sample Processor 824 Easy Sample Changer does not have an M8 socket. However, the adapter cable 6.2160.010 can be used for the connection. For details about connecting the 772 Pump Unit to the adapter cable, refer to the manual for the 824 Easy Sample Changer.

3.3.2 Connection to the 731 Relay Box

Connect the 772 Pump Unit with connection via the Remote Box (6.2148.010) and the 731 Relay Box to a remote interface.
Connect the M8 plug (1-7) of the 772 Pump Unit to the corresponding
socket on the adapter cable.
Plug the adapter cable into low-voltage DC current output DC1 or DC2
of the 731 Relay Box.
772 Pump Unit
Peristaltic pump with M8 connector.
772 Pump Unit
■■■■■■■■
11
3.3 Connecting the peristaltic pump
1 2
3
4 5
6
■■■■■■■■■■■■■■■■■■■■■■
Figure 8 772 Pump Unit via the Remote Box and 731 Relay Box
Sample Processor 814, 815, 855, 864
1
Connection via remote interface.
Remote cable (6.2125.100)
3
Adapter cable (6.2160.010)
5
Ensure the correct polarity of the banana plugs.
The red plug (positive pole) belongs in the red socket, the black plug (negative pole) belongs in the black socket. Reversing the polarity of the connecting plugs also reverses the direction of pumping.
Note
Remote Box (6.2148.010)
2
731 Relay Box (2.731.0010)
4
772 Pump Unit
6
■■■■■■■■
12
772 Pump Unit
■■■■■■■■■■■■■■■■■■■■■■
1
2
3
3 Installation
Figure 9 Direction of rotation
Direction of rotation
1
Correct direction of rotor rotation with cor­rect polarity (clockwise).
Inlet
3
For information on controlling the 772 Pump Unit using the 731 Relay Box and a suitable control device, refer to the manual of the 731 Relay Box.
Note
Outlet
2
772 Pump Unit
■■■■■■■■
13

4 Operation

■■■■■■■■■■■■■■■■■■■■■■
The 772 Pump Unit does not have its own operating units. It is operated and controlled via the main instrument in the linked system.
■■■■■■■■
14
772 Pump Unit
■■■■■■■■■■■■■■■■■■■■■■
5 Operation and maintenance

5.1 General notes

5.1.1 Care

The 772 Pump Unit requires appropriate care. Excess contamination of the instrument may result in functional disruptions and a reduction in the life­time of the sturdy mechanics and electronics.
Spilled chemicals and solvents should be removed immediately. Above all, the plug connections on the rear of the instrument (in particular the mains connection socket) should be protected from contamination.
Caution
Although this is extensively prevented by design measures, the mains plug should be unplugged immediately if aggressive media have pene­trated the inside of the instrument, so as to avoid serious damage to the instrument electronics. In such cases, Metrohm Service must be informed.

5 Operation and maintenance

5.1.2 Maintenance by Metrohm Service

Maintenance of the 772 Pump Unit is best carried out as part of an annual service, which is performed by specialist personnel of the Metrohm com­pany. If working frequently with caustic and corrosive chemicals, a shorter maintenance interval could be necessary.
Metrohm Service offers every form of technical advice for maintenance and service of all Metrohm instruments.
772 Pump Unit
■■■■■■■■
15

5.2 Pump tubings

5.2 Pump tubings
Aggressive liquids
Leaking liquids can pose a risk of injury and damage instruments.
Use suitable tubing only. Regularly check tubing for proper fastening and for damage and
wear.
In every case, the user has sole responsibility with regard to suitability and safety of pump tubing. Therefore, it is extremely important that before each use, the safety and effectiveness of tubing is tested based on application-specific laboratory, field or clinical tests.
■■■■■■■■■■■■■■■■■■■■■■
Warning
Note

5.2.1 Selecting the pump tubing

The most important decision when using peristaltic pumps is the selection of suitable tubing material. Always use tubings particularly intended for peristaltic pumps.
The 772 Pump Unit is shipped with PharMed® pump tubing (6.1826.100, ø 6.4/9.6 mm, see Chapter 5.2.5) made of thermoplastic polypropylene, which is highly suitable for aqueous media.
If you need other tubings for your application, take care to ensure the fol­lowing points when evaluating the pump tubings:
Chemical resistance Pressure build-up in the pump tubing Sterilizability Temperature of the pump medium and the environment Viscosity of the liquid Permeability of the pump tubing Demanded flow rate Tubing dimensions
We recommend using PVC, silicone, Viton® and PharMed® as the tubing materials. Contact your laboratory dealer for information on suitable prod­ucts and their data sheets.
■■■■■■■■
16
772 Pump Unit
■■■■■■■■■■■■■■■■■■■■■■

5.2.2 Suitability test for tubing materials

Place a piece of the tubing in question for 48 hours in a closed container filled with the liquid in question. Then examine the piece of tubing for signs of swelling, embrittlement or other damage.

5.2.3 Tubing dimensions

Note
Use tubing with a wall thickness of 1.6 mm only.
The largest usable inner diameter is 6.4 mm.

5.2.4 Tubing lifetime

The pump tubing has a limited lifetime and therefore has to be replaced regularly. The following are examples of factors that can influence the life­time of tubing in peristaltic pumps:
5 Operation and maintenance
Chemical resistance of the pump tubing Pump rate (rotational speed) Properties of the pumped liquid Outlet pressure Ambient temperature Shearing force of the rollers Twisted or kinked tubing Tubing too long Wall thickness of 1.6 mm not complied with
772 Pump Unit
■■■■■■■■
17
5.2 Pump tubings
■■■■■■■■■■■■■■■■■■■■■■
Note
If the tubing is not tightened sufficiently around the rotor, this has a
negative impact on the lifetime of the tubing, as in this case the tub­ing tends to fold up. If the tubing is tightened too much, the flow is restricted.
The tubing will last longer if the pressure clamp is detached when
the pump is not in use.
In order to achieve good repeatability of flow rate following a
change in tubing, it is imperative that you always select the same tubing length.
Before changing tubing:
Pump all of the liquid out of the tubing so that none remains. Pull out the connection cable of the peristaltic pump to prevent acci-
dental starting of the pump.
Detach the pressure clamp, open the tubing clamps and remove the
tubing.

5.2.5 PharMed® pump tubing data sheet

Physical properties Polypropylene-based thermoplastic elastomer, contains
plasticizer
Dimensions Inner diameter = 6.4 mm
Wall thickness 1.6 mm
Advantages Ideal for aqueous media
Impermeable to normal light and UV radiation
Tubing can be welded, glued and thermoformed.
Very long lifetime
Restrictions Additives can be dissolved out by the pumped medium.
Applications: Acids
Bases
Solvents
Pressure
Vacuum
Viscous media
Sterile media
Good resistance
Good resistance
Not suitable
Well suited
Very well suited
Well suited
Very well suited
■■■■■■■■
18
Temperature range –60 - +130 °C
772 Pump Unit
■■■■■■■■■■■■■■■■■■■■■■
5 Operation and maintenance
Permeability (C) for:
(see Figure 10, page 19)
CO
O
N
Corresponds to the fol­lowing standards:
USP Class VI
FDA 21CFR177.2600
NSF (Standard 51)
Cleaning/sterilization The tubing can be sterilized in the autoclave without
being damaged.
Figure 10 Calculation formula for the permeability (C)

5.2.6 Viton® pump tubing data sheet

Physical properties Viton®; rigid, impermeable, black
Dimensions Inner diameter = 6.4 mm
Wall thickness 1.6 mm
2
2
2
1,200
200
80
Advantages High chemical resistance
Low gas permeability
Wide temperature range
Restrictions Limited lifetime
Applications: Acids
Bases
Solvents
Pressure
Vacuum
Viscous media
Sterile media
Temperature range –31 °C - +204 °C
Permeability (C) for: CO
Corresponds to the fol-
O
2
N
2
None
2
lowing standards:
Outstanding
Outstanding
Limited
Not recommended
Good
Good
Satisfactory
38
14
5
772 Pump Unit
Cleaning/sterilization Not recommended
■■■■■■■■
19

5.3 Tubings

■■■■■■■■■■■■■■■■■■■■■■
5.3 Tubings
The tubing requires regular inspection in order to work properly:
Do not kink PTFE tubing. Ensure resistance to solvents. Check the tubing regularly for any damage.

5.4 Quality Management and validation with Metrohm

Quality Management
Metrohm offers you comprehensive support in implementing quality man­agement measures for instruments and software. Further information on this can be found in the brochure «Quality Management with Metrohm» available from your local Metrohm agent.
Validation
Please contact your local Metrohm agent for support in validating instru­ments and software. Here you can also obtain validation documentation to provide help for carrying out the Installation Qualification (IQ) and the Operational Qualification (OQ). IQ and OQ are also offered as a service by the Metrohm agents. In addition, various application bulletins are also available on the subject, which also contain Standard Operat- ing Procedures (SOP) for testing analytical measuring instruments for reproducibility and correctness.
Maintenance
Electronic and mechanical functional groups in Metrohm instruments can and should be checked as part of regular maintenance by specialist per­sonnel from Metrohm. Please ask your local Metrohm agent regarding the precise terms and conditions involved in concluding a corresponding maintenance agreement.
Note
You can find information on the subjects of quality management, vali­dation and maintenance as well as an overview of the documents cur­rently available at www.metrohm.com/com/ under Support.
■■■■■■■■
20
772 Pump Unit
■■■■■■■■■■■■■■■■■■■■■■
6 Troubleshooting

6.1 Problems

Problem Cause Remedy

6 Troubleshooting

The flow is not set correctly.
The liquid is not aspirated, but just "bubbles" instead.
The peristaltic pump is not running.
The peristaltic pump is pumping too little or not at all.
The tubing connec­tion of the inlet tub­ing and/or outlet tubing is dripping.
The flow is too strong or too weak.
The inlet tubing and the outlet tubing have been switched.
The connecting cable is not connected.
The pressure clamp is set insufficiently or not at all.
The tubing clamp is pinch­ing off the tubing.
The tubings are not screwed on correctly.
Loosen or tighten the locking lever with the clamping screw.
Switch the tubings so that the inlet tubing goes into the solution and the outlet tubing goes into the waste canister.
Connect the connecting cable.
Set the correct pressure using the locking lever and clamping screw.
Fasten the tubing end piece and the tubing olive in the tubing clip correctly. The tubing clamp must clamp the tubing in the area of the tubing olive.
Check the screw connectors.
The tubing connec­tion of the pump tubing is dripping or spraying.
772 Pump Unit
The pressure is too high. Loosen the locking lever of the pressure clamp
slightly.
If necessary, also use a cable tie to tie down the cable ends at the tubing olives.
■■■■■■■■
21

7.1 Peristaltic pump

7 Technical specifications

7.1 Peristaltic pump
■■■■■■■■■■■■■■■■■■■■■■
Direction of rota-
Clockwise
tion
Rotational speed 160 - 250 rpm, at 20 V / 200 mA
Flow rate 400 - 600 mL/min
(depending on the supply voltage and the selection of pump tubing)
Pump tubings
Wall thickness 1.6 mm
Inner diameter 0.8 - 6.4 mm
Material Depending on the medium.

7.2 Power supply

Voltage
Power consump­tion
16 - 24 V DC
550 mA

7.3 Interfaces and connectors

The 772 Pump Unit does not have any control interfaces. It is operated and controlled via the power supply.

7.4 Safety specifications

This instrument fulfills the following electrical safety requirements:
CE designation in accordance with the EU directives:
2006/95/EC (Low Voltage Directive, LVD) 2004/108/EC (EMC Directive, EMC)
Design and testing EN/IEC/UL 61010-1
CSA-C22.2 No. 61010-1 Protection class III EN/IEC 60529 Degree of protection IP20
Safety instructions This document contains safety instructions which have to be followed
by the user in order to ensure safe operation of the instrument.
■■■■■■■■
22
772 Pump Unit
■■■■■■■■■■■■■■■■■■■■■■

7.5 Electromagnetic compatibility (EMC)

Emission
Standards fulfil­led
Immunity
Standards fulfil­led
EN/IEC 61326-1 EN/IEC 61000-6-3 EN 55011 / CISPR 11
EN/IEC 61326-1 EN/IEC 61000-6-2 EN/IEC 61000-4-2 EN/IEC 61000-4-3 EN/IEC 61000-4-4 EN/IEC 61000-4-5 EN/IEC 61000-4-6 EN/IEC 61000-4-11 EN/IEC 61000-4-14 EN/IEC 61000-4-28
7 Technical specifications

7.6 Ambient temperature

Nominal function range
Transport and storage
+5 - +45 °C
–40 - +70 °C

7.7 Reference conditions

Ambient tempera­ture
Relative humidity 60%
+25 °C (±3 °C)
772 Pump Unit
■■■■■■■■
23

7.8 Dimensions/material

7.8 Dimensions/material
Width 100 mm
Height 210 mm
Depth 260 mm
Weight 3.20 kg (without accessories)
Material
Housing, upper part
Bottom part of housing
Polyurethane, coated
Steel sheet, stove-enameled
■■■■■■■■■■■■■■■■■■■■■■
■■■■■■■■
24
772 Pump Unit
■■■■■■■■■■■■■■■■■■■■■■
8 Conformity and warranty

8.1 Quality Management Principles

Metrohm Ltd. holds the ISO 9001:2000 Certificate, registration number 10872-02, issued by SQS (Swiss Association for Quality and Management Systems). Internal and external audits are carried out periodically to assure that the standards defined by Metrohm’s QM Manual are maintained.
The steps involved in the design, manufacture and servicing of instruments are fully documented and the resulting reports are archived for ten years. The development of software for PCs and instruments is also duly docu­mented and the documents and source codes are archived. Both remain the possession of Metrohm. A non-disclosure agreement may be asked to be provided by those requiring access to them.
The implementation of the ISO 9001:2000 quality management system is described in Metrohm’s QM Manual, which comprises detailed instruc­tions on the following fields of activity:

8 Conformity and warranty

Instrument development
The organization of the instrument design, its planning and the intermedi­ate controls are fully documented and traceable. Laboratory testing accompanies all phases of instrument development.
Software development
Software development occurs in terms of the software life cycle. Tests are performed to detect programming errors and to assess the program’s functionality in a laboratory environment.
Components
All components used in the Metrohm instruments have to satisfy the qual­ity standards that are defined and implemented for our products. Suppli­ers of components are audited by Metrohm as the need arises.
Manufacture
The measures put into practice in the production of our instruments guar­antee a constant quality standard. Production planning and manufacturing procedures, maintenance of production means and testing of compo­nents, intermediate and finished products are prescribed.
Customer support and service
Customer support involves all phases of instrument acquisition and use by the customer, i.e. consulting to define the adequate equipment for the analytical problem at hand, delivery of the equipment, user manuals, train-
772 Pump Unit
■■■■■■■■
25

8.2 Warranty (Guarantee)

ing, after-sales service and processing of customer complaints. The Metrohm service organization is equipped to support customers in imple­menting standards such as GLP, GMP, ISO 900X, in performing Opera­tional Qualification and Performance Verification of the system compo­nents or in carrying out the System Validation for the quantitative determi­nation of a substance in a given matrix.
8.2 Warranty (Guarantee)
Metrohm guarantees that the deliveries and services it provides are free of errors in materials, design or manufacturing.
The general warranty period is 36 months (exclusions below) from the date of delivery or 18 months in the event of continuous operation. The warranty remains valid on the condition that the servicing is provided by a Service Organization authorized by Metrohm at defined intervals and with a defined scope.
The warranty period for anion suppressors is 120 months from the date of delivery or 60 months in the event of continuous operation.
■■■■■■■■■■■■■■■■■■■■■■
The warranty period for IC separation columns is 90 days after start-up.
For third-party components that are recognizable as such, the manufac­turer's warranty regulations apply.
Consumables and materials with limited storage life and glass breakage in the case of electrodes or other glass parts are excluded from the warranty.
Warranty claims cannot be asserted if the customer has failed to meet his payment obligations according to schedule.
During the warranty period, Metrohm undertakes either to replace free of charge or to credit the purchaser for any assemblies or components that can be shown to be faulty. Any transport or customs fees that may apply are the ordering party’s responsibility.
The precondition for this is that the ordering party must use the Return Material Authorization (RMA) to report the faulty part, along with specifi­cation of the article number, the article designation, an adequate error description, the delivery date and (if applicable) the serial number or the chip data, respectively. In addition, the ordering party undertakes to store the faulty part for at least 24 months in accordance with current storage directives (in compliance with ESD guidelines) and to hold it in readiness for onsite inspection or for return shipment to Metrohm. Metrohm reserves the right to invoice the ordering party for these articles, including retroactively, in the event of noncompliance with these pre-conditions.
■■■■■■■■
26
The original warranty periods for the original part apply to parts that are replaced or repaired under the above-referenced warranties (no extension of the warranty period).
772 Pump Unit
■■■■■■■■■■■■■■■■■■■■■■
8 Conformity and warranty
Deficiencies arising from circumstances that are not the responsibility of Metrohm, such as improper storage or improper use, etc., are expressly excluded from the warranty.
Metrohm also offers a 120-month spare parts availability guarantee and a 60-month PC software support warranty, calculated from the date on which the product is withdrawn from the market. The content of this war­ranty is the ability of the customer to obtain functioning spare parts or appropriate software support at market prices during the time of the war­ranty period.
If Metrohm AG is unable to meet this obligation due to circumstances beyond the control of Metrohm AG, then the ordering party shall be offered alternative solutions at preferential conditions.
772 Pump Unit
■■■■■■■■
27

9.1 Scope of delivery per model version

9 Accessories

Note
Subject to change without notice.
9.1 Scope of delivery per model version
Note
After receiving the instrument, check the shipment to ensure that it is complete. In doing so, check the version (order number) of your 772 Pump Unit.
■■■■■■■■■■■■■■■■■■■■■■

772 Pump Unit

2.772.0110
Qty.
Order no. Description
1 1.772.0110 Pump Unit
Peristaltic pump for direct connection to Sample Processors.
2 6.1801.120 PVC tubing 4 mm / 6 mm / 2 m
Material: PVC (transparent) Outer diameter (mm): 6 Inner diameter (mm): 4 Length (m): +2
1 6.1812.000 PTFE tubing 4 mm / 6 mm / 4 m
Material: PTFE Outer diameter (mm): 6 Inner diameter (mm): 4
■■■■■■■■
28
772 Pump Unit
■■■■■■■■■■■■■■■■■■■■■■
Qty. Order no. Description
2 6.1820.050 Screw connector
For 6.1826.010 pump tubing, to peristaltic pumps.
1 6.1826.100 PP pump tubing 6.4 mm / 1 m
Replaces the pump tubing used with the 772 Pump Unit.
Material: PP Outer diameter (mm): 9.6 Inner diameter (mm): 6.4 Length (m): 1
9 Accessories
1 6.1828.000 PVDF connection nipple
For canister 6.1621.000.
Material: PVDF
1 8.772.8001EN Manual for 772 Pump Unit

9.1.2 772 Pump Unit with aspiration equipment

2.772.0120
Qty.
Order no. Description
1 1.772.0110 Pump Unit
Peristaltic pump for direct connection to Sample Processors.
772 Pump Unit
■■■■■■■■
29
9.1 Scope of delivery per model version
Qty. Order no. Description
1 6.1446.160 Thermometer plug / B-14/15 / oblique insert
For oblique position of inserts in the titration head 6.1458.010.
Material: PTFE Height (mm): 21 Outer diameter (mm): 13 Ground-joint size: B-14/15
1 6.1543.170 Aspiration tip / M8 thread
Aspiration tip for the Sample Processors.
Material: PTFE Length (mm): 198
■■■■■■■■■■■■■■■■■■■■■■
1 6.1621.000 Canister / 10 L
As rinsing or waste canister in automated systems.
Material: PE Width (mm): 265 Height (mm): 400 Volume (mL): 10,000
2 6.1801.120 PVC tubing / 4 mm / 6 mm / 2 m
Material: PVC (transparent) Outer diameter (mm): 6 Inner diameter (mm): 4 Length (m): 2
■■■■■■■■
30
772 Pump Unit
■■■■■■■■■■■■■■■■■■■■■■
Qty. Order no. Description
1 6.1805.510 PTFE tubing / M8 / 60 cm
With kink protection.
Material: PTFE Inner diameter (mm): 3 Length (mm): 600
1 6.1812.000 PTFE tubing 4 mm / 6 mm / 4 m
Material: PTFE Outer diameter (mm): 6 Inner diameter (mm): 4
9 Accessories
2 6.1820.050 Screw connector
For 6.1826.010 pump tubing, to peristaltic pumps.
772 Pump Unit
■■■■■■■■
31
9.1 Scope of delivery per model version
Qty. Order no. Description
1 6.1820.070 Coupling 4 mm / 6 mm / M8 inner
For extending aspiration tubing in automated systems. Connects the M8 aspiration tubing directly to the PTFE tubing 6.1812.000.
Material: PTFE
1 6.1826.100 PP pump tubing 6.4 mm / 1 m
Replaces the pump tubing used with the 772 Pump Unit.
Material: PP Outer diameter (mm): 9.6 Inner diameter (mm): 6.4 Length (m): 1
■■■■■■■■■■■■■■■■■■■■■■
1 6.1828.000 PVDF connection nipple
For canister 6.1621.000.
Material: PVDF
1 8.772.8001EN Manual for 772 Pump Unit

9.1.3 772 Pump Unit with rinsing equipment

2.772.0130
Qty.
Order no. Description
1 1.772.0110 Pump Unit
Peristaltic pump for direct connection to Sample Processors.
■■■■■■■■
32
772 Pump Unit
■■■■■■■■■■■■■■■■■■■■■■
Qty. Order no. Description
1 6.1621.000 Canister / 10 L
As rinsing or waste canister in automated systems.
Material: PE Width (mm): 265 Height (mm): 400 Volume (mL): 10,000
2 6.1801.120 PVC tubing / 4 mm / 6 mm / 2 m
Material: PVC (transparent) Outer diameter (mm): 6 Inner diameter (mm): 4 Length (m): 2
9 Accessories
3 6.1805.060 FEP tubing / M6 / 60 cm
Kink-proof and protected against light.
Material: FEP Inner diameter (mm): 2 Length (mm): 600
1 6.1808.170 Distributor piece for rinsing and aspirating
for Sample Processors
Distributor piece for installation on Sample Processors for rinsing and aspirating when using externally connected pumps.
772 Pump Unit
■■■■■■■■
33
9.1 Scope of delivery per model version
Qty. Order no. Description
1 6.1812.000 PTFE tubing 4 mm / 6 mm / 4 m
Material: PTFE Outer diameter (mm): 6 Inner diameter (mm): 4
2 6.1820.050 Screw connector
For 6.1826.010 pump tubing, to peristaltic pumps.
■■■■■■■■■■■■■■■■■■■■■■
1 6.1826.100 PP pump tubing 6.4 mm / 1 m
Replaces the pump tubing used with the 772 Pump Unit.
Material: PP Outer diameter (mm): 9.6 Inner diameter (mm): 6.4 Length (m): 1
1 6.1828.000 PVDF connection nipple
For canister 6.1621.000.
Material: PVDF
■■■■■■■■
34
772 Pump Unit
■■■■■■■■■■■■■■■■■■■■■■
Qty. Order no. Description
3 6.2740.020 Spray nozzle
For the fine-spraying of the rinsing solution.
Material: ETFE Outer diameter (mm): 10 Length (mm): 47
1 8.772.8001EN Manual for 772 Pump Unit

9.2 Optional accessories

9 Accessories

772 Pump Unit

2.772.0110
Order no.
6.1826.160 Viton® pump tubing
For peristaltic pumps.
Notes on material: Viton® Outer diameter (mm): 6.4 Length (m): 1
6.5323.010 VA rinsing equipment for pump units
VA rinsing equipment for automatic rinsing of the measuring container in the VA stand for use with pump units.
6.2160.010 Adapter cable / 2 m / M8 socket / 2 x plug B
Adapter cable / 2 m / M8 socket / 2 x plug B for 772 Pump Unit.
Description
8.772.3001EN Declaration of Conformity for 772 Pump Unit
772 Pump Unit
■■■■■■■■
35
9.2 Optional accessories
Order no. Description

9.2.2 772 Pump Unit with aspiration equipment

2.772.0120
Order no. Description
6.1826.160 Viton® pump tubing
For peristaltic pumps.
Notes on material: Viton® Outer diameter (mm): 6.4 Length (m): 1
6.2160.010 Adapter cable / 2 m / M8 socket / 2 x plug B
■■■■■■■■■■■■■■■■■■■■■■
Adapter cable / 2 m / M8 socket / 2 x plug B for 772 Pump Unit.
8.772.3001EN Declaration of Conformity for 772 Pump Unit

9.2.3 772 Pump Unit with rinsing equipment

2.772.0130
Order no.
6.1826.160 Viton® pump tubing
For peristaltic pumps.
Notes on material: Viton® Outer diameter (mm): 6.4 Length (m): 1
Description
■■■■■■■■
36
772 Pump Unit
■■■■■■■■■■■■■■■■■■■■■■
Order no. Description
6.2160.010 Adapter cable / 2 m / M8 socket / 2 x plug B
Adapter cable / 2 m / M8 socket / 2 x plug B for 772 Pump Unit.
8.772.3001EN Declaration of Conformity for 772 Pump Unit
9 Accessories
772 Pump Unit
■■■■■■■■
37

Index

Index
■■■■■■■■■■■■■■■■■■■■■■
C
Connect
731 Relay Box .................... 11
Peristaltic pump .................. 10
Sample Processor ............... 11
D
Dimensions .............................. 24
E
Electrostatic charge .................... 4
F
Front of the instrument .............. 6
G
GLP .......................................... 20
Guarantee ................................ 26
I
Instrument description ................ 1
M
Mains voltage ............................. 3
Material .................................... 24
Model versions ........................... 1
O
Operation ................................. 14
Optional accessories ................. 35
P
Peristaltic pump
Direction of rotation ........... 22
Flow rate ............................ 22
Power supply
Power consumption ........... 22
Voltage .............................. 22
Problems .................................. 21
Pump tubing ............................ 16
Dimensions ......................... 17
Lifetime .............................. 17
Mount .................................. 7
Select ................................. 16
Suitability test ..................... 17
Q
Quality Management ................ 20
S
Safety instructions ...................... 3
Scope of delivery ...................... 28
Service ....................................... 3
Service Agreement ................... 20
Standards ........................... 22, 23
T
Tubing
Maintenance ...................... 20
V
Validation ................................. 20
W
Warranty .................................. 26
■■■■■■■■
38
772 Pump Unit
Loading...