Metrohm 772 Manuel utilisateur
772 Pump Unit
Manual
8.772.8001EN / 2019-11-29
Metrohm AG
CH-9100 Herisau
Switzerland
Phone +41 71 353 85 85
Fax +41 71 353 89 01
www.metrohm.com
772 Pump Unit
Manual
8.772.8001EN / 2019-11-29
Technical Communication
Metrohm AG
CH-9100 Herisau
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
772 Pump Unit ￭￭￭￭￭￭￭￭ III
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
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
5.3 Tubings ................................................................................ 20
Table of contents ￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭
IV ￭￭￭￭￭￭￭￭ 772 Pump Unit
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 Ambient temperature ......................................................... 22
7.5 Reference conditions .......................................................... 23
7.6 Dimensions/material ........................................................... 23
8 Accessories 24
Index 25
￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭ Table of figures
772 Pump Unit ￭￭￭￭￭￭￭￭ V
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
￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭ 1 Introduction
772 Pump Unit ￭￭￭￭￭￭￭￭ 1
1 Introduction
1.1 Instrument description
The 772 Pump Unit is a versatile peristaltic pump for conveying or evacu-
ating liquid media. It was designed specifically for the production opera-
tion and laboratory environment and enables a wide range of applica-
tions. 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 suit-
able 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:
2.772.0110 772 Pump Unit
2.772.0120 772 Pump Unit with aspiration equip-
ment
2.772.0130 772 Pump Unit with rinsing equipment
Each version includes different accessories according to its use (see chap-
ter 8, page 24).
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 Pro-
cessor (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 analyti-
cal laboratories.
This instrument is suitable for pumping chemicals and flammable samples.
Use of the 772 Pump Unit therefore requires the user to have basic knowl-
edge 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.
1.2 About the documentation ￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭
2￭￭￭￭￭￭￭￭ 772 Pump Unit
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
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.
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