Grundfos DMX 221 Series, Installation And Operating Instructions Manual

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English (GB)
4
English (GB) Installation and operating instructions
Original installation and operating instructions.
CONTENTS
Page
1. General information
1.1 Introduction
These installation and operating instructions contain all the
information required for starting up and handling the DMX 221
dosing pump.
If you require further information or if any problems arise, which
are not described in detail in this manual, please contact
Grundfos.
1.2 Applications
The DMX 221 pump is suitable for liquid, non-abrasive and
non-flammable media strictly in accordance with the instructions
in this manual.
The DMX 221 dosing pumps have
not been approved according
to the EC directive 94/9/EC, the so-called ATEX directive.
The application of these pumps in potentially explosive
environments according to ATEX directive is therefore not
permitted.
1.3 Warranty
A guarantee claim in accordance with our general terms of sale
and delivery is only valid if the following requirements are fulfilled:
• The product is used in accordance with the information within
this manual.
• The product is not dismantled or incorrectly handled.
• The maintenance is carried out by authorised and qualified
personnel.
2. Safety
This manual contains general instructions that must be observed
during installation, operation and maintenance of the pump.
This manual must therefore be read by the installation engineer
and the relevant qualified personnel/operators prior to installation
and start-up, and must be available at the installation location of
the pump at all times.
It is not only the general safety instructions given in this "Safety"
section that must be observed, but also all the specific safety
instructions given in other sections.
2.1 Identification of safety instructions in this manual
If the safety instructions or other advice in this manual are not
observed, it may result in personal injury or malfunction and
damage to the pump. The safety instructions and other advice are
identified by the following symbols:
1. General information
4
1.1 Introduction 4
1.2 Applications 4
1.3 Warranty
4
2. Safety 4
2.1 Identification of safety instructions in this manual 4
2.2 Qualification and training of personnel 5
2.3 Risks when safety instructions are not observed 5
2.4 Safety-conscious working 5
2.5 Safety instructions for the operator/user 5
2.6 Safety instructions for maintenance, inspection and
installation work
5
2.7 Unauthorised modification and manufacture of spare
parts
5
2.8 Improper operating methods 5
2.9 Safety of the system in the event of a failure in the
dosing system
5
3. Technical data 5
3.1 Identification
5
3.2 Type key 6
3.3 Pump performance 7
3.4 Suction heights
8
3.5 Ambient and operating conditions 9
3.6 Dosing medium 9
3.7 Electrical data
9
3.8 AR control unit
9
3.9 Materials 10
3.10 Weights 10
3.11 Dimensional sketches
11
4. Transport and storage 12
4.1 Delivery 12
4.2 Intermediate storage
12
4.3 Unpacking 12
4.4 Return 12
5. Installation 13
5.1 Optimum installation 13
5.2 Installation tips 13
5.3 Mounting 14
5.4 Hose / pipe lines
14
5.5 Connecting the suction and discharge lines 14
6. Electrical connections 15
6.1 Versions with mains plug
15
6.2 Versions without mains plug 15
7. Commissioning 16
7.1 Checks before start-up
16
7.2 Start-up 16
8. Operation 16
8.1 Description of the pump 16
8.2 Switching on/off
16
8.3 Adjusting the dosing flow via the stroke length 17
8.4 Stroke-length adjustment 17
8.5 Adjustment of stroke rate using a frequency converter 17
8.6 Using the AR control unit 17
9. Operation with other electronics 17
9.1 Electronics version stroke sensor
17
9.2 Electronic diaphragm leakage sensor
18
10. Integral relief valve 20
10.1 Function 20
10.2 Permissible media
20
10.3 Connections 20
10.4 Setting of opening pressure 20
10.5 Venting
20
10.6 Fault finding chart 21
11. Maintenance 21
11.1 General notes
21
11.2 Cleaning and maintenance intervals 21
11.3 Cleaning the suction and discharge valves 21
11.4 Maintenance of the relief valve 21
11.5 Replacing the diaphragm 22
12. Fault finding chart 23
13. Dosing curves 24
14. Disposal
28
Warning
These complete installation and operating
instructions are also available on
www.grundfos.com.
Prior to installation, read these installation and
operating instructions. Installation and operation
must comply with local regulations and accepted
codes of good practice.
Warning
Other applications or the operation of pumps in
ambient and operating conditions, which are not
approved, are considered improper and are not
permitted. Grundfos accepts no liability for any
damage resulting from incorrect use.