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CONTENTS
Page
1. General 3
1.1 Introduction 3
1.2 Service documentation 3
2. Installation data 4
3. Installation sketch 4
4. General information 5
4.1 Applications 5
4.2 Warranty 5
5. Safety 5
5.1 Identification of safety instructions in this manual 5
5.2 Qualification and training of personnel 5
5.3 Risks when safety instructions are not observed 5
5.4 Safety-conscious working 5
5.5 Safety instructions for the operator/user 5
5.6 Safety instructions for maintenance, inspection and
installation work 5
5.7 Unauthorised modification and manufacture of
spare parts 5
5.8 Improper operating methods 6
5.9 Safety of the system in the event of a failure
in the dosing system 6
6. Technical data 6
6.1 Identification 6
6.2 Type key 7
6.3 Pump performance 8
6.4 Suction heights 9
6.5 Ambient and operating conditions 10
6.6 Dosing medium 10
6.7 Electrical data 10
6.8 AR control unit 10
6.9 Materials 11
6.10 Weights 11
6.11 Dimensional sketches 12
7. Transport and storage 13
7.1 Delivery 13
7.2 Intermediate storage 13
7.3 Unpacking 13
7.4 Return 13
8. Installation 14
8.1 Optimum installation 14
8.2 Installation tips 14
8.3 Mounting 15
8.4 Tube / pipe lines 15
8.5 Connecting the suction and discharge lines 15
9. Electrical connections 16
9.1 Versions with mains plug 16
9.2 Versions without mains plug 16
10. Commissioning 17
10.1 Checks before start-up 17
10.2 Start-up 17
11. Operation 17
11.1 Description of the pump 17
11.2 Switching on/off 17
11.3 Adjusting the dosing flow via the stroke length 18
11.4 Stroke-length adjustment 18
11.5 Adjustment of stroke rate using a frequency converter 18
11.6 Using the AR control unit 18
12. Operation with other electronics 18
12.1 Electronics version stroke sensor 18
13. Integral relief valve 19
13.1 Function 19
13.2 Permissible media 19
13.3 Connections 19
13.4 Setting of opening pressure 19
13.5 Venting 19
13.6 Fault finding chart 19
14. Maintenance 20
14.1 General notes 20
14.2 Changing the gear grease 20
14.3 Cleaning the suction and discharge valves 20
14.4 Maintenance of the relief valve 20
14.5 Replacing the diaphragm 21
15. Fault finding chart 22
16. Dosing curves 23
17. Disposal 27
1. General
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 the
nearest Grundfos Alldos company.
1.2 Service documentation
If you have any questions, please contact the nearest Grundfos
Alldos company or service workshop.
Warning
These complete installation and operating
instructions are also available on
www.Grundfosalldos.com.
Prior to installation, read these installation and
operating instructions. Installation and operation
must comply with local regulations and accepted
codes of good practice.
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