Table of Contents
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CONTENTS
1.
1.1
1.2
2.
3.
4.
4.1
4.2
5.
5.1
5.2
5.3
5.4
5.5
5.6
5.7
5.8
5.9
6.
6.1
6.2
6.3
6.4
6.5
6.6
6.7
6.8
6.9
6.10
6.11
7.
7.1
7.2
7.3
7.4
8.
8.1
8.2
8.3
8.4
8.5
9.
9.1
9.2
10.
10.1
10.2
11.
11.1
11.2
11.3
11.4
11.5
11.6
12.
12.1
13.
13.1
13.2
13.3
13.4
13.5
13.6
14.
Maintenance
14.1
General notes
Page
14.2
Changing the gear grease
3
14.3
Cleaning the suction and discharge valves
3
14.4
Maintenance of the relief valve
3
14.5
Replacing the diaphragm
4
15.
Fault finding chart
4
16.
Dosing curves
5
17.
Disposal
5
5
Warning
5
These complete installation and operating
5
instructions are also available on
5
www.Grundfosalldos.com.
5
5
Prior to installation, read these installation and
5
operating instructions. Installation and operation
must comply with local regulations and accepted
5
codes of good practice.
5
1. General
6
1.1 Introduction
6
These installation and operating instructions contain all the
information required for starting up and handling the DMX 221
6
dosing pump.
6
7
If you require further information or if any problems arise, which
8
are not described in detail in this manual, please contact the
9
nearest Grundfos Alldos company.
10
1.2 Service documentation
10
10
If you have any questions, please contact the nearest Grundfos
10
Alldos company or service workshop.
11
11
12
13
13
13
13
13
14
14
14
15
15
15
16
16
16
17
17
17
17
17
17
18
18
18
18
18
19
19
19
19
19
19
19
20
20
20
20
20
21
22
23
27
3
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