Table Of Contents; General; Introduction; Service Documentation - Grundfos DMH 251 Installation And Operating Instructions Manual
Dosing pump
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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
7.
7.1
7.2
7.3
7.4
8.
8.1
8.2
8.3
8.4
8.5
8.6
9.
9.1
9.2
9.3
9.4
9.5
9.6
9.7
9.8
10.
10.1
10.2
10.3
10.4
10.5
11.
11.1
11.2
Start-up / subsequent start-up of
DMH 251, 252 and 253
11.3
Start-up / subsequent start-up of
DMH 254, 255 and 257
11.4
11.5
11.6
11.7
12.
Operation
12.1
Switching on/off
Page
12.2
Setting the dosing capacity
3
12.3
Using the AR control unit (optional)
3
12.4
Electric servomotor (optional)
3
12.5
Electronic preselection counter (optional)
12.6
Electrically heated dosing head (optional)
4
4
13.
Maintenance
13.1
General notes
5
13.2
Diaphragm leakage control for diaphragm leakage
5
detection
5
13.3
Cleaning and maintenance intervals
5
13.4
Checking the oil level
5
13.5
Cleaning the suction and discharge valves
5
13.6
Replacing the diaphragm and gear oil for dosing head
5
with single diaphragm
5
(no diaphragm leakage detection)
5
13.7
Replacing the diaphragm for dosing head with
double diaphragm
5
14.
Fault finding chart
6
15.
Dosing curves
6
16.
Disposal
6
Warning
6
These complete installation and operating
6
instructions are also available on
7
www.Grundfosalldos.com.
8
8
Prior to installation, read these installation and
11
operating instructions. Installation and operation
11
must comply with local regulations and accepted
11
codes of good practice.
11
11
1. General
11
1.1 Introduction
12
These installation and operating instructions contain all the
12
information required for starting up and handling the DMH 25x
12
piston diaphragm dosing pump.
12
12
If you require further information or if any problems arise, which
are not described in detail in this manual, please contact the
13
nearest Grundfos Alldos company.
13
17
1.2 Service documentation
19
19
If you have any questions, please contact the nearest Grundfos
19
Alldos company or service workshop.
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20
21
21
22
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23
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24
24
24
24
25
25
26
27
27
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