Table Of Contents; General Information; Introduction; Applications - Grundfos DMX 226 Installation And Operating Instructions Manual

English (GB) Installation and operating instructions
Original installation and operating instructions
CONTENTS
1. General information
1.1 Introduction
1.2 Applications
2. Safety
2.1 Identification of safety instructions in this manual
2.2 Qualification and training of personnel
2.3 Risks when safety instructions are not observed
2.4 Safety-conscious working
2.5 Safety instructions for the operator/user
2.6 Safety instructions for maintenance, inspection and
installation work
2.7 Unauthorised modification and manufacture of spare
parts
2.8 Improper operating methods
2.9 Safety of the system in the event of a failure in the
dosing system
3. Technical data
3.1 Identification
3.2 Type key
3.3 Pump types
3.4 Pump performance
3.5 Suction heights
3.6 Ambient and operating conditions
3.7 Dosing medium
3.8 Electrical data
3.9 AR control unit
3.10 Materials
3.11 Weights
3.12 Dimensional sketches
4. Transport and storage
4.1 Delivery
4.2 Intermediate storage
4.3 Unpacking
4.4 Return
5. Installation
5.1 Optimum installation
5.2 Installation tips
5.3 Mounting
5.4 Hose / pipe lines
5.5 Connecting the suction and discharge lines
6. Electrical connections
6.1 Versions with mains plug
6.2 Versions without mains plug
7. Commissioning
7.1 Checks before start-up
7.2 Start-up
8. Operation
8.1 Description of the pump
8.2 Switching on/off
8.3 Adjusting the dosing flow via the stroke length
8.4 Stroke-length adjustment
8.5 Adjustment of stroke rate using a frequency converter 21
8.6 Using the AR control unit
9. Operation with other electronics
9.1 Electronic version stroke sensor
9.2 Electronic diaphragm leakage sensor
10. Integral relief valve
10.1 Function
10.2 Permissible media
10.3 Connections
10.4 Setting of opening pressure
10.5 Venting
10.6 Fault finding chart
11. Maintenance
11.1 General notes
11.2 Cleaning and maintenance intervals
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11.3 Cleaning the suction and discharge valves
11.4 Maintenance of the relief valve
11.5 Replacing the diaphragm
12. Fault finding chart
Page
13. Dosing curves
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14. Disposal
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Warning
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These complete installation and operating
3
instructions are also available on www.grundfos.com.
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Prior to installation, read these installation and
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operating instructions. Installation and operation
3
must comply with local regulations and accepted
codes of good practice.
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1. General information

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1.1 Introduction

These installation and operating instructions contain all the
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information required for starting up and handling the DMX 226
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dosing pump.
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If you require further information or if any problems arise, which
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are not described in detail in this manual, please contact
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Grundfos.
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1.2 Applications

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The DMX 226 pump is suitable for liquid, non-abrasive and
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non-flammable media strictly in accordance with the instructions
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in this manual.
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Warning
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Other applications or the operation of pumps in
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ambient and operating conditions, which are not
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approved, are considered improper and are not
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permitted. Grundfos accepts no liability for any
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damage resulting from incorrect use.
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If a pump is explosion-proof, it is marked on the
16 pump and motor nameplates.
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The declaration of conformity supplied with
Note
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explosion-proof pumps approved according to the
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2014/34/EU directive replaces the declaration of
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conformity in this manual.
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Warning
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When using explosion-proof pumps in potentially
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explosive areas according to the 2014/34/EU
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directive, the instructions "ATEX-approved pumps"
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as well as the instructions in this manual must be
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observed.
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