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9V3.0

DMX model 227

6.2 Principle of function ................................................................................. 23

6.3 Switching on / off ..................................................................................... 23

6.3.1 Switching on ................................................................................ 23

6.3.2 Switching off ................................................................................. 23

6.4 Adjustment of dosing rate using frequency converter ............................ 23

6.5 Possible Failures ..................................................................................... 24

7 Electronics Diaphragm Breakage Sensor ............................................25

7.1 Technical Data of the Electronics ............................................................ 25

7.2 Dimensional Drawing (Electronics Enclosure) ....................................... 25

7.2 Function................................................................................................... 25

7.2.1 Pumps prepared for a diaphragm breakage indication .............. 25

7.2.2 Using the Contacts ...................................................................... 26

7.2.3 Description of the Device............................................................. 26

7.3 Electrical Connections of the Electronics ............................................... 26

7.3.1 Relay Outputs .............................................................................. 27

7.4 Screwing the Sensor into the Dosing Head ........................................... 28

7.5 Commissioning ....................................................................................... 28

7.6 Maintenance ........................................................................................... 29

8 Maintenance ..........................................................................................30

8.1 Rates for cleaning and maintenance...................................................... 30

8.2 Gear oil change....................................................................................... 30

8.3 Cleaning the Suction and Pressure Valves ............................................ 31

8.4 Exchanging the Diaphragm .................................................................... 32

A. Appendix: Dosing Curves for DMX model 227 .....................................33

Grundfos DMX Series User Manual

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