Grundfos DMX Series

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
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