Operation; Description Of The Pump - Grundfos DMX 226 Installation And Operating Instructions Manual

9. Operation

In the event of a diaphragm leakage, the dosing liquid may leak out of the hole in the intermediate flange between the pump and the
dosing head. The parts inside the housing are protected from the dosing liquid for a short time (depending on the type of liquid) by
Caution
the housing sealing. It is necessary to check regularly (daily) if liquid is leaking out of the intermediate flange. For maximum safety,
we recommend the pump version with diaphragm leakage detection.

9.1 Description of the pump

7
4 3
5
6
DMX 226
Pos. Components
1 Motor
2 Gears
3 Eccentric
4 Dosing diaphragm
5 Dosing head
6 Suction valve
7 Discharge valve
8 Stroke-length adjustment knob
9 AR control unit (optional)
10 Stroke sensor
Functional principle
• Reciprocating positive displacement pump with electric motor and mechanical diaphragm control.
• The rotation of the motor is transformed into the reciprocating movement of the dosing diaphragm by the eccentric and the tappet.
• The dosing flow can be set by adjusting the stroke length of the tappet.
9
2
DosingPump.ir
10
1
8
23