M&C TechGroup MP12 Operator's manual - Manual (Page 14)

14
Gas sampling and gas conditioning technology 6-1.1.10-ME
14.1 CHANGING THE DIAPHRAGM, VALVES AND SEALINGS
Hexagon screws
Figure 3 Pump head with hexagon screws

Loosen the 4 hexagon screws;

Remove the 2 parts of the pump head.
Valve plates
Sealing rings
Diaphragm
Figure 4 Dismounted pump head

Unscrew the diaphragm by hand out of the tapping hole of the rod (counter-clockwise);

Screw the new diaphragm into the rod hand-tight;

Change the sealing rings and valve plates;

Put on the basic part of the pump head and control that the bulge of the diaphragm fits to the
groove of the pump head;

Put on the upper part of the pump head so that its pin fits into the hole in the basic part of the pump
head;

Fix the 4 hexagon screws constantly over cross;