ABB SCC-S, Operator'S Manual, Page: 24 / 40

24
Replacing the Diaphragm and Valve Plates in the Diaphragm Pump
When do the Diaphragm and Valve Plates need to be Replaced?
The diaphragm and valve plates in the diaphragm pump must be replaced when
the diaphragm pump no longer feeds gas efficiently enough.
WARNING
Residues from the gas that the pump has been feeding may be found on the
diaphragm and valve plates. These materials can flow out when the
diaphragm pump is opened. Take appropriate measures where needed to
collect such residues. The medium being fed may be corrosive and poisonous!
Appropriate precautions must be taken! Wear protective goggles and
protective clothing!
Diaphragm Pump
1 Head cap 7 Valve plates
2 Head cap screws 8 Sealing rings
3 Spacer plate 9 Belleville spring
4 Structural diaphragm 10 Distance ring(s)
5 Casing 11 Supporting bell
6 Connecting rod