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SCC-F Sample gas feed unit Operator’s manual
42/23-51 EN Rev. 3
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.
CAUTION!
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 pre-
cautions must be taken.
Figure 10
Diaphragm pump
1
Head
cap
2
Head cap screws
3
Spacer plate
4
Structural
diaphragm
5
Casing
6
Connecting
rod
7
Valve
plates
8
Sealing
rings
9
Counter
weight
10
Eccentric
11
Belleville spring
12
Distance ring(s)
Continued on next page
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