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B_04213
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B_04217
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OPERATING MANUAL
VERSION 01/2013 ORDER NUMBER DOC 2335747
9.3 DIAPHRAGM REPLACEMENT DUE TO BREAKAGE
If the diaphragms are replaced as a result of breakage, all the internal parts of the motor
must be cleaned and the condition of the seals and reversing valve, which may have been
damaged by contact with the pump uid, must be checked.
Mark the coupled parts (diaphragm covers, manifold, covers) with a felt-tip pen so as to
make subsequent reassembly easier.
a) Remove the suction and delivery manifolds.
b) Unscrew the mounting screws from the two diaphragm covers and remove the
diaphragm covers.
c) Remove the reversing valve (1).
d) With the help of two wrenches located opposite each other (or hexagonal socket
spanner and bench vice), loosen one of the central nuts and remove the rst
diaphragm (2). The diaphragm is composed of two layers: the material side and the
air side.
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