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Documents are only to be used and distributed completely and unchanged. It is strictly the users´ responsibility to check
carefully the validity of this document with respect to his product. manual-no.: 999100 / 06/05/2008
Use hex key to remove six socket head screws from pump
head and remove upper housing (housing cover, housing cover
insert and head cover).
☞
Never remove parts by using a spiky or sharp-edged tool (e.
g. screw driver), we recommend to use a rubber mallet or
compressed air (to be blown carefully into port).
Remove head cover from housing cover and check valves. Note
position of valves and remove.
☞
Replace valves if necessary.
Use petroleum ether or industrial solvent to remove deposits.
Do not inhale.
Check diaphragm for damage and replace if necessary.
Lift diaphragm carefully.
☞
Apply pressure to the clamping disc beside the diaphragm
to bring connecting rod into upper turning point position if
necessary.
☞
Never use a spiky or sharp-edged tool to lift the diaphragm.
Use diaphragm key to grip under the diaphragm to the diaphragm
support disc.
Apply pressure to the diaphragm clamping disc to bring the dia-
phragm into lower turning point position. Press diaphragm key
against diaphragm clamping disc and remove diaphragm sup-
port disc with diaphragm.
☞
If the old diaphragm is difficult to separate from the support
disc, immerse assembly in naphtha or petroleum ether. Do
not inhale!
☞
Check for washers under clamping disc. Do not mix the wash-
ers from the different heads. Make sure that the original
number is reassembled at the individual pump head.
Replacing the diaphragm:
Use Phillips screw driver to unscrew the handle at one side of
the housing cover.
It is not necessary to disassemble the exhaust waste vapour
condenser.
Use open-ended wrench to remove union nut at hose connec-
tion next to the gas ballast.
Use open ended wrench (w/f 15) to turn elbow fitting 1/4 of a
turn, reconnect hose. Do not remove the elbow fitting from the
pump head.
☞
Through reassembly a leak may result.
