Cleaning and maintenance
64
20901334_EN-US_PC3000 VARIO select Serie_V1.4_061022
5. Unscrew the hexagon
socket screws from the head
covers. Hexagon socket
wrench size 5.
6. Set the screw fasteners
aside and take off the pump
head pair.
Replacing membranes
-> Example
Membrane replace-
ment
1. Gently press against one of
the membrane spring wash-
ers.
2. Fold the membrane forward
on the sides.
3. Carefully position the mem-
brane wrench onto the
membrane support disc and
unscrew the assembly with
the membrane wrench fixed
in place.
4. Lift the membrane with all
its parts out of the vacuum
pump.
If spacers are stuck to the
connecting rod, carefully re-
move these.
