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REPLACING THE DIAPHRAGMS
Replacement diaphragms should be stored in dry, cool, dust-free and dark places, and not longer
than 8 months to avoid material ageing.
REPLACEMENT OF CONTROLS
Remove front valve housing with connection pieces.
Remove casing.
Unscrew cheese head screws
Remove plate
Lift out close sliding seat
Remove flat slide
Remove safety rings
Screw cheese head screw
Remove safety ring
Push out the drive pin
Fig. 15
.
with seal
.
using two screwdrivers.
.
.
into its stop
and press the bush
.
Remove both housing covers by first removing
the appropriate cheese head screws (valve
housing, connection parts and casing do not
need to be removed).
Loosen the diaphragms by hand one after
the other and unscrew.
If one of the pins
movement feed an open-ended spanner SW13
under the diaphragm and hold it against the
rotation. Before this, push the linkage for the
diaphragm to be removed across.
Check the pin connections for tight fit using
two spanners.
Tighten the new diaphragm lightly only by
hand.
Do not use any tools such as pliers to do this.
, then pull it out.
out from inside.
18
or
rotates during this
B.6.50.80-B-GB
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