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Vibiemme Vibiemme Double Domobar version 3 Manual

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aluminum so they are less likely to damage the group, and the flat cross section keeps them in place as you
work. Hook the tool in the groove in the screen (indicated by the yellow arrow), and push the tool towards the
screen and at the same time apply a prying action and remove the screen and gasket as a unit. Another tool
that can be used is a paint can opener. Use a rag between the tool and the group at the fulcrum point where
the tool will be sitting on the chrome. Be aware that the shower screen can be damaged when doing this so it
is best to have a spare one on hand, just in case.
Depending on just how hard the existing gasket has become, the above method may not work. The easi-
est way then is to use one or two drywall screws. Try using a single one at first and screw it directly into the
black, rubber gasket, then grasp it with a pair of pliers and pull it out (be careful not to bark your knuckles if
the screw suddenly pulls out). If the screw just pulls out of the rubber, use a larger-diameter wood screw, file
off the pointed tip so it if flat, and screw it into the gasket in the same hole made by the drywall screw until it
touches the brewhead, and then continue turning the screw. As it penetrates the gasket and hits the brewhead
it will pull the gasket away from the group. If this isn’t working, try repeating the process in a different loca-
tion, near where you first tried.
If you do this and the gasket breaks that is fine. You can then just pry it out with a small screwdriver or ice
pick. Use care not to mar the brewhead. It is a very good idea to have
a spare shower screen on hand before attempting this job. The screen is
held in place by the gasket, and if you have to go at the gasket with
vigor the shower screen can be damaged. Having a spare on hand will
limit downtime.
Once the gasket is out, remove the shower screen and give the
area a good cleaning. Be sure that no old gasket or coffee residue is
left in the brewhead. If need be, use a brass-bristle brush to clean the
area.
To install the new gasket, assemble the gasket over the shower
screen and place them on a portafilter, Maneuver the assembly into
place and then simply lock the portafilter into place as you would
when making espresso. The cam-action of the portafilter locking
into place will push the shower screen and gasket into place.
How often this needs to be done depends on many factors, but
for in home use about once every one or two years is usually more
than often enough. Otherwise, change it when you feel it lacking in resiliency when locking the portafilter in
place or when leaks occur that are not resolved by other solutions as mentioned above. Changing the gasket
sooner rather than later will eliminate the hassle of dealing with hardened gaskets stuck in the group.
Shower Screen & Brew Head Cleaning
Removing the shower screen and group gasket gives you access to the dispersion disk and group head.
WARNING: Always wait for the machine to fully cool before attempting to remove the shower
screen. The group can be very hot which present a serious burn hazard.
The dispersion disk can be unscrewed from the group using a suitable driver. Be sure that it fits the slot. A
large coin of the appropriate size can be used, gripped by a suitable
wrench or pliers.
The removed parts (including the dispersion disc seen here) can
be soaked in espresso machine cleaner, and the group scrubbed with
the included group brush using the same cleaner.
CAUTION: Follow manufacturer’s recommendations when
using the cleaner. Wear eye and hand protection when doing
cleaning chores.
When replacing the gasket, the side that
has printing or has a beveled edge goes
UP towards the group. Some replace-
ment gaskets come without the VBM
name. They use 8.5 mm thick gaskets.
… 61 …


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