Replacing The Group Gasket; Boiler Water Replacement; Use Of The Softener; Machine Demolition - La Pavoni CREMONA Mode D'emploi

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17 – REPLACING THE GROUP GASKET
If, during delivery, the coffee drips out of the edges of the filter-
holder (G), this may be caused by the obstruction of the filter-holder
delivery hole, in which case the hole needs to be cleaned; if the
problem persists or, if when fitting the filter-holder into the brewing
unit it significantly moves beyond the unit centre, the group gasket
needs replacing (D).
17.1 – CREMONA - CREMONA HC
A. Round metal block.
B. Sprayer.
C. Jet.
D. Gasket.
In order to replace it, unscrew the jet fastening screw (E), remove the
jet (C) and the sprayer (B), and then use a screwdriver as a lever to
remove the round metal block (A) and subsequently the gasket (D).
After having removed the gasket, thoroughly clean the seat before
placing the new gasket, after which reinstall the component by
following the above listed steps in reverse order.
18 – BOILER WATER REPLACEMENT
It is essential to replace the water contained in the boiler every
15-20 days, in order to eliminate the iron bacteria and the build-up
of various residues due to water stagnation.
Turn off the main switch (1), remove the drain basin grid (25) and
pull out the lower drain basin (24).
Open the drain tap placed under the level glass (with the boiler
under pressure) and let the water flow out of the boiler comple-
tely. Close the tap again and repeat the start-up procedures by
following the steps outlined in the related section of this manual.
19 – USE OF THE SOFTENER
Calcium and magnesium contained in the water circulating insi-
de the boiler and brewing unit circuits damage the machine.
The softener dissolves the calcium and magnesium, which settle on the
resins therein contained.
To prevent the build-up of deposits from saturating the resins, thus limi-
ting their functions, these need to be regenerated at regular intervals
according to the following criteria:
- 8 litre softener for 40 French degree HARDness water
• up to 400 cups of coffee/day, every 10 days
• up to 800 cups of coffee/day, every 5 days
• up to 1000 cups of coffee/day, every 3 days
- 12 litre softener, for 40 French degree HARDness water
• up to 500 cups of coffee/day, every 15 days
• up to 1000 cups of coffee/day, every 7 days
A
B
C
D
E
F
G
E. Jet fixing screw.
F. Filter.
G. Filter-holder.
• up to 1500 cups of coffee/day, every 5 days
• up to 2000 cups of coffee/day, every 3 days.
Failure to comply with the above regeneration timings will prejudice the
thermal and mechanical functions of the machine and the taste of the
coffee, owing to the formation of scale.
For regeneration, proceed as follows:
Place an empty container, having a capacity of at least two litres, under
pipe (e), turn the (c) and (d) handles to the right, unscrew the (g) lid
and wait for the water to fully flow out of pipe (e), Introduce 1.5 Kg. of
cooking salt for the 8 litre model or 2 Kg. of salt for the 12 litre model,
place the lid back in place and move the (c) handle from right to left;
let the salted water flow out of the (f) pipe and wait until the water has
become fresh again (the cycle takes approximately 90 minutes).
g
c
e
a
d
f
b
a - Water inlet.
b - Water outlet.
c - Inlet tap.
d - Outlet tap.
e - Vacuum pipe.
f - Regeneration pipe.
g - Lid knob.
Now move the (d) handle from right to left.
During regeneration, do not use the machine; for machines equipped
with automatic level indicator it is advisable to cut off the pump power
supply, to prevent no-load operation.
Before connecting the softener to the machine, wash the resins, by
establishing a connection to the water mains and letting water run for
five minutes.
N.B. The above mentioned directions relate to the softener shown in
the pictures; if your equipment differs, follows the directions attached to
softener in question.
20 – MACHINE DEMOLITION
Should you decide to no longer employ the machine, owing to wear
or to other reasons, we recommend that, once you have removed the
plug from the socket, you deactivate it by cutting off the supply cable.
As regards the demolition procedure, we recommend you separate
the various parts of the machine, depending on their nature (pla-stic,
metal, etc.). Hence employ specialised firms for the disposal of the
various parts.
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