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6.2 Pressure switch adjustment
The pressure switch shown in the figure acts to keep the
boiler pressure constant by engaging or de-activating the
electrical heating resistance.
This pressure switch is already calibrated to 1.1-1.3 bar
during the initial machine testing stage, but should a different
working pressure be required, it is possible to vary the
operational field of the pressure switch using the regulation
screw (U); pressure reduction results in a reduction in tempe-
rature, whilst increasing the pressure will also increase the
water temperature. The regulation direction is shown in the
figure and on the pressure switch itself. The pressure varies
by 0.1 atm for every complete screw turn.
Warning: Disconnect the electricity supply before
undertaking this operation.
fig. 5
6.3
Pump pressure calibration
Insert the filter holder into the unit filled with regularly ground,
dosed and pressed coffee.
Switch on the unit switch (SM) or the unit control keyboard (SE)
(15) and read the pressure on the pump pressure gauge (6).
NB: The correct pressure is of 8-9 atm.
Should the pressure indicated on the pressure gauge be
incorrect, turn it clockwise to increase the pump pressure
and anti-clockwise to reduce the pressure.
Once adjustment is complete check pump calibration by
delivering one or more coffees.
Z= Pump pressure adjustment screw.
fig. 6
Warning !!
When the machine is new the filter-holder sump may
not be aligned (perpendicular to the machine itself)
as shown in the figure at the side, however this does
not effect the efficient function of the same.
After a short period of use the sump will gradually
settle into a correct position.
A = Position of closed filter-holder with new machine.
B = Position of closed filter holder with machine after a short
period of use.
fig. 7
IMPORTANT: N°2 under-tile packings with are thinner (8.1mm
) than that fitted as standard are included. These packings may
be used in the event of difficulty with insertion of the filter holder.
6.4 .ilters for coffee machine
Depending on the quantity of coffee ground, the appropriate
filter must be used as shown below to avoid that, once the
coffee has dripped out, the leftover powder remains attached
to the nozzle.
fig. 8
English
WGAN.08/002/B
1 Coffee cup of 5,5 gr. ÷ 6,5 gr.
Pod for 1 coffee
Barley pod for 1 dose
WGAN.08/004/B
1 Coffee cup of 6 gr. ÷ 7 gr.
WGAN.08/005/B
2 Coffees cup of 12 gr. ÷ 14 gr.
WGAN.08/009/B
Double pod for 2 coffees
The filter may be recognised by the
letter “C” printed inside.
.
11
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