January 2001
5C - 12
Functions - Dosing System
Service Manual Cafitesse 500
●
An infrared optical sensor (2, fig. 1) is
installed above every dosing coil, which
acts together with the black float for coffee
and tea (2, fig. 3) as an "empty indicator"
for the flexi-pack. For milk and cocoa
containing beverages the IR transparency
of the product serves as an "empty
indicator".
Flexi pack
filled
empty
Black float
in the area of the IR
underneath the
(only for coffee and tea)
optical sensor
IR optical sensor
for milk and cocoa
product in the area of
no product in the area
containing beverages
the IR optical sensor
of the IR optical sensor
Empty indication
off
on
●
During the beverage selection the left flexi-
pack doses concentrate into the trough box
(left water supply) (8) where hot water is
added. The product flows into the left
chamber of the combi-trough (7) and is
delivered via the left outlet spout.
(Fig. 1, pg. 5C-10)
●
During the beverage selection the right flexi-
pack doses concentrate into the trough box
(right water supply) (4) where hot water is
added. The product flows into the right
chamber of the combi-trough and is
delivered via the right outlet spout. For
some special models the motor for the
auto-diaphragm switches the auto-
diaphragm (6) over. Then the product of the
right flexi pack (1) is delivered into the left
chamber of the combi-trough. For Café au
lait it is mixed there with the product
delivery of the left flexi pack (11) and is
then delivered via the left outlet spout.
(Fig. 1, pg. 5C-10)
●
With the standard model type 410 the water
valve is opened 300 msec before
concentrate dosing is started. The water
closes 300 msec. before the coffee
concentrate dosing is completed. For the
function of special versions refer to the
corresponding chapter.
●
See also chap. 5.C.3.4.
