23
© by NECTA VENDING SOLUTIONS SpA
09-2003 228 00
BREWER UNIT MAINTENANCE
Every 10,000 selections or every 6 months some main-
tenance of the brewer unit must be carried out.
Maintenance is carried out as follows:
- remove the boiler teflon hose connection from the upper
piston, paying attention not to lose the seal (see Fig. 15);
REGENERATING THE SOFTENER UNIT
(O
PTIONAL
)
Only a 2-litre ion-exchange resin softener unit can be used
on these machines.
The resins should be regenerated at least once a week or
even more frequently depending on the hardness of the
water from the mains used to supply the machine (see
table below).
s
s
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n
d
r
a
h
r
e
t
a
W
s
n
o
i
t
c
e
l
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f
o
.
N
H
f
°
H
d
°
.
c
c
0
6
.
c
c
0
3
1
0
1
6
.
5
0
0
6
5
0
0
8
2
0
2
2
.
1
1
0
0
8
2
0
0
4
1
0
3
8
.
6
1
0
0
9
1
0
0
9
0
4
4
.
2
2
0
0
4
1
0
0
7
0
5
0
.
8
2
0
0
1
1
0
5
5
Fig.. 16
1 - From the tap
2 - Cap
3 - To the machine
4 - Softener unit
5 - To the drain
- undo the knob securing the unit to the bracket;
- remove the brewer unit.
Removing the upper filter
- Take the snap ring out of its seat;
- remove the piston from the crosspiece;
- remove the filter and the piston seal.
Removing the lower filter
- Loosen screws A and B enough to release the coffee
funnel (see Fig. 15);
- remove the lower piston snap ring;
- take the piston out of brew chamber and remove the filter.
Soak all components removed from the unit in a solution
of boiling hot water and coffee machine detergent for
approx. 20 minutes.
Thoroughly rinse and dry all parts, then reinstall them in
the reverse order of disassembly, taking particular care
that:
- the piston is positioned in the correct notch for the coffee
dose used (see relevant section);
- the two reference notches match and that the coffee unit
is inserted.
Important notice!!!
Check that the handle pin of the ratiomotor is correctly
engaged in its seat.
Fig. 15
1 - Coffee funnel
2 - Boiler connecting hose
3 - Unit securing knob
4 - Upper piston snap ring
5 - Lower piston snap ring
6 - Reference notches
7 - Ratiomotor handle pin
To regenerate the resins correctly do as follows:
- remove the softener unit from the cabinet and shake it
vigorously to eliminate any preferential paths which may
have formed;
- fill 0.5 Kg. of sodium chloride (ordinary table salt);
- connect the side hose union to a tap and the middle
rubber-holder to a drain point; the direction of the water
flow must be
NECESSARILY
the one shown in figure 16
Summary of Contents for Necta Colibri Espresso
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