Bianchi Industry BVM 351, Use And Maintenance Manual, Page: 19 / 34

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Fig. 8 .2
COFFEE GROUN D S D ECOUN TER M AN AGEM EN T
I nput s and out put s involved:
I n pu t s Ou t pu t s
Coffee grounds door: I NPUT1: 11
Each dispensing cycle group rot at ion, decreases t he count er t hat is
displayed in t he prevent ive act ion m enu ( 7) . When t he decount er
is dow n t o zero, t he dispensing cycle underway is brought t o an
end, t hen t he syst em t riggers off t he det ect ion report and t he
follow ing m essages w ill com e up on display:
Em pt y
Coffee grounds
w hilst t he st andard m achine funct ions are inhibit ed by t he m a-
chine.
I f t he coffee grounds door m icro st ays open cont inuously for 5
sec, t he decount er is charged back up again.
Once t he decount er is charged up and aft er t he door m icro has
been closed back up again, check once again t o ensure t hat t he
decount er has been charged back up again.
When t he coffee grounds t ray is closed it can be assert ed t hat t he
coffee grounds door is at a low logic level.
M OTORI SED GRI N D ER- D OSER UN I T M AN AGEM EN T
I nput s and out put s involved:
I n pu t s Ou t pu t s
Clockw ise rot at ion: OUT3: 7
Ant iclockw ise rot at ion: OUT3: 8
This m anagem ent m ode is devised for t he follow ing drinks:
● Short (condensed) coffee dose (Key 1)
Set t ing of t he coffee dispensing t im e, w it h a ± 3 seconds t olerance
t im e. The m ot or act ivat ion t im e for grinder- doser unit adj ust m ent
must be 0.4 seconds for finer grinding and 0.9 seconds for coarser
grinding.
The first two coffee servings straight after the vending machine
has been sw it ched on or aft er grinder- doser unit adj ust m ent ope-
rat ions, m ust never be t aken int o considerat ion.
The grinder- doser unit adj ust m ent operat ions should be done at
t he end of t he coffee dispensing cycle, w hilst t he group goes back
int o it s rest posit ion.
Exam ple w it h dispensing t im e set at 18 seconds
Sw it ch on t he vending m achine: set dispensing t im e is 18”. The
first two coffee servings dispensed by the machine and the two
coffee servings dispensed st raight aft er t he adj ust m ent operat ions
cannot be t aken int o considerat ion.
I f in t he 3 subsequent select ions t he coffee dispensing t im e does
not reach 18” ( ± 3” if t he coffee is less t han 60 cc and ± 4” if t he
coffee is com prised bet w een 60 and 80 cc) , t he m ot or reducer w ill
be act ivat ed back up again for 0.4 sec in a clockw ise direct ion.
I f in t he 3 subsequent select ions t he coffee dispensing t im e goes
over 18” ( ± 3” if t he coffee is less t han 60 cc and ± 4” if t he coffee
is com prised bet w een 60 and 80 cc) , t he m ot or reducer w ill be
act ivat ed for 0.9 sec in an ant iclockw ise direct ion.
The above process shall have t o be repeat ed unt il t he set t im e
is reached.
When t he coffee dispensing t im e am ount s t o 18” ( or at least lies
w it hin t he t olerance) , t he m ot or reducer w ill no longer need t o
be act ivat ed.
The program will consist ent ly read- off t he dispensing cycle durat ion
based on t he coffee elect ro valve opening ( OUT3: 2) and, in t he
event t hat t he last 3 select ions are found t o be less t han or m ore
t han t he set dispensing t im e plus a ± 3” t olerance if t he coffee is
less t han 60 cc and ± 4” t olerance if t he coffee is com prised bet ween
60 and 80 cc, (with finer grinding) to increase the dispensing time
and for 0.9 sec in an ant iclockwise direct ion ( wit h coarser grinding)
so as t o decrease t he dispensing t im e.
The program m able, coffee dispensing t im e range w ill be [ 2.9 t o
35.0 s] and can be set via t he opt ions m enu.
Se le ct ion n o. D ispe n sin gt im e Re su lt
1
2 11”
13” Dispensed st raight aft er
vending m achine swit ch-
on.
Not considered.
3
4 12”
13” Dispensed at less t han
t he set t im e
The motor reducer is activated clockwise for 0.4 sec(with finer
grinding)
5
6 13”
14” Dispensed aft er adj ust -
m ent . Not considered.
7 15” Only one is out of t im e
lim it s. Not considered.
8 16.5” OK
9 16” OK
10 16.5” OK
11 17” OK
12 21” Only one is out of t im e
lim it s. Not considered.
13 18” OK
14 19” OK
15 20” OK
16
17 21”
22” Tw o consecut iv e selec-
t ions out of t im e lim it s.
The m ot or reducer is act ivat ed ant iclockw ise for 0.9 sec( w it h
coarser grinding)
18
19 22”
21” Dispensed aft er adj ust -
m ent . Not considered.
20 19” OK
21 19” OK
22 18.5” OK
23 19” OK