Wega Wegaconcept, Use And Maintenance Manual

Page: 15 / 76

15
Wegaconcept
Technical manual
ENGLISH
3.5 External motor pump adjustment
To adjust operating pressure proceed as follows:
t Operate a coffee delivery switch;
t adjust the pressure by turning the screw located on
the pump (
1 ) so as to obtain a value between 8 and
9 bar: tightening the
screw increases the
pressure, and loosen-
ing it reduces the pres-
sure. check the pres-
sure on the display (
2 );
t
turn off the delivery
switch.
3.6 Machine tune-up
When installation is complete, the appliance has to be
started, brought to the nominal working condition and
left for 30 minutes in the "ready to operate" condition.
Afterwards, the appliance has to be turned off and
emptied of the first water introduced in the whole
hydraulic circuit, to eliminate possible initial impurities.
Then, the appliance must be once again loaded and
brought to the nominal working conditions.
After having reached the "ready to operate" condition,
the following operations have to be performed:
a) for each coffee unit, carry out a continuous
delivery, in order to release at least 0.5 liters of the
coffee circuit. In the case of several dispensing points
matched with the same exchanger/coffee boiler, divide
the volume on the base of the number of the dispensing
points;
b) release the whole volume of hot water inside the
boiler (6 liters for 2GR, 8 liters for 3GR, 11 liters for 4GR), by
performing a continuous delivery from the appropriate
nozzle. In the case of several dispensing points, divide
the volume on the base of the number of the dispensing
points;continuously release steam for at least 1 minute
for each steam dispensing point.
1
When the machine
is turned on, it will
ac tivate the motor
pump installed and
begin to fill the services
boiler and the water
heaters for the coffee (equal to the number of delivery
groups installed on the machine).
0,0 Bar Press 3,5
08:30 14-APR-2010
COFFEE
WATER FILLING
In order to remove
t h e a i r f r o m t h e
heaters, each time the
machine is turned on
the solenoid valves
of the groups will be
activated, making water and steam come out from the
perforated disk of each group for about 10 seconds.
When the heating
phase of the delivery
groups has finished
( a f t e r a b o u t 1 0
minutes), signaled by
the disappearance of
the “
PLEASE WAIT ” indication, it will be possible to
make the coffee selections. For the delivery of hot water
and steam, it will be necessary to wait for the complete
heating of the services boiler.
During the heating
phase of the services
boiler (from 95°C to
98°C), the machine will
execute a light delivery
of water and steam
from the hot water nozzle.
T h e d e l i v e r y
o f s t e a m a n d h o t
water, and thus the
full operation of the
m a c h i n e , w i l l b e
p o s s i b l e o n l y a t a
pressure higher than 0.6 bar.
0,0 Bar Press 3,5
PLEASE WAIT
Humidity' 38% P 85%
0.7 Bar Press 3.5
08:30 14-APR-2010
Humidity' 38% P 85%
0,0 Bar Press 3,5
STEAM ESCAPE
humidity' 38% P 85%
0,0 Bar Press 3,5
08:30 14-APR-2010
MAKE ATTENTION
WATER/STEAM ESCAPE
0,0 Bar Press 3,5
8:30 14-APR-2010
2
!
To avoid the risk of burns, it is advisable to keep
hands away from the hot water nozzle, steam
nozzle and delivery groups during the machine's
heating phase.