External Motor Pump Adjustment; Machine Tune-Up - Wega Mininova Use And Maintenance Manual For The Technician

3.10

External motor pump adjustment

(only version 1GR with external
motor pump)
To adjust operating pressure proceed as follows:
• Operate a coffee delivery switch;
• adjust the pressure by turning the screw located
on the pump (3) so as to obtain a value between
8 and 9 bar: tightening the screw increases the pres-
sure, and loosening it reduces the pressure. Check
the pressure on the pressure gauge (4) located in the
front side of the machine;
• turn off the delivery switch.
24
3.11
started, brought to the nominal working condition and
left for 30 minutes in the "ready to operate" condition.
emptied of the first water introduced in the whole
hydraulic circuit, to eliminate possible initial impurities.
brought to the nominal working conditions.
the following operations have to be performed:
1.
3
2.
4
3.

Machine tune-up

When installation is complete, the appliance has to be
Afterwards, the appliance has to be turned off and
Then, the appliance must be once again loaded and
After having reached the "ready to operate" condition,
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;
release the whole volume of hot water inside the
boiler (3 liters for 1GR, 5 liters for 2GR), 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.