Adjustments To Be Made By Aqualified Technician Only; Pressure Switch Adjustment; Pump Adjustment - Nuova Simonelli APPIA V Manuel D'instructions

5.
ADJUSTMENTS TO BE MADE BY A QUALIFIED TECHNICIAN ONLY
5.1
PRESSURE SWITCH
ADJUSTMENT
CAUTION
The adjustments listed here below must
ONLY be performed by a Specialist Technical
Engineer.
Nuova Simonelli cannot be held liable for
any damage to persons or property arising
from failure to observe the safety instruc-
tions supplied in this manual.
CAUTION
ELECTRIC SHOCK HAZARD
Before performing any operation, the spe-
cialist technical engineer must first switch
off the main switch off and unplug the
machine.
To adjust the service pressure of the boiler,
thus regulating the water temperature, accord-
ing to the various functions and needs of the
coffee desired, proceed as follows:
Remove the cup support grill from the
upper part of the machine by removing the
central screw "A".
A
32
Turn the pressure switch adjustment screw
to INCREASE (clockwise) or REDUCE
(anticlockwise) pressure.
Advisable pressure: 1 - 1,4 bar
(according to the kind of coffee).
5.2

PUMP ADJUSTMENT

To change the working pressure of the pump
and therefore, the coffee extraction pressure,
proceed as follows:
Remove the worktop grid cover;
Take off the sheet metal guard by unscrew-
ing the two side screws (B) as illustrated in
the following figure.
B
Fig. 13
Turn the pump registration screw, turning it
clockwise to INCREASE and counter clock
wise to DECREASE the pressure.
Fig. 14
Advisable pressure: 9 bar.
The set pump pressure is shown on the
lower part of the gauge.
Once the adjustments have been completed,
refit the sheet metal guard into its seating and
fix it into place with the two side screws; refit
the work surface grille
Fig. 15
Fig. 16
Fig. 17