How To Check For Oil Leakage In Piston Assembly; Brew Unit - Saeco GranBaristo Avanti Service Manual

GRAN BARISTO
2.4.
In case of return because the machine indicates no coffee one of the causes could be the loss of oil from the piston assembly.
To check this, proceed as follows:
2 3
4 1

Brew Unit

This page allows to test the functionality of Brew Unit, BU Encoder, frontal door and dreg drawer:
BREW
Work
0
DDr
In case of oil leakage, remove the piston assembly clean any oil residue with a dry cloth and replace the piston assembly with a
new one.
NOTE: Oil is of vegetal origin, certifi ed for food contact, H3 (maximum in terms of food safety for oils).
Downloaded from www.Manualslib.com

How to Check for oil leakage in piston assembly.

Press UP (
UNIT
Home mA: 0
Ev Oil Rst 4000
H/W Door Pres
KO
OK
manuals search engine
02 TECHNICAL SPECIFICATIONS
To enter Test Mode
When the display is turning ON, press the key-
board buttons in the order described below:
): go to next page
The meaning of the sectors are the following:
Command:
Work: when pressed moves the brew unit to WORK
Home: when pressed moves the brew unit to HOME
Ev Oil: when pressed activates/deactivates the Oil
electrovalve (24V Dc)
Rst: when pressed moves the brew unit in
RESET(extraction) position(stop the brew unit if was in
movement)
EV deactivate
The piston moves upward of approx. 5mm
>
ERROR: excursion 5mm approx. is
The piston moves up in case of lack of oil
EV activate
The piston moves upward until it stops.
WARNING: Deactivate the EV only when
it goes back into its original position. Failing
to do so could result in air being sucked into
the circuit.
(OK)
(KO)
OK
Page 06 / 06