Pre-Brewing - La Marzocco GB/5 Manual

"Technical" Programming
Pre-Brewing (Pre-Infusion)
Programming Mode
Pr e- Br ewi ng
DI SABLED
Display
Press and hold the
1
L a Ma r z o c c o 0 9: 3 0
seconds)
2
Enter the 5 digit technician password using buttons 1-5 on the group 1 keypad. Once accepted the following
Pas s wo r d
?????
appears:
Press the
La ng uag e 3
ENGLI SH
Press the
4
Pr e - Br e wi n g
DI SABL ED
displayed press the
5 If ENABL ED is chosen, the display then shows the values for T(tot) and T(on) for each button.
Key 1 Gr o u p 1
Tt ot : 20 To n: 10
Press
6 Repeat procedure 5 for each button (key) that you wish to activate pre-brewing. A setting of T(tot) = 0 and T(on)
= 0 disables pre-brewing on the individual button.
7 When inished, continue to the next parameter
NOTE: The unit of measure for these values is 1/10 sec. Therefore a value of 10 equals 1 second.
39
Description
• This parameter allows the technician to
enable or disable the pre-brewing (also
called pre-infusion) function.
Operating Procedure
button on the group 1 keypad until the following is displayed (approximately 10
button on the group 1 keypad until the following appears:
or the button to change to ENABL ED or DI SABL ED. Once the desired condition is
button to conirm.
or the to adjust a value and press
• Pre-brewing has two values to adjust.
T(tot) is the total time for pre-brewing.
T(on) is athe amount of time that the
brew valve is open during T(tot). The off
time is calculated by subtracting T(on)
from T(tot).
to advance to the next value.
or press to exit programming mode.