Steam Boiler Pressure Regulation - La Marzocco GB/5 Manual

Steam Boiler Pressure
Regulation
St eam heat . Ty pe
Temp. Pr obe
Display
1 Press and hold the
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:
La ng uag e
3 Press the
ENGLI SH
St ea m h eat . Ty pe Press the
4
Temp. Pr o be
to conirm selection. Normally this value should not be changed
5 When inished, continue to the next parameter
NOTE: When this parameter is set to "Temp. Probe" an additional parameter named "Steam Temp. Cor. is
activated. When changing from Temp Probe to Pressure Switch it is required to cycle power off and on through
the main switch to reset the steam boiler over temperature alarm.
Description
• This espresso machine comes with the
option of either a pressure switch or
a temperature probe for maintaining
pressure in the steam boiler.
• The temperature probe is standard on
all espresso machines. In some cases a
pressure switch may be used.
• The pressure switch regulates pressure
via a diaphragm type pressure switch.
The pressure may be adjusted via a
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 the value to Pr e s s u r e - s wi t c h or Te mp . Pr o b e then press
"Technical" Programming
small screw on the switch.
• When a temperature probe has been
installed the pressure in the steam boiler
is regulated by adjusting the temperature
of the steam boiler via the display.
• Since the temperature of saturated
water is proportional to the pressure it
is possible to control the pressure of the
steam boiler via a temperature probe.
or press to exit programming mode.
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