Espresso Machine Installation, GS/3
Fill Water reservoir with Water.
Remove the drain tray
and slide the water reservoir until the water reservoir
fi
ll
cover is accessable. Remove the cover and
fi
ll water
reservoir with
fi
ltered water. Replace the
fi
ll cover and
slide the water reservoir to the operating position and
replace the drain tray. (See GS/3 Installation Guide for
addition instructions)
Connect Espresso Machine to Power Supply
. Connect
the espresso machine to a power supply that is rated
in accordance with the serial plate on the espresso
machine.
Filling the Boilers with Water.
Once the espresso
machine has been unpackaged, placed on a hard
surface, and the water reservoir full, it will be necessary
to
fi
ll the boilers with water. Complete the following
steps to properly
fi
ll the boiler tanks:
Steam Boiler.
Turn the main switch to position “1”
or ON, the automatic steam boiler level system will
be switched on, activating the auto-
fi
ll solenoid valve
and the water pump. This will
fi
ll the steam boiler
to a predetermined level and will shut off when full.
NOTE: It may be necessary to re-
fi
ll the water
reservoir during this process. Check to see if the
“Water Tank Empty” error message is present on
the display before continuing
.
Coffee Boiler.
The water
fl
ows inside the coffee boiler
directly when the water pump is activated. When the
GS/3 is turned on the electronics will activate the water
pump to
fi
ll both boilers. Since the in
fl
ow of water will
compress the air in the boiler it will be necessary to
remove or “bleed” the air from the coffee boiler. All air
must be removed in order to completely “saturate” the
coffee boiler/group assembly. To remove the air from
the boiler (“bleed the groups”) remove the group cover
from the top of the group head. Then loosen the bleed
screw (see picture) to allow air to escape until water
fl
ows from below the screw head. It may be necessary
to activate the brew process by pressing button #5 (the
continuous button) to force the air out of the group.
Tighten the screw to stop the water from
fl
owing. Over
tightening can cause damage to the sealing washer and
the group cap. If this sealing washer is damaged replace
washer with one included in accessory kit. Once all air
is removed from the coffee boiler, reinstall the group
cover. For more detailed instruction please refer the
GS/3 Installation Guide.
NOTE: It may be necessary to
re-
fi
ll the water reservoir during this process. Check
to see if the “Water Tank Empty” error message is
present on the display before continuing
.
Verify
fi
lling of Boilers.
The installation is now complete
and the espresso machine should be heating to the
operating temperatures.
1.
2.
3.
4.
5.
6.
Waiting for the Espresso Machine to Heat to Operating
Temperature.
During this time, it may happen that the
pointer of the coffee boiler pressure gauge reaches as
high as 12 bar. This may happen anytime that the heating
element is in the on condition. If the pressure exceeds 12
bar then it will be necessary to adjust the expansion valve
in such a manner that the pressure never exceed 12 bar.
In normal operating conditions, the coffee boiler pressure
gauge can read anywhere from 0-12 bar. When brewing,
the pressure should be set to approximately 9 bar.
When the espresso machine is ready to
operate all lights on the keypads will light.
NOTE: As the steam boiler reaches operating
temperature you may hear air and steam escaping
from the boiler. This is a normal sound. As the
water boils, air in the boiler is replaced by steam
and exits through the vacuum breaker. As the boiler
get closer to operating temperature the vacuum
breaker closes and the steam is no longer able to
escape. This process allows the air in the steam
boiler to escape and to be replaced by water vapor.
7.
5mm Hex Key
Bleed Screw
Figure 3 - "Bleed the Group"
Figure 4 - Key Pad buttons
Figure 5 - Key Pad buttons with lights on
GS/3
English
6
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Installation
Version 1.00
