espresso coffee machine - technician instructions
14
- english
R
• Connection is made with a flexible hose:
- use a hose that meets the standards in use (it is important to replace it periodically as indicated on the tube stamping).
- the hose must have a maximum length of 1 metre.
- attach the hose to the connection
(1)
. if necessary, install the conic connector
(8)
and related seal
(7)
.
- the hoses must not be placed near potential heat sources, they must not reach a temperature higher than 50°C.
- the hoses must not be subjected to traction or twisting stress, and they must not have any kinks in them. It must be possible to
inspect them along their entire length, and they must not come into contact with sharp objects or sharp corners.
• Connecting a rigid hose: connect the Ø8 copper tube Ø8 to the 1/4 gas connection
(1)
.
• Check that the type of gas utilised corresponds to the one indicated on the gas data plate of the machine. In case of different gas, replace
the injector
(2)
as indicated in the Gas Table on the next page, and replace the "Preparing gas" label on the boiler cover with that cor-
responding to the gas used (supplied with the injector). Ensure correct supply pressure by connecting a manometer to the fitting
(3)
and
check the air pressure between the input connector to the injector by connecting a pressure gauge (6) See section "Adjusting the gas";
• Check that the air aspiration height
(X)
corresponds to that indicated in the Gas Table on the next page. To carry out any adjustments
proceed as follows:
- loosen the screw
(4)
;
- move the suction cap
(5)
to the required height.
- tighten the screw
(4)
.
If, when starting the burner the colour of the flame is not blue, slightly modify the air aspiration height until the correct colour is obtained.
• As soon as connection is complete, check for any gas leaks by placing a soapy solution on all connections.
ATTENTION
If you need to connect the hose to the machine, we supply a conic
fi
tting
(8)
with seal
(7)
to be installed on the
fi
tting
cylinder
(1)
.
2
1
7
3
8
6
4
5
X
X
