Version With Methane System (Natural Power) - Fiat Punto Owner's Handbook Manual

10) When painting in an oven, the LPG
tank must be removed from the car and
later refitted by a Fiat Dealership. Although
the LPG system has numerous safety
features, it is advisable to proceed
as follows every time the vehicle is not in
use for a long period or moved in an
emergency as a result of a breakdown or
accident: unscrew the fastening devices A
fig. 34, then remove the cover B. Close
the LPG cock rotating the ring nut C
clockwise fig. 35. Refit the cover and
retighten the fastening devices.
11) Periodically (at least once every six
months) it is advisable to let the LPG in the
tank run out and check that it does not
exceed the maximum capacity of 39.6 litres
(including reserve) at the first refuelling
(see instructions in the "Capacities"
paragraph in this Supplement). If the level
is above 39.6 litres (reserve included)
contact a Fiat Dealership immediately.
12) Regardless of the last fuel system
used, at the following engine starting, after
the initial petrol stage, the system will
automatically switch to LPG.
13) When switching from petrol to LPG is
requested, a metal noise from the valves
which pressurise the circuit can be heard.
As a result of the switching logic described
above, a delay between the valve ticking
and the green warning light on the
instrument panel turning off is completely
normal.
14) In particular usage conditions, such as
starting and operation at low ambient
temperature or LPG supply with low
propane content, the system may switch
temporarily to petrol operation, without
indicating the performed switching. In the
event of low LPG levels in the tank or
requests for high performance (e.g.
overtaking, vehicle fully laden, steep hills)
the system may automatically switch to
running on petrol to guarantee the required
engine power; the icon on the
instrument panel turns on to indicate this.
When the above conditions are no longer
present, the system automatically returns
to running on LPG and the warning light
turns off. To achieve the automatic
switching described above, make sure that
there is always enough fuel in the petrol
tank.
15) Only use LPG for motor vehicles.
16) It is strictly forbidden to use any
additive in the LPG.
VERSION WITH
METHANE SYSTEM
(Natural Power)
40) 41) 42) 17)
INTRODUCTION
The "Natural Power" version features
two fuel systems, one for petrol and
one for natural gas (methane).
METHANE CYLINDERS
The vehicle has two cylinders (see fig.
38 and fig. 39) located under the floor
and protected by two special guards.
The methane, stored in the cylinders at
high pressure, flows through a
dedicated pipe to reach the pressure
regulator/reduction unit which supplies
the two methane injectors at low
pressure (about 9 bar).
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