14
D
S
GB
F
!
Deviations from the instructions contained herein are
not permissible as this could result in malfunctions.
Always mount the dosing pump with the delivery side
ascending – minimum ascent 15°.
When using plastic pipes and hose connections,
always insert appropriate supporting sleeves and
hose clamps.
It is not permissible to tap fuel downstream of the
vehicle’s own feed pump.
If pressures exceeding 0.2 bar and up to max. 4.0
bar occur in the fuel line, a pressure reducer (order
No. 22 1000 20 08 00) or a separate tank connection
(refer to page 16) have to be used.
If pressures exceeding 4.0 bar occur in the fuel line,
or if a return valve is installed in the return pipe (in
the tank), a separate tank connection must be used.
Fuel hoses and pipes may only be cut into lengths
with a sharp knife. Edges of cuts may not be
indented and have to be free of burs.
Never use plastic pipes but always rubber hoses
to connect the fuel branch pieces.
Protect dosing pump and filter against excessive
heating, do not mount in the vicinity of exhaust
silencers and exhaust pipes.
Fuel pipes must be securely mounted to avoid
damage and / or the formation of noise resulting from
vibrations (recommended guideline: spaced approx.
50 cm).
Never conduct or mount fuel pipes immediately along
exhaust pipe ducts of the
AIRTRONIC
or vehicle
engine! In case of crossovers, always ensure
sufficient thermal distance, if necessary, install heat
radiation guard plates.
§§ 45 and 46 StVZO have to be complied with when
laying fuel pipes and installing additional fuel tanks.
Fuel supply
Danger of fire and explosion!
Poisonous fumes!
Caution when handling fuel. Before filling up and
when working on the fuel supply, switch off the
vehicle’s engine and the
AIRTRONIC
.
Avoid open fire when handling fuel.
Do not smoke; this also applies there where
the presence of fuel is only noticeable on account
of its characteristic smell.
Do not inhale petrol fumes.
ATTENTION!
• The most important extracts thereof:
Fuel pipes need to be executed such that twisting
of the vehicle, movements of the engine and
similar do not have a detrimental influence on the
durability.
They must be protected against mechanical
damage.
Fuel carrying parts must be protected against heat
interfering with the operation and have to be
arranged such that dripping or evaporating fuel can
neither collect nor ignite on hot parts or on
electrical installations.
In the case of coaches, fuel pipes and fuel tanks
may not be situated inside the passenger
compartment or driver’s cab.
In the case of these vehicles, fuel tanks must be
arranged such that in case of a fire, the exits are
not immediately endangered.
The fuel may not be conveyed by means of gravi-
tational force or excess pressure in the fuel tank.
Installation specifications for separate fuel tanks:
In the case of coaches, installation in the
passenger’s compartment or driver’s cab is not
permissible.
No vehicle’s fuel filler neck may be situated within
the passenger compartment or driver’s cab.
Operation with bio-diesel (PME)
AIRTRONIC D2
AIRTRONIC
D2 is not certified for use with bio-
diesel. Admixtures of bio-diesel up to a magnitude of
approx. 10%, as in some countries, are allowed.
AIRTRONIC D4 / D4S
AIRTRONIC
D4 / D4S is certified for operation with
bio-diesel as per DIN V 51606 in free-flowing state
when installed in “normal horizontal position (exhaust
pipe downwards)”; bio-diesel is not permitted for any
other installation positions.
When using 100% bio-diesel,
AIRTRONIC
D4 / D4S
should be operated with pure diesel fuel twice per
year, preferably in the middle and at the end of a
winter period, to burn off any possible PME residues:
For this purpose, drain your vehicle tank as far as
possible (caution: do not forget to leave enough fuel
in the tank to get to the next fuel station!) and then
fill the tank with pure diesel fuel without bio-
admixture.
While using this tank filling, let
AIRTRONIC
D4 / D4S
run at the maximum temperature pre-selection stage
at least twice or three times for 30 minutes at a time.
You can use this for example to pre-heat your
vehicle before setting off. After this “diesel
operation” of your
AIRTRONIC
D4 / D4S, you can
use bio-diesel again as required.
When using mixtures of diesel / bio-diesel with up to
50% bio share, it is not necessary to use pure diesel
fuel now and then.
