Mercedes-Benz Conecto, Manual

Page: 51 / 268

Operation
Measures required in the event of inadequate low-temperature characteristics
Measures required in the event
of inadequate low-temperature
characteristics
If no diesel fuel with adequate low-tem-
perature characteristics is available, it
is possible to mix the necessary pro-
portion of kerosene with the diesel fuel,
preferably before the onset of the cold
weather. Each 5 % addition of kerosene
by volume improves low-temperature
characteristics by approximately 1 °C.
The maximum permissible proportion of
kerosene in the fuel mixture is 50 % by
volume.
Danger.
Risk of fire and explosion. For safety
reasons, only mix the kerosene with the
diesel fuel in the bus fuel tank.
Danger.
Risk of fire and explosion. The addition of
kerosene reduces the flash point of the
diesel fuel. This therefore increases the
dangers involved when working with this
fuel mixture. Risk of fire and explosion.
Comply with the relevant safety regula-
tions.
Note:
First add the kerosene to the fuel tank,
then the diesel fuel. Then let the engine
run for some time so that the fuel mix-
ture is dispersed throughout the whole
fuel system.
Note:
Engine output may be degraded in line
with the amount of additive. The amount
of additive should therefore be kept as
low as possible under consideration of
prevailing outside temperatures.
Measures required in the event of
pre-existing paraffin separation
The addition of flow improvers or ker-
osene has no effect if paraffin separation
has already occurred. Paraffin separa-
tion must first be reversed to remedy the
situation. This is achieved by heating the
entire fuel system.
The fuel system should be heated by
parking the bus in a heated indoor facil-
ity for a long period. The covers, of the
engine compartment for instance, should
be opened to accelerate the process.
Danger.
Risk of fire and explosion. Do not under
any circumstances heat components using
artificial sources of heat, e.g. heaters,
heat radiators, hot air blowers or blow
torches. Risk of damage to components.
Risk of fuel escaping. Risk of fire.
CONECTO (C628.3--)/08.2007 GB
41