Technical data

DBW 2010 / 2012 / 2020 / 2022 / 300 / 350 8 Service Tasks
801
8 The Service Tasks
8.1 General
The service tasks will be defined in this section that can
be carried out on the heating devices that are installed on
the vehicle
8.2 The tasks that will be carried out on
the heating device
Taking into consideration the danger of excessive heating
of the heating device and no response by the protection
against excessive heating in connection with this, the
main battery current should not be interrupted as long as
the heating device or the post-operation is in working
status.
It would be useful to dismantle the device before carrying
out more comprehensive repair tasks on the heating
device. The cooling liquid consisting of water and anti-
freeze should be filled following the work on the heating
circuit in accordance with the information provided by the
vehicle manufacturer and the air of the heating circuit
should be evacuated.
8.3 The tasks that are carried out on the
vehicle
ATTENTION
The temperature limit of 85
0
C should never be exceeded
near the vehicle (for instance, when painting tasks are
carried out on the vehicle).
.
8.4 The test operation of the heating
device
The heating device should not be operated in closed
locations such as garage and workshop without the
suction system, not even as time programmed.
8.5 The Maintenance Tasks
The following maintenance tasks should be carried out
due to the work security of the heating device:
• The combustion air should be checked with respect
to the openings of the suction line and as to whether
or not there is pollution at the exhaust exit and it
should be cleaned.
• The heating device should be operated in the period
of non-utilization approximately once every 4 weeks
for 10 minutes when the vehicle engine is cold and
the heating system is in “warm” status. This will
prevent the difficulties of starting.
• Attention must be paid at the time when the cooling
liquid of the vehicle will be replaced that the air of the
heating device and the circulation pump will be
carefully evacuated after the air of the cooling
system of the vehicle has been evacuated. The
missing amount of the cooling liquid must be added
in accordance with the data provided by the vehicle
manufacturer.
• The fuel filter or the filter element must be replaced
at least once a year and more often if the fuel is too
dirty in order to prevent the defects.
• The fuel pump and the fuel pipes must be replaced
immediately in case of a leak and once every 5 years
otherwise.
• The heating device must be checked regularly but at
the latest at the start of each period of operation in a
Webasto service station.