Servicing Work; Working On Heater; Work On Vehicle; Heater Test Run - Webasto Dual Top Evo 6 Workshop Manual

7 Servicing work

7 Servicing work
7.1 General
This section describes the servicing work that can be carried
out on the heater when it is installed.
CAUTION:
There is a potential danger of burns as the heater
and its components may be very hot.
7.2

Working on heater

Disconnect the main power cable from the service battery
before carrying out any work on the heater. The battery
power must not be disconnected whilst the heater is
operating or slowing down as a result of the risk of the heater
overheating and the overheating guard thus being tripped. If
you wish to carry out extensive repair work on the heater, it
may be a good idea to remove it completely.
Refer to the relevant installation instructions for repairs that
necessitate the installation position being changed.
7.3

Work on vehicle

IMPORTANT:
A temperature of 85 °C must not be exceeded in
the vicinity of the heater in any circumstances (for
example when competing painting work on the
vehicle).
7.4

Heater test run

CAUTION:
The heater must not be operated in enclosed areas
such as garages and workshops without an
emissions extraction system.
7.5 CO setting
2
NOTE:
After repairing the heater and/or replacing the fuel
pump, the adjustment of the CO
checked.
IMPORTANT:
After replacing the control unit, the CO
must be checked and reset if necessary.
701
The CO
Diagnostics.
The heater is optimally set to a CO
operation at altitudes up to 2,200 m above sea level.
Continuous operation above 2,200 m above sea level can
result in heavy smoke and soot.
The measured CO
must be 5.0 to 8.0 % vol. under partial load (2 kW).
At full load (6 kW) it should be 9.0 to 13.0 % vol. after setting
the CO
value should be
2
value
2
Dual Top Evo 6 / 7 / 8
setting is carried out with Webasto Thermo Test PC
2
NOTE:
The CO value is corrected with the Webasto
2
Thermo Test PC Diagnostics. The CO
measurement and setting must be carried out at
the maximum heating capacity. The measurement
of the CO value is carried out approx. 20 mm in
2
front of the end of the exhaust outlet inside the
exhaust pipe with a CO
value at an ambient temperature of 20 °C
2
value.
2
value at the factory for
2
2
tester (e.g. from MSI).
2