Thermo Pro 90
1 Introduction
101
1
Introduction
1.1
Contents and purpose
This workshop manual is designed to assist trained personnel
in the repair of Thermo Pro 90 water heaters.
This workshop manual contains all the information and
instructions necessary to repair Thermo Pro 90 water heaters.
1.2
Meaning of signal words
Throughout this manual, the signal words CAUTION, ATTEN-
TION and NOTE have the following meanings:
CAUTION
This signal word is used to highlight operating instructions or
procedures which, if not followed or not followed correctly,
may result in personal injury or fatal accidents.
ATTENTION
This signal word is used to highlight operating instructions or
procedures which, if not followed or not followed correctly,
may result in damage to the equipment or its components.
NOTE
This signal word is used to draw your attention to a special
feature.
1.3
Additional documentation to be used
Use the following documents:
•
Installation Instructions
•
Heater operating instructions
•
Control element operating instructions
•
Optional (if installed) vehicle-specific installation
documentation
1.4
Legal requirements and safety
information
The general accident prevention regulations and valid opera-
tional safety instructions must be observed.
"General safety requirements" that extend beyond the frame-
work of these regulations are specified in the following.
The special safety requirements that pertain to this workshop
manual are highlighted in the individual sections and proce-
dural descriptions.
1.4.1 Statutory regulations governing
installation
The Thermo Pro 90 heater has been type-tested and approved
in accordance with ECE-R 10 (EMC) and ECE-R 122 (heater).
Stipulations of Annex 7 to the Regulation ECE-R 122 and the
requirements specified in the installation instructions must be
observed for the installation.
NOTE:
The stipulations of these regulations are binding in the area
covered by EU Directive 70/156/EEC and/or 2007/46/EC (for
new vehicle models from 29/04/2009) and should also be
observed in countries where there are no specific regulations.
The Thermo Pro 90 water heater has been designed for instal-
lation in commercial vehicles. If it is installed in special-pur-
pose vehicles, the applicable regulations must be taken into
account. Alternative applications must be agreed upon with
Webasto in advance.
1.4.2 General safety information
Follow the Installation Instructions.
The year of initial commissioning must be permanently
marked on the type label by removing the numbers of
the inapplicable years.
The heaters are approved for heating the vehicle engine and
the cab but they are not approved for heating cargo areas
used to carry dangerous goods/hazardous substances.
The heater may only be installed in motor vehicles or in inde-
pendent heating systems with a minimum coolant capacity of
6 litres.
The heater must not be installed in the driver's or passenger's
compartment of vehicles. If the heater is nevertheless installed
in such a place, the casing must be tightly sealed from the
vehicle interior. If the heater is in an enclosure, outside air ven-
tilation must be sufficient. Additionally, the ambient tempera-
ture regarding fuel pump and fuel line, combustion air intake
and heater must be observed (see technical data). Faults may
occur if the temperature exceeds this level.
Follow the instructions of the vehicle manufacturer when
checking the coolant level.
Failure to follow the installation instructions and the notes
contained therein will result in a disclaimer of liability by
Webasto. The same shall apply if repairs are carried out incor-
rectly or with the use of parts other than genuine spare parts.
This will render the general type approval of the heater and
therefore the vehicle type approval invalid.
CAUTION
Risk of burn injuries as the heater and its add-on parts
can become very hot.
