Webasto HL 90 Owner's Manual - page 5
HL 90
1 Introduction
101
1
Introduction
1.1
Scope and Purpose
This repair shop manual is intended to support
familiarised personnel in the repair of air heaters HL 90 of
the Diesel type.
1.2
Meaning of Warnings, Cautions,
and Notes
WARNINGS, CAUTIONS, and NOTES in this manual
have the following meaning:
WARNING
This heading is used to highlight that non-compliance
with instructions or procedures may cause injuries or
lethal accidents to personnel.
CAUTION
This heading is used to highlight that non-compliance
with instructions or procedures may cause damage to
equipment.
NOTE
This heading is used to highlight and draw specific
attention to information.
1.3
Additional Documentation to be used
This workshop manual contains all information and
procedures necessary for the repair of air heaters HL 90.
The use of additional documentation is normally not
necessary. Operating instructions/ installation instructions
and the vehicle specific installation proposal may be used
as complementary information as necessary.
1.4
Safety Information and Regulations
The general safety regulations for the prevention of
accidents and the relevant operating safety instructions
have to be observed at all times. "General Safety
Regulations" beyond the scope of these regulations are
detailed in the following.
The specific safety regulations applicable to this manual
are highlighted in the individual chapters by Warnings,
Cautions, and Notes.
1.4.1 Legal Provisions for Installation
Within the scope of the StVZO (Road Licensing
Regulations of the Federal Republic of Germany) "Design
General Approvals", laid down by the Federal Office for
Motor Traffic, exist for the Air Heaters HL 90 with the
following official marks of conformity:
~ S 269 (Diesel)
The installation of the heaters is to be performed in
accordance with the installation instructions and must be
checked in case of
a) the vehicle type inspection in accordance with
§ 20 StVZO
b) the individual inspection in accordance with
§ 21 StVZO or
c) the examination in accordance with § 19 StVZO per-
formed by an officially authorised expert or examiner
for road traffic, a vehicle inspector or a public servant
as per section 4 of Annex VIII to the StVZO.
In the event of c) the installation must be certified on the
acceptance certificate formsheet included in the copy of
the "General Operating License" or on a formsheet
according to the specimen of an “approval” included in the
Traffic rules 1994, Page 148.
This validates the "Design General Approval". The
acceptance certificate must be kept with the vehicle. The
year of first operation must be permanently marked on the
identification label by removing the numerals of the years
not applicable.
The heat exchanger of the air heater remains
serviceable for a maximum of 10 years and must then
be replaced with an original spare part by the manu-
facturer or by one of its authorized workshops.
The heater must then be provided with a label marked
with the sales date and with the words "Original
Spare".
When replacing the heat exchanger it is mandatory
to also replace the overheat protection element
(temperature limiter) to avoid possible malfunctions
of old temperature limiters in use.
Should exhaust pipes be routed through rooms
accommodating persons, these pipes shall also be
renewed after 10 years by original spare parts.
When removing the heater the gasket below must be
renewed.
The heaters are cleared for heating the passenger and
driver cabins but not for heating compartments intended
for the transportation of dangerous goods.
The use of the heater in special vehicles (e.g. vehicles for
the transportation of dangerous goods ADR) or vehicles
not subject to the StZVO (e.g. ships) are ruled by partially
regional regulations.