Spheros thermo 231, Workshop Manual

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Thermo 230 / 231 / 300 / 301 / 350 1 Introduction
101
1. Introduction
1.1 Scope and Purpose
This repair shop manual is intended to support
familiarized personnel in the repair of water heaters
Thermo 230, 231, 300, 301
and
350
.
The water heater may only be operated with the specified
fuel (Diesel or also fuel oil EL) and the relevant designated
type of electrical connection.
1.2 Applicability of Manual
This manual is applicable only for heaters identified on the
title page. The different appearance of control units (see
2.5) allow to distinguish between model .30 and up with
control unit 1572 and the model .030 and up with control
unit 1572D.
In combination with control unit 1572D additionally a
different type of igniter box is installed (refer to 2.7).
The heaters
Thermo 231 and 301
are variants for vertical
installation.
1.3 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.
1.4 Additional Documentation to be used
This workshop manual contains all information and
procedures necessary for the repair of heaters
Thermo
230, 231, 300, 301
and
350 as well as Thermo Rail.
Operating instructions and installation instructions may be
used as complementary information as necessary.
1.5 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.
1.5.1 General Safety Notes
The year of first operation must be permanently
marked on the identification label by removing the
relevant number of the year.
The heaters are cleared for heating the vehicle engine
and the passenger cabin. The use of the heater in
vehicles not subject to the EU Directive 70/156/EEC (e.g.
ships) is partly governed by regional regulations.
For heaters designed for installation in rail vehicles, type
approval has been granted (not for Thermo 231 and 301)
by the Federal Railway Authority with the type approval
number: EBA 32AZ3/0174/08.
The heater may only be fitted in vehicles or in independent
heating systems with a minimum coolant capacity of
10 liters.
The heater may only be installed in motor vehicles or in
independent heating systems with a minimum coolant
capacity of 6 liters.
The heater must not be installed in the passenger or driver
compartments of vehicles. Should the heater neverthe-
less be installed in such a compartment, the installation
box must be sealed tight against the vehicle interior.
There must be sufficient ventilation of the installation box
from the exterior in order not to exceed a maximum
temperature of 85 °C in the installation box. Excessive
temperatures may cause malfunctions.
WARNING
Due to the danger of poisoning and suffocation the
heater must not be operated, not even with timed
operation, in enclosed areas such as garages or
workshops not equipped with an exhaust venting
facility.