A-1
Maintenance plan
for heaters of type Thermo, Thermo E, Thermo S and Thermo
plus in buses und railway vehicles
Periodic heater maintenance
The heater should be inspected in periodic time intervals,
latest at the beginning of the heating period (time of in-
creased heater usage due to present weather conditions).
In principle the regulations of the vehicle manufacturers
as well as the relevant regulations of the German Federal
Railway Authority (EBA) and its technical service must be
adhered. If there no such regulations, Valeo prescribes
the here shown maintenance intervals for common
applications. For the execution of the work, the corres-
ponding workshop manual is to be used.
If heaters should be used in other vehicles and/or applica-
tions, the maintenance intervals may be shortened or
extended. In such cases please contact your dedicated
Valeo partner for further information.
Check / Maintenance
Important notes
Check result
Measured values,
accomplished repairs
OK
not
OK
1. Electrical connections
a) Examine electrical plug connections and the wiring harness
for visible damages, replace as required.
2. Heat exchanger
a) Check for external damage, discoloration caused by over-
heating and leaks.
b) Clean the heat exchanger inside and outside, remove soot
and debris.
Determine overheating
cause as needed (e.g.
water circulation sys-
tem), check overheat
protection.
3. Fuel system
a) Inspect fuel lines and connections for leakage.
b) Replace fuel filter insert with gasket. resp. replaceable filter.
Ensure connections to
fuel flow and return
lines are sealed tight!
If biodiesel is used a
semi annual filter
change is prescribed by
the manufacturer.
Re-tighten screw con-
nections and hose
clamps.
Änderungen vorbehalten. Für Übersetzungen ist die deutsche Fassung rechtlich bindend. Die aktuelle Fassung dieses Dokumentes steht unter
www.valeo-thermalbus.com
zum Download bereit. / Subject to modification. For translations the german version is binding. Latest version of
this document is provided for download on
www.valeo-thermalbus.com
.
Address of the operator
Date of maintenance
Vehicle data
Heater data
Type of heater:
Operating/ control device data
Fuel
Diesel fuel
Biodiesel
Date of commision
Heating oil EL
Ident. no.:
Serial no.:
acc. to diagnosis STT
(Spheros Thermo Test)
Summary of Contents for spheros thermo 230
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