A-2
Maintenance plan
for heaters of type Thermo, Thermo E, Thermo S, Thermo plus
and Thermo E+ in buses und railway vehicles
Check / Maintenance
Important notes
Check result
Measured values,
accomplished repairs
OK
not
OK
c) Fuel pump / fuel hoses
Note:
Observe technical information if biodiesel
or FAME is used!
d) Replace fuel screen with gasket in the pump.
Replace the fuel pump
every 5, the fuel hoses
every 6 years, if biodie-
sel is used this interval
is shortened
Technical Information
Biodiesel / FAME
see
www.valeo-
thermalbus.com
4. Burner head
a) Inspect combustion air intake opening for clear passage.
b) Inspect hood for damage.
c) Clean flame detector inspection glass (in the disk).
d) Inspect condition of the ignition electrodes, if required adjust
or replace them.
e) Replace atomiser nozzle.
f) Check solenoid valve for leaks.
Replace damaged
parts.
Activate combustion air
motor using the diag-
nostic tool (STT),
solenoid valve must be
tight
5. Exhaust system
a) Inspect exhaust line for clear passage or damage, clean or
replace it as needed.
b) Remove combustion chamber from heat exchanger, inspect
for damage and contamination, clean and replace as
needed.
c) Insert combustion chamber and mount burner head. Ensure
proper fit and tight connection to the heat exchanger.
d) Combined nuts (M8) for burner head attachment, tightening
torque 7.5 +1 Nm, secure them.
e) Measurements
Target values and procedures are outlined in the workshop
manual
Ambient temperature (° C)
Exhaust temperature (° C)
CO
2
(Vol.-%) at 24V
Thermo
Thermo E 200
Thermo E 300
Thermo S
Thermo plus 230
Thermo plus 300/350
Thermo E+
CO
2
(ppm) at 19V
Rail versions
Smoke spot number acc. to Bacharach (all devices)
Fuel pump pressure according to Workshop Manual
Thermo, Thermo S
Thermo E 200, Thermo plus
Thermo E 320
Thermo E+
Secure them with
locking compound
Limits acc. to Regu-
lation ECE-R 122
see technical data
heater
10 ±0.5
9.5 ±0.5
10.0 ±0.5
9.5 +1.5
9.0 +1.5
9.5 +1.5
9.0 + 1.5
_
<1000
_
< 4
10 bar
8 +1 bar
9 +1 bar
9 +0.5 bar
Summary of Contents for Thermo E+ 120
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