THERMOBILE AT 400 Serie Manuel De L'utilisateur page 24

English
10. Remove the combustion air fan (H) with
motor support, see fig. 3.
11. Unscrew the back panel from the heater
and turn it 180° to the fuel tank.
Temporarily support the back panel in
this position.
12. Remove the casing of the combustion air
fan.
Warning
Do not change the position of the
valve in the casing.
13. Unscrew the frame of the combustion
chamber from the groundplate of the
heater.
14. Lift the combustion chamber with heat
exchanger from the heater.
Do this with another person.
15. Unscrew the connection of the
combustion chamber and the heat
exchanger.
16. Remove the strip between the
combustion chamber and the heat
exchanger.
17. Pull the heat exchanger from the
combustion chamber.
18. Remove upper and lower cover of the
heat exchanger.
19. Clean the heat exchanger internally with
a brush and remove dirt with a vacuum
cleaner.
20. Re-install the upper and lower cover of
the heat exchanger.
Always apply new gaskets between
the upper and lower cover and the
heat exchanger.
Re-install the heater in reversed order.
Apply the wiring of the thermostats
according to the electrical circuit
diagram. The thermostats are equal.
24
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40.020.942 - rev. 04 - 2011
5.6 Cleaning the flue (fig. 8)
1. Remove the bottom cover (B) of the T-
piece (A).
2. Clean the flue from top to bottom with a
flue brush.
3. Check the connections for leakage.
4. Check the flue parts for rust.
Caution
Rust formation indicates that chlorine
containing materials have been
burnt.
Chlorine containing materials
seriously damage the heater. This
may void your warranty.
Contact your dealer for instructions
on how to test waste oil for chlorine.
Reposition the bottom cover.
5.7 Removing the fuel tank (fig. 10)
1. Drain the fuel tank through the drain
cock, see fig. 3 (L).
2. Push the tank bolt up, see fig. 10 (C).
3. Support the fuel tank with a wooden reel
(A).
4. Remove the black knurled bolt (B) on the
left and right side of the fuel tank.
5. Remove the fuel tank using both hands
by grasping the bottom of the tank.
6. Remove the wooden reel.
7. Gently lower the fuel tank and take the
fuel tank from the heater.
Remove the fuel tank with care: the
fuel system is installed in the fuel
tank.
Install the fuel tank in reversed order.
5.8 Adjusting the pressure of the seal
cord (fig. 11)
1. Open the control panel (A), see 3.3.
2. Unscrew nut (B).
3. Turn the bottom (C) of the vaporiser
slightly up or down (depending on the
situation).
AT 400 - 500 series