Spheros thermo 231, Руководство по ремонту

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Thermo 230 / 231 / 300 / 301 / 350 8 Servicing
803
8.5.2 Burner Head Opening and Closing
or Removal and Installation
WARNING
The igniter box operates with high voltage. Prior to
opening the burner head the connectors of the cable
harness in the vehicle have to be disconnected to prevent
lethal injuries.
After closing and fixing burner head, reconnect connec-
tors in the vehicle.
NOTE
Maintenance on the heater is easy. By swinging the
burner head open the following components become
accessible:
–
fuel pump and fuel nozzle
– solenoid valve
– igniter box
– igniter electrodes
– flame sensor
– combustion chamber
– nozzle block preheater (if installed)
In order to obtain a convenient burner head opening angle
it is required to disconnect the electrical connection(s) to
the temperature limiter and temperature sensor.
Opening or removal
1. Disconnect electrical connections to temperature
limiter and temperature sensor.
2. Loosen nuts (3, Fig. 801) enough to release hinge
bolts (2).
3. Swing hinge bolts (2) out.
4. Swing burner head (4) open.
5. Remove cotter pin (1) as required to remove burner
head.
Closing or installation
1. As required fasten burner head (4, Fig. 801) in
position using cotter pin (1).
2. Swing burner head (4) closed and locate for
assembly.
3. Swing hinge bolts (2) into lock position and secure
with nuts (3).
4. Torque nuts (3) with 7.5 Nm + 1 Nm.
5. Reconnect electrical connections to the temperature
limiter and temperature sensor.
NOTE
When making electrical connections observe wiring color
codes.
Fig. 801 Swinging Burner Head open
1 Cotter pin
2 Screw (2)
3 Nut (2)
4 Burner head
1
2
3
4
NOTE
Depending on the burner head direction of swing the
cotter pin may be located on the opposite side.