Bentone B 2 KA, Installation And Maintenance Instruction, Page: 20 / 44

20 Bentone
5.3.1 Replacing the preheater
1. Switch off mains power, remove the cover and disconnect the
Europlug from the burner.
2. Remove the burner from the boiler by loosening the screw (A)
3. Loosen the two burner tube set screws one rotation. Turn to the right
and remove the burner tube.
4. Remove the preheating and ignition cables.
5. Loosen and pull the brake disc off the preheater. Clean the brake plate
as necessary.
6. Unscrew the nozzle.
7. Loosen the nut holding the oil pipe and preheater together.
8. Install the new preheater. Check the condition of the O-ring, replace if
necessary.
9. Fit the nozzle.
10. Fit the brake plate/electrode package. Check that the distance between
the nozzle
and brake plate is correct (refer to Technical data).
11. Connect the preheating and ignition cables.
12. Fit the burner tube and insert the burner into the boiler
13. Connect the Europlug and turn on the mains power.
14. Start the burner and check the combustion.