Bentone B40 MF - Replacement of Pressure Piston and Seat

37
Bentone B40 MF/B45-2 MF
For installers
G
H
H
Note:
* When servicing/replacing components that affect combustion, an
analysis and soot test shall be carried out on the installation.
!
During servicing, all
affected o-rings must be
replaced.
5.10 Replacement of pressure piston
and seat
1. Break the main current and disconnect the Euro plugs from the burner.
2. • Loosen the nut (G) and remove the burner from the burner fl ange,
B40 MF.
• Loosen the nuts (H) and pull the burner body out of the guides,
B45-2 MF.
3. Remove the brake plate from the oil pipe.
4. Remove the front nozzle holder (see fi gure)
5. Remove the seat(s) (U) and pressure piston(s) (V) (see fi gure)
6. Install new pressure piston(s) (see fi gure). Take care to ensure that
springs (X) and needles (Y) are correctly fi tted. During fi tting, make sure
that the o-rings are not damaged.
7. Install the seat(s)
8. Install the front nozzle holder (W); exercise caution when installing so
that o-ring(s) (Z) is/are not damaged. Ideally, installation should be done
using o-rings inserted in the groove on the front nozzle holder in order
to minimise the risk of damage to the o-ring.
9. Install the brake plate (See Setting the brake plate). (see technical data)
10. Check the ignition electrodes (See Setting the ignition electrodes). (see
technical data)
11. • Fit the burner and the burner fl ange together and secure with the nut
(G). Fit the Euro plugs and turn on the main current, B40 MF.
• Press the burner together and lock using the nuts (H). Fit the Euro
plugs and turn on the main current, B45-2 MF.
12. Check combustion *.