Maintenance
76
10.2.3.1
Removing the dust box
The following diagram shows the back of the HTFr with open dust box:
Fig. 32: Back of the HTFr with open dust box
Remove the dust box as follows:
1. Ensure that the dust box is open, see
”.
2. Remove the screws (
2
) and (
5
) and remove the housing of the dust box (
1
).
3. Pull off the O-ring (
3
).
If the O-ring is stuck to the combustion tube, slide the rear cover plate (
4
) back a little so
that you can carefully release the O-ring all round.
4. Pull off the cover plate (
4
).
The dust box has been removed.
1
5
2
4
3
