S.p.A.
11
SUN
MAINTENANCE
The burner requires routine maintenance that must be carried out by qualified personnel.
Maintenance becomes essential for correct burner operation, thus preventing excessive fuel consumptions
and reducing the polluting effect.
Before cleaning or inspecting the burner in any way, always switch off the electricity supply by means of
the main switch.
Most of the parts can be inspected by removing the casing.
The basic operations are the following:
- Check that there are no clogged or dented fuel supply or return pipes.
- Clean the filter on the fuel intake line.
- Check that fuel consumption is correct.
- Clean the combustion head around the fuel outlet area, on the swirl disk.
- All the burner to run at top rate for about ten minutes, then examine combustion by checking:
• That all the parts described in this handbook are correctly calibrated
• The temperatures of the stack fumes
• The percentage of CO
2
in the fumes
• The percentage of CO (ppm)
• The opacity index of the fumes, according to Bacharach’s scale.
DEMOUNTING AND SERVICING THE BURNER (Fig. 11)
- Remove the casing (B) by slackening screw (A) for access to all the parts.
- Slacken nut (C) and position the burner in order to reach the injector fixed in screw.
Fig. 11
A
B
C
