29
Servicing instructions
Burner maintenance
To ensure a high operational readi-
ness, functionality, safety and eco-
nomic efficiency, the user should
have the boiler system inspected by
an authorized person of the manu-
facturer or other specialist once a
year. The whole system must be
checked for proper operation and
faults detected should be rectified
without delay. It is advisable howe-
ver to make another inspection of
the system in addition to the one
specified herein. The inspection
should comprise the following work:
1.
Inspect the boiler internals and
insulating packages and replace
by new ones if required. Check
boiler for possible accumulation of
dirt.
2.
Remove the nozzle, check it and
replace it by new one if required.
3.
Clean the ignition electrodes.
4.
Check the ignition electrode and
spark functions and readjust if
required.
5.
Clean the burner interior and
exterior.
6.
Clean the fan impeller.
7.
Check the fan impeller for possi-
ble deformation and cracks.
8.
Clean the UV flame sensor.
9.
Clean the filters and screens.
10. Check the electrical connections.
11. Check the burner head setting.
Check the flat sealing between
gas head and burner tube for
absence of leaks.
12. Check the gas valves and instru-
ments group for absence of leaks.
13. Check the gas valves for absence
of leaks and clean condition.
14. Check the control equipment for
proper operation, setting and
safety period.
15. Check the pressure switch for
proper setting and operation.
16. Clean the air damper and check
for smooth operation.
17. Check the combustion process
and make exhaust gas tests:
• Fuel throughput rate adjustment
• Heating chamber temperature
(intake temperature)
• Exhaust gas temperature
• Pressure in combustion
chamber and exhaust gas pipe
• CO
2
and O
2
contents of exhaust
gases
• CO test, soot test
• UV sensor current measurement
18. Enter measured data in test
record.
N.B.: Before maintenance and adju-
stment work
- switch off the power supply to the sys-
tem. Master switch to "OFF".
- Close all shut-off valves upstream of
the burner.
12/2011 14 072 205
Summary of Contents for Low-NOx N10.12000.30 G-EU2
Page 33: ...34 Manufacturer s declaration...
