33
Service Instructions
Maintenance Burner
Furnaces should be inspected once
a year. An extract from DIN 4755,
4756 reads as follows:
„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 speci-
fied 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 exte-
rior.
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.
12.
Check the control equipment for
proper operation, setting and
safety period.
13.
Check the pressure switch for pro-
per setting and operation.
14.
Check the oil pump by measuring
its pressure and vacuum levels.
15.
Check the hydraulic oil system for
absence of leaks.
16.
Check the oil hoses for possible
damage and twisting.
17.
Clean the air damper and check
for smooth operation.
18.
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
19.
Enter measured data in test
record.
Note: Before doing maintenance and
adjusting work:
- Disconnect the external power sup-
ply. Turn the main switch to the OFF
position.
- Close all shut-off valves upstream the
burner.
Swivelling out and closing the air
intake box
The air intake box is swivelled out as
follows:
- Loosen the plug connectors of the
power supply and the return line (1) on
the servomotor of the air damper.
- Pull off the hose of the air pressure
detector (3) from the nipple on the air
intake box (5).
- Screw out the screws (6) to (9).
- Swivel out the air intake box.
1
3
5
7
8
9
6
