35
7
Instructions on Commissioning and Maintenance
7.2.7
Faults During Ignition
Faults occurring during ignition may have 4 causes.
1
In case of additionally monitoring the pilot flame, the pilot flame may not sufficiently be de-
tected.
•
Check the pilot flame for stable operation
•
Check that the pilot flame is sufficiently visible within the viewing scope of the compact
flame detector, and change pilot burner adjustment if required.
•
Realign the flame detector and check for cleanness of the viewing port
•
Measure the flame radiation captured by the compact flame detector (chapter
), and optimise alignment if required.
•
Increase sensitivity if required.
2
Interference
Refer to chapter
7.2.6 Fault on Flame Detection
3
If the flame has trouble to start-up, a timely recognition of the flame may be hampered by
an excessive start-up suppression.
4
Defect in the device.
7.2.8
Faults During Operation
Faults occurring during operation may have 3 causes.
1
The main flame may not sufficiently be detected.
–
Check the main flame for stable operation - provide for visibility throughout the oper-
ating range
–
Check the compact flame detector for proper alignment and make sure that the view-
ing port
–
Measure the flame radiation detected by the compact flame detector (chapter
), optimise alignment if required
–
Increase the sensibility if required
2
Interference
Refer to chapter
7.2.6 Fault on Flame Detection
3
Defect in the device.