35
5 Commissioning
Perform the electrode test as follows:
NOTICE
Disconnect the pilot burner during the test from subordinate burner control.
Simulating the flame switches the flame relay.
Check possible causes of error:
1. No power supply voltage applied to the flame scanner.
2. Polarity of the inspection diode is reversed.
3. The ceramic insulators are moist, contaminated or broken.
4. Accidental earth of the ionisation electrode present.
5. Line break between ionisation electrode and flame scanner present.
If one of these faults is present, it must be rectified.
Then perform the test again.
If the flame scanner activates after repeating the test, the pilot burner
can be installed. Otherwise the pilot burner must be inspected by the manufacturer.
Fig. 5-6 Test of the ionisation electrode
1. Deactivate the flame scanner.
2. Clamp the red clamp of the inspection diode to
attach the ionisation electrode.
3. Activate the flame scanner.
4. Using the yellow/green clamp, connect to
earth, e.g. connect to the outer tube.
5. Check with contact to earth whether the
flame scanner activates.
If the flame scanner activates, the electrode is
functional, and the pilot burner can be installed.
If the flame scanner does not activate, the elec-
trode is not functional, and the pilot burner may
not be installed.
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General