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pILOT FLAME CHARACTERISTICS
Cleaning and pilot Maintenance
Oxygen Depletion sensor Pilot (Figures 31 and 32)
When the pilot has a large yellow tip flame, clean the Oxygen
Depletion Sensor as follows:
1. Clean the ODS pilot by loosening nut B from the pilot tubing.
When this procedure is required, grasp nut A with an open end
wrench.
2. Blow air pressure through the holes indicated by the arrows.
This will blow out foreign materials such as dust, lint and spider
webs. Tighten nut B also by grasping nut A.
Millivolt pilot
Figure 31
A
B
Intermittent Pilot
Figure 32
Warning:
Never use needles, wires, or similar cylindrical objects to
clean the pilot to avoid damaging the calibrated ruby that
controls the gas flow.