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PILOT FLAME CHARACTERISTICS
INTERMITTANT PILOT
PILOT
SENSOR
IGNITOR
Correct Pilot Flame Pattern
Figure 28
PILOT
SENSOR
IGNITOR
Incorrect Pilot Flame Pattern
Figure 29
If pilot flame pattern is incorrect as shown in
Figure 29,
see
Troubleshooting.
CLEANING AND PILOT MAINTENANCE
Oxygen Depletion Sensor Pilot - Figures 30 and 31
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 30
A
B
Intermittant Pilot
Figure 31
WARNING
Never use needles, wires, or similar cylindrical objects to
clean the pilot to avoid damaging the calibrated ruby that
controls the gas flow.