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Q. If the burner
sometimes fails to ignite smoothly and starts with a puff, what can be done
to improve it?
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Check the electrode points for proper spacing. The points
should be 1/8" to 3/16" apart, 9/16" above the centerline of the nozzle and
then spaced correctly forward from the face of the nozzle for each different
spray angle.
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Clean carbon and dirt from the points and from the insulators.
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The transformer may be weak and not delivering full voltage or current. If
you don't have another transformer immediately available, file the
electrodes to a sharp point. This will give a better spark.
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Check for
cracked insulators. Sometimes an insulator may be cracked under the
electrode bracket and it is difficult to find. This could cause a high
voltage leak, thus reducing the voltage at the points.
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A partially plugged
nozzle causing off-center spray can cause delayed ignition. Above about 2.50
GPH a hollow cone spray sometimes may cause delayed ignition. Changing to a
solid cone sometimes helps that situation.
-
The air setting on the burner
may be wide open, thus tending to blow the fire out before it is
established. Adjust the air correctly.
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