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Heat & Glo • ESC-42ST • 2146-900 Rev. o • 5/1216
Figure 3.1 IPI Pilot Flame Patterns
• Inspect orifi ce for soot, dirt and corrosion. Verify orifi ce
size is correct. See Service Parts List for proper orifi ce
sizing.
• Verify manifold and inlet pressures. Adjust regulator as
required.
• Inspect pilot fl ame pattern and strength. See Figure 3.1
for proper pilot fl ame pattern. Clean or replace orifi ce
spud as necessary.
• Inspect IPI fl ame-sensing rod for soot, corrosion and
deterioration. Polish with fi ne steel wool or replace as
required.
• Verify that there is not a short in fl ame sense circuit
by checking continuity between pilot hood and fl ame-
sensing rod. Replace pilot as necessary.
Light Bulb Maintenance
Frequency: As needed
By: Qualifi ed Service Technician
Tools needed: Protective gloves, replacement light bulbs.
• See Section 14.F.