Heat & Glo • ESC-42ST • 2146-900 Rev. V • 5/14
16
Figure 3.1 IPI Pilot Flame Patterns
• Inspect ori
fi
ce for soot, dirt and corrosion. Verify ori
fi
ce
size is correct. See Service Parts List for proper ori
fi
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 ori
fi
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:
Quali
fi
ed Service Technician
Tools needed:
Protective gloves, replacement light bulbs.
• See Section 14.F.
