15
Heat & Glo • Crescent II • 2083-902 Rev. U • 4/15
Figure 3.1 IPI Pilot Flame Patterns
Firebox
Frequency:
Annually
By:
Service Technician
Tools needed:
Protective gloves, sandpaper, steel wool,
cloths, mineral spirits, primer and touch-up paint.
• Inspect for paint condition, warped surfaces, corrosion
or perforation. Sand and repaint as necessary.
• Replace appliance if
fi
rebox has been perforated.
Surface cracking or crazing of
fi
rebrick material is normal
and expected. The following types of cracks are acceptable
and do not require replacement of the unit or the
fi
rebox:
• Cracks that do not propagate entirely through the
material.
• Light fracture lines or “spider-webbing” on the surface of
the material.
• Cracks that are less than 1/32 in. wide and less than 3
in. long.
• If cosmetically unacceptable, such cracks may be
repaired with the patch kit. See Service Parts List for
details.
Cracks that are unacceptable and require maintenance:
• Cracks greater than 1/32 in. wide and 3 in. long are at
risk of growing.
• Cracks that penetrate entirely through the firebrick
material.
• Cracks that extend past the inner wall to the glass sealing
fl
ange.
Inspection for cracking should be run when the appliance
is cool. Cracks tend to close as the appliance heats up.
The crack may be repairable with the PATCHKIT-FB. Re-
port the case to a Product Specialist with Hearth & Home
Technologies.