14
Outdoor Lifestyles by Hearth & Home Technologies, Inc. • TWILIGHT-II-MOD • 2290-900 Rev. C • 7/12
B. Maintenance Tasks-Qualifi ed Service
Technician
The
following tasks must be performed by a qualifi ed ser-
vice technician.
Gasket Seal and Glass Assembly Inspection
Frequency:
Annually
By:
Qualifi ed Service Technician
Tools needed:
Protective gloves, drop cloth and a stable
work surface.
• Inspect gasket seal and its condition.
• Inspect fi xed glass assembly for scratches and nicks that
can lead to breakage when exposed to heat.
• Confi rm there is no damage to glass or glass frame.
Replace as necessary.
• Verify that fi xed glass assembly is properly retained and
attachment components are intact and not damaged.
Replace as necessary.
Firebox
Frequency:
Annually
By:
Qualifi ed 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 fi replace if fi rebox has been perforated.
Control Compartment and Firebox Top
Frequency:
Annually
By:
Qualifi ed Service Technician
Tools needed:
Protective gloves, vacuum cleaner, dust
cloths
• Vacuum and wipe out dust, cobwebs, debris or pet hair.
Use caution when cleaning these areas. Screw tips that
have penetrated the sheet metal are sharp and should
be avoided.
• Remove all foreign objects.
• Verify unobstructed air circulation.
Glass Rock Media Maintenance
Frequency:
Annually
By:
Qualifi ed Service Technician
Tools needed:
Protective gloves, container, mild dish
soap, cloth or rag
• The glass rock media will loose its luster over time. This
is normal wear for this application. The appearance
of the media can be restored by periodic cleaning. It
is recommended that the glass rock media be rinsed
thoroughly with water to remove dust and debris. An
easy method to clean the glass rock media is to place the
contents of the bag into a container of water and mild dish
soap. Rinse thoroughly with clean water. Drain water
from container and allow the glass rock media to dry
thoroughly before installing into the fi replace. Reinstall
glass rock media into appliance using the instructions in
Section 11.
Burner Ignition and Operation
Frequency:
Annually
By:
Qualifi ed Service Technician
Tools needed:
Protective gloves, vacuum cleaner, whisk
broom, fl ashlight, voltmeter, indexed drill bit set, and a
manometer.
• Verify burner is properly secured and aligned with pilot
or igniter.
• Clean off burner top, inspect for plugged ports, corrosion
or deterioration. Replace burner if necessary.
• Verify batteries have been removed from battery back-up
IPI systems to prevent premature battery failure or
leaking.
• Check for smooth lighting and ignition carryover to all
ports. Verify that there is no ignition delay.
• Inspect for lifting or other fl ame problems.
• Verify air shutter setting is correct. See Section 11.F for
required air shutter setting. Verify air shutter is clear of
dust and debris.
• 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 sense
rod. Replace pilot as necessary.
Figure 3.1 IPI Pilot Flame Pattern
