Monessen Hearth Artisan AVFL Series Owner's Manual page 22

Firebox
Frequency: Annually
By: Qualified 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 firebox has been perforated.
Control Compartment and Firebox Top
Frequency: Annually
By: Qualified 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.
Accessing the LEDs
1. Turn off gas supply and disconnect main power to ap-
pliance before performing any maintenance.
2. Remove glass deflection shield and place on a clean
flat surface.
3. Remove all crushed glass media from hearth surface.
4. Remove screen to access LED strips inside the LED
channels.
• Make sure LED strips are clear of any debris.
• If removing the LED strips simply peel from LED chan-
nels. Make sure channels are clear before placing
new LED strips with self adhesive into the channels.
• To clean the LED strips, use a damp cloth and care-
fully wipe the strips. NOTE: The channel is sharp
and contains screws extruding into the channel.
Engine Support
LED Control Module
LED Transformer
Figure 5.1 LED Access
22 Monessen • AVFL Series Owner's Manual • 4099-900 Rev. C • 06/21
Burner Ignition and Operation
Frequency: Annually
By: Qualified Service Technician
Tools needed: Protective gloves, vacuum cleaner, whisk
broom, flashlight, 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.
• Inspect for lifting or other flame problems.
• Inspect orifice for soot, dirt and corrosion. Verify orifice
size is correct. See Service Parts List for proper orifice
sizing.
• Verify manifold and inlet pressures. Adjust regulator as
required.
• Inspect pilot flame pattern and strength. See Figure 5.2
and 5.3 for proper pilot flame pattern. Clean or replace
orifice spud as necessary.
• Verify IPI millivolt output. Replace as necessary.
• Verify that there is not a short in flame sense circuit
by checking continuity between pilot hood and flame
sensing rod. Replace pilot as necessary.
Thermocouple
for Natural Gas
Figure 5.2 Correct Pilot Flame Appearance
Thermocouple
for Natural Gas
Figure 5.3 Incorrect Pilot Flame Appearance
Thermocouple
for LP
Thermocouple
for LP