Lennox Hearth Winslow PI40 - Manual (Page 20)

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NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE.
IMPORTANT CAUTIONS:
• UNPLUG POWER CORD AND ENSURE APPLIANCE IS COLD
BEFORE PERFORMING ANY MAINTENANCE WORK.
• Some brands of pellets produce more ash and clinkers than
others. Therefore the frequency of performing the following
cleaning procedures depends to a great degree on the quality
of the pellets burned.
• Not cleaning this unit will cause it to burn poorly and will
void your warranty for this appliance.
• When removing ash build-up, use an approved ash vacuum
only. A cleaning brush can be used to loosen any ash build-up
before vacuuming. DO NOT USE A STANDARD HOUSEHOLD
VACUUM OR “SHOP VAC” AS THE FILTERS WILL LEAK THE
FINE PARTICLES OF ASH INTO THE HOME.
Required Cleaning Schedule After Number Of Bags Burned:
Burn Pot = 10 bags
Ash Drawer = 50 bags
Flue passageways = 50 bags
Flue Fan = 100 bags
Blower = 100 bags
Notes
• Cleaning schedule will vary depending on quality of pellets used.
Burning high ash pellets will require more frequent cleaning.
• Using a drop cloth is recommended as some ash may spill onto the
floor during the cleaning process
Burn Pot Cleaning
The combustion fan comes on at high speed once an hour to blow the
byproducts of combustion out of the burn pot. However, the burn pot
should be cleaned more thoroughly after burning about 10 bags of pel-
lets. The burn pot has a number of holes in the bottom and sides that
provide combustion air to the pellets. The extreme temperatures in the
burn pot can cause the impurities in the pellets to form ash and clinkers.
When the insert is cool, open the front door and lift out the cast iron burn
pot. Scrape the inner bottom and sides of the pot with a screwdriver to
remove all ash and clinkers from these surfaces. Make sure all the holes
in the pot are open. Place the burn pot in the hole from which it was
removed. Make sure the high side of the pot is rotated toward the front
of the insert (see Figure 35). Push the burn pot down so surface A is
tight against the steel supporting the pot. Do not substitute any other
grate or pot for use in this insert.
Cleaning Glass
CAUTION: Do not open the front door when the fireplace insert
is hot. To open the door, follow the first two steps listed in Front
Door Removal on Page 23. Clean the glass using a soft cloth
or paper towel and a household glass cleaner or gas stove
window cleaner. A damp cloth with a small amount of ash from
the firebox can also be used to clean the glass.
Inspect Gaskets
Inspect the condition of the rope gasket around the door, window and ash
drawer, periodically, and replace if necessary. Inspect the die-cut gaskets
on the access covers (B and C in Figure 45A) and replace if necessary.
Cleaning the Heat Exchanger
CAUTION: Do not operate the heat exchange scraper when the
insert is hot. Located at the center of the Grill on the top front
of the insert is a bent rod that is attached to a scraper on the
heat exchange tubes. To remove ash build-up and maintain ef-
ficient heat extraction from the insert, this rod should be pulled
in and out at least weekly.
Cleaning the Flue Gas Passageways
Cleaning the flue gas passageways should be done at least once a year.
Burning high ash pellets may require this cleaning to be done more often.
Clean these passageways only when the insert and ash are cold, do not
start a fire in the vacuum cleaner by vacuuming up hot ash.
On each side of the insert there are two access covers (see B and C in
Figures 36A and 36B) that can be removed by unscrewing the two 5/32”
allen head screws. Insert a cleaning brush in the openings to loosen any
ash build-up and use an approved ash vacuum cleaner to remove the
loosened ash. Reinstall the covers when cleaning is complete.
Reinstall the ash drawer by inserting the drawer in the insert and refas-
tening the left and right latches securely. Note that if the ash drawer
does not seal tightly to the insert, the control board may detect a leak
and shut the insert down.
Figure 35
CLEANING AND MAINTENANCE
A
High Side Of Burn Pot
Towards Front Of Insert
A