F 500 V3 Oslo 4 / 20
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Fig. 18. Vacuum the combustor cells after brushing.
Fig. 17. Use a soft brush to clean the combustor.
9. Appendix A
Combustion System Maintenance
While catalytic combustor element is extremely
durable, you can prolong its service life with routine
inspections. The combustor itself is self-cleaning to an
extent, however, fly ash will eventually accummulate
within the element and upper combustion chamber. If
you suspect combustor system performance is lagging,
perform the following confirmation test.
1. Burn the fire at medium to high settings for two or
three hours at over 500°F to build a full bed of coals.
2. Set primary air at medium to medum low.
3. Confirm that monitor temperatures remain at 500°F
or higher. If the monitor temperature falls, the
combustor may need to be cleaned or replaced.
4. Repeat this test 2-3 times to confirm that the
combustor is not functioning properly.
A non-functioning catalytic combustor must be
replaced.
Regular Combustor Inspection
It is important to periodically monitor the operation of
the catalytic combustor to ensure that it is functioning
properly and to determine when it needs to be
replaced. A non-functioning combustor will result a loss
of heating efficiency, and an increase in creosote and
emissions. Following is a list of items that should be
checked on a periodic basis:
• Combustors should be visually inspected at least
three times during the heating season to determine
if physical degradation has occurred. The combustor
can be visually inspected for damage and fly ash
accumulation simply by opening the front door and
looking up at the catalyst located above the secondary
combuston baffle. Use a flashlight or headlamp to aid
inspection.
• Use a soft brush to sweep any fly ash or other loose
debris from the combustor cells. Fig. 17.
• A shop vacuum may be used to carefully remove
debris from within individual cell bodies. Use caution
as the cell material is fragile. Fig. 18.
• Inspect the combustor element for catalyst cell
collapse and the insulation panels for surface
degradation. Replace damaged components as they
are critical to the the proper functioning of the
stove. Replacement parts are available from your
authorized Jøtul dealer.
