Desa CLD3924PTC Owner's Operation And Instruction Manual page 19

We also recommend that you keep burner
tube and pilot assembly clean and free of
dust and dirt. To clean these parts we recom-
mend using compressed air no greater than
30 PSI. Your local computer store, hardware
store or home center may carry compressed
air in a can. If using compressed air in a can,
please follow directions on can. If you don't
follow directions on can, you could damage
pilot assembly.
1. Shut off unit, including pilot. Allow unit to
cool for at least thirty minutes.
2. Inspect burner, pilot and primary air inlet
holes on injector holder for dust and dirt
(see Figure 24).
3. Blow air through ports/slots and holes in
burner.
4. Check injector holder located at end of
burner tube again. Remove any large
particles of dust, dirt, lint or pet hair with
a soft cloth or vacuum cleaner nozzle.
5. Blow air into primary air holes on injector
holder.
6. In case any large clumps of dust have now
been pushed into burner, repeat steps 3
and 4.
Clean pilot assembly also. A yellow tip on pilot
flame indicates dust and dirt in pilot assembly.
There is a small pilot air inlet hole about 2"
from where pilot flame comes out of pilot as-
sembly (see Figure 25). With unit off, lightly
blow air through air inlet hole. You may blow
through a drinking straw if compressed air is
not available.
Injector Holder (May Be Brass or
Aluminum Depending on Model)
Burner Tube
Primary Air Inlet Holes
(Shape of Holes May
Vary by Model)
Figure 24 - Injector Holder On Outlet
Burner Tube
120890-01D
cLEANING AND MAINTENANcE
www.desatech.com
Continued
Figure 25 - Pilot Inlet Air Hole
LOGS
• If you remove logs for cleaning, refer to
Installing Logs, page 15, to properly replace
logs.
• Replace log(s) if broken or chipped (dime-
sized or larger).
BURNER pRIMARY AIR HOLES
Air is drawn into burner through the 8 holes
in brass fitting at entrance to burner. These
holes may become blocked with dust or lint.
Periodically inspect these holes for any block-
age and clean as necessary. Blocked air holes
will create soot.
MAIN BURNER
Periodically inspect all burner flame holes
with heater running. All slotted burner flame
holes should be open yellow flame present.
All round burner flame holes should be open
with a small blue flame present. Some burner
flame holes may become blocked by debris
or rust, with no flame present. If so, turn
off heater and let cool. Remove blockage,
blocked burner flame holes will create soot.
Pilot
Assembly
Pilot Air
Inlet Hole
19