Desa LMFP33NR(A) Owner's Operation And Installation Manual page 24

1. Shut off the unit, including the pilot. Allow
the 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
Figures 43 and 44).
3. Blow air through the ports/slots and holes in
the burner.
4. Check the injector holder located at the end
of the 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 the primary air holes on the
injector holder.
6. In case any large clumps of dust have now been
pushed into the burner repeat steps 3 and 4.
Clean the pilot assembly also. A yellow tip on the
pilot flame indicates dust and dirt in the pilot as-
sembly. There is a small pilot air inlet hole about
two inches from where the pilot flame comes out
of the pilot assembly (see Figure 44). With the unit
off, lightly blow air through the air inlet hole. You
may blow through a drinking straw if compressed
air is not available.
Burner
Tube
Injector Holder
(May Be Brass or Aluminum
Depending on Model)
Figure 43 - Injector Holder On Outlet
Burner Tube
24
Primary Air Inlet
Holes (Shape of
Holes May Vary
by Model)
www.desatech.com
Burner
Tube
Figure 44 - Pilot Inlet Air Hole
111604-01H