Cleaning & Maintenance - Williams 696542 Owner's Operation And Installation Manual

OPERATING HEATER
Continued

MANUAL LIGHTING
PROCEDURE
1. Remove lower front panel (see
Figure 7 page 7).
2. Follow steps through 5 under
Lighting Instructions on page12.
3. With control knob
strike match. Hold match to
pilot until pilot lights.
4. Keep control knob pressed in
for 30 seconds after lighting pilot.
After 30 seconds, release control
knob. Follow step 8 under Lighting
Instuctions on page 11.
5. Replace lower front panel.
INSPECTING BURNER
Check pilot flame pattern and
burner flame pattern often.
PILOT FLAME PATTERN
Figure 19 shows a correct pilot
flame pattern. Figure 20 shows an
incorrect pilot flame pattern. The
incorrect pilot flame is not touching
thermocouple. This will cause the
thermocouple to cool. When the
thermocouple cools, the heater will
shut down. If pilot flame pattern is
incorrect, as shown in Figure 20.
turn heater off (see To Turn Off

Gas to Appliance. Page 11
see Troubleshooting. Pages 13

through 15.
Figure 19 - Correct Pilot Flame
Pattern
Figure 20 - Incorrect Pilot Flame
Pattern
BURNER FLAME PATTERN
Figure 21 shows a correct burner

flame pattern. Figure 22 shows an
incorrect burner flame pattern.
If burner flame pattern is incorrect, as
shown in Figure 22
 turn heater off (see To Turn Off Gas
pressed in,
to Appliance page 11)
 see Troubleshooting, (pages 13
through 15)
Figure 22 - Correct Burner Flame
Pattern
Figure 23 - Incorrect Burner Flame
Pattern
CLEANING AND
MAINTENANCE
WARNING: turn off heater
and let cool before cleaning or
servicing.
CAUTION: you must keep con-
trol areas, burner, and circulating
air passageways of heater clean.
Inspect these areas of heater before
each use. Have heater inspected
yearly by a qualified service per-
son. Heater may need more frequent
cleaning due to excessive lint from
carpeting, bedding material, pet hair,
etc.
ODS/PILOT AND BURNER

CLEANING BURNER
PILOT AIR INLET HOLE
We recommend that you clean the
unit every 2,500 hours of operation
or every three months.
We also recommend that you keep
the burner tube and pilot assembly
clean and free of dust and dirt. To
clean these parts we recommend
using compressed air no greater
than 30 PSl. Your local computer
store, hardware store or home cen-
ter may carry compressed air in a
can. You can use a vacuum cleaner
in the blow position. If using com-
pressed air in a can, please follow
the directions on the can. If you don't
follow directions on the can, you
could damage the pilot assembly.
1.
2.
3.
Also clean the pilot assembly. A yel-
low tip on the pilot flame indicates
dust and dirt in the pilot assembly.
There is a small pilot air inlet hole
about two inches from where the pilot
flame comes out of the pilot assem-
bly (see Figure 24). 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.
CABINET
Air Passageways

Exterior

12
Use a vacuum cleaner, pressur-
ized air, or a small, soft bristled
brush to clean.
Shut off the unit, including the
pilot. Allow the unit to cool for
at least thirty minutes.
Inspect burner, and pilot for dust
and dirt.
Blow air through the ports/slots
and holes in the bumer.
Figure 24 - Pilot Air Inlet Hole
Use a vacuum
pressurized air to clean.
Use a soft cloth dampened with
a mild soap and water mixture.
Wipe the cabinet to remove dust.
cleaner or