Cleaning The Venturi - Coleman 9949A Serie Manuel D'assemblage, D'entretien Et D'utilisation

Suggested Cleaning Materials:
• Mild dishwashing liquid detergent • Hot water
• Wire brush • Paper clip • Nylon cleaning pad
• Soft brass-bristled brush • Putty knife • Scraper
Component Cleaning:
• BURNER: Wire-brush loose corrosion from the burner ex-
terior. Clean clogged gas port holes with an opened paper
clip. Replace corroded or damaged burners that would
emit excess gas.
• COOKING GRATES: Clean cooking grates with mild soap
and hot water. Remove stubborn residue with a mild
cleanser or scrub brush. DO NOT use a commercial
oven cleaner.
• GRILL INTERIOR: Remove grates. Scrape side with tools
and remove excess grease and cooking residue.

Cleaning the Venturi

Spider's nests or wasp's mud inside the venturi may
cause fire at the valve. If a fire occurs, immediately turn
off the gas supply at the control valve. (see representative
illustration in Fig. 36)
REPRESENTATIVE ILLUSTRATION
Fig. 36
Note:
Spiders and small insects can spin webs and build nests
inside the venturi tubes. This especially occurs in late
summer and fall before frost when spiders are most active.
These nests can obstruct gas flow and cause a fire in and
around the burner valves. Such a fire can cause operator
injury and serious damage to the grill. To help prevent a
blockage and ensure full heat output, clean and inspect the
venturi tubes often (once or twice a month). NOTE: Water or
air pressure will not normally clear a spider web.
Steps For Cleaning Venturi:
1. To remove the above obstructions, use an accessory
flexible venturi brush or bend a small hook on one end of a
20-inch long flexible wire such as the one shown in Fig. 37.
Fig. 37
WARNING
2. Remove the cooking
grates set aside. (Fig. 38)
3. Using a screwdriver, remove the screws holding the
cooktop and set aside. (Fig. 39)
Fig. 39
4. Using a screwdriver, remove the self-tapping screws
holding the burner clamps and remove the burners. (Fig. 40)
5. Look inside lower end of venturi tubes for nests, webs or
mud. If present, clean as noted in Step 1, Fig. 37.
6. Inspect and clean the burner if needed.
7. Replace the main burners and burner clamps, and
position the burners in the operating position.
8. Make sure the orifice fittings are inside the venturi tubes,
then tighten all self tapping screws. (Fig. 41)
9. Reinstall the cooktop and the cooking grates.
English-12
Fig. 38
Burner
Venturi
Tube
Fig. 41
Fig. 40