Coleman 9928 manual Cleaning the Venturi, Steps For Cleaning Venturi

Cleaning the Venturi

WARNING

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 L.P. cylinder valve (see representative illustration in Fig. 29).

Fig. 29

REPRESENTATIVE ILLUSTRATION

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. 30.

Fig. 30

2. Remove the cooking grates set aside (Fig. 31).

Fig. 31

Spring

Latch

3.Using a screwdriver, remove the screws holding the heat tents and set aside (Fig. 32).

Fig. 32

4.Using a screwdriver, remove the self-tapping screws holding the burner clamps and remove the burners (Fig. 33).

Fig. 33

5.Look inside lower end of venturi tubes for nests, webs or mud. If present, clean as shown in Step 1, Fig. 30.

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 valve orifices are inside the venturi tubes and the venturi tubes are inside the burner tubes, then tighten all self-tapping screws (Fig. 34).

Fig. 34

Burner Tube

Venturi

Tube

9. Reinstall the heat tents and the cooking grates.

English-13