Weber 3100 LP Owner Manual - Page 28
General Maintenance
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General Maintenance Weber Spider Stopper Guards Your Weber Genesis Gas Barbecue, as well as any outdoor gas appliance, is a target for spiders and other insects. They can nest in the venturi section of the burner tubes. This blocks the normal gas flow, and can cause the gas to flow back out of the air shutter. Figure 6. This could result in a fire in and around the air shutters, under the control panel, causing serious damage to your barbecue. Venturi Air shutter Venturi fin Figure 6 The Weber Spider Stopper Guard is factory installed. It fits tightly around the air shutter section of the burner tube and the valve, thereby preventing spiders and other insects access to the burner tubes through the air shutter openings. Figure 7. Main Burner Flame Pattern The Weber Genesis Gas Barbecue burners have been factory set for the correct air and gas mixture. The correct flame pattern is shown in Figure 8. Burner inside cooking box Tips occasionally yellowish Light blue Flames Figure 8 Dark blue If the flames do not appear to be uniform the length of the burner tube, follow the burner cleaning procedures. Main Burner Cleaning Procedure Turn off the gas supply. Remove the manifold. (See Section "Replacing the main burners".) Look inside each burner with a flashlight. Figure 9. Weber Spider Stopper Guard Figure 9 Figure 7 We recommend that you inspect the Weber Spider Stopper Guards at least once a year. (See section "Annual Maintenance".) Also inspect and clean the Spider Stopper Guards if any of the following symptoms should ever occur. 1. The smell of gas in conjunction with the burner flames appearing yellow and lazy. 2. Barbecue does not reach temperature. 3. Barbecue heats unevenly. 4. One or more of the burners do not ignite. ƽ DANGER Failure to correct these symptoms may result in a fire which can cause serious bodily injury or death and cause damage to property. Clean the inside of the burners with a wire (a straightened out coat hanger will work). Figure 10. Check and clean the air shutter opening at the ends of the burners. Check and clean the valve orifices at the base of the valves. Use a brass bristle brush to clean outside of burners. This is to make sure all the burner ports are fully open. Figure 10 ƽCAUTION: Do not enlarge the burner ports when cleaning. Replacing Main Burners a) Your Weber Gas Barbecue must be OFF and cool. b) Turn gas OFF at source. c) Remove control panel: take off the burner control knobs. Remove the screws holding the control panel in place. Lift off the control panel. 28