Maintenance Instructions - Napoleon PRESTIGE 450 Instruction Manual

Maintenance Instructions

We recommend this gas grill be thoroughly inspected and serviced annually by a qualified service person.
WARNING!
Always wear protective gloves and safety glasses when cleaning your grill.
WARNING!
Turn off the gas at the source and disconnect the unit before servicing. To avoid the pos-
sibility of burns, maintenance should be done only when the grill is cool. A leak test must be performed
annually and whenever any component of the gas train is replaced or gas smell is present.
Combustion Air Adjustment: (This must be done by a qualified gas installer.) The air shutter is factory set and
should not need adjusting under normal conditions. Under extreme field conditions, adjustments might be
required. When the air shutter is adjusted correctly the flames will be dark blue, tipped with light blue and
occasionally yellow.
• With too little air flow to the burner, the flames are lazy yellow and can produce soot.
• With too much air flow, the flames lift erratically and can cause difficulties when lighting.
Adjusting the air shutter:
1. Remove cooking grids and sear plates and leave lid open. You may have to open the door or remove the
top drawer (if equipped) to access the air-shutter screw located at the mouth of the burner. The back cover
must be removed for rear tube burner air shutter adjustment.
2. Loosen air-shutter lock screw and open or close air shutter as required. The normal opening settings are:
Main Tube Burner
*Infra-Red burners have no air adjustment.
3. Light the burners and set to high. Visually inspect burner flames. When the shutters are set correctly, turn
burners off, tighten locking screws, and replace removed parts. Ensure that the insect screens are installed.
Light Blue
Yellow Tipping
Dark Blue
Burner: The burner is made from heavy wall 304 stainless steel, but extreme heat and a corrosive environment
can cause surface corrosion to occur. This can be removed with a brass wire brush.
CAUTION!
Beware of Spiders.
Spiders and insects are attracted to the smell of propane and natural gas. The burner is equipped with an in-
sect screen on the air shutter, which reduces the likelihood of insects building nests inside the burner but does
not entirely eliminate the problem. A nest or web can cause the burner to burn with a soft yellow or orange
flame or cause a fire (flashback) at the air shutter underneath the control panel. To clean the inside of the
burner, it must be removed from the gas grill: Remove the screw (s) that attaches the burner to the back wall.
Slide the burner back and up wards to remove. Cleaning: Use a flexible venturi tube brush to clean the inside
of the burner. Shake any loose debris from the burner through the gas inlet. Check the burner ports and valve
orifices for blockages. Burner ports can close over time due to cooking debris and corrosion, use an opened pa-
perclip or the supplied port maintenance bit to clean them. Drill out blocked ports using this drill bit in a small
cordless drill. The ports are easier to clean if the burner is removed from the grill, but it can also be done with
Propane 1/4" (6mm) Rear Tube Burner
Natural 1/8" (3mm)
Propane Full Open
Natural 3/8" (10mm)
Burner
Burner Port
Approximately
1/2" (13mm)
www.napoleongrills.com
9