Napoleon-grills PRESTIGE II 308 User Manual download pdf (Page 9)

BURNER - The burner is made from heavy wall 304 stainless steel, but due to the extreme heat and corrosive environment,

surface corrosion will occur. Use a brass wire brush to remove surface corrosion. Clean any blocked ports using an opened

paper clip. Do not enlarge the burner ports. Spiders and insects are attracted to the smell

of propane and natural gas. The burner is equipped with an insect screen on the air

shutter, which will reduce the likelihood of insects building nests inside the burner, but

does not entirely eliminate the problem. The nest or web will 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) located either in the

center of the burner on 308 models, or above the burner to the left and

right of the centre of the burner on 450 models. Lift back of burner

upwards to remove. Use a flexible venturi tube cleaning brush to

clean out the inside of the burner. Shake any loose debris out of the

burner, through the gas inlet. Ensure that the insect screen is clean,

tight, and free of any lint or other debris. Check also that the valve

orifices are clean. Do not enlarge the orifices. Re-install the burner.

Check that the valve enters the burner when installing. Replace

burner cover and mounting screws to complete installation.

ALUMINUM CASTINGS - Clean castings periodically with warm

soapy water. Aluminum will not rust, but due to high temperatures

and weathering, oxidation can occur on aluminum surfaces. This will appear as white spots on the castings. To refinish the

castings, clean them and sand lightly with fine sandpaper. Wipe surface to remove any residue, and paint with high

temperature barbecue paint. Protect surrounding areas from over-spray. Follow curing directions found on the can.

TROUBLESHOOTING

Screw

Problem Possible Causes Solution

Low heat / Low flame when

valve turned to high.

For propane - improper lighting

procedure.

Ensure lighting procedure is followed carefully. All gas grill

valves must be in the off position when the tank valve is

turned on. Turn tank on slowly to allow pressure to

equalize. See lighting instructions.

For natural gas - undersized

supply line.

Pipe must be sized according to installation code.

For both gases - improper

preheating.

Pre-heat grill with both main burners on high for 10 to 15

minutes.

Excessive flare-ups/uneven

heat.

Sear plates installed incorrectly. Ensure sear plates are installed with the holes towards

the front, and the slots on the bottom. See assembly

instructions.

Improper pre-heating. Pre-heat grill with both main burners on high for 10 to 15

minutes.

Excessive grease and ash build

up on sear plates and in drip

pan.

Clean sear plates and drip pan regularly. Do not line pan

with aluminum foil. Refer to cleaning instructions.

Burners burn with yellow

flame, accompanied by the

smell of gas.

Possible spider web or other

debris, or improper air shutter

adjustment.

Thoroughly clean burner by removing. See general

maintenance instructions. Open air shutter slightly

according to combustion air adjustment instructions.

Improper air shutter adjustment. Close air shutter slightly according to combustion air

adjustment instructions.

Flames lift away from

burner, accompanied by the

smell of gas, and possibly

difficulties in lighting.

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Napoleon-grills PRESTIGE II 308 User Manual Page 9

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