8
TROUBLESHOOTING
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 main burners on high for 10 to 15 minutes.
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 2 screws located above the burner to the left and right
of the centre of the burner. 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.
If the burner is getting too little air, the flames will be lazy yellow, and possibly produce soot. If the burner is getting too much air, the flames will be
lifting erratically from the burner and may cause difficulties when lighting.
1. To adjust the air shutter, remove cooking grids and sear plates and leave lid open. The back cover must be removed for back burner air shutter
adjustment.
2. Loosen air-shutter lock screw and open or close air shutter as required. The normal settings are:
Main Burner
Propane
3/16"
Back Burner
Propane
3/8"
Natural
1/8"
Natural
1/8"
3. Light burners and set to high. Visually inspect burner flames. When shutters are set, turn burners off, tighten locking screw, and replace
removed parts.
WARNING
HOSE
-
Check for abrasion, melting, cuts and cracks. If any of these conditions exist, do not use gas grill. Have part replaced by
your gas grill dealer, or qualified gas installer.
DARK BLUE
LIGHT BLUE
BURNER
BURNER PORT
YELLOW TIPPING
APPROXIMATELY
1/2"
COMBUSTION AIR ADJUSTMENT - (This must be done by a qualified gas installer.)
The air shutter is factory set and should not
have to be adjusted under normal conditions. However, some extreme field conditions may exist that require adjustment. When
the air shutter is adjusted correctly, the flames will be dark blue with light blue tips, and occasional yellow tips.
Summary of Contents for Ultra Chef U405 CART
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Page 31: ...31 NOTES ...
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