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Carbonization of Ceramics
If the ceramics take on a black sooty accumulation, the burners are receiving an insufficient amount
of air. Open the air shutters further to provide more air. If carbonization occurs during initial adjustment,
it will burn off as soon as proper adjustment is achieved.
Burner Performance
If, after a period of satisfactory operation, the burner flame characteristics should change or the length
of burner flame should be reduced, either the air mixer opening or the gas valve orifice has become
restricted. The burners should be cleaned every 60 days, or more often as required, by an authorized
servicer.
LIGHTING INSTRUCTIONS - MODEL GHCBO40 OVENS
1. If the oven pilot is out, turn the burner OFF. Wait 5 minutes before relighting.
2. Depress the red ignition button located on the oven control panel and ignite the pilot. Hold
60 seconds until pilot remains ON.
3. Adjust the oven pilot and burner for proper adjustment of minimum bypass setting. This
adjustment must be made at the time the broiler is installed. To adjust this flame:
•
Be sure oven burner pilot flame is ignited.
•
With oven cold, slowly turn dial (Fig. 16) counterclockwise from OFF until main burner gas
snaps on.
•
Remove dial.
•
With a screwdriver, turn bypass adjustment screw (Fig. 16) counterclockwise to increase the
bypass flame, or clockwise to decrease it, until flame over entire burner is approximately
(3.175 mm) high.
•
Replace dial.
CAUTION:
While making this adjustment, if the oven should become heated while the dial
is set at a low range (below 350°F [177°C]), the bypass flame will shut off completely. If this
occurs, turn dial counterclockwise slowly until bypass gas snaps on. Then check bypass
adjustment as stated above.
DIAL
POINTER "A"
MODEL
FDO
CALIBRATION
PLATE
Fig. 16
– 15 –
BY-PASS
ADJUSTMENT
SCREW
SCREW
CLEARANCE
SLOTS
CALIBRATION
SCREWS
PL-56560
/
"
1
8
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