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ADJUSTMENTS HEAVY DUTY COUNTERLINE
PAGE 30 OWNER’S MANUAL 1182845 REV 8
ADJUSTMENTS
ADJUSTMENT OF BURNER FLAME
The burners are adjusted at the factory. If necessary to adjust the burner flames, do the following for each
burner:
1. Turn the burner’s control knob to the full ON position.
2. If the appliance was cold, wait 5 minutes before adjusting the burner flame.
3. Loosen the set screw that holds the sheet-metal air shutter in place.
4. If the burner flame is blowing or lifting off the burner ports, close the air shutter until a stable flame is
obtained. If the flame is yellow-tipping, open the air shutter until a stable blue flame is obtained (a small
amount of yellow-tipping is normal when using propane gas).
5. Tighten the set screw that holds the sheet-metal air shutter in place.
6. Repeat Steps 1 through 5 for each burner.
When adjusting the burners of griddle models, note that over-gassed burners DO NOT heat griddles as
efficiently as those that are properly adjusted and also create “hot spots” on the griddle surface. Floating
and unstable burner and pilot flames will result when solid tops are lowered into position because the rear
openings of the burner compartment are not adequate to vent the enormous flue products generated by
over-gassed burners. The “unburned” gas will ignite at the rear and burn in this section and even up inside
the backguard or shelf venting system, causing structural members in this area to deteriorate. Also, some
of these hot flue products will vent forward into the manifold compartment resulting in problems with valves
and thermostats due to overheating. AGAIN, over-rated burners waste energy and cause service problems.
CONVERSION FROM ONE TYPE OF GAS TO ANOTHER
Each appliance is shipped gas-specific either for use with natural gas or for use with LP gas (propane). To
convert an appliance from one type of gas to another, do the following:
1. Remove the front panel by removing the knobs and screws on the front.
2. For each burner, replace the orifice with the type appropriate for the type of gas that will be used. For
special gas mixtures, and for altitudes above 2,000 feet, consult factory for appropriate orifice sizes.
3. For griddle models only, replace all the pilot assemblies.
4. Re-install the front panel.
5. Remove the hex-threaded plug from the pressure regulator (on the rear of the appliance). Inside is a
removable insert. Pull the insert out, turn it around, and put it back in so that the end facing out has the
letters corresponding to the type of gas that will be used (“NAT” or “LP”). Re-attach the hex-threaded
plug.
6. Check the manifold pressure (the procedure is on page 28).
Note: A kit for conversion to a different type of gas may be purchased from Southbend.