Nieco 940 Gas, Owner'S Manual

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13
HOW TO CALIBRATE THE ATC
1. Loosen control knob lock screw and set ATC control knob to 600°F.
2. Turn on main ON/OFF switch.
3. Turn on motor ON/OFF switch and set motor speed control so that the broil belt is travelling at the correct
speed for the product.
4. Light the broiler following the lighting procedure in the manual and on the broiler lighting instruction plate.
5. Broiler should be in high gas pressure at this time (5” W.C. natural gas; 11” W.C. propane).
6. When the broiler reaches 600°F, the high gas will be shut off (amber light out) and the broiler will be in low
pressure (3” W.C. nat. gas; 8” W.C. propane.).
7. Forty minutes after lighting the broiler, slowly turn the ATC control knob up (clockwise) until the amber light
(high gas) comes on (photo A).
8. As soon as the high gas comes on, slowly turn the ATC control knob down (counterclockwise) until the
setting is10-20°F BELOW the point where the high gas came on.
9. Tighten control knob lock screw (photo B).
10. The control knob set point may need a minor adjustment the first day of operation in order to maintain the
10-20°F below the normal idle temperature. Once adjustment is correct, it need not be changed from day to
day unless the broiler operating conditions change.
WARNING
Never set the ATC control knob at a setting high enough to keep the broiler in high gas pressure. The machine
may be damaged, energy cost will be much higher, and some broiler parts may wear out prematurely.
SHUTDOWN PROCEDURE
FOR EMERGENCY SHUTDOWN, TURN MAIN POWER SWITCH AND GAS SUPPLY VALVE OFF.
For planned shutdowns, perform the following procedure:
1. Clear machine of all food products.
2. Turn main power switch off.
3. Turn motor power switches off.
4. Turn gas supply valve off.
CAUTION: Always turn machine completely off before pulling power plug.
CAUTION: If a flexible gas line is used it must be disconnected before moving machine.