16
Field recalibration is seldom necessary, and should not be resorted to unless experience with
cooking results definitely proves that the control is not maintaining the temperature to which the dial
is set. To check oven temperatures when recalibrating use a Robertshaw Test Instrument or a
reliable mercury oven thermometer.
CAUTION: THE RECALIBRATION SHOULD NOT BE MADE UNTIL THE BYPASS
(MINIMUM BURNER) FLAME HAS BEEN PROPERLY ADJUSTED.
ADJUSTMENT OF BYPASS (MINIMUM BURNER FLAME) - 136 SERIES
Enough gas must be bypassed through the heat control to keep the entire burner lit while in use.
The control regulates the flame from high to low.
PROCEDURE:
1. Turn dial to 300
º
F.
2. Light main burner.
3. After oven temperature rises and remains constant turn dial back to low. This closes main valve
and permits only the bypass gas to the burner.
4. Remove dial.
5. With a screwdriver, turn the bypass flame adjustor screw counterclockwise to increase the
bypass flame or clockwise to decrease it until the flame over the entire burner is approximately
1/8" high. Replace dial.
SERVICE
