Thermostatically Controlled Griddle Recalibration - Vulcan-Hart GH30 Service Manual

Thermostatically Controlled Griddle Recalibration

Field recalibration is seldom necessary and should not be resorted to unless cooking results definitely
prove that griddle surface temperature and thermostat setting do not agree. To check griddle
temperature, use an accurate "surface temperature thermometer" in the following manner.
1. Locate thermometer in center of griddle from front to rear: on 17" wide units, use one thermometer
and center from side to side; on 34" wide units, use two thermometers, one 8
the griddle.
2. Set thermostat dial to any temperature and allow griddle to heat thoroughly. When the griddle is
completely heated and the burner is on bypass gas, check the thermometer reading against the
thermostat dial setting. If the difference between the readings exceeds 15°F, the thermostat should
be recalibrated. Example: With the thermostat dial at 400°F and a thermometer reading of less than
385°F or more than 415°F, the thermostat should be recalibrated.
Recalibrate as follows:
1. Make note of number of degrees thermostat is off.
2. Remove thermostat dial and loosen calibration screws (Fig. 9) until plate moves freely.
3. Turn calibration plate the required number of degrees counterclockwise if the thermometer reading
was higher than the dial setting, or clockwise if the thermometer reading was lower than the dial
setting. The number of degrees between letters on the calibration plate is 50°F.
4. Hold calibration plate in desired position and tighten plate screws firmly.
FORM 30848 Rev. A (9-98)
Fig. 9
- 16 -
1 / " from each side of
2
PRINTED IN U.S.A.