Temperature Control Recalibration; Standard Oven - Vulcan-Hart GH30 Service Manual

Ignite oven/griddle burner pilot. With oven/griddle cold, turn the thermostat dial slowly clockwise
until main burner gas is heard snapping ON. Remove the dial. With a screwdriver, turn the bypass
adjustment screw (Fig's. 3 & 4) counterclockwise to increase the bypass flame, or clockwise to
decrease it, until flame over the entire burner is approximately
screw is located to the left-hand side of the thermostat control for the oven section, and on top of
the thermostat control for the griddle. After adjustment has been made, replace dial.

TEMPERATURE CONTROL RECALIBRATION

Standard Oven

Field recalibration is seldom necessary and should not be resorted to unless experience with cooking
results definitely proves that the control is not maintaining set temperature. To check oven temperatures
when recalibrating, use a Robertshaw Test Instrument or a reliable mercury oven thermometer.
1. Place thermocouple of test instrument or thermometer in the middle of the oven. Close oven door.
2. Light main burner.
THERMOSTATICALLY CONTROLLED GRIDDLE
THERMOSTAT BULB ASSEMBLY
1
/
Fig. 3
Fig. 4
- 13 -
" high. The bypass adjustment
8