APW Wyott GGT-48H - Manual (Page 9)

GGT CALIBRATION PROBE LOCATION
6.422
10.645
GGT-18
GGT-24
10.645
6.925 10.000
GGT-36
10.645
7.925 10.000 10.000
GGT-48
10.645
7.844 10.000 12.000 10.000
CALIBRATION PROCEDURE FOR GGT GRIDDLES
Locate the reading positions
Make sure the griddle surface is clean. Grease or food particles on the griddle will result in inaccurate
thermostat calibration.
Mark the locations where the temperature probe will be placed for testing. See the sketch provided. Starting
from the left side of the griddle measure 8” to the right and 10-5/8” from the rear splash guard. With a felt tip
pen mark this location. This is the location directly over the center of the left thermostat bulb. From this point
measure right 10” remaining 10-5/8” from the rear splash guard. Mark this location with a felt tip pin. This is
the location over the next thermostat bulb. For a 36” GGT repeat this one more time 10” to the right and for
the 48” GGT repeat this twice more 10” to the right always remaining 10-5/8” from the splash guard. After all
locations are marked center the temperature probe on each marked location, and then trace a circle
around the probe.
This procedure will place the temperature probe over the center of each thermostat bulb, and this is the only
place temperature readings should be taken.
Set all thermostats to 350ºF and allow them to cycle three to four times, or allow the griddle to preheat for ½
hour before proceeding. This makes sure the griddle temperatures have saturated the surface.
Determine the differential
Note the temperature for each section of the griddle as the burners ignite.
Note the temperature for each section of the griddle as the flame extinguishes.
The flame extinguish temperature minus the ignition temperature equals the differential.
EXAMPLE:
Flame extinguished 367ºF
Flame ignition 341ºF
Difference 26º F = Differential
9