Henny Penny 500 Service Manual page 90

emove the fry basket from the shortening.
5. Stir the shortening with the basket handle.
6. easure the temperature of the shortening using
an accurate, mercury tube type, deep fat ther-
mometer capable of measuring temperatures in the
250°F to 400°F range. (Henny Penny part number
12106.)
7. Insert the thermometer near the center of the
frypot to a depth of about 3 inches below the level of
shorten .ing.
8. Careful
ter.
.ly stir the shortening with the thermome-
9. Allow the mercury in the thermometer to rise to the
temperature of the shortening.
old the ther-
mometer straight up and down.
The temperature reading is to be taken just as
the TEMP indicator light goes off. This will give
the correct temperature rather than an override
temperature.
LO. If the temperature is within 5°F of the temperature
set on the thermostat, increase the thermostat set-
ting approximately 25°F. Wait until the indicator
light goes off, then again check the temperature of
the shortening. If it is again within 5"F, the ther-
mostat does not require calibration.
If the thermometer is accidentally broken, and
mercury and pieces of broken glass fall into the
shortening, discard the shortening and clean the
frypot thoroughly.
ercury is highly poisonous.