TD 18437
3. Cut the suspected sensor wire at least six inches
from the thermowell in which it is located.
4. Remove the sensor from the thermowell.
5. Carefully separate the wires and strip the insulation
off the end.
6. Pack a glass or container with ice and add some
water to make an ice water solution. Check the
temperature of the ice water with an accurate ther-
mometer. Ice water must be 32°F.
7. Insert the sensor into the ice water and soak for a
minimum of two minutes.
8. With a zerod ohmmeter, measure the resistance
across the two wires of the sensor lead. It should
read 2815 ohms 10% (281 ohms)on units built
before March 1994; 5% (140 ohms) on units built
from March 1994 and later.
2815
OHMMETER
OHMMETER
LEADS
BATH 32_F
SENSOR
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