L.B.White I-40 Manual De Usuario página 25

B. TESTING
The thermocouple includes an auto reset temperature
activated switch. See Fig. 22. The switch will open the
thermocouple circuit and shut off the safety valve if the
temperature at the air housing increases abnormally. To
test the thermocouple proceed as follows:
-- Remove the thermocouple from the heater
-- Connect an ohm meter between the thermocouple
contact nut and tip.
-- A reading of less than 1 ohm is acceptable. A reading
showing overload or infi nite resistance indicates an
open auto reset.
-- If open, allow the thermocouple to cool for 5 minutes.
Retest the thermocouple. If the reading is not 1 ohm or
less, replace the thermocouple.
I-40 Manual and Spark Ignition
Owner's Manual • I-40
25