9
Repeat this procedure at least ten times, using
enough water to cover the central depression
and thermocouple.
10
Place the Blow Clean upright and level on the
bench. Clear the nozzle with a slight stream
of gas. Hold the TC mount about 2 inches
from the nozzle, then aim the nozzle directly
at the thermocouple and release a slight
stream of gas to blow away any remaining
droplets.
11
Repeat Steps 1 through 10 using Wescor’s
Thermocouple Cleaning Solution with Anionic
Detergent (SS-223).
12
Inspect the TC mount for any residual conta-
mination. If foreign material cannot be
removed using this procedure, refer to
Section 4.6.
NOTE:
Some contamination is invisible, even under the micro-
scope. Inspection can reveal many types of contamina-
tion, but cannot replace the Clean Test.
SECTION 4
PREVENTIVE MAINTENANCE
4.3 Cleaning the TC Head
50
CAUTION!
Shaking or tipping the can of Blow Clean will severely
contaminate the thermocouple. The can must remain
flat on the bench.
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