TM 9-2330-364-14&P
4-70. JET LEVEL SENSOR REPLACEMENT (Con't).
a. REMOVAL OF JET LEVEL SENSOR
WARNING
When working inside tank, always provide adequate forced air ventilation
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at the manhole opening with air directed into compartment where work
is being performed. Forced air ventilation allows for removal of any ex-
plosive quantities and contaminants resulting from the type of work be-
ing done, and serves to prevent oxygen deficiency. Failure to follow this
warning may result in death to personnel.
NEVER work alone inside a tank: a second person must be stationed at
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the manhole opening.The person inside the tank must have a safety line
and harness on in case of emergency for rescue operations. In the event
a rescue operation is required, summon assistance IMMEDIATELY. DO
NOT attempt a rescue until assistance has arrived.
NOTE
If disconnecting precheck tubing (10) from jet level sensor (6), perform
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step 1.
Tag tubing (4, 10, and 11) for installation.
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(1)
Loosen nut (9) and disconnect precheck tubing (10) from jet level sensor (6),
(2)
Loosen two nuts (5) and disconnect tubing (4 and 11) from jet level sensor (6).
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