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 metering liquids, a "horizontal" line should gently slope upward
q When
for a sufficient distance downstream of the flowmeter to ensure that
it will always be filled with liquid.
7. MAINTENANCE. The following procedures are the minimum required for the
most common types of fan and turbine units. When developing maintenance
schedules, refer to the manufacturer's recommendations.
Annually, remove the meter head and inspect as
7.1 Annual Maintenance.
follows:
(a) Ensure that the rotor has no obvious signs of deterioration, abrasion
wear, or fouled debris.
(b) Ensure that the rotor shaft and bearings are not excessively worn,
are free of debris, and the propeller turns freely.
(c) Return insertion turbine rotor to the manufacturer for recalibration.
6-8
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