8
S-176-9-E
CAUTION
5.3 Safety Precautions Before Operation Shutdown
(1) Valves should be closed progressively.
Rapid valve closure could, under certain tubing conditions, cause a sharp pressure rise by water
hammer, or hydraulic shock, which can result in damage to the meter.
(
2) Precautions against pressure buildup on closure
Complete closure of valves upstream and downstream of the meter creates a totally enclosed
space between them and a rapid buildup resulting from a rise in atmospheric temperature can be
a potential source of damage to the meter.
(3) Liquids ready to adhere or gel
With liquids that tend to adhere, solidify or gel when allowed to reside, ush away the metered
liquids thoroughly with appropriate detergent from the interior of meter before shutting down
meter operation. Negligence of this precaution and leaving the meter as it is, you may possibly
have problems when you want to start the meter the next time.
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