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Installation and maintenance instructions
3-9008-011
3
Installation and initial operation
3.1
Intallation requirements
On installations which are required to comply with the European Union Pressure
Equipment Directive (PED) 97/23/EC, it is the responsibility of the end user to ensure that
all Essential Safety Requirements of this directive are met.
The "PT" Meter has high resistance to shock while it is operating because of the supporting
effect of the fluid. This resistance is greatly reduced when the meter is out of the line or
inoperative.
MECHANICAL EQUIPMENT DAMAGE
Great care should be taken to prevent shock.
Failure to handle the meter with care during installation, removal or shipment may
result in damage to the meter.
If sealing compound is used on piping during meter installation, use it sparingly to avoid
fouling meter parts. Absolute cleanliness of meter internals is important, and precautions
should be taken to prevent entry of foreign matter. Use a strainer upstream of the meter
tube section. Another common cause of meter malfunction, due to fouling of the rotor, is
objects left inside the pipeline.
MECHANICAL EQUIPMENT DAMAGE
Flush and clean piping system prior to meter installation.
Failure to maintain absolute cleanliness of meter components may result in damage and
improper meter operation.
It is the responsibility of the end user to install the fitting in a well designed piping system
taking due regard of the following.
•
Internal/external pressure
•
Ambient and operational temperatures
•
Static pressure and mass of contents in operating and test conditions
•
Traffic, wind and earth loading
•
Reaction forces and moments which result from supports, attachments, piping, etc.
•
Corrosion, erosion, fatigue, etc.
•
Decomposition of unstable fluids
•
Possible damage from external fire
Installation and maintenance instructions
CAUTION
CAUTION
Installation and initial operation
October 2019
25
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