Aalborg Vortex Insertion - Manual (Page 12)

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3.7 Installation and Use of Insertion Tool
The purpose of the insertion tool is to remove or install a meter during flow. The
insertion tool should be installed prior to making any adjustments to the meter
itself. The insertion tool is a separate device which can be installed on any
Insertion Model meter regardless of whether it is metering liquids, gases
or steam.
A) The bottom assembly is clamped around the seal assembly. This piece
is bolted together just below the machined step on the seal, thus insuring
that the bottom piece will not move during its operation.
B) Attach the upper two pieces of the tool to the meter shaft 2" down from
the top of the shaft.
C) Make certain that all nuts, bolts and couplings are tightened securely.
D) Recheck steps A through C to assure that everything is tightened and
corresponds to the drawing on the insertion tool. If the above steps
check out OK, open the valve.
E)
Loosen the nut on the split ring on the top of the seal assembly making
sure not to loosen the entire seal assembly out of the piping. (The larger
of the hex nuts is the split ring assembly.) This should be completely
loosened. This can be accomplished by holding the seal assembly in
place and then loosening the large hex nut on the split ring assembly.
The split ring nut should be loosened completely.
EXTREMELY IMPORTANT: This step is very important so that no
leakage, which could cause injury, occurs.
IMPORTANT NOTE: For final check, make certain that the meter has not
come loose from its 1-1/2 inch NPT connection and be sure that the
split ring nut and seal assembly are firmly in place.
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SAFETY PRECAUTIONS: Please keep clear of the meter when the line is
being pressurized. This is a good safety procedure for the installation
of any equipment in a pressurized line.
CAUTION: After the nut is completely removed, the pressure is now
against the insertion tool. Do not stand in the direction of extraction
as personal injury could occur. ƽ
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