Oval Smart EX DELTA II Series, Instructions Manual

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D-582-3-E
5
Fig. .
Flow
Directin
Hold-Down Disc
Tapered Face Up
Arrow Mark
6.4.2 Installation Procedure
(See assembly drawing in Fig. .5 on page 3 and Fig. . on page 3.)
By turning in or out the handwheel, the probe of this flowmeter goes down or up and, without the need of
interrupting the line, it can be drawn out. When the meter is placed in service for measurement, the hold-
down disc is so positioned as to come in contact with the retaining ring (the guide is at match mark "A" on
the stud).
During maintenance or inspection, allow the probe to be housed completely in the short pipe (the guide is
at match mark "B" on the stud) and remove the meter from above the gate valve.
When removing or installing it, exercise care to minimize the possibility of unexpected trouble by
observing the following instructions:
() Install the hold-down disc in the right physical orientation.
(2) As the probe passes through the opening in the gate valve, make sure that the gate valve is in its fully
opened position when the probe is inserted, and that the probe is hoisted completely above the gate
valve when the gate valve is closed before attempting to remove or install.
(3) Be aware of the internal pressure when you remove the flowmeter. (Allow the pressure to escape
through the vent valve before attempting to remove the meter.)
() Directions of handwheel rotation
Clockwise rotation (viewed from top) → Probe descends.
Counterclockwise rotation (viewed from top) → Probe ascends.
Installation Instructions
() Install the hold-down disc between the
mounting nozzle (mounting flange) and gate
valve.
・ Use extra care to install the hold-down disc
in the right physical orientation at this time.
Ensure that the arrow mark on the side
of hold-down disc conforms to the actual
flow direction and that the arrow mark is on
the left hand side as viewed from the flow
direction (upstream side).
・ Install a gasket on top and bottom of the
hold-down disc.
(2) Install the meter.
・ Remove protective caps provided on the
sides.
・ Ensure that the arrow mark on the cover
conforms to the flow direction.
・ Ensure that the flanges of short pipe, gate valve and hold-down disc are flush and in line with the
periphery and the center mark (V-groove).
(3) With the gate valve fully open, insert the probe until the retaining ring comes into contact with the hold-
down disc by turning the handwheel. The guide should be at the match mark (V-groove) on the stud at
this time.
・ Ensure that the vent valve is fully closed and that the fitting bolts are tight.
・ In the event a leak persists through the gland packing, retighten the bolts holding the packing
retainer.