Operation Manual

4-4
IM 1F5B2-01E
■ Waterproof Construction
CAUTION
• The waterproof construction of ULTRA YEWFLO is designed to comply with the JIS
C0920 standard for water-tight equipment (compatible with IEC IP67 or NEMA4X)
which does not allow it to be immersed in water during use.
■ Mounting Position
ULTRA YEWFLO can be mounted vertically, horizontally or in any other position. For
a vertical pipe, mount ULTRA YEWFLO so that the process fluid is flowing upward,
always keeping ULTRA YEWFLO filled with the fluid.
IMPORTANT
•Mount ULTRA YEWFLO in such a manner that the pipe is constantly filled with the
running process fluid (see Figure 4.1-8).
■ Flushing of the Pipeline (Cleaning)
If scale or sludge (fur and/or dirt) is likely to be present inside the piping after the
installation of a new line or the repair of an existing line, flush the line before operation.
Figure 4.1-6 Flushing of Pipeline
■ Piping That Prevents Bubbles of Gas from Becoming Trapped
IMPORTANT
Avoid the application where the gas bubbles may be contained in the fluid to be
metered
When the flow contains bubbles, it is difficult to carry out metering. Therefore, avoid
such application. For example: when disburden fluid from tank car, it is possible to
produce the bubbles by the phenomenon occurred when the liquid level decreases.