9
Operation
CAUTION: Before installing, operating or attempting maintenance on a flow
meter, read the appropriate Maintenance Guide. As with any precision-
engineered device, always operate and maintain the equipment in
accordance with the manufacturer’s instructions.
Overview
Flow meters are designed to measure the flow of liquids, which assist in
cooling and lubrication. Always close meters to air except when air is part of
an automated purge cycle, such as certain paint systems. In this case, the air
segments are typically under 1 or 2 seconds and are interspersed with lubrication
liquid for a scrubbing effect; in addition, the air segments are short enough that
the flow meter does not dry out.
CAUTION: Do not dry lines using only pressurized air, as this will lead to
premature wear.
Running the Flow Meter
Never run the flow meter dry or spin with air only. Gear flow meters are
precision-engineered flow devices. Always maintain them in a clean, lubricated
condition with the internal parts wet at all times. Do not allow air or water to
contact the internal parts except in short (1-2 second) cycles as part of an
automated flush. If you flush meter with water, make sure to run non-corroding
fluid through the meter afterwards. Even stainless steel meters will stain or
corrode from the minerals in most water.
Ramp Up
Do not increase flow to a full flow condition instantaneously. Gear flow meters are
rugged yet precise instruments that respond almost instantaneously to changes in
fluid flow. To avoid damage to the system, increase flow to maximum over a few
seconds rather than instantaneously and do not inject high flow speeds into an
empty flow meter.
Regular Cleaning
Designing and maintaining a flush procedure that keeps the flow meter internals
clean and wet is critical to optimum performance and minimum maintenance.
Cleaning cycles vary due to the differences in coatings, equipment, and cleaning
fluids, and some testing may be prudent to determine the most efficient method.
More corrosive fluids may also require more frequency flush cycles, or if meter sits
idle for longer periods of time, such as between shifts, flushing may also be required
more often. Consult with the fluid manufacturer for recommended cleaning fluids.
Summary of Contents for FPD-4000 Series
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