AW-Lake MicroFlow, JVK, JV-CG, JV-KG Operating Manual
COMPANY
Positive Displacement Gear Meters
Installation, Operating &
Maintenance Manual
©2016 AW-Lake Company. All rights reserved. Doc ID:POSDISMAN082416
Table of Contents
Safety Denitions and Information ................................................................ 3
Unpacking .............................................................................................................. 3
Quick Start ............................................................................................................ 3
Install Pickup Sensor ............................................................................................. 3
Flush Piping ............................................................................................................ 3
Filtration .................................................................................................................. 3
Location ................................................................................................................... 4
Orientation ............................................................................................................. 4
Flow Direction......................................................................................................... 5
Product Description and Principle of Operation .......................................... 5
Filtration .................................................................................................................. 5
Installation ............................................................................................................ 5
Preferred Flow Direction ....................................................................................... 5
Preferred Orientation ............................................................................................ 6
Location ................................................................................................................... 6
Installing a Bypass ................................................................................................. 6
Pickup Sensor ......................................................................................................... 6
Location ................................................................................................................... 7
Installation .............................................................................................................. 7
Operation .............................................................................................................. 8
Overview ................................................................................................................. 8
Running the Flow meter ........................................................................................ 8
Ramp Up ................................................................................................................. 8
Regular Cleaning .................................................................................................... 8
End of Shift and Overnight Preparations ............................................................ 9
Breakdown .............................................................................................................. 9
Plugging ................................................................................................................... 9
Filtration .................................................................................................................. 10
Maintenance ......................................................................................................... 10
Use the Maintenance Guides ............................................................................... 10
Flow Testing ............................................................................................................ 10
Plugging and Filtration .......................................................................................... 10
Calibration .............................................................................................................. 11
Storage .................................................................................................................... 11
Flow Meter Do’s and Don’ts ............................................................................... 11
Calibrations ........................................................................................................... 12
If ow readings are too high ................................................................................. 12
If ow readings are too low .................................................................................. 13
If it is necessary to adjust the existing k-factor .................................................. 13
If it is necessary to re-calculate a new k-factor .................................................. 13
Trouble-Shooting Guide ..................................................................................... 14
2
Safety Denitions and Information
Do not attempt to install or use your AW Gear Meters product until you have read
the safety instructions in this section. Save this manual and keep it in an easily
accessible place.
Unpacking
Separate the flow meter from packaging materials and check for any visual
signs of damage. If you determine there has been damage caused by shipping,
file a claim with the shipping company. If the flow meter appears to have
been improperly assembled or does not operate properly, return the product
for replacement or repair (see Limited Warranty information at the end of this
manual).
Quick Start
To set up, install and operate your flow meter quickly, follow these step-by-step
instructions. Detailed installation, operational, and maintenance instructions begin
on page 5 in this manual. More information is also available in the Maintenance
Guide appropriate for your flow meter.
Install Pickup Sensor
Before attaching the sensor to the flow meter, check for any potential clearance
issues. It may be easier to install the sensor after you have installed the flow
meter in the line.
CAUTION: Whether the sensor requires tool or hand installation, tighten with
hand-tighten torque only.
NOTICE: Some ow meters are shipped with the sensor already installed.
Flush Piping
If feasible, flush piping to remove dirt and debris before installing flow meter.
Filtration
Filtration is recommended to prevent contaminants from entering the flow meter.
3
Figure 1: Typical flow meter installation with bypass
See flow meter Data Sheet for specific filter, including mesh weight and size.
Location
It’s best to install the flow meter upstream from control valves and fluid
regulators, if possible. See Figure 1.
Orientation
Positive displacement gear flow meters can be installed either a horizontal or
vertical (flow up) orientation. 2-3 psi of backpressure is required to assure
the meter is always full of fluid. No straight run pipe is required upstream or
downstream of the meter.
Figure 2: Flow meter with direction of low marked with arrow
4
Flow Direction
Flow direction is marked with an arrow on the flow meter. See Figure 2.
Product Description and Principle of
Operation
AW Gear Meters positive displacement gear flow meters are similar in design to
the gear pump. However, the principle of operation is reversed: instead of the
gears driving the medium, the medium drives the gears. A non-intrusive sensor
detects the movement of the gear. As each tooth passes the sensor, the sensor
produces a square-wave pulse and measures a discrete volume of liquid. The
resulting pulse train is proportional to the actual flow rate, providing a highly
accurate representation of the fluid flow. All flow meters are designed with
highly wear-resistant moving parts to provide exceptionally long service life. The
materials of construction are:
• stainless steel or high-strength aluminum housing
• stainless steel gears
• either tungsten carbide sleeve bushings or stainless steel ball bearings
(depending on model)
The fluids you are metering should be compatible with these materials.
Filtration
Filtration depends on the model. Make sure to follow proper filtration requirements
for your specific model. Because the internal assembly has very small
clearances, small filter sizes are required, especially for ball-bearing flowmeter
versions.
NOTE: Filters are meant to lter out impuries in the uid stream. If you are measuring uids with
llers, even if the llers are smaller than the maximum recommended lter size, please consult the
factory for correct meter selecon.
Installation
Preferred Flow Direction
The preferred flow direction is marked with an arrow on the meter showing the
flow direction in which the flow meter was calibrated (see figure 2). However,
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