AW Gear Meters JV-CG Series - Manual

AW Gear Meters Franksville, WI  web: www.awgearmeters.com
 Tel: 262-884-9800  Fax: 262-884-9810  Email: [email protected]
REV. 05/24/12 JVXX-CG W-DHB.DOC
MAINTENANCE GUIDE FOR THE JV-XXCG FLOW METER
Cleaning, inspecting or repairing a JV-CG Series gear flow meter is easily accomplished by
following the procedures below.
1. Remove the Sensor (1) from the flow meter body Upper Housing (4).
Using a 3mm hex key, loosen the 2 mounting screws inside the sensor.
2. The JV-30 size and smaller use M6 Bolts (2), loosen them using a 5mm
hex key. The JV-60 uses M10 Bolts (2), loosen them using an 8mm hex
key. Keep the 2 opposing bolts near the Locating Pins (7) engaged by a
few threads to avoid stress on the shafts and the locating pins during
housing separation. Please note the orientation of the Upper and
Lower housings with respect to each other so that the meter is
reassembled the same way.
3. Holding the Upper Housing (4), gently tap on the top of the 2 opposing
bolt heads to separate the Upper Housing (4) from the Lower Housing
(9). Do NOT use chisels or screwdrivers to split and pry apart the
housings. This can cause damage to the meter bodies and meter
internal parts.
4. After separation, remove, clean and inspect the gears (6) and shafts (5).
Clean out the o-ring groove, shaft holes and meter cavity.
5. After cleaning all parts completely, the Gears (6), Shafts (5) and
Locating Pins (7) can be reinserted. Check for free and easy rotation of
the gears.
6. Replace the O-Ring (8). PTFE o-rings should always be replaced.
FKM o-rings can be reused if they are not damaged.
Note: JVM-60CG Flow meters have 2 o-rings per meter.
7. During reassembly keep the meter housings as parallel as possible.
Make sure the housings are orientated the same way they were prior to
disassembly.
8. Replace the Washers (3) and the Bolts (2). Torque the bolts to 15Nm
for the12, 20 and 30 size meters and 30Nm for the 60 size meters. Do
not force the meter housings together. Do NOT use a hammer or other
such device. Over tightening will not cause damage to the meter, but
may fatigue the bolts and/or restrict the operation if internal surfaces are
not completely clean.
9. After reassembly, gently blow air through the meter so the gears spin.
This should be clearly audible given a moderate background noise level.
10. Clean any debris from the pickup holes before remounting the sensor (1)
to the Upper Housing (4). Use a 3mm hex key to tighten the mounting
screws in the sensor to mount the sensor on the housing. Note that
there is a correct and incorrect orientation for the sensor to be
mounted on the flow meter. Please see the AW Gear Meters website
for documentation if you do not have it. The orientation is noted by the
sensor’s connector with respect to the outlet port of the flow meter.
ENGLISH
. XXXX +/- .0005
.XXX +/- .001
.XX +/- .005
FRAC. +/- 1/64
ANG. +/- 1/2 DEG
SURFACE FINISH: 64 MAX
TOLERANCES UNLESS NOTED
THIS PRINT, INCLUDING THE INFORMATION
CONTAINED IN IT IS THE PROPERTY OF AW COMPANY.
IT IS CONSIDERED PROPRIETARY IN NATURE AND
MAY NOT BE USED OR DISCLOSED OUTSIDE OF
AW COMPANY, EXCEPT UNDER PRIOR WRITEN
AGREEMENT. ANY MODIFICATIONS MADE TO OR
COMMENTS WRITTEN ON THIS DRAWING
BY UNAUTHORIZED PERSONNEL WILL VOID
THIS DRAWING. ALL DIMENSIONS SHOWN
ARE SUBJECT TO CHANGE WITOUT NOTICE.
AW COMPANY USE ONLY
TITLE: --
PART NUMBER: --
DRAWING NUMBER: JV-20CG Exploded
DRAWN BY: --
REV:
DATE: 1/24/2006
CHECKED BY: -- PAGE: 1 OF 1 SCALE: 1:2
AW COMPANY
8809 INDUSTRIAL DR.
FRANKSVILLE, WI 53126
TEL. # (262) 884-9800
FAX. # (262) 884-9810 PURCHASED PART
NOTES:
MATERIAL: -- 1.
BREAK EDGES MAX .005" 2.
ALL PARTS MUST BE CLEAN AND FREE OF PARTICLES. 3.
REV. DESCRIPTION DATE BY
1
2
3
4
5
6
7
8
9
JV-20CG w/ DH-B Shown