Campbell Scientific 03002, 03101, and 03301 R. M. Young Wind Sentry Sensors - Manual (Page 36)

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03002-5-90(D)
3. ALIGN VANE
a) Connect excitation voltage and signal conditioning
electronics to instrument according to wiring diagram.
b) Loosen set screw in side of vane hub.
c) Position instrument so crossarm is oriented north-south
with vane on north side. Orient vane to a known angular
reference. (See CALIBRATION section.)
d) While holding vane in reference position, slowly turn vane
skirt until signal conditioning system indicates proper value.
e) Tighten set screw on side of vane hub. Do not exceed
80 oz-in torque.
ANEMOMETER FLANGE BEARING REPLACEMENT
If anemometer bearings become noisy or wind speed threshold
increases above an acceptable level, replace the bearings. Check
bearing condition by hanging an ordinary paper clip (0.5 gm) on the
outside edge of one cup while the instrument is held in a horizontal
position. The cup should rotate downward. Failure to rotate due to
the weight of the paper clip indicates anemometer bearings need
replacement. Repeat this test at different positions to check full
bearing rotation. Replace bearings as follows:
1. REMOVE BEARINGS
a) Loosen set screw on side of cup wheel hub. Remove cup
wheel.
b) Remove three screws which hold two sections of main
housing.
c) Carefully separate upper and lower housing. Remove
coil transducer assembly from upper housing. Do not
disconnect from circuit board.
d) Loosen screw and remove ring magnet on end of shaft
inside upper housing.
e) Slide shaft and skirt assembly out of both upper and lower
bearings.
f) Using knife blade under bearing flange, carefully remove
upper bearing.
g) Using a pencil, gently push out lower bearing from above.
2. INSTALL NEW BEARINGS
a) Insert new upper bearing. Use care not to apply excessive
pressure.
b) Slide cup wheel shaft through upper bearing.
c) Slide lower bearing on shaft inside upper housing.
d) Using ring magnet assembly, push lower bearing into
its seat in upper housing.
e) Secure ring magnet to shaft using screw removed in
step 1d. Use a small amount of sealant on screw to
prevent it from loosening.
f) Join two housing sections. Secure using three screws
removed in step 1b.
g) Place cup wheel on shaft. Tighten set screw on side
of hub. Do not exceed 80 oz-in torque.
VANE FLANGE BEARING REPLACEMENT
If vane bearings become noisy or if wind direction threshold increases
above an acceptable level, replace the bearings. Check bearing
condition by adding two ordinary paper clips (0.5 gm each) to the
back edge of the vane fin while the instrument and vane are held
in a horizontal position. Gently release the vane. It should rotate
downward. Failure to do so indicates the bearings need replacement.
Repeat this test at various positions to check full bearing rotation.
Since this procedure is similar to anemometer bearing replacement,
only the major steps are shown here:
1. REMOVE BEARINGS
(Remove coupling disc - same as ring magnet)
2. INSTALL NEW BEARINGS
3. ALIGN VANE (See CALIBRATION section)
WARRANTY
This product is warranted to be free of defects in materials and
construction for a period of 12 months from date of initial purchase.
Liability is limited to repair or replacement of defective item. A copy
of the warranty policy may be obtained from R. M. Young Company.
CE COMPLIANCE
This product has been tested and shown to comply with European
CE requirements for the EMC Directive. Please note that shielded
cable must be used.
Declaration of Conformity
R. M. Young Company
2801 Aero Park Drive
Traverse City, MI 49686 USA
Models 03002, 03102, 03302
The undersigned hereby declares on behalf of R. M.
Young Company that the above-referenced product, to
which this declaration relates, is in conformity with the
provisions of:
Council Directive 2004/108/EC (December 15, 2004)
on Electromagnetic Compatibility
David Poinsett
R&D Manager