Flowserve 90 Series Feedback Potentiometer - Manual (Page 4)

5. TROUBLESHOOTING
Problem Possible Cause(s) Solution
Indicates backwards Green and purple wires reversed Check wiring per Section 2.
Reverse-acting actuator Reverse green and purple wires.
Recalibrate potentiometer per Section 3.
Indication not consistent Gears slipping Check gear tooth engagement (approximately Z\zn").
Pinion gear set screw loose Recalibrate and tighten set screw.
Indication not correct Potentiometer needs to be calibrated Calibrate potentiometer per Section 3.
M.A.S. shaft turned more than 90 degrees Recalibrate for new quadrant.
4-20 mA output not Power supply not connected Check/connect power supply.
operating properly
Board not calibrated Complete calibration procedure per Section 4.
Wiring not correct Recheck wiring per Section 2.
Flow Control Division
Worcester Controls
Flowserve Corporation has established industry leadership in the design and manufacture of its products. When properly selected, this Flowserve product is designed to perform its intended function
safely during its useful life. However, the purchaser or user of Flowserve products should be aware that Flowserve products might be used in numerous applications under a wide variety of industrial
service conditions. Although Flowserve can (and often does) provide general guidelines, it cannot provide specific data and warnings for all possible applications. The purchaser/user must therefore
assume the ultimate responsibility for the proper sizing and selection, installation, operation, and maintenance of Flowserve products. The purchaser/user should read and understand the Installation
Operation Maintenance (IOM) instructions included with the product, and train its employees and contractors in the safe use of Flowserve products in connection with the specific application.
While the information and specifications contained in this literature are believed to be accurate, they are supplied for informative purposes only and should not be considered certified or as a guarantee of
satisfactory results by reliance thereon. Nothing contained herein is to be construed as a warranty or guarantee, express or implied, regarding any matter with respect to this product. Because Flowserve
is continually improving and upgrading its product design, the specifications, dimensions and information contained herein are subject to change without notice. Should any question arise concerning
these provisions, the purchaser/user should contact Flowserve Corporation at any one of its worldwide operations or offices.
For more information about Flowserve Corporation, contact www.flowserve.com or call USA 1-800-225-6989.
FLOWSERVE CORPORATION
FLOW CONTROL DIVISION
1978 Foreman Drive
Cookeville, Tennessee 38501 USA
Phone: 931 432 4021
Facsimile: 931 432 3105
www.flowserve.com
© 2003 Flowserve Corporation, Irving, Texas, USA. Flowserve and Worcester Controls are registered trademarks of Flowserve Corporation. WCAIM2042 10/03 Printed in USA