Troubleshooting – Flowserve Electro-pneumatic Transducers User Manual

Page 4

30-4

5. Place the nozzle block (113) on the upper dia-

phragm (112) with the nozzle down, aligning the
hole in the corner with the orifice in the I/P base
(109).

6. Place the lower diaphragm (114, with four holes)

onto the assembly with the convolution facing up,
aligning the four holes appropriately.

7. Place the vent block (115) on the assembly with the

vent hole on the side aligned with the NPT opening.
Be certain the mounting holes and pneumatic pas-
sages are aligned.

8. Place the booster diaphragm and vent assembly

(116) on the assembly with the brass vent assem-
bly facing up. Be certain the large holes in the small
pneumatic passages are aligned.

9. Place the large booster spring (117) on the dia-

phragm and over the brass vent assembly.

10. Place the connection block (118) on the assembly

with the plugged hole facing opposite the electrical
NPT connection.

11. Tighten the entire booster section together with the

two housing bolts (119).

Troubleshooting

Failure

Probable Cause

Corrective Action

Operation erratic and

1. Loose signal wire connection

1. Tighten signal wire connection

inconsistent

2. Dirt build-up on flapper and nozzle

2. Remove dirt build-up; see "Cleaning

Flapper and Nozzle " section

Won't calibrate to full span

1. Dirt build-up on nozzle and flapper

1. Remove dirt build-up; see "Cleaning

with normal air pressure

Flapper and Nozzle" section

2. Air supply pressure too high or low

2. Adjust air supply to 20 psi

Excessive air consumption

1. Ruptured diaphragm

1. Replace diaphragm; see

"Disassembling and Reassembling
Booster" section

2. Housing bolts loose

2. Tighten housing bolts

Transducer does not

1. Plugged orifices

1. Clean orifices; see Disassembling

respond to singnal

and Reassembling Booster" secton

2. Shorted or open circuit coil

2. Replace transducer

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 presented 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 of its worldwide operations or offices.

For more information, contact:

For more information about Flowserve, contact www.flowserve.com or call USA 972 443 6500

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