Flowserve Electro-pneumatic Transducers - Manual (Page 3)

30-3
CAUTION: There are numerous springs and
parts under compression within this section.
Care must be used not to lose these parts.
At this point, the orifices in the booster section may be
cleaned, or a ruptured diaphragm may be replaced.
The orifices may be cleaned by using an air nozzle, or
by inserting an instrument (which is less than .009-inch
in diameter) into the orifices.
Replace a ruptured diaphragm with the same part. (See
Figure 2 for item numbers.)
Reassembling the Booster Section
To reassemble the booster section, refer to Figure 2
and proceed as follows: (Numbers in parenthesis refer
to item numbers; see Figure 2.)
1. Invert the I/P transducer so that is rests on the
round housing cover.
2. Place the first stage feedback spring (110) in the
housing hole.
3. Place the spring button (111) on the first stage feed-
back spring (110) with the spring guide in the
spring.
4. Place the upper diaphragm (112, with three holes)
on the spring button (111) with the convolution fac-
ing down and with the small hole in the diaphragm
over the orifice.
Figure 1: I/P Transducer with Housing
and Electronic Module Covers Removed
Parts List
101 Cover
102 Cover O-ring
103 Electronic module cover
104 Electronic module
105 Nozzle O-ring
106 Flame arrestor cover
107 Terminal block
108 Arrestor O-ring
109 Transducer base
110 Feedback spring
111 Spring button
112 Upper diaphragm
113 Nozzle block
114 Lower diaphragm
Figure 2: Electro-pneumatic (i/P)
Transducer – Exploded View
115 Vent block
116 Booster diaphragm
117 Booster spring
118 Connecting block
119 Housing bolt / washer
120 Electronic module cover screw
121 Electronic module mounting screw
122 Terminal block mounting screw
123 Booster poppet
124 Poppet spring
125 Poppet retainer
126 Ground screw
127 Ground clamp
128 Washer