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Instruction Manual

D100348X012

2625 and 2625NS Volume Booster

January 2015

12

Figure 5. Volume Booster with Yoke Mounting Bracket

ATTACH THIS SURFACE
TO ACTUATOR YOKE

A6034‐1

YOKE MOUNTING
BRACKET (KEY 26)

YOKE
MOUNTING
BRACKET
(KEY 26)

Key

Description

13*

O‐Ring
 For 2625NS, EPDM
 For 2625, nitrile

14*

O‐Ring (2 req'd)
 For 2625, nitrile
 For 2625NS, EPDM

15

Cap Screw, steel pl (6 req'd)
 Standard
 With 1/2 NPT vent connection

16

Nameplate, stainless steel

17

Drive Screw, stainless steel (2 req'd)

20

Anti‐seize sealant

21

Lubricant, silicone sealant

22

Thread locking adhesive, mild strength

23

PTFE petroleum‐based lubricant (see note immediately below)

Note

PTFE petroleum‐based lubricant is only for use with 2625. For 2625NS
use a medium grade silicone‐based lubricant.

Key

Description

26

Mounting Bracket
 For yoke mounting (see figure 5)
 For casing mounting
  (Use two brackets, stacked, for seismic mounting)

Diagnostic Connections

FlowScanner

t

 diagnostic system hook‐up

 Includes pipe tee, pipe nipple, pipe
 bushings, connector body, and body
 protector.

  For diaphragm actuator
   SST fittings
   Brass fittings
  For piston actuator
   SST fittings
   Brass fittings

Emerson Process Management 

Marshalltown, Iowa 50158 USA
Sorocaba, 18087 Brazil
Chatham, Kent ME4 4QZ UK
Dubai, United Arab Emirates
Singapore 128461 Singapore

www.Fisher.com

The contents of this publication are presented for informational purposes only, and while every effort has been made to ensure their accuracy, they are not
to be construed as warranties or guarantees, express or implied, regarding the products or services described herein or their use or applicability. All sales are
governed by our terms and conditions, which are available upon request. We reserve the right to modify or improve the designs or specifications of such
products at any time without notice.

E

 

1997, 2015 Fisher Controls International LLC. All rights reserved.

Fisher, FIELDVUE, and FlowScanner are marks owned by one of the companies in the Emerson Process Management business unit of Emerson Electric Co.
Emerson Process Management, Emerson, and the Emerson logo are trademarks and service marks of Emerson Electric Co. All other marks are the property
of their respective owners.

Neither Emerson, Emerson Process Management, nor any of their affiliated entities assumes responsibility for the selection, use or maintenance
of any product. Responsibility for proper selection, use, and maintenance of any product remains solely with the purchaser and end user.

Содержание Fisher 2625

Страница 1: ...a 2625 or 2625NS volume booster without being fully trained and qualified in valve actuator and accessory installation operation and maintenance To avoid personal injury or property damage it is important to carefully read understand and follow all of the contents of this manual including all safety cautions and warnings If you have any questions regarding these instructions contact your Emerson P...

Страница 2: ...on on the volume booster must be closed turned fully clockwise To facilitate diagnostic testing you can install connectors and piping with each 2625 and 2625NS volume booster The 2625NS volume booster is designed for nuclear power applications The 2625NS construction includes materials that provide superior performance at elevated temperature and radiation levels The O rings in the 2625NS are EPDM...

Страница 3: ...ts 2 3 2625 40 to 71_C 40 to 160_F 2625NS 40 to 93_C 40 to 200_F Maximum Flow Coefficients See table 2 Connections Input Signal 1 4 NPT Supply and Output Signal 3 4 NPT Hazardous Area Classification Complies with the requirements of ATEX Group II Category 2 Gas and Dust Safety Instrumented System Classification SIL3 capable certified by exida Consulting LLC Approximate Weight 2 3 kg 5 pounds Decla...

Страница 4: ...ersonal injury due to bursting of pressure containing parts or explosion of accumulated gas Check with your process or safety engineer for any additional measures that must be taken to protect against process media Note Do not use separate pressure supplies for the volume booster and associated positioner The volume booster may not exhaust immediately upon loss of a separate pressure supply Howeve...

Страница 5: ...re shown in figure 2 Ensure that the piping is of proper size to meet the capacity demands of the booster and that you equip the actuator with properly sized input connections Figure 2 Typical Installations 2625 OR 2625NS VOLUME BOOSTER B2372 1 2625 OR 2625NS VOLUME BOOSTER 2625 OR 2625NS VOLUME BOOSTER POSITIONER OUTPUT POSITIONER POSITIONER OUTPUT TOP CYL SIGNAL SUPPLY POSITIONER POSITIONER OUTP...

Страница 6: ...2625 or 2625NS volume booster and the actuator Typical connector installations are shown in figure 2 The hardware used includes a 3 4 NPT pipe nipple pipe tee and pipe bushings with an 1 8 NPT pipe bushing for the connector The connector consists of an 1 8 NPT body and body protector See separate instructions for diagnostic connections to the positioner Supply Pressure Supply pressure must be clea...

Страница 7: ... be opened so far that the booster will never operate Prior to operation turn the bypass restriction adjusting screw figure 3 four or five turns counterclockwise from the fully closed position With the actuator in operation slowly turn the restriction clockwise until the booster operates in response to large changes in the input signal yet allows small changes to move the actuator without initiati...

Страница 8: ...spacer key 2 diaphragm assembly key 5 which includes the lower diaphragm and the O rings key 14 Inspect these parts for damage and replace if necessary 3 Replace the O rings key 14 after coating with lubricant key 21 Then replace the diaphragm assembly key 5 diaphragm spacer key 2 and the upper diaphragm key 6 Note To ensure proper operation of the bypass restriction make certain that the holes in...

Страница 9: ...V4286 B 1 Remove the six cap screws key 15 from the perimeter of the spring case assembly key 3 and lift off the assembly taking care you do not lose the upper spring key 8 or the spring seat key 9 2 Remove the upper diaphragm key 6 the diaphragm spacer key 2 the diaphragm assembly key 5 which includes the lower diaphragm and the O rings key 14 3 Unscrew the valve assembly key 7 from the body The ...

Страница 10: ...h the holes in the diaphragm spacer key 2 10 Make sure the O rings key 14 are installed in the diaphragm spacer key 2 and coated with lubricant key 21 11 Install the upper diaphragm key 6 12 Install the spring case assembly key 3 on the upper diaphragm key 6 Make sure the spring seat key 9 and upper spring key 8 are installed in the spring case assembly Press on the bottom of the spring seat with ...

Страница 11: ...Description 1 Body Aluminum 2 Diaphragm Spacer Aluminum Aluminum with 1 2 NPT vent connection 3 Spring Case Assembly Aluminum heat treated 440 stainless steel 4 Body Cap Brass 316 SST 5 Diaphragm Assembly For 2625 Nitrile on nylon diaphragm With brass blocked exhaust With brass 2 4mm 0 094 inch exhaust With brass 9 5mm 0 375 inch exhaust With brass 12 7mm 0 5 inch exhaust For 2625NS EPDM meta aram...

Страница 12: ...Emerson Process Management Marshalltown Iowa 50158 USA Sorocaba 18087 Brazil Chatham Kent ME4 4QZ UK Dubai United Arab Emirates Singapore 128461 Singapore www Fisher com The contents of this publication are presented for informational purposes only and while every effort has been made to ensure their accuracy they are not to be construed as warranties or guarantees express or implied regarding the...

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