Table of Contents
Advertisement
Instruction Manual
D100348X012
Fisher
2625, 2625SST, and 2625NS Volume
™
Boosters
Contents
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Introduction
Scope of Manual
This instruction manual provides installation, operation, maintenance, and parts information for Fisher 2625,
2625SST, and 2625NS volume boosters (figure 1). Refer to separate instruction manuals for information regarding the
valve body, actuator, and other accessories.
Do not install, operate, or maintain a 2625, 2625SST, 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
office
or Local Business Partner before proceeding.
www.Fisher.com
. . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . .
. . . . . . . . .
2625, 2625SST, and 2625NS Volume Booster
Figure 1. Fisher 2625 Volume Booster
1
1
2
2
3
4
5
5
6
7
7
7
8
8
8
9
10
11
11
11
May 2017
Emerson sales
Advertisement
Table of Contents
Summary of Contents for Fisher 2625
-
Page 1: Table Of Contents
2625SST, and 2625NS volume boosters (figure 1). Refer to separate instruction manuals for information regarding the valve body, actuator, and other accessories. Do not install, operate, or maintain a 2625, 2625SST, 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. -
Page 2: Description
D100348X012 Description The 2625 and 2625SST are certified for use in Safety Instrumented System (SIS) applications. Certification is by EXIDA Consulting LLC, a global provider of functional safety and control system security. SIS certification is identified on the product by the EXIDA logo on the 2625 nameplate. -
Page 3: Educational Services
4. This term defined in ISA Standard S51.1 5. Zero psig to maximum supply. Educational Services For information on available courses for 2625, 2625SST, and 2625NS volume boosters, as well as a variety of other products, contact: Emerson Automation Solutions Educational Services - Registration Phone: 1-641-754-3771 or 1-800-338-8158 E-mail: education@emerson.com... -
Page 4: Installation
Fisher 3570 valve positioner 0.25 0.25 Fisher 3582 valve positioner 0.17 0.19 Fisher 3610J, 3610JP, 3611JP, 3620J, 3620JP, 3621JP valve positioner 0.37 0.30 Installation WARNING Always wear protective clothing, gloves, and eyewear when performing any maintenance procedures to avoid personal injury. -
Page 5: Mounting
The input signal connection is 1/4 NPT. The supply and output connections are 3/4 NPT (minimum pipe size recommended for nipple mounting is 1/2 NPT for 2625 and 3/4 NPT for 2625SST). Connections to the volume booster should be made as indicated in figure 2. Connections for two typical applications are shown in figure 3. 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. -
Page 6: Diagnostic Connections
To support diagnostic testing of valve/actuator/positioner packages, install connectors and hardware between the 2625, 2625SST, or 2625NS volume booster and the actuator. Typical connector installations are shown in figure 3. 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. -
Page 7: Supply Pressure
Instruction Manual 2625, 2625SST, and 2625NS Volume Booster D100348X012 May 2017 Supply Pressure Supply pressure must be clean dry air or noncorrosive gas. A high capacity filter, such as the 262K is recommended for use with the 2625 volume booster. -
Page 8: Principle Of Operation
Instruction Manual 2625, 2625SST, and 2625NS Volume Booster May 2017 D100348X012 Principle of Operation Refer to figures 3 and 2. Because of the restriction, large input signal changes register on the booster input diaphragm sooner than in the actuator. A large, sudden change in the input signal causes a pressure differential to exist between the input signal and the output of the booster. -
Page 9: Valve Assembly Replacement
Instruction Manual 2625, 2625SST, and 2625NS Volume Booster D100348X012 May 2017 your finger. If the spring seat (key 9) does not move freely in the spring case assembly (key 3), remove the spring seat (key 9), and apply lubricant (key 23). Reinstall the spring seat (key 9) in the spring case assembly (key 3). -
Page 10: Installation Of Diagnostic Connections
Instruction Manual 2625, 2625SST, and 2625NS Volume Booster May 2017 D100348X012 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). -
Page 11: Parts Ordering
Use only genuine Fisher replacement parts. Components that are not supplied by Emerson Automation Solutions should not, under any circumstances, be used in any Fisher instrument. The use of components not manufactured by Emerson Automation Solutions may void your warranty, might adversely affect the performance of the instrument, and could cause personal injury and property damage. - Page 12 For 2625 and 262SST Aluminum/nitrile Note Aluminum/FKM (high temp) For 2625NS, Aluminum/EPDM PTFE petroleum‐based lubricant is only for use with 2625 and 2625SST. For 2625NS use a medium grade silicone‐based lubricant. 7D* Valve O‐Ring For 2625 and 2625SST Nitrile Mounting Bracket FKM (high temp)
- Page 13 Instruction Manual 2625, 2625SST, and 2625NS Volume Booster D100348X012 May 2017 Figure 5. Volume Booster with Yoke Mounting Bracket YOKE MOUNTING BRACKET (KEY 26) ATTACH THIS SURFACE TO ACTUATOR YOKE YOKE MOUNTING BRACKET (KEY 26) A6034‐1 Figure 6. Stainless Steel Volume Booster with Yoke Mounting Bracket...
- Page 14 Instruction Manual 2625, 2625SST, and 2625NS Volume Booster May 2017 D100348X012 Figure 7. Stainless Steel Volume Booster with Case Mounting Bracket CASING MOUNTING BRACKET (KEY 26) GG39977...
-
Page 15: D100348X012 May
Instruction Manual 2625, 2625SST, and 2625NS Volume Booster D100348X012 May 2017... - Page 16 Responsibility for proper selection, use, and maintenance of any product remains solely with the purchaser and end user. Fisher, FIELDVUE, and FlowScanner are marks owned by one of the companies in the Emerson Automation Solutions business unit of Emerson Electric Co.
Need help?
Do you have a question about the 2625 and is the answer not in the manual?
Questions and answers